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authorEric W. Biederman <ebiederm@xmission.com>2021-11-15 11:55:57 -0600
committerEric W. Biederman <ebiederm@xmission.com>2021-11-17 10:30:28 -0600
commite7f7c99ba911f56bc338845c1cd72954ba591707 (patch)
tree47003d63b966b2d66a7a13b16651ac74be80e7c2 /tools/perf/scripts/python/export-to-postgresql.py
parentLinux 5.16-rc1 (diff)
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signal: In get_signal test for signal_group_exit every time through the loop
Recently while investigating a problem with rr and signals I noticed that siglock is dropped in ptrace_signal and get_signal does not jump to relock. Looking farther to see if the problem is anywhere else I see that do_signal_stop also returns if signal_group_exit is true. I believe that test can now never be true, but it is a bit hard to trace through and be certain. Testing signal_group_exit is not expensive, so move the test for signal_group_exit into the for loop inside of get_signal to ensure the test is never skipped improperly. This has been a potential problem since I added the test for signal_group_exit was added. Fixes: 35634ffa1751 ("signal: Always notice exiting tasks") Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lkml.kernel.org/r/875yssekcd.fsf_-_@email.froward.int.ebiederm.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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