Vinod Koul [Fri, 17 Aug 2018 12:30:29 +0000 (18:00 +0530)]
Merge branch 'topic/pl330' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:29:27 +0000 (17:59 +0530)]
Merge branch 'topic/imx' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:29:01 +0000 (17:59 +0530)]
Merge branch 'topic/xilinx' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:28:50 +0000 (17:58 +0530)]
Merge branch 'topic/ste' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:28:44 +0000 (17:58 +0530)]
Merge branch 'topic/renesas' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:28:40 +0000 (17:58 +0530)]
Merge branch 'topic/owl' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:28:31 +0000 (17:58 +0530)]
Merge branch 'topic/nbpfaxi' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:28:24 +0000 (17:58 +0530)]
Merge branch 'topic/mv_xor' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:28:07 +0000 (17:58 +0530)]
Merge branch 'topic/ioat' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:27:59 +0000 (17:57 +0530)]
Merge branch 'topic/intel' into for-linus
Vinod Koul [Fri, 17 Aug 2018 12:27:48 +0000 (17:57 +0530)]
Merge branch 'topic/async_tx' into for-linus
Manivannan Sadhasivam [Thu, 26 Jul 2018 05:06:57 +0000 (10:36 +0530)]
dmaengine: Add Actions Semi Owl family S900 DMA driver
Add Actions Semi Owl family S900 DMA driver.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Manivannan Sadhasivam [Thu, 26 Jul 2018 05:06:55 +0000 (10:36 +0530)]
dt-bindings: dmaengine: Add binding for Actions Semi Owl SoCs
Add devicetree binding for Actions Semi Owl SoCs DMA controller.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Yoshihiro Shimoda [Wed, 25 Jul 2018 08:27:04 +0000 (17:27 +0900)]
dmaengine: sh: rcar-dmac: Should not stop the DMAC by rcar_dmac_sync_tcr()
rcar_dmac_chan_get_residue() should not stop the DMAC, because
the commit
538603c6026c ("dmaengine: sh: rcar-dmac: avoid to write
CHCR.TE to 1 if TCR is set to 0") had fixed unexpected re-transferring
issue. But it had caused the next issue which might stop the cyclic
mode transferring. Thus, for example R-Car sound might be stopped
suddenly.
According to the commit
73a47bd0da66 ("dmaengine: rcar-dmac: use TCRB
instead of TCR for residue"), the purpose of clearing CHCR.DE bit is
flushing buffered data to calculate the exact residue.
Such the "exact" residue had been required by sh-sci driver. sh-sci
driver is calling dmaengine_pause() to stop transferring, and get
"exact" residue. Otherwise, it might receive extra data during
getting residue without pausing.
In rx_timer_fn() of sh-sci driver:
dmaengine_tx_status(); /* For checking roughly */
dmaengine_pause();
dmaengine_tx_status(); /* For getting residue */
dmaengine_terminate_all();
But, unfortunately the rcar-dmac driver didn't support dmaengine_pause()
at that time. So, the sh-sci driver cannot get the "exact" residue
without stopping the transferring, because rcar-dmac is buffering data
inside.
Because of these backgrounds, rcar-dmac had been cleared/set CHCR.DE
bit in rcar_dmac_chan_get_residue() to synchronizing data and getting
"exact" residue.
However, rcar-dmac driver has rcar_dmac_chan_pause() now, and clearing
CHCR.DE bit in rcar_dmac_chan_get_residue() doesn't need anymore.
So, this patch removes the rcar_dmac_sync_tcr().
Fixes: 73a47bd0da66 ("dmaengine: rcar-dmac: use TCRB instead of TCR for residue")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Huang Shijie [Thu, 26 Jul 2018 06:45:54 +0000 (14:45 +0800)]
dmaengine: mic_x100_dma: use the new helper to simplify the code
Use dmaenginem_async_device_register() to simplify the code:
remove the mic_dma_unregister_dma_device()
Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Huang Shijie [Thu, 26 Jul 2018 06:45:53 +0000 (14:45 +0800)]
dmaengine: add a new helper dmaenginem_async_device_register
This patch adds the dmaenginem_async_device_register for DMA code.
Use the Devres to call the release for the DMA engine driver.
Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Mon, 23 Jul 2018 17:46:11 +0000 (01:46 +0800)]
dmaengine: imx-sdma: add memcpy interface
Add MEMCPY capability for imx-sdma driver.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Mon, 23 Jul 2018 17:46:10 +0000 (01:46 +0800)]
dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff'
Add macro SDMA_BD_MAX_CNT to replace '0xffff'.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Peter Ujfalusi [Wed, 18 Jul 2018 09:29:57 +0000 (12:29 +0300)]
dmaengine: dma_request_chan_by_mask() to handle deferred probing
If there are no DMA devices registered yet, return with EPROBE_DEFER
similarly to the case when requesting a slave channel.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
John Keeping [Tue, 17 Jul 2018 10:48:16 +0000 (11:48 +0100)]
dmaengine: pl330: fix irq race with terminate_all
In pl330_update() when checking if a channel has been aborted, the
channel's lock is not taken, only the overall pl330_dmac lock. But in
pl330_terminate_all() the aborted flag (req_running==-1) is set under
the channel lock and not the pl330_dmac lock.
With threaded interrupts, this leads to a potential race:
pl330_terminate_all pl330_update
------------------- ------------
lock channel
entry
lock pl330
_stop channel
unlock pl330
lock pl330
check req_running != -1
req_running = -1
_start channel
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Vinod Koul [Wed, 25 Jul 2018 12:24:08 +0000 (17:54 +0530)]
dmaengine: Revert "dmaengine: mv_xor_v2: enable COMPILE_TEST"
This reverts commit
31d5e6b72439: ("dmaengine: mv_xor_v2: enable
COMPILE_TEST") as enabling causing bunch of build failures.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hanna Hawa [Tue, 24 Jul 2018 13:40:30 +0000 (16:40 +0300)]
dmaengine: mv_xor_v2: use {lower,upper}_32_bits to configure HW descriptor address
>> drivers/dma/mv_xor_v2.c:647:36: sparse: constant 0xFFFF00000000 is so big it is long
include/linux/device.h:678:13: sparse: undefined identifier '__builtin_mul_overflow'
include/linux/device.h:678:13: sparse: call with no type!
Use lower_32_bits and upper_32_bits to set the hw_desq address, instead of
using constant.
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hanna Hawa [Tue, 17 Jul 2018 10:30:03 +0000 (13:30 +0300)]
dmaengine: mv_xor_v2: enable COMPILE_TEST
To get more coverage, enable COMPILE_TEST for this driver.
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hanna Hawa [Tue, 17 Jul 2018 10:30:02 +0000 (13:30 +0300)]
dmaengine: mv_xor_v2: move unmap to before callback
Completion callback should happen after dma_descriptor_unmap() has
happened. This allow the cache invalidate to happen and ensure that
the data accessed by the upper layer is in memory that was from DMA
rather than stale data. On some architecture this is done by the
hardware, however we should make the code consistent to not cause
confusion.
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hanna Hawa [Tue, 17 Jul 2018 10:30:01 +0000 (13:30 +0300)]
dmaengine: mv_xor_v2: convert callback to helper function
This is in preparation of moving to a callback that provides results to the
callback for the transaction. The conversion will maintain current behavior
and the driver must convert to new callback mechanism at a later time in
order to receive results.
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hanna Hawa [Tue, 17 Jul 2018 10:30:00 +0000 (13:30 +0300)]
dmaengine: mv_xor_v2: kill the tasklets upon exit
The mv_xor_v2 driver uses a tasklet, initialized during the probe()
routine. However, it forgets to cleanup the tasklet using
tasklet_kill() function during the remove() routine, which this patch
fixes. This prevents the tasklet from potentially running after the
module has been removed.
Fixes: 19a340b1a820 ("dmaengine: mv_xor_v2: new driver")
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hanna Hawa [Tue, 17 Jul 2018 10:29:59 +0000 (13:29 +0300)]
dmaengine: mv_xor_v2: explicitly freeup irq
dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().
The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Yoshihiro Shimoda [Wed, 11 Jul 2018 02:10:16 +0000 (11:10 +0900)]
dmaengine: sh: rcar-dmac: Add dma_pause operation
This patch adds dma_pause operation. This patch is based on
Muhammad Hamza Farooq's patch.
After this patch applied, an issue that the sh-sci driver with
high baud rate might cause data lost disappeared because the DMAC
is possible to transmit between [1] and [2] below, and then
the residue of [1] is not true:
In rx_timer_fn() of the sh-sci.c:
dmaengine_pause();
...
dmaengine_tx_status(); /* [1] */
...
dmaengine_terminate_all(); /* [2] */
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Yoshihiro Shimoda [Wed, 11 Jul 2018 02:10:15 +0000 (11:10 +0900)]
dmaengine: sh: rcar-dmac: add a new function to clear CHCR.DE with barrier
This patch adds a new function rcar_dmac_clear_chcr_de() to simplify
adding pause function later.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Andy Shevchenko [Tue, 10 Jul 2018 11:49:42 +0000 (14:49 +0300)]
dmaengine: idma64: Support dmaengine_terminate_sync()
It appears that the driver misses the support of dmaengine_terminate_sync().
Since many of callers expects this behaviour implement the new
device_synchronize() callback to allow proper synchronization when stopping
a channel.
Fixes: b36f09c3c441 ("dmaengine: Add transfer termination synchronization support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Andy Shevchenko [Tue, 10 Jul 2018 11:49:08 +0000 (14:49 +0300)]
dmaengine: hsu: Support dmaengine_terminate_sync()
It appears that the driver misses the support of dmaengine_terminate_sync().
Since many of callers expects this behaviour implement the new
device_synchronize() callback to allow proper synchronization when stopping
a channel.
Fixes: b36f09c3c441 ("dmaengine: Add transfer termination synchronization support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Yoshihiro Shimoda [Mon, 2 Jul 2018 09:18:03 +0000 (18:18 +0900)]
dmaengine: sh: rcar-dmac: avoid to write CHCR.TE to 1 if TCR is set to 0
This patch fixes an issue that unexpected retransfering happens
if TCR is set to 0 before rcar_dmac_sync_tcr() writes DE bit to
the CHCR register. For example, sh-sci driver can reproduce this
issue like below:
In rx_timer_fn(): /* CHCR DE bit may be set to 1 */
dmaengine_tx_status()
rcar_dmac_tx_status()
rcar_dmac_chan_get_residue()
rcar_dmac_sync_tcr() /* TCR is possible to be set to 0 */
According to the description of commit
73a47bd0da66 ("dmaengine:
rcar-dmac: use TCRB instead of TCR for residue"), "this buffered data
will be transferred if CHCR::DE bit was cleared". So, this patch
doesn't need to check TCRB register.
Fixes: 73a47bd0da66 ("dmaengine: rcar-dmac: use TCRB instead of TCR for residue")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Vinod Koul [Mon, 9 Jul 2018 14:38:48 +0000 (20:08 +0530)]
dmaengine: pl330: remove set but unused variable
Compiler complains (with W=1):
drivers/dma/pl330.c: In function ‘pl330_release_channel’:
drivers/dma/pl330.c:1782:21: warning:
variable ‘pl330’ set but not used [-Wunused-but-set-variable]
struct pl330_dmac *pl330;
^~~~~
Remove the pl330 variable in pl330_release_channel as it is set but
never used.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Vinod Koul [Mon, 9 Jul 2018 11:39:58 +0000 (17:09 +0530)]
dmaengine: pl330: Mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Benjamin Gaignard [Fri, 6 Jul 2018 13:02:20 +0000 (15:02 +0200)]
dmaengine: stm32: replace "%p" with "%pK"
The format specifier "%p" can leak kernel addresses.
Use "%pK" instead.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Marek Szyprowski [Mon, 2 Jul 2018 13:08:10 +0000 (15:08 +0200)]
dmaengine: add support for reporting pause and resume separately
'cmd_pause' DMA channel capability means that respective DMA engine
supports both pausing and resuming given DMA channel. However, in some
cases it is important to know if DMA channel can be paused without the
need to resume it. This is a typical requirement for proper residue
reading on transfer timeout in UART drivers. There are also some DMA
engines with limited hardware, which doesn't really support resuming.
Reporting pause and resume capabilities separately allows UART drivers to
properly check for the really required capabilities and operate in DMA
mode also in systems with limited DMA hardware. On the other hand drivers,
which rely on full channel suspend/resume support, should now check for
both 'pause' and 'resume' features.
Existing clients of dma_get_slave_caps() have been checked and the only
driver which rely on proper channel resuming is soc-generic-dmaengine-pcm
driver, which has been updated to check the newly added capability.
Existing 'cmd_pause' now only indicates that DMA engine support pausing
given DMA channel.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Kuninori Morimoto [Tue, 3 Jul 2018 00:29:29 +0000 (00:29 +0000)]
dmaengine: rcar-dmac: clear channel register when error
We need to clear channel register in error case as recovery.
The channel is already stopped in such case, thus we don't need to call
rcar_dmac_chan_halt() before clearing.
rcar_dmac_chan_halt() will clear and confirm DE bit.
But it will be failed because channel is already stopped in error case.
In other words, we shouldn't call it then.
Reported-by: Hiroki Negishi <hiroki.negishi.bx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Hiroki Negishi <hiroki.negishi.bx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Geert Uytterhoeven [Mon, 2 Jul 2018 15:02:06 +0000 (17:02 +0200)]
dmaengine: rcar-dmac: Disable interrupts while stopping channels
During system reboot or halt, with lockdep enabled:
================================
WARNING: inconsistent lock state
4.18.0-rc1-salvator-x-00002-g9203dbec90a68103 #41 Tainted: G W
--------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
reboot/2779 [HC0[0]:SC0[0]:HE1:SE1] takes:
0000000098ae4ad3 (&(&rchan->lock)->rlock){?.-.}, at: rcar_dmac_shutdown+0x58/0x6c
{IN-HARDIRQ-W} state was registered at:
lock_acquire+0x208/0x238
_raw_spin_lock+0x40/0x54
rcar_dmac_isr_channel+0x28/0x200
__handle_irq_event_percpu+0x1c0/0x3c8
handle_irq_event_percpu+0x34/0x88
handle_irq_event+0x48/0x78
handle_fasteoi_irq+0xc4/0x12c
generic_handle_irq+0x18/0x2c
__handle_domain_irq+0xa8/0xac
gic_handle_irq+0x78/0xbc
el1_irq+0xec/0x1c0
arch_cpu_idle+0xe8/0x1bc
default_idle_call+0x2c/0x30
do_idle+0x144/0x234
cpu_startup_entry+0x20/0x24
rest_init+0x27c/0x290
start_kernel+0x430/0x45c
irq event stamp: 12177
hardirqs last enabled at (12177): [<
ffffff800881d804>] _raw_spin_unlock_irq+0x2c/0x4c
hardirqs last disabled at (12176): [<
ffffff800881d638>] _raw_spin_lock_irq+0x1c/0x60
softirqs last enabled at (11948): [<
ffffff8008081da8>] __do_softirq+0x160/0x4ec
softirqs last disabled at (11935): [<
ffffff80080ec948>] irq_exit+0xa0/0xfc
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&rchan->lock)->rlock);
<Interrupt>
lock(&(&rchan->lock)->rlock);
*** DEADLOCK ***
3 locks held by reboot/2779:
#0:
00000000bfabfa74 (reboot_mutex){+.+.}, at: sys_reboot+0xdc/0x208
#1:
00000000c75d8c3a (&dev->mutex){....}, at: device_shutdown+0xc8/0x1c4
#2:
00000000ebec58ec (&dev->mutex){....}, at: device_shutdown+0xd8/0x1c4
stack backtrace:
CPU: 6 PID: 2779 Comm: reboot Tainted: G W
4.18.0-rc1-salvator-x-00002-g9203dbec90a68103 #41
Hardware name: Renesas Salvator-X 2nd version board based on r8a7795 ES2.0+ (DT)
Call trace:
dump_backtrace+0x0/0x148
show_stack+0x14/0x1c
dump_stack+0xb0/0xf0
print_usage_bug.part.26+0x1c4/0x27c
mark_lock+0x38c/0x610
__lock_acquire+0x3fc/0x14d4
lock_acquire+0x208/0x238
_raw_spin_lock+0x40/0x54
rcar_dmac_shutdown+0x58/0x6c
platform_drv_shutdown+0x20/0x2c
device_shutdown+0x160/0x1c4
kernel_restart_prepare+0x34/0x3c
kernel_restart+0x14/0x5c
sys_reboot+0x160/0x208
el0_svc_naked+0x30/0x34
rcar_dmac_stop_all_chan() takes the channel lock while stopping a
channel, but does not disable interrupts, leading to a deadlock when a
DMAC interrupt comes in. Before, the same code block was called from an
interrupt handler, hence taking the spinlock was sufficient.
Fix this by disabling local interrupts while taking the spinlock.
Fixes: 9203dbec90a68103 ("dmaengine: rcar-dmac: don't use DMAC error interrupt")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Gustavo A. R. Silva [Mon, 2 Jul 2018 18:06:05 +0000 (13:06 -0500)]
dmaengine: nbpfaxi: Mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Kuninori Morimoto [Wed, 4 Jul 2018 00:34:10 +0000 (00:34 +0000)]
dmaengine: rcar-dmac: convert to SPDX identifiers
This patch is using C++ comment style for SPDX line only,
because driver author want it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Wed, 4 Jul 2018 10:06:42 +0000 (18:06 +0800)]
dmaengine: imx-sdma: add missing structure description
Some member description or colons missing cause build warning with
'W=1' as below:
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'vd' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'num_bd' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'bd_phys' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'buf_tail' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'buf_ptail' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'period_len' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'chn_real_count' not described in 'sdma_desc'
drivers/dma/imx-sdma.c:326: warning: Function parameter or member 'chn_count' not described in 'sdma_desc
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reported-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Vinod Koul [Mon, 2 Jul 2018 13:12:51 +0000 (18:42 +0530)]
dmaengine: imx-sdma: remove unused variable
The variable is no longer used, though it is set, so remove it
drivers/dma/imx-sdma.c:1298:6:
warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
int ret, i, count;
^~~
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Vinod Koul [Mon, 2 Jul 2018 13:07:27 +0000 (18:37 +0530)]
dmaengine: imx-sdma: Use GFP_NOWAIT for dma allocations
The memory allocation in DMA callbacks should use GFP_NOWAIT, so
update this one and fix code alignment for this call while at it.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Vinod Koul [Mon, 2 Jul 2018 13:04:02 +0000 (18:34 +0530)]
dmaengine: imx-sdma: Fix some typos
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Tue, 19 Jun 2018 16:57:04 +0000 (00:57 +0800)]
dmaengine: imx-sdma: alloclate bd memory from dma pool
dma_terminate_all maybe called in interrupt context which means
WARN_ON() will be triggered as below when bd memory freed. Allocat
bd memory from dma pool instead.
[ 29.161079] WARNING: CPU: 1 PID: 533 at ./include/linux/dma-mapping.h:541 sdma_free_bd+0xa4/0xb4
[ 29.169883] Modules linked in:
[ 29.172990] CPU: 1 PID: 533 Comm: mpegaudioparse0 Not tainted
4.18.0-rc1-next-20180618-00009-gf79f22c #20
[ 29.182597] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[ 29.189163] Backtrace:
[ 29.191685] [<
c010d1e0>] (dump_backtrace) from [<
c010d4a0>] (show_stack+0x18/0x1c)
[ 29.199306] r7:
00000000 r6:
600f0093 r5:
00000000 r4:
c107db7c
[ 29.205029] [<
c010d488>] (show_stack) from [<
c0a5bba0>] (dump_stack+0xb4/0xe8)
[ 29.212312] [<
c0a5baec>] (dump_stack) from [<
c012703c>] (__warn+0x104/0x130)
[ 29.219411] r9:
ec3e817c r8:
0000021d r7:
00000009 r6:
c0d1d440 r5:
00000000 r4:
00000000
[ 29.227204] [<
c0126f38>] (__warn) from [<
c0127180>] (warn_slowpath_null+0x44/0x50)
[ 29.234821] r8:
ed129dc4 r7:
c0b01978 r6:
c04d4e90 r5:
0000021d r4:
c0d1d440
[ 29.241574] [<
c012713c>] (warn_slowpath_null) from [<
c04d4e90>] (sdma_free_bd+0xa4/0xb4)
[ 29.249706] r6:
4c001000 r5:
f082e000 r4:
00000024
[ 29.254376] [<
c04d4dec>] (sdma_free_bd) from [<
c04d4eb4>] (sdma_desc_free+0x14/0x20)
[ 29.262163] r7:
ec3e8110 r6:
00000100 r5:
00000200 r4:
ecf89a00
[ 29.267873] [<
c04d4ea0>] (sdma_desc_free) from [<
c04d229c>] (vchan_dma_desc_free_list+0xa4/0xac)
[ 29.276697] r5:
00000200 r4:
ed129d9c
[ 29.280326] [<
c04d21f8>] (vchan_dma_desc_free_list) from [<
c04d482c>] (sdma_disable_channel_with_delay+0x14c/0x188)
[ 29.290808] r9:
ecae560c r8:
ec3e815c r7:
00000000 r6:
c1008908 r5:
ed129dc4 r4:
ec3e8110
[ 29.298605] [<
c04d46e0>] (sdma_disable_channel_with_delay) from [<
c07c5c84>] (snd_dmaengine_pcm_trigger+0x90/0x1b0)
[ 29.309087] r8:
ecae5000 r7:
ec940800 r6:
ed31bd80 r5:
ecadb200 r4:
ec26a700
[ 29.315855] [<
c07c5bf4>] (snd_dmaengine_pcm_trigger) from [<
c07dd800>] (soc_pcm_trigger+0xb4/0x130)
[ 29.324953] r8:
ecae5000 r7:
ec940800 r6:
00000000 r5:
ecadb200 r4:
ec26a700
[ 29.331716] [<
c07dd74c>] (soc_pcm_trigger) from [<
c07bc008>] (snd_pcm_do_stop+0x58/0x5c)
[ 29.339859] r9:
ecaed5a8 r8:
ed31bdc0 r7:
00000000 r6:
00000001 r5:
ecadb200 r4:
c0b9c4d0
[ 29.347652] [<
c07bbfb0>] (snd_pcm_do_stop) from [<
c07bbde8>] (snd_pcm_action_single+0x40/0x80)
[ 29.356315] [<
c07bbda8>] (snd_pcm_action_single) from [<
c07bbf1c>] (snd_pcm_action+0xf4/0xfc)
[ 29.364883] r7:
00000001 r6:
c0b9c4d0 r5:
ecadb2d4 r4:
ecadb200
[ 29.370593] [<
c07bbe28>] (snd_pcm_action) from [<
c07bc8dc>] (snd_pcm_drop+0x58/0x9c)
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Tue, 19 Jun 2018 16:57:03 +0000 (00:57 +0800)]
dmaengine: imx-sdma: add sdma_transfer_init to decrease code overlap
There are lot of codes overlap between prep_sg and prep_cyclic function.
Add sdma_transfer_init() function to elimated the code overlap.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Tue, 19 Jun 2018 16:57:02 +0000 (00:57 +0800)]
dmaengine: imx-sdma: remove the maximum limitation for bd numbers
No this limitation now after virtual dma used since bd is allocated
dynamically instead of static.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Tue, 19 Jun 2018 16:57:01 +0000 (00:57 +0800)]
dmaengine: imx-sdma: remove useless 'lock' and 'enabled' in 'struct sdma_channel'
Since 'sdmac->vc.lock' and 'sdmac->desc' can be used as 'lock' and
'enabled' in 'struct sdma_channel sdmac', remove them.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Robin Gong [Tue, 19 Jun 2018 16:57:00 +0000 (00:57 +0800)]
dmaengine: imx-sdma: add virt-dma support
The legacy sdma driver has below limitations or drawbacks:
1. Hardcode the max BDs number as "PAGE_SIZE / sizeof(*)", and alloc
one page size for one channel regardless of only few BDs needed
most time. But in few cases, the max PAGE_SIZE maybe not enough.
2. One SDMA channel can't stop immediatley once channel disabled which
means SDMA interrupt may come in after this channel terminated.There
are some patches for this corner case such as commit "
2746e2c389f9",
but not cover non-cyclic.
The common virt-dma overcomes the above limitations. It can alloc bd
dynamically and free bd once this tx transfer done. No memory wasted or
maximum limititation here, only depends on how many memory can be requested
from kernel. For No.2, such issue can be workaround by checking if there
is available descript("sdmac->desc") now once the unwanted interrupt
coming. At last the common virt-dma is easier for sdma driver maintain.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Sascha Hauer [Tue, 19 Jun 2018 16:56:59 +0000 (00:56 +0800)]
dmaengine: imx-sdma: factor out a struct sdma_desc from struct sdma_channel
This is a preparation step to make the adding of virt-dma easier.
We create a struct sdma_desc, move some fields from struct sdma_channel
there and add a pointer from the former to the latter. For now we
allocate the data statically in struct sdma_channel, but with
virt-dma support it will be dynamically allocated.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Kees Cook [Fri, 29 Jun 2018 18:51:07 +0000 (11:51 -0700)]
dmaengine: ste_dma40: Remove VLA usage
In the quest to remove all stack VLA usage from the kernel[1], this
switches to using a pre-allocated scratch register space, set up with
all other other allocations.
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Radhey Shyam Pandey [Wed, 13 Jun 2018 07:34:48 +0000 (13:04 +0530)]
dmaengine: xilinx_dma: Enable VDMA S2MM vertical flip support
Vertical flip state is exported in xilinx_vdma_config and depending
on IP configuration(c_enable_vert_flip) vertical flip state is
programmed in hardware.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Radhey Shyam Pandey [Wed, 13 Jun 2018 07:34:47 +0000 (13:04 +0530)]
dt-bindings: dmaengine: xilinx_dma: Add VDMA vertical flip property
The AXI VDMA core supports Vertical flip in S2MM path when Enable
Vertical Flip (Advanced tab) is selected. To allow vertical flip
programming define an optional 'xlnx,enable-vert-flip' channel
child node property.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Kedareswara rao Appana <appanad@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Kuninori Morimoto [Fri, 15 Jun 2018 00:53:33 +0000 (00:53 +0000)]
dmaengine: rcar-dmac: don't use DMAC error interrupt
rcar-dmac has 2 types of interrupt, 1) error IRQ (for all),
2) IRQ for each channels.
If error happens on some channels, the error IRQ will be handled
by 1), and "all" channels will be restarted.
But in this design, error handling itself will be problem for
non error channel users.
This patch removes 1) handler, and handles error IRQ on 2)
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
[Kuninori: updated patch to adjust DMACHCR/DMAOR]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Nguyen Viet Dung <nv-dung@jinso.co.jp>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Hiroyuki Yokoyama [Wed, 20 Jun 2018 12:01:37 +0000 (14:01 +0200)]
dmaengine: rcar-dmac: Document R8A77990 bindings
Renesas R-Car E3 (R8A77990) SoC also has the R-Car gen2/3 compatible DMA
controllers, so document the SoC specific binding.
Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Dave Jiang [Mon, 11 Jun 2018 19:49:03 +0000 (12:49 -0700)]
dmaengine: ioatdma: set the completion address register after channel reset
It seems that starting with Skylake Xeon, channel reset clears the
completion address register. Make sure the completion address register is
set again after reset.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Kyle Spiers [Fri, 1 Jun 2018 20:20:16 +0000 (13:20 -0700)]
async_pq: Remove VLA usage
In the quest to remove VLAs from the kernel[1], this adjusts the
allocation of coefs and blocks to use the existing maximum values
(with one new define, MAX_DISKS for coefs, and a reuse of the
existing NDISKS for blocks).
[1] https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Kyle Spiers <ksspiers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Linus Torvalds [Sat, 16 Jun 2018 23:04:49 +0000 (08:04 +0900)]
Linux 4.18-rc1
Linus Torvalds [Sat, 16 Jun 2018 20:37:55 +0000 (05:37 +0900)]
Merge tag 'for-linus-
20180616' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A collection of fixes that should go into -rc1. This contains:
- bsg_open vs bsg_unregister race fix (Anatoliy)
- NVMe pull request from Christoph, with fixes for regressions in
this window, FC connect/reconnect path code unification, and a
trace point addition.
- timeout fix (Christoph)
- remove a few unused functions (Christoph)
- blk-mq tag_set reinit fix (Roman)"
* tag 'for-linus-
20180616' of git://git.kernel.dk/linux-block:
bsg: fix race of bsg_open and bsg_unregister
block: remov blk_queue_invalidate_tags
nvme-fabrics: fix and refine state checks in __nvmf_check_ready
nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
nvme-fabrics: refactor queue ready check
blk-mq: remove blk_mq_tagset_iter
nvme: remove nvme_reinit_tagset
nvme-fc: fix nulling of queue data on reconnect
nvme-fc: remove reinit_request routine
blk-mq: don't time out requests again that are in the timeout handler
nvme-fc: change controllers first connect to use reconnect path
nvme: don't rely on the changed namespace list log
nvmet: free smart-log buffer after use
nvme-rdma: fix error flow during mapping request data
nvme: add bio remapping tracepoint
nvme: fix NULL pointer dereference in nvme_init_subsystem
blk-mq: reinit q->tag_set_list entry only after grace period
Linus Torvalds [Sat, 16 Jun 2018 20:25:18 +0000 (05:25 +0900)]
Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental
Pull documentation fixes from Mauro Carvalho Chehab:
"This solves a series of broken links for files under Documentation,
and improves a script meant to detect such broken links (see
scripts/documentation-file-ref-check).
The changes on this series are:
- can.rst: fix a footnote reference;
- crypto_engine.rst: Fix two parsing warnings;
- Fix a lot of broken references to Documentation/*;
- improve the scripts/documentation-file-ref-check script, in order
to help detecting/fixing broken references, preventing
false-positives.
After this patch series, only 33 broken references to doc files are
detected by scripts/documentation-file-ref-check"
* tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits)
fix a series of Documentation/ broken file name references
Documentation: rstFlatTable.py: fix a broken reference
ABI: sysfs-devices-system-cpu: remove a broken reference
devicetree: fix a series of wrong file references
devicetree: fix name of pinctrl-bindings.txt
devicetree: fix some bindings file names
MAINTAINERS: fix location of DT npcm files
MAINTAINERS: fix location of some display DT bindings
kernel-parameters.txt: fix pointers to sound parameters
bindings: nvmem/zii: Fix location of nvmem.txt
docs: Fix more broken references
scripts/documentation-file-ref-check: check tools/*/Documentation
scripts/documentation-file-ref-check: get rid of false-positives
scripts/documentation-file-ref-check: hint: dash or underline
scripts/documentation-file-ref-check: add a fix logic for DT
scripts/documentation-file-ref-check: accept more wildcards at filenames
scripts/documentation-file-ref-check: fix help message
media: max2175: fix location of driver's companion documentation
media: v4l: fix broken video4linux docs locations
media: dvb: point to the location of the old README.dvb-usb file
...
Linus Torvalds [Sat, 16 Jun 2018 20:06:18 +0000 (05:06 +0900)]
Merge tag 'fsnotify_for_v4.18-rc1' of git://git./linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"fsnotify cleanups unifying handling of different watch types.
This is the shortened fsnotify series from Amir with the last five
patches pulled out. Amir has modified those patches to not change
struct inode but obviously it's too late for those to go into this
merge window"
* tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: add fsnotify_add_inode_mark() wrappers
fanotify: generalize fanotify_should_send_event()
fsnotify: generalize send_to_group()
fsnotify: generalize iteration of marks by object type
fsnotify: introduce marks iteration helpers
fsnotify: remove redundant arguments to handle_event()
fsnotify: use type id to identify connector object type
Linus Torvalds [Sat, 16 Jun 2018 20:00:24 +0000 (05:00 +0900)]
Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"There is nothing really major here, few small fixes, some cleanups and
dead drivers removal:
- mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
- add missing module license tags to omap/omapfb driver (Arnd
Bergmann)
- add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
Bergmann)
- convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
(Jia-Ju Bai)
- allow COMPILE_TEST build for viafb driver (media part was reviewed
by media subsystem Maintainer)
- remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
drivers (drm parts were acked by shmob-drm driver Maintainer)
- remove unused auo_k190xfb drivers
- misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
Shevchenko, Colin Ian King)"
* tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
fb_omap2: add gpiolib dependency
video/omap: add module license tags
MAINTAINERS: make omapfb orphan
video: fbdev: pxafb: match_string() conversion fixup
video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
video: fbdev: pxafb: Convert to use match_string() helper
video: fbdev: via: allow COMPILE_TEST build
video: fbdev: remove unused sh_mobile_meram driver
drm: shmobile: remove unused MERAM support
video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
video: fbdev: remove unused auo_k190xfb drivers
video: omap: Improve a size determination in omapfb_do_probe()
video: sm501fb: Improve a size determination in sm501fb_probe()
video: fbdev-MMP: Improve a size determination in path_init()
video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
...
Linus Torvalds [Sat, 16 Jun 2018 07:32:04 +0000 (16:32 +0900)]
Merge branch 'afs-proc' of git://git./linux/kernel/git/viro/vfs
Pull AFS updates from Al Viro:
"Assorted AFS stuff - ended up in vfs.git since most of that consists
of David's AFS-related followups to Christoph's procfs series"
* 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
afs: Optimise callback breaking by not repeating volume lookup
afs: Display manually added cells in dynamic root mount
afs: Enable IPv6 DNS lookups
afs: Show all of a server's addresses in /proc/fs/afs/servers
afs: Handle CONFIG_PROC_FS=n
proc: Make inline name size calculation automatic
afs: Implement network namespacing
afs: Mark afs_net::ws_cell as __rcu and set using rcu functions
afs: Fix a Sparse warning in xdr_decode_AFSFetchStatus()
proc: Add a way to make network proc files writable
afs: Rearrange fs/afs/proc.c to remove remaining predeclarations.
afs: Rearrange fs/afs/proc.c to move the show routines up
afs: Rearrange fs/afs/proc.c by moving fops and open functions down
afs: Move /proc management functions to the end of the file
Linus Torvalds [Sat, 16 Jun 2018 07:21:50 +0000 (16:21 +0900)]
Merge branch 'work.compat' of git://git./linux/kernel/git/viro/vfs
Pull compat updates from Al Viro:
"Some biarch patches - getting rid of assorted (mis)uses of
compat_alloc_user_space().
Not much in that area this cycle..."
* 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
orangefs: simplify compat ioctl handling
signalfd: lift sigmask copyin and size checks to callers of do_signalfd4()
vmsplice(): lift importing iovec into vmsplice(2) and compat counterpart
Linus Torvalds [Sat, 16 Jun 2018 07:11:40 +0000 (16:11 +0900)]
Merge branch 'work.aio' of git://git./linux/kernel/git/viro/vfs
Pull aio fixes from Al Viro:
"Assorted AIO followups and fixes"
* 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
eventpoll: switch to ->poll_mask
aio: only return events requested in poll_mask() for IOCB_CMD_POLL
eventfd: only return events requested in poll_mask()
aio: mark __aio_sigset::sigmask const
Linus Torvalds [Fri, 15 Jun 2018 22:39:34 +0000 (07:39 +0900)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Various netfilter fixlets from Pablo and the netfilter team.
2) Fix regression in IPVS caused by lack of PMTU exceptions on local
routes in ipv6, from Julian Anastasov.
3) Check pskb_trim_rcsum for failure in DSA, from Zhouyang Jia.
4) Don't crash on poll in TLS, from Daniel Borkmann.
5) Revert SO_REUSE{ADDR,PORT} change, it regresses various things
including Avahi mDNS. From Bart Van Assche.
6) Missing of_node_put in qcom/emac driver, from Yue Haibing.
7) We lack checking of the TCP checking in one special case during SYN
receive, from Frank van der Linden.
8) Fix module init error paths of mac80211 hwsim, from Johannes Berg.
9) Handle 802.1ad properly in stmmac driver, from Elad Nachman.
10) Must grab HW caps before doing quirk checks in stmmac driver, from
Jose Abreu.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits)
net: stmmac: Run HWIF Quirks after getting HW caps
neighbour: skip NTF_EXT_LEARNED entries during forced gc
net: cxgb3: add error handling for sysfs_create_group
tls: fix waitall behavior in tls_sw_recvmsg
tls: fix use-after-free in tls_push_record
l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl()
l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels
mlxsw: spectrum_switchdev: Fix port_vlan refcounting
mlxsw: spectrum_router: Align with new route replace logic
mlxsw: spectrum_router: Allow appending to dev-only routes
ipv6: Only emit append events for appended routes
stmmac: added support for 802.1ad vlan stripping
cfg80211: fix rcu in cfg80211_unregister_wdev
mac80211: Move up init of TXQs
mac80211_hwsim: fix module init error paths
cfg80211: initialize sinfo in cfg80211_get_station
nl80211: fix some kernel doc tag mistakes
hv_netvsc: Fix the variable sizes in ipsecv2 and rsc offload
rds: avoid unenecessary cong_update in loop transport
l2tp: clean up stale tunnel or session in pppol2tp_connect's error path
...
Linus Torvalds [Fri, 15 Jun 2018 22:36:39 +0000 (07:36 +0900)]
Merge tag 'modules-for-v4.18' of git://git./linux/kernel/git/jeyu/linux
Pull module updates from Jessica Yu:
"Minor code cleanup and also allow sig_enforce param to be shown in
sysfs with CONFIG_MODULE_SIG_FORCE"
* tag 'modules-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Allow to always show the status of modsign
module: Do not access sig_enforce directly
Linus Torvalds [Fri, 15 Jun 2018 21:50:51 +0000 (06:50 +0900)]
Merge branch 'for-linus-4.18-rc1' of git://git./linux/kernel/git/rw/uml
Pull uml updates from Richard Weinberger:
"Minor updates for UML:
- fixes for our new vector network driver by Anton
- initcall cleanup by Alexander
- We have a new mailinglist, sourceforge.net sucks"
* 'for-linus-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: Fix raw interface options
um: Fix initialization of vector queues
um: remove uml initcalls
um: Update mailing list address
Linus Torvalds [Fri, 15 Jun 2018 21:42:43 +0000 (06:42 +0900)]
Merge tag 'riscv-for-linus-4.18-merge_window' of git://git./linux/kernel/git/palmer/riscv-linux
Pull RISC-V updates from Palmer Dabbelt:
"This contains some small RISC-V updates I'd like to target for 4.18.
They are all fairly small this time. Here's a short summary, there's
more info in the commits/merges:
- a fix to __clear_user to respect the passed arguments.
- enough support for the perf subsystem to work with RISC-V's ISA
defined performance counters.
- support for sparse and cleanups suggested by it.
- support for R_RISCV_32 (a relocation, not the 32-bit ISA).
- some MAINTAINERS cleanups.
- the addition of CONFIG_HVC_RISCV_SBI to our defconfig, as it's
always present.
I've given these a simple build+boot test"
* tag 'riscv-for-linus-4.18-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
RISC-V: Add CONFIG_HVC_RISCV_SBI=y to defconfig
RISC-V: Handle R_RISCV_32 in modules
riscv/ftrace: Export _mcount when DYNAMIC_FTRACE isn't set
riscv: add riscv-specific predefines to CHECKFLAGS
riscv: split the declaration of __copy_user
riscv: no __user for probe_kernel_address()
riscv: use NULL instead of a plain 0
perf: riscv: Add Document for Future Porting Guide
perf: riscv: preliminary RISC-V support
MAINTAINERS: Update Albert's email, he's back at Berkeley
MAINTAINERS: Add myself as a maintainer for SiFive's drivers
riscv: Fix the bug in memory access fixup code
Linus Torvalds [Fri, 15 Jun 2018 21:37:04 +0000 (06:37 +0900)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull more kvm updates from Paolo Bonzini:
"Mostly the PPC part of the release, but also switching to Arnd's fix
for the hyperv config issue and a typo fix.
Main PPC changes:
- reimplement the MMIO instruction emulation
- transactional memory support for PR KVM
- improve radix page table handling"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (63 commits)
KVM: x86: VMX: redo fix for link error without CONFIG_HYPERV
KVM: x86: fix typo at kvm_arch_hardware_setup comment
KVM: PPC: Book3S PR: Fix failure status setting in tabort. emulation
KVM: PPC: Book3S PR: Enable use on POWER9 bare-metal hosts in HPT mode
KVM: PPC: Book3S PR: Don't let PAPR guest set MSR hypervisor bit
KVM: PPC: Book3S PR: Fix failure status setting in treclaim. emulation
KVM: PPC: Book3S PR: Fix MSR setting when delivering interrupts
KVM: PPC: Book3S PR: Handle additional interrupt types
KVM: PPC: Book3S PR: Enable kvmppc_get/set_one_reg_pr() for HTM registers
KVM: PPC: Book3S: Remove load/put vcpu for KVM_GET_REGS/KVM_SET_REGS
KVM: PPC: Remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl
KVM: PPC: Move vcpu_load/vcpu_put down to each ioctl case in kvm_arch_vcpu_ioctl
KVM: PPC: Book3S PR: Enable HTM for PR KVM for KVM_CHECK_EXTENSION ioctl
KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM
KVM: PPC: Book3S PR: Add guard code to prevent returning to guest with PR=0 and Transactional state
KVM: PPC: Book3S PR: Add emulation for tabort. in privileged state
KVM: PPC: Book3S PR: Add emulation for trechkpt.
KVM: PPC: Book3S PR: Add emulation for treclaim.
KVM: PPC: Book3S PR: Restore NV regs after emulating mfspr from TM SPRs
KVM: PPC: Book3S PR: Always fail transactions in guest privileged state
...
Linus Torvalds [Fri, 15 Jun 2018 21:35:02 +0000 (06:35 +0900)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin:
"virtio, vhost: features, fixes
- PCI virtual function support for virtio
- DMA barriers for virtio strong barriers
- bugfixes"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio: update the comments for transport features
virtio_pci: support enabling VFs
vhost: fix info leak due to uninitialized memory
virtio_ring: switch to dma_XX barriers for rpmsg
Mauro Carvalho Chehab [Thu, 14 Jun 2018 15:34:32 +0000 (12:34 -0300)]
fix a series of Documentation/ broken file name references
As files move around, their previous links break. Fix the
references for them.
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 15:33:06 +0000 (12:33 -0300)]
Documentation: rstFlatTable.py: fix a broken reference
The old HOWTO was removed a long time ago. The flat table
version is not metioned elsewhere, so just get rid of the
text.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 15:32:05 +0000 (12:32 -0300)]
ABI: sysfs-devices-system-cpu: remove a broken reference
This file doesn't exist anymore:
Documentation/cpu-freq/user-guide.txt
As the ABI already points to Documentation/cpu-freq, just
remove the broken link and the associated text.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 15:30:30 +0000 (12:30 -0300)]
devicetree: fix a series of wrong file references
As files got renamed, their references broke.
Manually fix a series of broken refs at the DT bindings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 15:24:41 +0000 (12:24 -0300)]
devicetree: fix name of pinctrl-bindings.txt
Rename:
pinctrl-binding.txt -> pinctrl-bindings.txt
In order to match the current name of this file.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 12:39:01 +0000 (09:39 -0300)]
devicetree: fix some bindings file names
There were some file movements that changed the location for
some DT bindings. Fix them with:
scripts/documentation-file-ref-check --fix
After manually checking if the new file makes sense.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 11:59:37 +0000 (08:59 -0300)]
MAINTAINERS: fix location of DT npcm files
The specified locations are not right. Fix the wildcard logic
to point to the correct directories.
Without that, get-maintainer won't get things right:
$ ./scripts/get_maintainer.pl --no-git-fallback --no-r --no-n --no-l -f Documentation/devicetree/bindings/arm/cpu-enable-method/nuvoton,npcm750-smp
robh+dt@kernel.org (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
mark.rutland@arm.com (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
After the patch, it will properly point to NPCM arch maintainers:
$ ./scripts/get_maintainer.pl --no-git-fallback --no-r --no-n --no-l -f Documentation/devicetree/bindings/arm/cpu-enable-method/nuvoton,npcm750-smp
avifishman70@gmail.com (supporter:ARM/NUVOTON NPCM ARCHITECTURE)
tmaimon77@gmail.com (supporter:ARM/NUVOTON NPCM ARCHITECTURE)
robh+dt@kernel.org (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
mark.rutland@arm.com (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS)
Cc: Avi Fishman <avifishman70@gmail.com>
Cc: Tomer Maimon <tmaimon77@gmail.com>
Cc: Patrick Venture <venture@google.com>
Cc: Nancy Yuen <yuenn@google.com>
Cc: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 11:01:00 +0000 (08:01 -0300)]
MAINTAINERS: fix location of some display DT bindings
Those files got a manufacturer's name prepended and were moved around.
Adjust their references accordingly.
Also, due those movements, Documentation/devicetree/bindings/video
doesn't exist anymore.
Cc: David Airlie <airlied@linux.ie>
Cc: David Lechner <david@lechnology.com>
Cc: Peter Senna Tschudin <peter.senna@collabora.com>
Cc: Martin Donnelly <martin.donnelly@ge.com>
Cc: Martyn Welch <martyn.welch@collabora.co.uk>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Alison Wang <alison.wang@nxp.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 10:43:07 +0000 (07:43 -0300)]
kernel-parameters.txt: fix pointers to sound parameters
The alsa parameters file was renamed to alsa-configuration.rst.
With regards to OSS, it got retired as a hole by at changeset
727dede0ba8a ("sound: Retire OSS"). So, it doesn't make sense
to keep mentioning it at kernel-parameters.txt.
Fixes: 727dede0ba8a ("sound: Retire OSS")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 10:18:45 +0000 (07:18 -0300)]
bindings: nvmem/zii: Fix location of nvmem.txt
The location pointed there is missing "bindings/" on its path.
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 8 May 2018 18:14:57 +0000 (15:14 -0300)]
docs: Fix more broken references
As we move stuff around, some doc references are broken. Fix some of
them via this script:
./scripts/documentation-file-ref-check --fix
Manually checked that produced results are valid.
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 14:06:08 +0000 (11:06 -0300)]
scripts/documentation-file-ref-check: check tools/*/Documentation
Some files, like tools/memory-model/README has references to
a Documentation file that is locale to it. Handle references
that are relative to them too.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 13:47:29 +0000 (10:47 -0300)]
scripts/documentation-file-ref-check: get rid of false-positives
Now that the number of broken refs are smaller, improve the logic
that gets rid of false-positives.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 13:14:54 +0000 (10:14 -0300)]
scripts/documentation-file-ref-check: hint: dash or underline
Sometimes, people use dash instead of underline or vice-versa.
Try to autocorrect it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 12:36:35 +0000 (09:36 -0300)]
scripts/documentation-file-ref-check: add a fix logic for DT
There are several links broken due to DT file movements. Add
a hint logic to seek for those changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 10:48:22 +0000 (07:48 -0300)]
scripts/documentation-file-ref-check: accept more wildcards at filenames
at MAINTAINERS, some filename paths use '?' and things like [7,9].
So, accept more wildcards, in order to avoid false-positives.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 10:11:02 +0000 (07:11 -0300)]
scripts/documentation-file-ref-check: fix help message
The name of the --fix option was renamed, but it was not
changed at the quick help message.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 14 Jun 2018 10:34:51 +0000 (07:34 -0300)]
media: max2175: fix location of driver's companion documentation
There's a missing ".rst" at the doc's file name.
Acked-by: Ramesh Shanmugasundaram <Ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 8 May 2018 22:41:44 +0000 (19:41 -0300)]
media: v4l: fix broken video4linux docs locations
There are several places pointing to old documentation files:
Documentation/video4linux/API.html
Documentation/video4linux/bttv/
Documentation/video4linux/cx2341x/fw-encoder-api.txt
Documentation/video4linux/m5602.txt
Documentation/video4linux/v4l2-framework.txt
Documentation/video4linux/videobuf
Documentation/video4linux/Zoran
Make them point to the new location where available, removing
otherwise.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 8 May 2018 21:29:30 +0000 (18:29 -0300)]
media: dvb: point to the location of the old README.dvb-usb file
This file got renamed, but the references still point to the
old place.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 8 May 2018 21:10:05 +0000 (18:10 -0300)]
media: dvb: fix location of get_dvb_firmware script
This script was moved out of Documentation/dvb, but the
links weren't updated.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 8 May 2018 18:14:57 +0000 (15:14 -0300)]
docs: Fix some broken references
As we move stuff around, some doc references are broken. Fix some of
them via this script:
./scripts/documentation-file-ref-check --fix
Manually checked if the produced result is valid, removing a few
false-positives.
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Coly Li <colyli@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 8 May 2018 21:54:36 +0000 (18:54 -0300)]
docs: fix broken references with multiple hints
The script:
./scripts/documentation-file-ref-check --fix
Gives multiple hints for broken references on some files.
Manually use the one that applies for some files.
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Jose Abreu [Fri, 15 Jun 2018 15:17:27 +0000 (16:17 +0100)]
net: stmmac: Run HWIF Quirks after getting HW caps
Currently we were running HWIF quirks before getting HW capabilities.
This is not right because some HWIF callbacks depend on HW caps.
Lets save the quirks callback and use it in a later stage.
This fixes Altera socfpga.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Fixes: 5f0456b43140 ("net: stmmac: Implement logic to automatically select HW Interface")
Reported-by: Dinh Nguyen <dinh.linux@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Dinh Nguyen <dinh.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roopa Prabhu [Wed, 13 Jun 2018 04:26:10 +0000 (21:26 -0700)]
neighbour: skip NTF_EXT_LEARNED entries during forced gc
Commit
9ce33e46531d ("neighbour: support for NTF_EXT_LEARNED flag")
added support for NTF_EXT_LEARNED for neighbour entries.
NTF_EXT_LEARNED entries are neigh entries managed by control
plane (eg: Ethernet VPN implementation in FRR routing suite).
Periodic gc already excludes these entries. This patch extends
it to forced gc which the earlier patch missed.
Fixes: 9ce33e46531d ("neighbour: support for NTF_EXT_LEARNED flag")
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zhouyang Jia [Fri, 15 Jun 2018 03:06:17 +0000 (11:06 +0800)]
net: cxgb3: add error handling for sysfs_create_group
When sysfs_create_group fails, the lack of error-handling code may
cause unexpected results.
This patch adds error-handling code after calling sysfs_create_group.
Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 15 Jun 2018 16:14:31 +0000 (09:14 -0700)]
Merge branch 'tls-fixes'
Daniel Borkmann says:
====================
Two tls fixes
First one is syzkaller trigered uaf and second one noticed
while writing test code with tls ulp. For details please see
individual patches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 15 Jun 2018 01:07:46 +0000 (03:07 +0200)]
tls: fix waitall behavior in tls_sw_recvmsg
Current behavior in tls_sw_recvmsg() is to wait for incoming tls
messages and copy up to exactly len bytes of data that the user
provided. This is problematic in the sense that i) if no packet
is currently queued in strparser we keep waiting until one has been
processed and pushed into tls receive layer for tls_wait_data() to
wake up and push the decrypted bits to user space. Given after
tls decryption, we're back at streaming data, use sock_rcvlowat()
hint from tcp socket instead. Retain current behavior with MSG_WAITALL
flag and otherwise use the hint target for breaking the loop and
returning to application. This is done if currently no ctx->recv_pkt
is ready, otherwise continue to process it from our strparser
backlog.
Fixes: c46234ebb4d1 ("tls: RX path for ktls")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 15 Jun 2018 01:07:45 +0000 (03:07 +0200)]
tls: fix use-after-free in tls_push_record
syzkaller managed to trigger a use-after-free in tls like the
following:
BUG: KASAN: use-after-free in tls_push_record.constprop.15+0x6a2/0x810 [tls]
Write of size 1 at addr
ffff88037aa08000 by task a.out/2317
CPU: 3 PID: 2317 Comm: a.out Not tainted 4.17.0+ #144
Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET47W (1.21 ) 11/28/2016
Call Trace:
dump_stack+0x71/0xab
print_address_description+0x6a/0x280
kasan_report+0x258/0x380
? tls_push_record.constprop.15+0x6a2/0x810 [tls]
tls_push_record.constprop.15+0x6a2/0x810 [tls]
tls_sw_push_pending_record+0x2e/0x40 [tls]
tls_sk_proto_close+0x3fe/0x710 [tls]
? tcp_check_oom+0x4c0/0x4c0
? tls_write_space+0x260/0x260 [tls]
? kmem_cache_free+0x88/0x1f0
inet_release+0xd6/0x1b0
__sock_release+0xc0/0x240
sock_close+0x11/0x20
__fput+0x22d/0x660
task_work_run+0x114/0x1a0
do_exit+0x71a/0x2780
? mm_update_next_owner+0x650/0x650
? handle_mm_fault+0x2f5/0x5f0
? __do_page_fault+0x44f/0xa50
? mm_fault_error+0x2d0/0x2d0
do_group_exit+0xde/0x300
__x64_sys_exit_group+0x3a/0x50
do_syscall_64+0x9a/0x300
? page_fault+0x8/0x30
entry_SYSCALL_64_after_hwframe+0x44/0xa9
This happened through fault injection where aead_req allocation in
tls_do_encryption() eventually failed and we returned -ENOMEM from
the function. Turns out that the use-after-free is triggered from
tls_sw_sendmsg() in the second tls_push_record(). The error then
triggers a jump to waiting for memory in sk_stream_wait_memory()
resp. returning immediately in case of MSG_DONTWAIT. What follows is
the trim_both_sgl(sk, orig_size), which drops elements from the sg
list added via tls_sw_sendmsg(). Now the use-after-free gets triggered
when the socket is being closed, where tls_sk_proto_close() callback
is invoked. The tls_complete_pending_work() will figure that there's
a pending closed tls record to be flushed and thus calls into the
tls_push_pending_closed_record() from there. ctx->push_pending_record()
is called from the latter, which is the tls_sw_push_pending_record()
from sw path. This again calls into tls_push_record(). And here the
tls_fill_prepend() will panic since the buffer address has been freed
earlier via trim_both_sgl(). One way to fix it is to move the aead
request allocation out of tls_do_encryption() early into tls_push_record().
This means we don't prep the tls header and advance state to the
TLS_PENDING_CLOSED_RECORD before allocation which could potentially
fail happened. That fixes the issue on my side.
Fixes: 3c4d7559159b ("tls: kernel TLS support")
Reported-by: syzbot+5c74af81c547738e1684@syzkaller.appspotmail.com
Reported-by: syzbot+709f2810a6a05f11d4d3@syzkaller.appspotmail.com
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>