David S. Miller [Sat, 25 Apr 2020 01:26:14 +0000 (18:26 -0700)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2020-04-24
The following pull-request contains BPF updates for your *net* tree.
We've added 17 non-merge commits during the last 5 day(s) which contain
a total of 19 files changed, 203 insertions(+), 85 deletions(-).
The main changes are:
1) link_update fix, from Andrii.
2) libbpf get_xdp_id fix, from David.
3) xadd verifier fix, from Jann.
4) x86-32 JIT fixes, from Luke and Wang.
5) test_btf fix, from Stanislav.
6) freplace verifier fix, from Toke.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Stanislav Fomichev [Wed, 22 Apr 2020 00:37:53 +0000 (17:37 -0700)]
selftests/bpf: Fix a couple of broken test_btf cases
Commit
51c39bb1d5d1 ("bpf: Introduce function-by-function verification")
introduced function linkage flag and changed the error message from
"vlen != 0" to "Invalid func linkage" and broke some fake BPF programs.
Adjust the test accordingly.
AFACT, the programs don't really need any arguments and only look
at BTF for maps, so let's drop the args altogether.
Before:
BTF raw test[103] (func (Non zero vlen)): do_test_raw:3703:FAIL expected
err_str:vlen != 0
magic: 0xeb9f
version: 1
flags: 0x0
hdr_len: 24
type_off: 0
type_len: 72
str_off: 72
str_len: 10
btf_total_size: 106
[1] INT (anon) size=4 bits_offset=0 nr_bits=32 encoding=SIGNED
[2] INT (anon) size=4 bits_offset=0 nr_bits=32 encoding=(none)
[3] FUNC_PROTO (anon) return=0 args=(1 a, 2 b)
[4] FUNC func type_id=3 Invalid func linkage
BTF libbpf test[1] (test_btf_haskv.o): libbpf: load bpf program failed:
Invalid argument
libbpf: -- BEGIN DUMP LOG ---
libbpf:
Validating test_long_fname_2() func#1...
Arg#0 type PTR in test_long_fname_2() is not supported yet.
processed 0 insns (limit
1000000) max_states_per_insn 0 total_states 0
peak_states 0 mark_read 0
libbpf: -- END LOG --
libbpf: failed to load program 'dummy_tracepoint'
libbpf: failed to load object 'test_btf_haskv.o'
do_test_file:4201:FAIL bpf_object__load: -4007
BTF libbpf test[2] (test_btf_newkv.o): libbpf: load bpf program failed:
Invalid argument
libbpf: -- BEGIN DUMP LOG ---
libbpf:
Validating test_long_fname_2() func#1...
Arg#0 type PTR in test_long_fname_2() is not supported yet.
processed 0 insns (limit
1000000) max_states_per_insn 0 total_states 0
peak_states 0 mark_read 0
libbpf: -- END LOG --
libbpf: failed to load program 'dummy_tracepoint'
libbpf: failed to load object 'test_btf_newkv.o'
do_test_file:4201:FAIL bpf_object__load: -4007
BTF libbpf test[3] (test_btf_nokv.o): libbpf: load bpf program failed:
Invalid argument
libbpf: -- BEGIN DUMP LOG ---
libbpf:
Validating test_long_fname_2() func#1...
Arg#0 type PTR in test_long_fname_2() is not supported yet.
processed 0 insns (limit
1000000) max_states_per_insn 0 total_states 0
peak_states 0 mark_read 0
libbpf: -- END LOG --
libbpf: failed to load program 'dummy_tracepoint'
libbpf: failed to load object 'test_btf_nokv.o'
do_test_file:4201:FAIL bpf_object__load: -4007
Fixes: 51c39bb1d5d1 ("bpf: Introduce function-by-function verification")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200422003753.124921-1-sdf@google.com
Andrii Nakryiko [Wed, 22 Apr 2020 01:24:07 +0000 (18:24 -0700)]
tools/runqslower: Ensure own vmlinux.h is picked up first
Reorder include paths to ensure that runqslower sources are picking up
vmlinux.h, generated by runqslower's own Makefile. When runqslower is built
from selftests/bpf, due to current -I$(BPF_INCLUDE) -I$(OUTPUT) ordering, it
might pick up not-yet-complete vmlinux.h, generated by selftests Makefile,
which could lead to compilation errors like [0]. So ensure that -I$(OUTPUT)
goes first and rely on runqslower's Makefile own dependency chain to ensure
vmlinux.h is properly completed before source code relying on it is compiled.
[0] https://travis-ci.org/github/libbpf/libbpf/jobs/
677905925
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200422012407.176303-1-andriin@fb.com
Zou Wei [Thu, 23 Apr 2020 02:32:40 +0000 (10:32 +0800)]
bpf: Make bpf_link_fops static
Fix the following sparse warning:
kernel/bpf/syscall.c:2289:30: warning: symbol 'bpf_link_fops' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/1587609160-117806-1-git-send-email-zou_wei@huawei.com
Martin KaFai Lau [Fri, 24 Apr 2020 18:29:11 +0000 (11:29 -0700)]
bpftool: Respect the -d option in struct_ops cmd
In the prog cmd, the "-d" option turns on the verifier log.
This is missed in the "struct_ops" cmd and this patch fixes it.
Fixes: 65c93628599d ("bpftool: Add struct_ops support")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200424182911.1259355-1-kafai@fb.com
Toke Høiland-Jørgensen [Fri, 24 Apr 2020 13:34:28 +0000 (15:34 +0200)]
selftests/bpf: Add test for freplace program with expected_attach_type
This adds a new selftest that tests the ability to attach an freplace
program to a program type that relies on the expected_attach_type of the
target program to pass verification.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/158773526831.293902.16011743438619684815.stgit@toke.dk
Toke Høiland-Jørgensen [Fri, 24 Apr 2020 13:34:27 +0000 (15:34 +0200)]
bpf: Propagate expected_attach_type when verifying freplace programs
For some program types, the verifier relies on the expected_attach_type of
the program being verified in the verification process. However, for
freplace programs, the attach type was not propagated along with the
verifier ops, so the expected_attach_type would always be zero for freplace
programs.
This in turn caused the verifier to sometimes make the wrong call for
freplace programs. For all existing uses of expected_attach_type for this
purpose, the result of this was only false negatives (i.e., freplace
functions would be rejected by the verifier even though they were valid
programs for the target they were replacing). However, should a false
positive be introduced, this can lead to out-of-bounds accesses and/or
crashes.
The fix introduced in this patch is to propagate the expected_attach_type
to the freplace program during verification, and reset it after that is
done.
Fixes: be8704ff07d2 ("bpf: Introduce dynamic program extensions")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/158773526726.293902.13257293296560360508.stgit@toke.dk
Andrii Nakryiko [Fri, 24 Apr 2020 05:20:44 +0000 (22:20 -0700)]
bpf: Fix leak in LINK_UPDATE and enforce empty old_prog_fd
Fix bug of not putting bpf_link in LINK_UPDATE command.
Also enforce zeroed old_prog_fd if no BPF_F_REPLACE flag is specified.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200424052045.4002963-1-andriin@fb.com
Wang YanQing [Thu, 23 Apr 2020 05:06:37 +0000 (13:06 +0800)]
bpf, x86_32: Fix logic error in BPF_LDX zero-extension
When verifier_zext is true, we don't need to emit code
for zero-extension.
Fixes: 836256bf5f37 ("x32: bpf: eliminate zero extension code-gen")
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200423050637.GA4029@udknight
Luke Nelson [Wed, 22 Apr 2020 17:36:30 +0000 (10:36 -0700)]
bpf, x86_32: Fix clobbering of dst for BPF_JSET
The current JIT clobbers the destination register for BPF_JSET BPF_X
and BPF_K by using "and" and "or" instructions. This is fine when the
destination register is a temporary loaded from a register stored on
the stack but not otherwise.
This patch fixes the problem (for both BPF_K and BPF_X) by always loading
the destination register into temporaries since BPF_JSET should not
modify the destination register.
This bug may not be currently triggerable as BPF_REG_AX is the only
register not stored on the stack and the verifier uses it in a limited
way.
Fixes: 03f5781be2c7b ("bpf, x86_32: add eBPF JIT compiler for ia32")
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Wang YanQing <udknight@gmail.com>
Link: https://lore.kernel.org/bpf/20200422173630.8351-2-luke.r.nels@gmail.com
Luke Nelson [Wed, 22 Apr 2020 17:36:29 +0000 (10:36 -0700)]
bpf, x86_32: Fix incorrect encoding in BPF_LDX zero-extension
The current JIT uses the following sequence to zero-extend into the
upper 32 bits of the destination register for BPF_LDX BPF_{B,H,W},
when the destination register is not on the stack:
EMIT3(0xC7, add_1reg(0xC0, dst_hi), 0);
The problem is that C7 /0 encodes a MOV instruction that requires a 4-byte
immediate; the current code emits only 1 byte of the immediate. This
means that the first 3 bytes of the next instruction will be treated as
the rest of the immediate, breaking the stream of instructions.
This patch fixes the problem by instead emitting "xor dst_hi,dst_hi"
to clear the upper 32 bits. This fixes the problem and is more efficient
than using MOV to load a zero immediate.
This bug may not be currently triggerable as BPF_REG_AX is the only
register not stored on the stack and the verifier uses it in a limited
way, and the verifier implements a zero-extension optimization. But the
JIT should avoid emitting incorrect encodings regardless.
Fixes: 03f5781be2c7b ("bpf, x86_32: add eBPF JIT compiler for ia32")
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Acked-by: Wang YanQing <udknight@gmail.com>
Link: https://lore.kernel.org/bpf/20200422173630.8351-1-luke.r.nels@gmail.com
Jakub Wilk [Wed, 22 Apr 2020 08:23:24 +0000 (10:23 +0200)]
bpf: Fix reStructuredText markup
The patch fixes:
$ scripts/bpf_helpers_doc.py > bpf-helpers.rst
$ rst2man bpf-helpers.rst > bpf-helpers.7
bpf-helpers.rst:1105: (WARNING/2) Inline strong start-string without end-string.
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200422082324.2030-1-jwilk@jwilk.net
Doug Berger [Thu, 23 Apr 2020 23:13:30 +0000 (16:13 -0700)]
net: systemport: suppress warnings on failed Rx SKB allocations
The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.
However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.
This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Doug Berger [Thu, 23 Apr 2020 23:02:11 +0000 (16:02 -0700)]
net: bcmgenet: suppress warnings on failed Rx SKB allocations
The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.
However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.
This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Taehee Yoo [Thu, 23 Apr 2020 13:40:47 +0000 (13:40 +0000)]
macsec: avoid to set wrong mtu
When a macsec interface is created, the mtu is calculated with the lower
interface's mtu value.
If the mtu of lower interface is lower than the length, which is needed
by macsec interface, macsec's mtu value will be overflowed.
So, if the lower interface's mtu is too low, macsec interface's mtu
should be set to 0.
Test commands:
ip link add dummy0 mtu 10 type dummy
ip link add macsec0 link dummy0 type macsec
ip link show macsec0
Before:
11: macsec0@dummy0: <BROADCAST,MULTICAST,M-DOWN> mtu
4294967274
After:
11: macsec0@dummy0: <BROADCAST,MULTICAST,M-DOWN> mtu 0
Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Apr 2020 20:17:01 +0000 (13:17 -0700)]
Merge tag 'mac80211-for-net-2020-04-24' of git://git./linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Just three changes:
* fix a wrong GFP_KERNEL in hwsim
* fix the debugfs mess after the mac80211 registration race fix
* suppress false-positive RCU list lockdep warnings
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 24 Apr 2020 20:14:05 +0000 (13:14 -0700)]
Merge tag 'wireless-drivers-2020-04-24' of git://git./linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for v5.7
Second set of fixes for v5.7. Quite a few iwlwifi fixes and some
maintainers file updates.
iwlwifi
* fix a bug with kmemdup() error handling
* fix a DMA pool warning about unfreed memory
* fix beacon statistics
* fix a theoritical bug in device initialisation
* fix queue limit handling and inactive TID removal
* disable ACK Enabled Aggregation which was enabled by accident
* fix transmit power setting reading from BIOS with certain versions
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Madhuparna Bhowmik [Thu, 9 Apr 2020 08:29:06 +0000 (13:59 +0530)]
mac80211: sta_info: Add lockdep condition for RCU list usage
The function sta_info_get_by_idx() uses RCU list primitive.
It is called with local->sta_mtx held from mac80211/cfg.c.
Add lockdep expression to avoid any false positive RCU list warnings.
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Link: https://lore.kernel.org/r/20200409082906.27427-1-madhuparnabhowmik10@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 23 Apr 2020 09:13:49 +0000 (11:13 +0200)]
mac80211: populate debugfs only after cfg80211 init
When fixing the initialization race, we neglected to account for
the fact that debugfs is initialized in wiphy_register(), and
some debugfs things went missing (or rather were rerooted to the
global debugfs root).
Fix this by adding debugfs entries only after wiphy_register().
This requires some changes in the rate control code since it
currently adds debugfs at alloc time, which can no longer be
done after the reordering.
Reported-by: Jouni Malinen <j@w1.fi>
Reported-by: kernel test robot <rong.a.chen@intel.com>
Reported-by: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Felix Fietkau <nbd@nbd.name>
Cc: stable@vger.kernel.org
Fixes: 52e04b4ce5d0 ("mac80211: fix race in ieee80211_register_hw()")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/20200423111344.0e00d3346f12.Iadc76a03a55093d94391fc672e996a458702875d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Doug Berger [Thu, 23 Apr 2020 22:44:17 +0000 (15:44 -0700)]
net: bcmgenet: correct per TX/RX ring statistics
The change to track net_device_stats per ring to better support SMP
missed updating the rx_dropped member.
The ndo_get_stats method is also needed to combine the results for
ethtool statistics (-S) before filling in the ethtool structure.
Fixes: 37a30b435b92 ("net: bcmgenet: Track per TX/RX rings statistics")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jonathan Corbet [Thu, 23 Apr 2020 15:39:03 +0000 (09:39 -0600)]
net: meth: remove spurious copyright text
Evidently, at some point in the pre-githistorious past,
drivers/net/ethernet/sgi/meth.h somehow contained some code from the
"snull" driver from the Linux Device Drivers book. A comment crediting
that source, asserting copyright ownership by the LDD authors, and imposing
the LDD2 license terms was duly added to the file.
Any code that may have been derived from snull is long gone, and the
distribution terms are not GPL-compatible. Since the copyright claim is
not based in fact (if it ever was), simply remove it and the distribution
terms as well.
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Kate Stewart <kstewart@linuxfoundation.org>
CC: "Fendt, Oliver" <oliver.fendt@siemens.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Thu, 23 Apr 2020 07:57:42 +0000 (08:57 +0100)]
net: phy: bcm84881: clear settings on link down
Clear the link partner advertisement, speed, duplex and pause when
the link goes down, as other phylib drivers do. This avoids the
stale link partner, speed and duplex settings being reported via
ethtool.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rohit Maheshwari [Thu, 23 Apr 2020 06:48:55 +0000 (12:18 +0530)]
chcr: Fix CPU hard lockup
Soft lock should be taken in place of hard lock.
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xiyu Yang [Thu, 23 Apr 2020 05:13:03 +0000 (13:13 +0800)]
net/x25: Fix x25_neigh refcnt leak when receiving frame
x25_lapb_receive_frame() invokes x25_get_neigh(), which returns a
reference of the specified x25_neigh object to "nb" with increased
refcnt.
When x25_lapb_receive_frame() returns, local variable "nb" becomes
invalid, so the refcount should be decreased to keep refcount balanced.
The reference counting issue happens in one path of
x25_lapb_receive_frame(). When pskb_may_pull() returns false, the
function forgets to decrease the refcnt increased by x25_get_neigh(),
causing a refcnt leak.
Fix this issue by calling x25_neigh_put() when pskb_may_pull() returns
false.
Fixes: cb101ed2c3c7 ("x25: Handle undersized/fragmented skbs")
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bo YU [Thu, 23 Apr 2020 02:10:03 +0000 (10:10 +0800)]
mptcp/pm_netlink.c : add check for nla_put_in/6_addr
Normal there should be checked for nla_put_in6_addr like other
usage in net.
Detected by CoverityScan, CID#
1461639
Fixes: 01cacb00b35c ("mptcp: add netlink-based PM")
Signed-off-by: Bo YU <tsu.yubo@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tang Bin [Thu, 23 Apr 2020 02:16:31 +0000 (10:16 +0800)]
net: ethernet: ixp4xx: Add error handling in ixp4xx_eth_probe()
The function ixp4xx_eth_probe() does not perform sufficient error
checking after executing devm_ioremap_resource(), which can result
in crashes if a critical error path is encountered.
Fixes: f458ac479777 ("ARM/net: ixp4xx: Pass ethernet physical base as resource")
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vishal Kulkarni [Wed, 22 Apr 2020 15:50:07 +0000 (21:20 +0530)]
cxgb4: fix adapter crash due to wrong MC size
In the absence of MC1, the size calculation function
cudbg_mem_region_size() was returing wrong MC size and
resulted in adapter crash. This patch adds new argument
to cudbg_mem_region_size() which will have actual size
and returns error to caller in the absence of MC1.
Fixes: a1c69520f785 ("cxgb4: collect MC memory dump")
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>"
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 23 Apr 2020 19:39:09 +0000 (12:39 -0700)]
Merge branch 'vxlan-geneve-use-the-correct-nlattr-array-for-extack'
Sabrina Dubroca says:
====================
net: vxlan/geneve: use the correct nlattr array for extack
The ->validate callbacks for vxlan and geneve have a couple of typos
in extack, where the nlattr array for IFLA_* attributes is used
instead of the link-specific one.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Wed, 22 Apr 2020 15:29:51 +0000 (17:29 +0200)]
geneve: use the correct nlattr array in NL_SET_ERR_MSG_ATTR
IFLA_GENEVE_* attributes are in the data array, which is correctly
used when fetching the value, but not when setting the extended
ack. Because IFLA_GENEVE_MAX < IFLA_MAX, we avoid out of bounds
array accesses, but we don't provide a pointer to the invalid
attribute to userspace.
Fixes: a025fb5f49ad ("geneve: Allow configuration of DF behaviour")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Wed, 22 Apr 2020 15:29:50 +0000 (17:29 +0200)]
vxlan: use the correct nlattr array in NL_SET_ERR_MSG_ATTR
IFLA_VXLAN_* attributes are in the data array, which is correctly
used when fetching the value, but not when setting the extended
ack. Because IFLA_VXLAN_MAX < IFLA_MAX, we avoid out of bounds
array accesses, but we don't provide a pointer to the invalid
attribute to userspace.
Fixes: 653ef6a3e4af ("vxlan: change vxlan_[config_]validate() to use netlink_ext_ack for error reporting")
Fixes: b4d3069783bc ("vxlan: Allow configuration of DF behaviour")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Wed, 22 Apr 2020 09:36:41 +0000 (12:36 +0300)]
mlxsw: Fix some IS_ERR() vs NULL bugs
The mlxsw_sp_acl_rulei_create() function is supposed to return an error
pointer from mlxsw_afa_block_create(). The problem is that these
functions both return NULL instead of error pointers. Half the callers
expect NULL and half expect error pointers so it could lead to a NULL
dereference on failure.
This patch changes both of them to return error pointers and changes all
the callers which checked for NULL to check for IS_ERR() instead.
Fixes: 4cda7d8d7098 ("mlxsw: core: Introduce flexible actions support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Baruch Siach [Tue, 21 Apr 2020 09:04:46 +0000 (12:04 +0300)]
net: phy: marvell10g: limit soft reset to 88x3310
The MV_V2_PORT_CTRL_SWRST bit in MV_V2_PORT_CTRL is reserved on
88E2110.
Setting SWRST on
88E2110 breaks packets transfer after interface down/up
cycle.
Fixes: 8f48c2ac85ed ("net: marvell10g: soft-reset the PHY when coming out of low power")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Wed, 22 Apr 2020 02:01:54 +0000 (02:01 +0000)]
mac80211_hwsim: use GFP_ATOMIC under spin lock
A spin lock is taken here so we should use GFP_ATOMIC.
Fixes: 5d44fe7c9808 ("mac80211_hwsim: add frame transmission support over virtio")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200422020154.112088-1-weiyongjun1@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
David Ahern [Mon, 20 Apr 2020 16:18:43 +0000 (10:18 -0600)]
libbpf: Only check mode flags in get_xdp_id
The commit in the Fixes tag changed get_xdp_id to only return prog_id
if flags is 0, but there are other XDP flags than the modes - e.g.,
XDP_FLAGS_UPDATE_IF_NOEXIST. Since the intention was only to look at
MODE flags, clear other ones before checking if flags is 0.
Fixes: f07cbad29741 ("libbpf: Fix bpf_get_link_xdp_id flags handling")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrey Ignatov <rdna@fb.com>
David Ahern [Wed, 22 Apr 2020 21:40:20 +0000 (15:40 -0600)]
ipv4: Update fib_select_default to handle nexthop objects
A user reported [0] hitting the WARN_ON in fib_info_nh:
[ 8633.839816] ------------[ cut here ]------------
[ 8633.839819] WARNING: CPU: 0 PID: 1719 at include/net/nexthop.h:251 fib_select_path+0x303/0x381
...
[ 8633.839846] RIP: 0010:fib_select_path+0x303/0x381
...
[ 8633.839848] RSP: 0018:
ffffb04d407f7d00 EFLAGS:
00010286
[ 8633.839850] RAX:
0000000000000000 RBX:
ffff9460b9897ee8 RCX:
00000000000000fe
[ 8633.839851] RDX:
0000000000000000 RSI:
00000000ffffffff RDI:
0000000000000000
[ 8633.839852] RBP:
ffff946076049850 R08:
0000000059263a83 R09:
ffff9460840e4000
[ 8633.839853] R10:
0000000000000014 R11:
0000000000000000 R12:
ffffb04d407f7dc0
[ 8633.839854] R13:
ffffffffa4ce3240 R14:
0000000000000000 R15:
ffff9460b7681f60
[ 8633.839857] FS:
00007fcac2e02700(0000) GS:
ffff9460bdc00000(0000) knlGS:
0000000000000000
[ 8633.839858] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 8633.839859] CR2:
00007f27beb77e28 CR3:
0000000077734000 CR4:
00000000000006f0
[ 8633.839867] Call Trace:
[ 8633.839871] ip_route_output_key_hash_rcu+0x421/0x890
[ 8633.839873] ip_route_output_key_hash+0x5e/0x80
[ 8633.839876] ip_route_output_flow+0x1a/0x50
[ 8633.839878] __ip4_datagram_connect+0x154/0x310
[ 8633.839880] ip4_datagram_connect+0x28/0x40
[ 8633.839882] __sys_connect+0xd6/0x100
...
The WARN_ON is triggered in fib_select_default which is invoked when
there are multiple default routes. Update the function to use
fib_info_nhc and convert the nexthop checks to use fib_nh_common.
Add test case that covers the affected code path.
[0] https://github.com/FRRouting/frr/issues/6089
Fixes: 493ced1ac47c ("ipv4: Allow routes to use nexthop objects")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Salvatore Bonaccorso [Wed, 22 Apr 2020 19:07:53 +0000 (21:07 +0200)]
netlabel: Kconfig: Update reference for NetLabel Tools project
The NetLabel Tools project has moved from http://netlabel.sf.net to a
GitHub project. Update to directly refer to the new home for the tools.
Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ioana Ciornei [Wed, 22 Apr 2020 17:52:54 +0000 (20:52 +0300)]
MAINTAINERS: update dpaa2-eth maintainer list
Add myself as another maintainer of dpaa2-eth.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 22 Apr 2020 16:24:56 +0000 (18:24 +0200)]
mptcp: fix data_fin handing in RX path
The data fin flag is set only via a DSS option, but
mptcp_incoming_options() copies it unconditionally from the
provided RX options.
Since we do not clear all the mptcp sock RX options in a
socket free/alloc cycle, we can end-up with a stray data_fin
value while parsing e.g. MPC packets.
That would lead to mapping data corruption and will trigger
a few WARN_ON() in the RX path.
Instead of adding a costly memset(), fetch the data_fin flag
only for DSS packets - when we always explicitly initialize
such bit at option parsing time.
Fixes: 648ef4b88673 ("mptcp: Implement MPTCP receive path")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Tue, 21 Apr 2020 23:48:27 +0000 (17:48 -0600)]
vrf: Fix IPv6 with qdisc and xfrm
When a qdisc is attached to the VRF device, the packet goes down the ndo
xmit function which is setup to send the packet back to the VRF driver
which does a lookup to send the packet out. The lookup in the VRF driver
is not considering xfrm policies. Change it to use ip6_dst_lookup_flow
rather than ip6_route_output.
Fixes: 35402e313663 ("net: Add IPv6 support to VRF device")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Hemminger [Tue, 21 Apr 2020 20:34:48 +0000 (13:34 -0700)]
Documentation: add documentation of ping_group_range
Support for non-root users to send ICMP ECHO requests was added
back in Linux 3.0 kernel, but the documentation for the sysctl
to enable it has been missing.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 23 Apr 2020 02:27:40 +0000 (19:27 -0700)]
Merge branch 'sctp-fixes'
Jere Leppänen says:
====================
sctp: Fix problems with peer restart when in SHUTDOWN-PENDING state and socket is closed
These patches are related to the scenario described in commit
bdf6fa52f01b ("sctp: handle association restarts when the socket is
closed."). To recap, when our association is in SHUTDOWN-PENDING state
and we've closed our one-to-one socket, while the peer crashes without
being detected, restarts and reconnects using the same addresses and
ports, we start association shutdown.
In this case, Cumulative TSN Ack in the SHUTDOWN that we send has
always been incorrect. Additionally, bundling of the SHUTDOWN with the
COOKIE-ACK was broken by a later commit. This series fixes both of
these issues.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jere Leppänen [Tue, 21 Apr 2020 19:03:42 +0000 (22:03 +0300)]
sctp: Fix SHUTDOWN CTSN Ack in the peer restart case
When starting shutdown in sctp_sf_do_dupcook_a(), get the value for
SHUTDOWN Cumulative TSN Ack from the new association, which is
reconstructed from the cookie, instead of the old association, which
the peer doesn't have anymore.
Otherwise the SHUTDOWN is either ignored or replied to with an ABORT
by the peer because CTSN Ack doesn't match the peer's Initial TSN.
Fixes: bdf6fa52f01b ("sctp: handle association restarts when the socket is closed.")
Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jere Leppänen [Tue, 21 Apr 2020 19:03:41 +0000 (22:03 +0300)]
sctp: Fix bundling of SHUTDOWN with COOKIE-ACK
When we start shutdown in sctp_sf_do_dupcook_a(), we want to bundle
the SHUTDOWN with the COOKIE-ACK to ensure that the peer receives them
at the same time and in the correct order. This bundling was broken by
commit
4ff40b86262b ("sctp: set chunk transport correctly when it's a
new asoc"), which assigns a transport for the COOKIE-ACK, but not for
the SHUTDOWN.
Fix this by passing a reference to the COOKIE-ACK chunk as an argument
to sctp_sf_do_9_2_start_shutdown() and onward to
sctp_make_shutdown(). This way the SHUTDOWN chunk is assigned the same
transport as the COOKIE-ACK chunk, which allows them to be bundled.
In sctp_sf_do_9_2_start_shutdown(), the void *arg parameter was
previously unused. Now that we're taking it into use, it must be a
valid pointer to a chunk, or NULL. There is only one call site where
it's not, in sctp_sf_autoclose_timer_expire(). Fix that too.
Fixes: 4ff40b86262b ("sctp: set chunk transport correctly when it's a new asoc")
Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Tue, 21 Apr 2020 17:18:53 +0000 (20:18 +0300)]
net: dsa: don't fail to probe if we couldn't set the MTU
There is no reason to fail the probing of the switch if the MTU couldn't
be configured correctly (either the switch port itself, or the host
port) for whatever reason. MTU-sized traffic probably won't work, sure,
but we can still probably limp on and support some form of communication
anyway, which the users would probably appreciate more.
Fixes: bfcb813203e6 ("net: dsa: configure the MTU for switch ports")
Reported-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 21 Apr 2020 17:00:28 +0000 (10:00 -0700)]
sched: etf: do not assume all sockets are full blown
skb->sk does not always point to a full blown socket,
we need to use sk_fullsock() before accessing fields which
only make sense on full socket.
BUG: KASAN: use-after-free in report_sock_error+0x286/0x300 net/sched/sch_etf.c:141
Read of size 1 at addr
ffff88805eb9b245 by task syz-executor.5/9630
CPU: 1 PID: 9630 Comm: syz-executor.5 Not tainted 5.7.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x188/0x20d lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xd3/0x315 mm/kasan/report.c:382
__kasan_report.cold+0x35/0x4d mm/kasan/report.c:511
kasan_report+0x33/0x50 mm/kasan/common.c:625
report_sock_error+0x286/0x300 net/sched/sch_etf.c:141
etf_enqueue_timesortedlist+0x389/0x740 net/sched/sch_etf.c:170
__dev_xmit_skb net/core/dev.c:3710 [inline]
__dev_queue_xmit+0x154a/0x30a0 net/core/dev.c:4021
neigh_hh_output include/net/neighbour.h:499 [inline]
neigh_output include/net/neighbour.h:508 [inline]
ip6_finish_output2+0xfb5/0x25b0 net/ipv6/ip6_output.c:117
__ip6_finish_output+0x442/0xab0 net/ipv6/ip6_output.c:143
ip6_finish_output+0x34/0x1f0 net/ipv6/ip6_output.c:153
NF_HOOK_COND include/linux/netfilter.h:296 [inline]
ip6_output+0x239/0x810 net/ipv6/ip6_output.c:176
dst_output include/net/dst.h:435 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_xmit+0xe1a/0x2090 net/ipv6/ip6_output.c:280
tcp_v6_send_synack+0x4e7/0x960 net/ipv6/tcp_ipv6.c:521
tcp_rtx_synack+0x10d/0x1a0 net/ipv4/tcp_output.c:3916
inet_rtx_syn_ack net/ipv4/inet_connection_sock.c:669 [inline]
reqsk_timer_handler+0x4c2/0xb40 net/ipv4/inet_connection_sock.c:763
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1405
expire_timers kernel/time/timer.c:1450 [inline]
__run_timers kernel/time/timer.c:1774 [inline]
__run_timers kernel/time/timer.c:1741 [inline]
run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1787
__do_softirq+0x26c/0x9f7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x192/0x1d0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:546 [inline]
smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
</IRQ>
RIP: 0010:des_encrypt+0x157/0x9c0 lib/crypto/des.c:792
Code: 85 22 06 00 00 41 31 dc 41 8b 4d 04 44 89 e2 41 83 e4 3f 4a 8d 3c a5 60 72 72 88 81 e2 3f 3f 3f 3f 48 89 f8 48 c1 e8 03 31 d9 <0f> b6 34 28 48 89 f8 c1 c9 04 83 e0 07 83 c0 03 40 38 f0 7c 09 40
RSP: 0018:
ffffc90003b5f6c0 EFLAGS:
00000282 ORIG_RAX:
ffffffffffffff13
RAX:
1ffffffff10e4e55 RBX:
00000000d2f846d0 RCX:
00000000d2f846d0
RDX:
0000000012380612 RSI:
ffffffff839863ca RDI:
ffffffff887272a8
RBP:
dffffc0000000000 R08:
ffff888091d0a380 R09:
0000000000800081
R10:
0000000000000000 R11:
0000000000000000 R12:
0000000000000012
R13:
ffff8880a8ae8078 R14:
00000000c545c93e R15:
0000000000000006
cipher_crypt_one crypto/cipher.c:75 [inline]
crypto_cipher_encrypt_one+0x124/0x210 crypto/cipher.c:82
crypto_cbcmac_digest_update+0x1b5/0x250 crypto/ccm.c:830
crypto_shash_update+0xc4/0x120 crypto/shash.c:119
shash_ahash_update+0xa3/0x110 crypto/shash.c:246
crypto_ahash_update include/crypto/hash.h:547 [inline]
hash_sendmsg+0x518/0xad0 crypto/algif_hash.c:102
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x308/0x7e0 net/socket.c:2362
___sys_sendmsg+0x100/0x170 net/socket.c:2416
__sys_sendmmsg+0x195/0x480 net/socket.c:2506
__do_sys_sendmmsg net/socket.c:2535 [inline]
__se_sys_sendmmsg net/socket.c:2532 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2532
do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c829
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:
00007f6d9528ec78 EFLAGS:
00000246 ORIG_RAX:
0000000000000133
RAX:
ffffffffffffffda RBX:
00000000004fc080 RCX:
000000000045c829
RDX:
0000000000000001 RSI:
0000000020002640 RDI:
0000000000000004
RBP:
000000000078bf00 R08:
0000000000000000 R09:
0000000000000000
R10:
0000000000000000 R11:
0000000000000246 R12:
00000000ffffffff
R13:
00000000000008d7 R14:
00000000004cb7aa R15:
00007f6d9528f6d4
Fixes: 4b15c7075352 ("net/sched: Make etf report drops on error_queue")
Fixes: 25db26a91364 ("net/sched: Introduce the ETF Qdisc")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Tue, 21 Apr 2020 14:47:24 +0000 (08:47 -0600)]
selftests: Fix suppress test in fib_tests.sh
fib_tests is spewing errors:
...
Cannot open network namespace "ns1": No such file or directory
Cannot open network namespace "ns1": No such file or directory
Cannot open network namespace "ns1": No such file or directory
Cannot open network namespace "ns1": No such file or directory
ping: connect: Network is unreachable
Cannot open network namespace "ns1": No such file or directory
Cannot open network namespace "ns1": No such file or directory
...
Each test entry in fib_tests is supposed to do its own setup and
cleanup. Right now the $IP commands in fib_suppress_test are
failing because there is no ns1. Add the setup/cleanup and logging
expected for each test.
Fixes: ca7a03c41753 ("ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule")
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 22 Apr 2020 19:50:41 +0000 (12:50 -0700)]
Merge branch 'net-dsa-b53-Various-ARL-fixes'
Florian Fainelli says:
====================
net: dsa: b53: Various ARL fixes
This patch series fixes a number of short comings in the existing b53
driver ARL management logic in particular:
- we were not looking up the {MAC,VID} tuples against their VID, despite
having VLANs enabled
- the MDB entries (multicast) would lose their validity as soon as a
single port in the vector would leave the entry
- the ARL was currently under utilized because we would always place new
entries in bin index #1, instead of using all possible bins available,
thus reducing the ARL effective size by 50% or 75% depending on the
switch generation
- it was possible to overwrite the ARL entries because no proper space
verification was done
This patch series addresses all of these issues.
Changes in v2:
- added a new patch to correctly flip invidual VLAN learning vs. shared
VLAN learning depending on the global VLAN state
- added Andrew's R-b tags for patches which did not change
- corrected some verbosity and minor issues in patch #4 to match caller
expectations, also avoid a variable length DECLARE_BITMAP() call
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 21 Apr 2020 03:26:55 +0000 (20:26 -0700)]
net: dsa: b53: b53_arl_rw_op() needs to select IVL or SVL
Flip the IVL_SVL_SELECT bit correctly based on the VLAN enable status,
the default is to perform Shared VLAN learning instead of Individual
learning.
Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 21 Apr 2020 03:26:54 +0000 (20:26 -0700)]
net: dsa: b53: Rework ARL bin logic
When asking the ARL to read a MAC address, we will get a number of bins
returned in a single read. Out of those bins, there can essentially be 3
states:
- all bins are full, we have no space left, and we can either replace an
existing address or return that full condition
- the MAC address was found, then we need to return its bin index and
modify that one, and only that one
- the MAC address was not found and we have a least one bin free, we use
that bin index location then
The code would unfortunately fail on all counts.
Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 21 Apr 2020 03:26:53 +0000 (20:26 -0700)]
net: dsa: b53: Fix ARL register definitions
The ARL {MAC,VID} tuple and the forward entry were off by 0x10 bytes,
which means that when we read/wrote from/to ARL bin index 0, we were
actually accessing the ARLA_RWCTRL register.
Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 21 Apr 2020 03:26:52 +0000 (20:26 -0700)]
net: dsa: b53: Fix valid setting for MDB entries
When support for the MDB entries was added, the valid bit was correctly
changed to be assigned depending on the remaining port bitmask, that is,
if there were no more ports added to the entry's port bitmask, the entry
now becomes invalid. There was another assignment a few lines below that
would override this which would invalidate entries even when there were
still multiple ports left in the MDB entry.
Fixes: 5d65b64a3d97 ("net: dsa: b53: Add support for MDB")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 21 Apr 2020 03:26:51 +0000 (20:26 -0700)]
net: dsa: b53: Lookup VID in ARL searches when VLAN is enabled
When VLAN is enabled, and an ARL search is issued, we also need to
compare the full {MAC,VID} tuple before returning a successful search
result.
Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 22 Apr 2020 19:32:11 +0000 (12:32 -0700)]
Merge branch 'vrf-looping'
David Ahern says:
====================
net: Fix looping with vrf, xfrms and qdisc on VRF
Trev reported that use of VRFs with xfrms is looping when a qdisc
is added to the VRF device. The combination of xfrm + qdisc is not
handled by the VRF driver which lost track that it has already
seen the packet.
The XFRM_TRANSFORMED flag is used by the netfilter code for a similar
purpose, so re-use for VRF. Patch 1 drops the #ifdef around setting
the flag in the xfrm output functions. Patch 2 adds a check to
the VRF driver for flag; if set the packet has already passed through
the VRF driver once and does not need to recirculated a second time.
This is a day 1 bug with VRFs; stable wise, I would only take this
back to 4.14. I have a set of test cases which I will submit to
net-next.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Mon, 20 Apr 2020 23:13:52 +0000 (17:13 -0600)]
vrf: Check skb for XFRM_TRANSFORMED flag
To avoid a loop with qdiscs and xfrms, check if the skb has already gone
through the qdisc attached to the VRF device and then to the xfrm layer.
If so, no need for a second redirect.
Fixes: 193125dbd8eb ("net: Introduce VRF device driver")
Reported-by: Trev Larock <trev@larock.ca>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Mon, 20 Apr 2020 23:13:51 +0000 (17:13 -0600)]
xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
IPSKB_XFRM_TRANSFORMED and IP6SKB_XFRM_TRANSFORMED are skb flags set by
xfrm code to tell other skb handlers that the packet has been passed
through the xfrm output functions. Simplify the code and just always
set them rather than conditionally based on netfilter enabled thus
making the flag available for other users.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Maciej Żenczykowski [Mon, 20 Apr 2020 18:25:07 +0000 (11:25 -0700)]
ipv6: ndisc: RFC-ietf-6man-ra-pref64-09 is now published as RFC8781
See:
https://www.rfc-editor.org/authors/rfc8781.txt
Cc: Erik Kline <ek@google.com>
Cc: Jen Linkova <furry@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Cc: Michael Haro <mharo@google.com>
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Fixes: c24a77edc9a7 ("ipv6: ndisc: add support for 'PREF64' dns64 prefix identifier")
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuiko Oshino [Mon, 20 Apr 2020 15:51:41 +0000 (11:51 -0400)]
net: phy: microchip_t1: add lan87xx_phy_init to initialize the lan87xx phy.
lan87xx_phy_init() initializes the lan87xx phy hardware
including its TC10 Wake-up and Sleep features.
Fixes: 3e50d2da5850 ("Add driver for Microchip LAN87XX T1 PHYs")
Signed-off-by: Yuiko Oshino <yuiko.oshino@microchip.com>
v0->v1:
- Add more details in the commit message and source comments.
- Update to the latest initialization sequences.
- Add access_ereg_modify_changed().
- Fix access_ereg() to access SMI bank correctly.
Signed-off-by: David S. Miller <davem@davemloft.net>
Voon Weifeng [Mon, 20 Apr 2020 15:42:52 +0000 (23:42 +0800)]
net: stmmac: Enable SERDES power up/down sequence
This patch is to enable Intel SERDES power up/down sequence. The SERDES
converts 8/10 bits data to SGMII signal. Below is an example of
HW configuration for SGMII mode. The SERDES is located in the PHY IF
in the diagram below.
<-----------------GBE Controller---------->|<--External PHY chip-->
+----------+ +----+ +---+ +----------+
| EQoS | <-GMII->| DW | < ------ > |PHY| <-SGMII-> | External |
| MAC | |xPCS| |IF | | PHY |
+----------+ +----+ +---+ +----------+
^ ^ ^ ^
| | | |
+---------------------MDIO-------------------------+
PHY IF configuration and status registers are accessible through
mdio address 0x15 which is defined as mdio_adhoc_addr. During D0,
The driver will need to power up PHY IF by changing the power state
to P0. Likewise, for D3, the driver sets PHY IF power state to P3.
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dejin Zheng [Mon, 20 Apr 2020 15:06:41 +0000 (23:06 +0800)]
net: broadcom: convert to devm_platform_ioremap_resource_byname()
Use the function devm_platform_ioremap_resource_byname() to simplify
source code which calls the functions platform_get_resource_byname()
and devm_ioremap_resource(). Remove also a few error messages which
became unnecessary with this software refactoring.
Suggested-by: Markus Elfring <Markus.Elfring@web.de>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Taehee Yoo [Mon, 20 Apr 2020 13:29:40 +0000 (13:29 +0000)]
macvlan: fix null dereference in macvlan_device_event()
In the macvlan_device_event(), the list_first_entry_or_null() is used.
This function could return null pointer if there is no node.
But, the macvlan module doesn't check the null pointer.
So, null-ptr-deref would occur.
bond0
|
+----+-----+
| |
macvlan0 macvlan1
| |
dummy0 dummy1
The problem scenario.
If dummy1 is removed,
1. ->dellink() of dummy1 is called.
2. NETDEV_UNREGISTER of dummy1 notification is sent to macvlan module.
3. ->dellink() of macvlan1 is called.
4. NETDEV_UNREGISTER of macvlan1 notification is sent to bond module.
5. __bond_release_one() is called and it internally calls
dev_set_mac_address().
6. dev_set_mac_address() calls the ->ndo_set_mac_address() of macvlan1,
which is macvlan_set_mac_address().
7. macvlan_set_mac_address() calls the dev_set_mac_address() with dummy1.
8. NETDEV_CHANGEADDR of dummy1 is sent to macvlan module.
9. In the macvlan_device_event(), it calls list_first_entry_or_null().
At this point, dummy1 and macvlan1 were removed.
So, list_first_entry_or_null() will return NULL.
Test commands:
ip netns add nst
ip netns exec nst ip link add bond0 type bond
for i in {0..10}
do
ip netns exec nst ip link add dummy$i type dummy
ip netns exec nst ip link add macvlan$i link dummy$i \
type macvlan mode passthru
ip netns exec nst ip link set macvlan$i master bond0
done
ip netns del nst
Splat looks like:
[ 40.585687][ T146] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP DEI
[ 40.587249][ T146] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[ 40.588342][ T146] CPU: 1 PID: 146 Comm: kworker/u8:2 Not tainted 5.7.0-rc1+ #532
[ 40.589299][ T146] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 40.590469][ T146] Workqueue: netns cleanup_net
[ 40.591045][ T146] RIP: 0010:macvlan_device_event+0x4e2/0x900 [macvlan]
[ 40.591905][ T146] Code: 00 00 00 00 00 fc ff df 80 3c 06 00 0f 85 45 02 00 00 48 89 da 48 b8 00 00 00 00 00 fc ff d2
[ 40.594126][ T146] RSP: 0018:
ffff88806116f4a0 EFLAGS:
00010246
[ 40.594783][ T146] RAX:
dffffc0000000000 RBX:
0000000000000000 RCX:
0000000000000000
[ 40.595653][ T146] RDX:
0000000000000000 RSI:
ffff88806547ddd8 RDI:
ffff8880540f1360
[ 40.596495][ T146] RBP:
ffff88804011a808 R08:
fffffbfff4fb8421 R09:
fffffbfff4fb8421
[ 40.597377][ T146] R10:
ffffffffa7dc2107 R11:
0000000000000000 R12:
0000000000000008
[ 40.598186][ T146] R13:
ffff88804011a000 R14:
ffff8880540f1000 R15:
1ffff1100c22de9a
[ 40.599012][ T146] FS:
0000000000000000(0000) GS:
ffff888067800000(0000) knlGS:
0000000000000000
[ 40.600004][ T146] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 40.600665][ T146] CR2:
00005572d3a807b8 CR3:
000000005fcf4003 CR4:
00000000000606e0
[ 40.601485][ T146] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 40.602461][ T146] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 40.603443][ T146] Call Trace:
[ 40.603871][ T146] ? nf_tables_dump_setelem+0xa0/0xa0 [nf_tables]
[ 40.604587][ T146] ? macvlan_uninit+0x100/0x100 [macvlan]
[ 40.605212][ T146] ? __module_text_address+0x13/0x140
[ 40.605842][ T146] notifier_call_chain+0x90/0x160
[ 40.606477][ T146] dev_set_mac_address+0x28e/0x3f0
[ 40.607117][ T146] ? netdev_notify_peers+0xc0/0xc0
[ 40.607762][ T146] ? __module_text_address+0x13/0x140
[ 40.608440][ T146] ? notifier_call_chain+0x90/0x160
[ 40.609097][ T146] ? dev_set_mac_address+0x1f0/0x3f0
[ 40.609758][ T146] dev_set_mac_address+0x1f0/0x3f0
[ 40.610402][ T146] ? __local_bh_enable_ip+0xe9/0x1b0
[ 40.611071][ T146] ? bond_hw_addr_flush+0x77/0x100 [bonding]
[ 40.611823][ T146] ? netdev_notify_peers+0xc0/0xc0
[ 40.612461][ T146] ? bond_hw_addr_flush+0x77/0x100 [bonding]
[ 40.613213][ T146] ? bond_hw_addr_flush+0x77/0x100 [bonding]
[ 40.613963][ T146] ? __local_bh_enable_ip+0xe9/0x1b0
[ 40.614631][ T146] ? bond_time_in_interval.isra.31+0x90/0x90 [bonding]
[ 40.615484][ T146] ? __bond_release_one+0x9f0/0x12c0 [bonding]
[ 40.616230][ T146] __bond_release_one+0x9f0/0x12c0 [bonding]
[ 40.616949][ T146] ? bond_enslave+0x47c0/0x47c0 [bonding]
[ 40.617642][ T146] ? lock_downgrade+0x730/0x730
[ 40.618218][ T146] ? check_flags.part.42+0x450/0x450
[ 40.618850][ T146] ? __mutex_unlock_slowpath+0xd0/0x670
[ 40.619519][ T146] ? trace_hardirqs_on+0x30/0x180
[ 40.620117][ T146] ? wait_for_completion+0x250/0x250
[ 40.620754][ T146] bond_netdev_event+0x822/0x970 [bonding]
[ 40.621460][ T146] ? __module_text_address+0x13/0x140
[ 40.622097][ T146] notifier_call_chain+0x90/0x160
[ 40.622806][ T146] rollback_registered_many+0x660/0xcf0
[ 40.623522][ T146] ? netif_set_real_num_tx_queues+0x780/0x780
[ 40.624290][ T146] ? notifier_call_chain+0x90/0x160
[ 40.624957][ T146] ? netdev_upper_dev_unlink+0x114/0x180
[ 40.625686][ T146] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30
[ 40.626421][ T146] ? mutex_is_locked+0x13/0x50
[ 40.627016][ T146] ? unregister_netdevice_queue+0xf2/0x240
[ 40.627663][ T146] unregister_netdevice_many.part.134+0x13/0x1b0
[ 40.628362][ T146] default_device_exit_batch+0x2d9/0x390
[ 40.628987][ T146] ? unregister_netdevice_many+0x40/0x40
[ 40.629615][ T146] ? dev_change_net_namespace+0xcb0/0xcb0
[ 40.630279][ T146] ? prepare_to_wait_exclusive+0x2e0/0x2e0
[ 40.630943][ T146] ? ops_exit_list.isra.9+0x97/0x140
[ 40.631554][ T146] cleanup_net+0x441/0x890
[ ... ]
Fixes: e289fd28176b ("macvlan: fix the problem when mac address changes for passthru mode")
Reported-by: syzbot+5035b1f9dc7ea4558d5a@syzkaller.appspotmail.com
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Yan [Mon, 20 Apr 2020 12:35:06 +0000 (20:35 +0800)]
e1000: remove unneeded conversion to bool
The '==' expression itself is bool, no need to convert it to bool again.
This fixes the following coccicheck warning:
drivers/net/ethernet/intel/e1000/e1000_main.c:1479:44-49: WARNING:
conversion to bool not needed here
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Yan [Mon, 20 Apr 2020 12:34:48 +0000 (20:34 +0800)]
i40e: Remove unneeded conversion to bool
The '==' expression itself is bool, no need to convert it to bool again.
This fixes the following coccicheck warning:
drivers/net/ethernet/intel/i40e/i40e_main.c:1614:52-57: WARNING:
conversion to bool not needed here
drivers/net/ethernet/intel/i40e/i40e_main.c:11439:52-57: WARNING:
conversion to bool not needed here
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Yan [Mon, 20 Apr 2020 12:34:31 +0000 (20:34 +0800)]
ptp: Remove unneeded conversion to bool
The '==' expression itself is bool, no need to convert it to bool again.
This fixes the following coccicheck warning:
drivers/ptp/ptp_ines.c:403:55-60: WARNING: conversion to bool not
needed here
drivers/ptp/ptp_ines.c:404:55-60: WARNING: conversion to bool not
needed here
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Slaby [Mon, 20 Apr 2020 07:04:24 +0000 (09:04 +0200)]
cgroup, netclassid: remove double cond_resched
Commit
018d26fcd12a ("cgroup, netclassid: periodically release file_lock
on classid") added a second cond_resched to write_classid indirectly by
update_classid_task. Remove the one in write_classid.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 21 Apr 2020 18:50:31 +0000 (11:50 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) flow_block_cb memleak in nf_flow_table_offload_del_cb(), from Roi Dayan.
2) Fix error path handling in nf_nat_inet_register_fn(), from Hillf Danton.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ryder Lee [Sat, 18 Apr 2020 07:40:57 +0000 (15:40 +0800)]
MAINTAINERS: update mt76 reviewers
Roy no longer works here. Time to say goodbye, my friend.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/c171e0dfce9f2dad5ca6935eaf6004117f82e259.1587195398.git.ryder.lee@mediatek.com
Luca Coelho [Fri, 17 Apr 2020 10:37:11 +0000 (13:37 +0300)]
iwlwifi: fix WGDS check when WRDS is disabled
In the reference BIOS implementation, WRDS can be disabled without
disabling WGDS. And this happens in most cases where WRDS is
disabled, causing the WGDS without WRDS check and issue an error.
To avoid this issue, we change the check so that we only considered it
an error if the WRDS entry doesn't exist. If the entry (or the
selected profile is disabled for any other reason), we just silently
ignore WGDS.
Cc: stable@vger.kernel.org # 4.14+
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=205513
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417133700.72ad25c3998b.I875d935cefd595ed7f640ddcfc7bc802627d2b7f@changeid
Johannes Berg [Fri, 17 Apr 2020 07:08:14 +0000 (10:08 +0300)]
iwlwifi: mvm: fix inactive TID removal return value usage
The function iwl_mvm_remove_inactive_tids() returns bool, so we
should just check "if (ret)", not "if (ret >= 0)" (which would
do nothing useful here). We obviously therefore cannot use the
return value of the function for the free_queue, we need to use
the queue (i) we're currently dealing with instead.
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.9d862ed72535.I9e27ccc3ee3c8855fc13682592b571581925dfbd@changeid
Ilan Peer [Fri, 17 Apr 2020 07:08:13 +0000 (10:08 +0300)]
iwlwifi: mvm: Do not declare support for ACK Enabled Aggregation
As this was not supposed to be enabled to begin with.
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.53dbc3c6c36b.Idfe118546b92cc31548b2211472a5303c7de5909@changeid
Johannes Berg [Fri, 17 Apr 2020 07:08:12 +0000 (10:08 +0300)]
iwlwifi: mvm: limit maximum queue appropriately
Due to some hardware issues, queue 31 isn't usable on devices that have
32 queues (7000, 8000, 9000 families), which is correctly reflected in
the configuration and TX queue initialization.
However, the firmware API and queue allocation code assumes that there
are 32 queues, and if something actually attempts to use #31 this leads
to a NULL-pointer dereference since it's not allocated.
Fix this by limiting to 31 in the IWL_MVM_DQA_MAX_DATA_QUEUE, and also
add some code to catch this earlier in the future, if the configuration
changes perhaps.
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.98a79be2db6a.I3a4af6b03b87a6bc18db9b1ff9a812f397bee1fc@changeid
Johannes Berg [Fri, 17 Apr 2020 07:08:11 +0000 (10:08 +0300)]
iwlwifi: pcie: indicate correct RB size to device
In the context info, we need to indicate the correct RB size
to the device so that it will not think we have 4k when we
only use 2k. This seems to not have caused any issues right
now, likely because the hardware no longer supports putting
multiple entries into a single RB, and practically all of
the entries should be smaller than 2k.
Nevertheless, it's a bug, and we must advertise the right
size to the device.
Note that right now we can only tell it 2k vs. 4k, so for
the cases where we have more, still use 4k. This needs to
be fixed by the firmware first.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes: cfdc20efebdc ("iwlwifi: pcie: use partial pages if applicable")
Cc: stable@vger.kernel.org # v5.6
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.ae6cd345764f.I0985c55223decf70182b9ef1d8edf4179f537853@changeid
Mordechay Goodstein [Fri, 17 Apr 2020 07:08:10 +0000 (10:08 +0300)]
iwlwifi: mvm: beacon statistics shouldn't go backwards
We reset statistics also in case that we didn't reassoc so in
this cases keep last beacon counter.
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.1f9142751fbc.Ifbfd0f928a0a761110b8f4f2ca5483a61fb21131@changeid
Johannes Berg [Fri, 17 Apr 2020 07:08:09 +0000 (10:08 +0300)]
iwlwifi: pcie: actually release queue memory in TVQM
The iwl_trans_pcie_dyn_txq_free() function only releases the frames
that may be left on the queue by calling iwl_pcie_gen2_txq_unmap(),
but doesn't actually free the DMA ring or byte-count tables for the
queue. This leads to pretty large memory leaks (at least before my
queue size improvements), in particular in monitor/sniffer mode on
channel hopping since this happens on every channel change.
This was also now more evident after the move to a DMA pool for the
byte count tables, showing messages such as
BUG iwlwifi:bc (...): Objects remaining in iwlwifi:bc on __kmem_cache_shutdown()
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=206811.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes: 6b35ff91572f ("iwlwifi: pcie: introduce a000 TX queues management")
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.f5f4c4193ec1.Id5feebc9b4318041913a9c89fc1378bb5454292c@changeid
Chris Rorvick [Fri, 17 Apr 2020 07:45:58 +0000 (09:45 +0200)]
iwlwifi: actually check allocated conf_tlv pointer
Commit
71bc0334a637 ("iwlwifi: check allocated pointer when allocating
conf_tlvs") attempted to fix a typoe introduced by commit
17b809c9b22e
("iwlwifi: dbg: move debug data to a struct") but does not implement the
check correctly.
Fixes: 71bc0334a637 ("iwlwifi: check allocated pointer when allocating conf_tlvs")
Tweeted-by: @grsecurity
Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200417074558.12316-1-sedat.dilek@gmail.com
Luke Nelson [Sat, 18 Apr 2020 23:26:54 +0000 (16:26 -0700)]
bpf, selftests: Add test for BPF_STX BPF_B storing R10
This patch adds a test to test_verifier that writes the lower 8 bits of
R10 (aka FP) using BPF_B to an array map and reads the result back. The
expected behavior is that the result should be the same as first copying
R10 to R9, and then storing / loading the lower 8 bits of R9.
This test catches a bug that was present in the x86-64 JIT that caused
an incorrect encoding for BPF_STX BPF_B when the source operand is R10.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200418232655.23870-2-luke.r.nels@gmail.com
Luke Nelson [Sat, 18 Apr 2020 23:26:53 +0000 (16:26 -0700)]
bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B
This patch fixes an encoding bug in emit_stx for BPF_B when the source
register is BPF_REG_FP.
The current implementation for BPF_STX BPF_B in emit_stx saves one REX
byte when the operands can be encoded using Mod-R/M alone. The lower 8
bits of registers %rax, %rbx, %rcx, and %rdx can be accessed without using
a REX prefix via %al, %bl, %cl, and %dl, respectively. Other registers,
(e.g., %rsi, %rdi, %rbp, %rsp) require a REX prefix to use their 8-bit
equivalents (%sil, %dil, %bpl, %spl).
The current code checks if the source for BPF_STX BPF_B is BPF_REG_1
or BPF_REG_2 (which map to %rdi and %rsi), in which case it emits the
required REX prefix. However, it misses the case when the source is
BPF_REG_FP (mapped to %rbp).
The result is that BPF_STX BPF_B with BPF_REG_FP as the source operand
will read from register %ch instead of the correct %bpl. This patch fixes
the problem by fixing and refactoring the check on which registers need
the extra REX byte. Since no BPF registers map to %rsp, there is no need
to handle %spl.
Fixes: 622582786c9e0 ("net: filter: x86: internal BPF JIT")
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200418232655.23870-1-luke.r.nels@gmail.com
Jann Horn [Fri, 17 Apr 2020 00:00:07 +0000 (02:00 +0200)]
bpf: Fix handling of XADD on BTF memory
check_xadd() can cause check_ptr_to_btf_access() to be executed with
atype==BPF_READ and value_regno==-1 (meaning "just check whether the access
is okay, don't tell me what type it will result in").
Handle that case properly and skip writing type information, instead of
indexing into the registers at index -1 and writing into out-of-bounds
memory.
Note that at least at the moment, you can't actually write through a BTF
pointer, so check_xadd() will reject the program after calling
check_ptr_to_btf_access with atype==BPF_WRITE; but that's after the
verifier has already corrupted memory.
This patch assumes that BTF pointers are not available in unprivileged
programs.
Fixes: 9e15db66136a ("bpf: Implement accurate raw_tp context access via BTF")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200417000007.10734-2-jannh@google.com
Jann Horn [Fri, 17 Apr 2020 00:00:06 +0000 (02:00 +0200)]
bpf: Forbid XADD on spilled pointers for unprivileged users
When check_xadd() verifies an XADD operation on a pointer to a stack slot
containing a spilled pointer, check_stack_read() verifies that the read,
which is part of XADD, is valid. However, since the placeholder value -1 is
passed as `value_regno`, check_stack_read() can only return a binary
decision and can't return the type of the value that was read. The intent
here is to verify whether the value read from the stack slot may be used as
a SCALAR_VALUE; but since check_stack_read() doesn't check the type, and
the type information is lost when check_stack_read() returns, this is not
enforced, and a malicious user can abuse XADD to leak spilled kernel
pointers.
Fix it by letting check_stack_read() verify that the value is usable as a
SCALAR_VALUE if no type information is passed to the caller.
To be able to use __is_pointer_value() in check_stack_read(), move it up.
Fix up the expected unprivileged error message for a BPF selftest that,
until now, assumed that unprivileged users can use XADD on stack-spilled
pointers. This also gives us a test for the behavior introduced in this
patch for free.
In theory, this could also be fixed by forbidding XADD on stack spills
entirely, since XADD is a locked operation (for operations on memory with
concurrency) and there can't be any concurrency on the BPF stack; but
Alexei has said that he wants to keep XADD on stack slots working to avoid
changes to the test suite [1].
The following BPF program demonstrates how to leak a BPF map pointer as an
unprivileged user using this bug:
// r7 = map_pointer
BPF_LD_MAP_FD(BPF_REG_7, small_map),
// r8 = launder(map_pointer)
BPF_STX_MEM(BPF_DW, BPF_REG_FP, BPF_REG_7, -8),
BPF_MOV64_IMM(BPF_REG_1, 0),
((struct bpf_insn) {
.code = BPF_STX | BPF_DW | BPF_XADD,
.dst_reg = BPF_REG_FP,
.src_reg = BPF_REG_1,
.off = -8
}),
BPF_LDX_MEM(BPF_DW, BPF_REG_8, BPF_REG_FP, -8),
// store r8 into map
BPF_MOV64_REG(BPF_REG_ARG1, BPF_REG_7),
BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_FP),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_ARG2, -4),
BPF_ST_MEM(BPF_W, BPF_REG_ARG2, 0, 0),
BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_8, 0),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN()
[1] https://lore.kernel.org/bpf/
20200416211116.qxqcza5vo2ddnkdq@ast-mbp.dhcp.thefacebook.com/
Fixes: 17a5267067f3 ("bpf: verifier (add verifier core)")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200417000007.10734-1-jannh@google.com
Toke Høiland-Jørgensen [Thu, 16 Apr 2020 08:31:20 +0000 (10:31 +0200)]
cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled
When the kernel is built with CONFIG_DEBUG_PER_CPU_MAPS, the cpumap code
can trigger a spurious warning if CONFIG_CPUMASK_OFFSTACK is also set. This
happens because in this configuration, NR_CPUS can be larger than
nr_cpumask_bits, so the initial check in cpu_map_alloc() is not sufficient
to guard against hitting the warning in cpumask_check().
Fix this by explicitly checking the supplied key against the
nr_cpumask_bits variable before calling cpu_possible().
Fixes: 6710e1126934 ("bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Xiumei Mu <xmu@redhat.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200416083120.453718-1-toke@redhat.com
David S. Miller [Mon, 20 Apr 2020 23:17:48 +0000 (16:17 -0700)]
Merge tag 'mlx5-fixes-2020-04-20' of git://git./linux/kernel/git/saeed/linux
mlx5-fixes-2020-04-20
Signed-off-by: David S. Miller <davem@davemloft.net>
Zhu Yanjun [Wed, 8 Apr 2020 06:51:52 +0000 (14:51 +0800)]
net/mlx5e: Get the latest values from counters in switchdev mode
In the switchdev mode, when running "cat
/sys/class/net/NIC/statistics/tx_packets", the ppcnt register is
accessed to get the latest values. But currently this command can
not get the correct values from ppcnt.
From firmware manual, before getting the 802_3 counters, the 802_3
data layout should be set to the ppcnt register.
When the command "cat /sys/class/net/NIC/statistics/tx_packets" is
run, before updating 802_3 data layout with ppcnt register, the
monitor counters are tested. The test result will decide the
802_3 data layout is updated or not.
Actually the monitor counters do not support to monitor rx/tx
stats of 802_3 in switchdev mode. So the rx/tx counters change
will not trigger monitor counters. So the 802_3 data layout will
not be updated in ppcnt register. Finally this command can not get
the latest values from ppcnt register with 802_3 data layout.
Fixes: 5c7e8bbb0257 ("net/mlx5e: Use monitor counters for update stats")
Signed-off-by: Zhu Yanjun <yanjunz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Saeed Mahameed [Thu, 16 Apr 2020 22:04:02 +0000 (15:04 -0700)]
net/mlx5: Kconfig: convert imply usage to weak dependency
MLX5_CORE uses the 'imply' keyword to depend on VXLAN, PTP_1588_CLOCK,
MLXFW and PCI_HYPERV_INTERFACE.
This was useful to force vxlan, ptp, etc.. to be reachable to mlx5
regardless of their config states.
Due to the changes in the cited commit below, the semantics of 'imply'
was changed to not force any restriction on the implied config.
As a result of this change, the compilation of MLX5_CORE=y and VXLAN=m
would result in undefined references, as VXLAN now would stay as 'm'.
To fix this we change MLX5_CORE to have a weak dependency on
these modules/configs and make sure they are reachable, by adding:
depend on symbol || !symbol.
For example: VXLAN=m MLX5_CORE=y, this will force MLX5_CORE to m
Fixes: def2fbffe62c ("kconfig: allow symbols implied by y to become m")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Maxim Mikityanskiy [Tue, 11 Feb 2020 14:02:35 +0000 (16:02 +0200)]
net/mlx5e: Don't trigger IRQ multiple times on XSK wakeup to avoid WQ overruns
XSK wakeup function triggers NAPI by posting a NOP WQE to a special XSK
ICOSQ. When the application floods the driver with wakeup requests by
calling sendto() in a certain pattern that ends up in mlx5e_trigger_irq,
the XSK ICOSQ may overflow.
Multiple NOPs are not required and won't accelerate the process, so
avoid posting a second NOP if there is one already on the way. This way
we also avoid increasing the queue size (which might not help anyway).
Fixes: db05815b36cb ("net/mlx5e: Add XSK zero-copy support")
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Paul Blakey [Mon, 6 Apr 2020 12:47:52 +0000 (15:47 +0300)]
net/mlx5: CT: Change idr to xarray to protect parallel tuple id allocation
After allowing parallel tuple insertion, we get the following trace:
[ 5505.142249] ------------[ cut here ]------------
[ 5505.148155] WARNING: CPU: 21 PID: 13313 at lib/radix-tree.c:581 delete_node+0x16c/0x180
[ 5505.295553] CPU: 21 PID: 13313 Comm: kworker/u50:22 Tainted: G OE 5.6.0+ #78
[ 5505.304824] Hardware name: Supermicro Super Server/X10DRT-P, BIOS 2.0b 03/30/2017
[ 5505.313740] Workqueue: nf_flow_table_offload flow_offload_work_handler [nf_flow_table]
[ 5505.323257] RIP: 0010:delete_node+0x16c/0x180
[ 5505.349862] RSP: 0018:
ffffb19184eb7b30 EFLAGS:
00010282
[ 5505.356785] RAX:
0000000000000000 RBX:
ffff904ac95b86d8 RCX:
ffff904b6f938838
[ 5505.365190] RDX:
0000000000000000 RSI:
ffff904ac954b908 RDI:
ffff904ac954b920
[ 5505.373628] RBP:
ffff904b4ac13060 R08:
0000000000000001 R09:
0000000000000000
[ 5505.382155] R10:
0000000000000000 R11:
0000000000000040 R12:
0000000000000000
[ 5505.390527] R13:
ffffb19184eb7bfc R14:
ffff904b6bef5800 R15:
ffff90482c1203c0
[ 5505.399246] FS:
0000000000000000(0000) GS:
ffff904c2fc80000(0000) knlGS:
0000000000000000
[ 5505.408621] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 5505.415739] CR2:
00007f5d27006010 CR3:
0000000058c10006 CR4:
00000000001626e0
[ 5505.424547] Call Trace:
[ 5505.428429] idr_alloc_u32+0x7b/0xc0
[ 5505.433803] mlx5_tc_ct_entry_add_rule+0xbf/0x950 [mlx5_core]
[ 5505.441354] ? mlx5_fc_create+0x23c/0x370 [mlx5_core]
[ 5505.448225] mlx5_tc_ct_block_flow_offload+0x874/0x10b0 [mlx5_core]
[ 5505.456278] ? mlx5_tc_ct_block_flow_offload+0x63d/0x10b0 [mlx5_core]
[ 5505.464532] nf_flow_offload_tuple.isra.21+0xc5/0x140 [nf_flow_table]
[ 5505.472286] ? __kmalloc+0x217/0x2f0
[ 5505.477093] ? flow_rule_alloc+0x1c/0x30
[ 5505.482117] flow_offload_work_handler+0x1d0/0x290 [nf_flow_table]
[ 5505.489674] ? process_one_work+0x17c/0x580
[ 5505.494922] process_one_work+0x202/0x580
[ 5505.500082] ? process_one_work+0x17c/0x580
[ 5505.505696] worker_thread+0x4c/0x3f0
[ 5505.510458] kthread+0x103/0x140
[ 5505.514989] ? process_one_work+0x580/0x580
[ 5505.520616] ? kthread_bind+0x10/0x10
[ 5505.525837] ret_from_fork+0x3a/0x50
[ 5505.570841] ---[ end trace
07995de9c56d6831 ]---
This happens from parallel deletes/adds to idr, as idr isn't protected.
Fix that by using xarray as the tuple_ids allocator instead of idr.
Fixes: 7da182a998d6 ("netfilter: flowtable: Use work entry per offload command")
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Niklas Schnelle [Thu, 9 Apr 2020 07:46:20 +0000 (09:46 +0200)]
net/mlx5: Fix failing fw tracer allocation on s390
On s390 FORCE_MAX_ZONEORDER is 9 instead of 11, thus a larger kzalloc()
allocation as done for the firmware tracer will always fail.
Looking at mlx5_fw_tracer_save_trace(), it is actually the driver itself
that copies the debug data into the trace array and there is no need for
the allocation to be contiguous in physical memory. We can therefor use
kvzalloc() instead of kzalloc() and get rid of the large contiguous
allcoation.
Fixes: f53aaa31cce7 ("net/mlx5: FW tracer, implement tracer logic")
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Taehee Yoo [Mon, 20 Apr 2020 15:01:33 +0000 (15:01 +0000)]
team: fix hang in team_mode_get()
When team mode is changed or set, the team_mode_get() is called to check
whether the mode module is inserted or not. If the mode module is not
inserted, it calls the request_module().
In the request_module(), it creates a child process, which is
the "modprobe" process and waits for the done of the child process.
At this point, the following locks were used.
down_read(&cb_lock()); by genl_rcv()
genl_lock(); by genl_rcv_msc()
rtnl_lock(); by team_nl_cmd_options_set()
mutex_lock(&team->lock); by team_nl_team_get()
Concurrently, the team module could be removed by rmmod or "modprobe -r"
The __exit function of team module is team_module_exit(), which calls
team_nl_fini() and it tries to acquire following locks.
down_write(&cb_lock);
genl_lock();
Because of the genl_lock() and cb_lock, this process can't be finished
earlier than request_module() routine.
The problem secenario.
CPU0 CPU1
team_mode_get
request_module()
modprobe -r team_mode_roundrobin
team <--(B)
modprobe team <--(A)
team_mode_roundrobin
By request_module(), the "modprobe team_mode_roundrobin" command
will be executed. At this point, the modprobe process will decide
that the team module should be inserted before team_mode_roundrobin.
Because the team module is being removed.
By the module infrastructure, the same module insert/remove operations
can't be executed concurrently.
So, (A) waits for (B) but (B) also waits for (A) because of locks.
So that the hang occurs at this point.
Test commands:
while :
do
teamd -d &
killall teamd &
modprobe -rv team_mode_roundrobin &
done
The approach of this patch is to hold the reference count of the team
module if the team module is compiled as a module. If the reference count
of the team module is not zero while request_module() is being called,
the team module will not be removed at that moment.
So that the above scenario could not occur.
Fixes: 3d249d4ca7d0 ("net: introduce ethernet teaming device")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 20 Apr 2020 19:59:33 +0000 (12:59 -0700)]
Merge branch 'mptcp-fix-races-on-accept'
Paolo Abeni says:
====================
mptcp: fix races on accept()
This series includes some fixes for accept() races which may cause inconsistent
MPTCP socket status and oops. Please see the individual patches for the
technical details.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Mon, 20 Apr 2020 14:25:06 +0000 (16:25 +0200)]
mptcp: drop req socket remote_key* fields
We don't need them, as we can use the current ingress opt
data instead. Setting them in syn_recv_sock() may causes
inconsistent mptcp socket status, as per previous commit.
Fixes: cc7972ea1932 ("mptcp: parse and emit MP_CAPABLE option according to v1 spec")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Mon, 20 Apr 2020 14:25:05 +0000 (16:25 +0200)]
mptcp: avoid flipping mp_capable field in syn_recv_sock()
If multiple CPUs races on the same req_sock in syn_recv_sock(),
flipping such field can cause inconsistent child socket status.
When racing, the CPU losing the req ownership may still change
the mptcp request socket mp_capable flag while the CPU owning
the request is cloning the socket, leaving the child socket with
'is_mptcp' set but no 'mp_capable' flag.
Such socket will stay with 'conn' field cleared, heading to oops
in later mptcp callback.
Address the issue tracking the fallback status in a local variable.
Fixes: 58b09919626b ("mptcp: create msk early")
Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Mon, 20 Apr 2020 14:25:04 +0000 (16:25 +0200)]
mptcp: handle mptcp listener destruction via rcu
Following splat can occur during self test:
BUG: KASAN: use-after-free in subflow_data_ready+0x156/0x160
Read of size 8 at addr
ffff888100c35c28 by task mptcp_connect/4808
subflow_data_ready+0x156/0x160
tcp_child_process+0x6a3/0xb30
tcp_v4_rcv+0x2231/0x3730
ip_protocol_deliver_rcu+0x5c/0x860
ip_local_deliver_finish+0x220/0x360
ip_local_deliver+0x1c8/0x4e0
ip_rcv_finish+0x1da/0x2f0
ip_rcv+0xd0/0x3c0
__netif_receive_skb_one_core+0xf5/0x160
__netif_receive_skb+0x27/0x1c0
process_backlog+0x21e/0x780
net_rx_action+0x35f/0xe90
do_softirq+0x4c/0x50
[..]
This occurs when accessing subflow_ctx->conn.
Problem is that tcp_child_process() calls listen sockets'
sk_data_ready() notification, but it doesn't hold the listener
lock. Another cpu calling close() on the listener will then cause
transition of refcount to 0.
Fixes: 58b09919626bf ("mptcp: create msk early")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rahul Lakkireddy [Mon, 20 Apr 2020 09:56:54 +0000 (15:26 +0530)]
cxgb4: fix large delays in PTP synchronization
Fetching PTP sync information from mailbox is slow and can take
up to 10 milliseconds. Reduce this unnecessary delay by directly
reading the information from the corresponding registers.
Fixes: 9c33e4208bce ("cxgb4: Add PTP Hardware Clock (PHC) support")
Signed-off-by: Manoj Malviya <manojmalviya@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marc Zyngier [Sat, 18 Apr 2020 18:14:57 +0000 (19:14 +0100)]
net: stmmac: dwmac-meson8b: Add missing boundary to RGMII TX clock array
Running with KASAN on a VIM3L systems leads to the following splat
when probing the Ethernet device:
==================================================================
BUG: KASAN: global-out-of-bounds in _get_maxdiv+0x74/0xd8
Read of size 4 at addr
ffffa000090615f4 by task systemd-udevd/139
CPU: 1 PID: 139 Comm: systemd-udevd Tainted: G E
5.7.0-rc1-00101-g8624b7577b9c #781
Hardware name: amlogic w400/w400, BIOS 2020.01-rc5 03/12/2020
Call trace:
dump_backtrace+0x0/0x2a0
show_stack+0x20/0x30
dump_stack+0xec/0x148
print_address_description.isra.12+0x70/0x35c
__kasan_report+0xfc/0x1d4
kasan_report+0x4c/0x68
__asan_load4+0x9c/0xd8
_get_maxdiv+0x74/0xd8
clk_divider_bestdiv+0x74/0x5e0
clk_divider_round_rate+0x80/0x1a8
clk_core_determine_round_nolock.part.9+0x9c/0xd0
clk_core_round_rate_nolock+0xf0/0x108
clk_hw_round_rate+0xac/0xf0
clk_factor_round_rate+0xb8/0xd0
clk_core_determine_round_nolock.part.9+0x9c/0xd0
clk_core_round_rate_nolock+0xf0/0x108
clk_core_round_rate_nolock+0xbc/0x108
clk_core_set_rate_nolock+0xc4/0x2e8
clk_set_rate+0x58/0xe0
meson8b_dwmac_probe+0x588/0x72c [dwmac_meson8b]
platform_drv_probe+0x78/0xd8
really_probe+0x158/0x610
driver_probe_device+0x140/0x1b0
device_driver_attach+0xa4/0xb0
__driver_attach+0xcc/0x1c8
bus_for_each_dev+0xf4/0x168
driver_attach+0x3c/0x50
bus_add_driver+0x238/0x2e8
driver_register+0xc8/0x1e8
__platform_driver_register+0x88/0x98
meson8b_dwmac_driver_init+0x28/0x1000 [dwmac_meson8b]
do_one_initcall+0xa8/0x328
do_init_module+0xe8/0x368
load_module+0x3300/0x36b0
__do_sys_finit_module+0x120/0x1a8
__arm64_sys_finit_module+0x4c/0x60
el0_svc_common.constprop.2+0xe4/0x268
do_el0_svc+0x98/0xa8
el0_svc+0x24/0x68
el0_sync_handler+0x12c/0x318
el0_sync+0x158/0x180
The buggy address belongs to the variable:
div_table.63646+0x34/0xfffffffffffffa40 [dwmac_meson8b]
Memory state around the buggy address:
ffffa00009061480: fa fa fa fa 00 00 00 01 fa fa fa fa 00 00 00 00
ffffa00009061500: 05 fa fa fa fa fa fa fa 00 04 fa fa fa fa fa fa
>
ffffa00009061580: 00 03 fa fa fa fa fa fa 00 00 00 00 00 00 fa fa
^
ffffa00009061600: fa fa fa fa 00 01 fa fa fa fa fa fa 01 fa fa fa
ffffa00009061680: fa fa fa fa 00 01 fa fa fa fa fa fa 04 fa fa fa
==================================================================
Digging into this indeed shows that the clock divider array is
lacking a final fence, and that the clock subsystems goes in the
weeds. Oh well.
Let's add the empty structure that indicates the end of the array.
Fixes: bd6f48546b9c ("net: stmmac: dwmac-meson8b: Fix the RGMII TX delay on Meson8b/8m2 SoCs")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Haxby [Sat, 18 Apr 2020 15:30:49 +0000 (16:30 +0100)]
ipv6: fix restrict IPV6_ADDRFORM operation
Commit
b6f6118901d1 ("ipv6: restrict IPV6_ADDRFORM operation") fixed a
problem found by syzbot an unfortunate logic error meant that it
also broke IPV6_ADDRFORM.
Rearrange the checks so that the earlier test is just one of the series
of checks made before moving the socket from IPv6 to IPv4.
Fixes: b6f6118901d1 ("ipv6: restrict IPV6_ADDRFORM operation")
Signed-off-by: John Haxby <john.haxby@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Tang Bin [Sat, 18 Apr 2020 08:51:06 +0000 (16:51 +0800)]
net: systemport: Omit superfluous error message in bcm_sysport_probe()
In the function bcm_sysport_probe(), when get irq failed, the function
platform_get_irq() logs an error message, so remove redundant message
here.
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tonghao Zhang [Thu, 16 Apr 2020 18:57:31 +0000 (02:57 +0800)]
net: openvswitch: ovs_ct_exit to be done under ovs_lock
syzbot wrote:
| =============================
| WARNING: suspicious RCU usage
| 5.7.0-rc1+ #45 Not tainted
| -----------------------------
| net/openvswitch/conntrack.c:1898 RCU-list traversed in non-reader section!!
|
| other info that might help us debug this:
| rcu_scheduler_active = 2, debug_locks = 1
| ...
|
| stack backtrace:
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014
| Workqueue: netns cleanup_net
| Call Trace:
| ...
| ovs_ct_exit
| ovs_exit_net
| ops_exit_list.isra.7
| cleanup_net
| process_one_work
| worker_thread
To avoid that warning, invoke the ovs_ct_exit under ovs_lock and add
lockdep_ovsl_is_held as optional lockdep expression.
Link: https://lore.kernel.org/lkml/000000000000e642a905a0cbee6e@google.com
Fixes: 11efd5cb04a1 ("openvswitch: Support conntrack zone limit")
Cc: Pravin B Shelar <pshelar@ovn.org>
Cc: Yi-Hung Wei <yihung.wei@gmail.com>
Reported-by: syzbot+7ef50afd3a211f879112@syzkaller.appspotmail.com
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hillf Danton [Sat, 18 Apr 2020 08:28:32 +0000 (16:28 +0800)]
netfilter: nat: fix error handling upon registering inet hook
A case of warning was reported by syzbot.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 19934 at net/netfilter/nf_nat_core.c:1106
nf_nat_unregister_fn+0x532/0x5c0 net/netfilter/nf_nat_core.c:1106
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 19934 Comm: syz-executor.5 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x188/0x20d lib/dump_stack.c:118
panic+0x2e3/0x75c kernel/panic.c:221
__warn.cold+0x2f/0x35 kernel/panic.c:582
report_bug+0x27b/0x2f0 lib/bug.c:195
fixup_bug arch/x86/kernel/traps.c:175 [inline]
fixup_bug arch/x86/kernel/traps.c:170 [inline]
do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:nf_nat_unregister_fn+0x532/0x5c0 net/netfilter/nf_nat_core.c:1106
Code: ff df 48 c1 ea 03 80 3c 02 00 75 75 48 8b 44 24 10 4c 89 ef 48 c7 00 00 00 00 00 e8 e8 f8 53 fb e9 4d fe ff ff e8 ee 9c 16 fb <0f> 0b e9 41 fe ff ff e8 e2 45 54 fb e9 b5 fd ff ff 48 8b 7c 24 20
RSP: 0018:
ffffc90005487208 EFLAGS:
00010246
RAX:
0000000000040000 RBX:
0000000000000004 RCX:
ffffc9001444a000
RDX:
0000000000040000 RSI:
ffffffff865c94a2 RDI:
0000000000000005
RBP:
ffff88808b5cf000 R08:
ffff8880a2620140 R09:
fffffbfff14bcd79
R10:
ffffc90005487208 R11:
fffffbfff14bcd78 R12:
0000000000000000
R13:
0000000000000001 R14:
0000000000000001 R15:
0000000000000000
nf_nat_ipv6_unregister_fn net/netfilter/nf_nat_proto.c:1017 [inline]
nf_nat_inet_register_fn net/netfilter/nf_nat_proto.c:1038 [inline]
nf_nat_inet_register_fn+0xfc/0x140 net/netfilter/nf_nat_proto.c:1023
nf_tables_register_hook net/netfilter/nf_tables_api.c:224 [inline]
nf_tables_addchain.constprop.0+0x82e/0x13c0 net/netfilter/nf_tables_api.c:1981
nf_tables_newchain+0xf68/0x16a0 net/netfilter/nf_tables_api.c:2235
nfnetlink_rcv_batch+0x83a/0x1610 net/netfilter/nfnetlink.c:433
nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline]
nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:561
netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362
___sys_sendmsg+0x100/0x170 net/socket.c:2416
__sys_sendmsg+0xec/0x1b0 net/socket.c:2449
do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
and to quiesce it, unregister NFPROTO_IPV6 hook instead of NFPROTO_INET
in case of failing to register NFPROTO_IPV4 hook.
Reported-by: syzbot <syzbot+33e06702fd6cffc24c40@syzkaller.appspotmail.com>
Fixes: d164385ec572 ("netfilter: nat: add inet family nat support")
Cc: Florian Westphal <fw@strlen.de>
Cc: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Eric Dumazet [Fri, 17 Apr 2020 14:10:23 +0000 (07:10 -0700)]
tcp: cache line align MAX_TCP_HEADER
TCP stack is dumb in how it cooks its output packets.
Depending on MAX_HEADER value, we might chose a bad ending point
for the headers.
If we align the end of TCP headers to cache line boundary, we
make sure to always use the smallest number of cache lines,
which always help.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 18 Apr 2020 22:43:20 +0000 (15:43 -0700)]
Merge branch 'mptcp-fixes'
Florian Westphal says:
====================
mptcp: fix 'attempt to release socket in state...' splats
These two patches fix error handling corner-cases where
inet_sock_destruct gets called for a mptcp_sk that is not in TCP_CLOSE
state. This results in unwanted error printks from the network stack.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Fri, 17 Apr 2020 07:28:23 +0000 (09:28 +0200)]
mptcp: fix 'Attempt to release TCP socket in state' warnings
We need to set sk_state to CLOSED, else we will get following:
IPv4: Attempt to release TCP socket in state 3
00000000b95f109e
IPv4: Attempt to release TCP socket in state 10
00000000b95f109e
First one is from inet_sock_destruct(), second one from
mptcp_sk_clone failure handling. Setting sk_state to CLOSED isn't
enough, we also need to orphan sk so it has DEAD flag set.
Otherwise, a very similar warning is printed from inet_sock_destruct().
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Fri, 17 Apr 2020 07:28:22 +0000 (09:28 +0200)]
mptcp: fix splat when incoming connection is never accepted before exit/close
Following snippet (replicated from syzkaller reproducer) generates
warning: "IPv4: Attempt to release TCP socket in state 1".
int main(void) {
struct sockaddr_in sin1 = { .sin_family = 2, .sin_port = 0x4e20,
.sin_addr.s_addr = 0x010000e0, };
struct sockaddr_in sin2 = { .sin_family = 2,
.sin_addr.s_addr = 0x0100007f, };
struct sockaddr_in sin3 = { .sin_family = 2, .sin_port = 0x4e20,
.sin_addr.s_addr = 0x0100007f, };
int r0 = socket(0x2, 0x1, 0x106);
int r1 = socket(0x2, 0x1, 0x106);
bind(r1, (void *)&sin1, sizeof(sin1));
connect(r1, (void *)&sin2, sizeof(sin2));
listen(r1, 3);
return connect(r0, (void *)&sin3, 0x4d);
}
Reason is that the newly generated mptcp socket is closed via the ulp
release of the tcp listener socket when its accept backlog gets purged.
To fix this, delay setting the ESTABLISHED state until after userspace
calls accept and via mptcp specific destructor.
Fixes: 58b09919626bf ("mptcp: create msk early")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/9
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>