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| author | Josef Bacik <jbacik@fb.com> | 2017-12-15 21:42:57 -0500 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2017-12-17 20:47:32 +0100 |
| commit | 46df3d209db080395a98fc0875bd05e45e8f44e0 (patch) | |
| tree | f9a0fcd0e875ddaa5bf6317a2937d568e8417d07 /net/ipv4/tcp_ipv4.c | |
| parent | 4a29c0db69e58b20cd7a2efce997627c6b376244 (diff) | |
| download | blackbird-op-linux-46df3d209db080395a98fc0875bd05e45e8f44e0.tar.gz blackbird-op-linux-46df3d209db080395a98fc0875bd05e45e8f44e0.zip | |
trace: reenable preemption if we modify the ip
Things got moved around between the original bpf_override_return patches
and the final version, and now the ftrace kprobe dispatcher assumes if
you modified the ip that you also enabled preemption. Make a comment of
this and enable preemption, this fixes the lockdep splat that happened
when using this feature.
Fixes: 9802d86585db ("bpf: add a bpf_override_function helper")
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
0 files changed, 0 insertions, 0 deletions
