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38 lines
1.4 KiB
38 lines
1.4 KiB
2 years ago
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commit 06865865151579d1aa17d38110060a68b85c5d90
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Author: Stafford Horne <shorne@gmail.com>
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Date: Sat Sep 25 17:02:06 2021 +0900
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pthread/tst-cancel28: Fix barrier re-init race condition
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When running this test on the OpenRISC port I am working on this test
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fails with a timeout. The test passes when being straced or debugged.
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Looking at the code there seems to be a race condition in that:
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1 main thread: calls xpthread_cancel
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2 sub thread : receives cancel signal
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3 sub thread : cleanup routine waits on barrier
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4 main thread: re-inits barrier
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5 main thread: waits on barrier
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After getting to 5 the main thread and sub thread wait forever as the 2
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barriers are no longer the same.
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Removing the barrier re-init seems to fix this issue. Also, the barrier
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does not need to be reinitialized as that is done by default.
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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(cherry picked from commit 9874ca536b1d0662b1cea46af3ce09a4d42aeb32)
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diff --git a/sysdeps/pthread/tst-cancel28.c b/sysdeps/pthread/tst-cancel28.c
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index 627cbc8160191c5c..9286c159b3be5e8a 100644
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--- a/sysdeps/pthread/tst-cancel28.c
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+++ b/sysdeps/pthread/tst-cancel28.c
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@@ -69,7 +69,6 @@ do_test (void)
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xpthread_cancel (timer_thread);
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- xpthread_barrier_init (&barrier, NULL, 2);
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xpthread_barrier_wait (&barrier);
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return 0;
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