From: Alexei Starovoitov <ast@kernel.org>
Date: Fri, 17 Mar 2023 05:20:09 +0000 (-0700)
Subject: Merge branch 'double-fix bpf_test_run + XDP_PASS recycling'
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=94bbbdfbde165820e4078ffe9a78305d556dec35;p=linux.git

Merge branch 'double-fix bpf_test_run + XDP_PASS recycling'

Alexander Lobakin says:

====================

Enabling skb PP recycling revealed a couple issues in the bpf_test_run
code. Recycling broke the assumption that the headroom won't ever be
touched during the test_run execution: xdp_scrub_frame() invalidates the
XDP frame at the headroom start, while neigh xmit code overwrites 2 bytes
to the left of the Ethernet header. The first makes the kernel panic in
certain cases, while the second breaks xdp_do_redirect selftest on BE.
test_run is a limited-scope entity, so let's hope no more corner cases
will happen here or at least they will be as easy and pleasant to fix
as those two.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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94bbbdfbde165820e4078ffe9a78305d556dec35