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| author |   Jiri Olsa <jolsa@kernel.org> | 2022-11-16 11:02:27 +0100 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2022-11-21 11:52:01 -0800 |
| commit | 2b506f20af2b9dcfb3cb2d19e4c804eb20565841 (patch) | |
| tree | 07ef2a0ec05ce688dc9f59f9089af43f29e7fcc6 /MAINTAINERS | |
| parent | Merge branch 'Bug fix and test case for special map value field ' (diff) | |
| download | wireguard-linux-2b506f20af2b9dcfb3cb2d19e4c804eb20565841.tar.xz wireguard-linux-2b506f20af2b9dcfb3cb2d19e4c804eb20565841.zip | |
selftests/bpf: Filter out default_idle from kprobe_multi bench
Alexei hit following rcu warning when running prog_test -j.
[ 128.049567] WARNING: suspicious RCU usage
[ 128.049569] 6.1.0-rc2 #912 Tainted: G O
...
[ 128.050944] kprobe_multi_link_handler+0x6c/0x1d0
[ 128.050947] ? kprobe_multi_link_handler+0x42/0x1d0
[ 128.050950] ? __cpuidle_text_start+0x8/0x8
[ 128.050952] ? __cpuidle_text_start+0x8/0x8
[ 128.050958] fprobe_handler.part.1+0xac/0x150
[ 128.050964] 0xffffffffa02130c8
[ 128.050991] ? default_idle+0x5/0x20
[ 128.050998] default_idle+0x5/0x20
It's caused by bench test attaching kprobe_multi link to default_idle
function, which is not executed in rcu safe context so the kprobe
handler on top of it will trigger the rcu warning.
Filtering out default_idle function from the bench test.
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20221116100228.2064612-1-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions