diff options
Diffstat (limited to 'executor/common.h')
| -rw-r--r-- | executor/common.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/executor/common.h b/executor/common.h index 6f11ef058..61600a712 100644 --- a/executor/common.h +++ b/executor/common.h @@ -241,9 +241,22 @@ static void thread_start(void* (*fn)(void*), void* arg) pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); - if (pthread_create(&th, &attr, fn, arg)) - exitf("pthread_create failed"); - pthread_attr_destroy(&attr); + int i; + // Clone can fail spuriously with EAGAIN if there is a concurrent execve in progress. + // (see linux kernel commit 498052bba55ec). But it can also be a true limit imposed by cgroups. + // In one case we want to retry infinitely, in another -- fail immidiately... + for (i = 0; i < 100; i++) { + if (pthread_create(&th, &attr, fn, arg) == 0) { + pthread_attr_destroy(&attr); + return; + } + if (errno == EAGAIN) { + usleep(50); + continue; + } + break; + } + exitf("pthread_create failed"); } #endif |