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race condition fix: block all signals before decrementing thread count
[musl]
/
src
/
thread
/
pthread_create.c
diff --git
a/src/thread/pthread_create.c
b/src/thread/pthread_create.c
index
b6c475d
..
c73c521
100644
(file)
--- a/
src/thread/pthread_create.c
+++ b/
src/thread/pthread_create.c
@@
-10,9
+10,6
@@
void __pthread_unwind_next(struct __ptcb *cb)
self = pthread_self();
if (self->cancel) self->result = PTHREAD_CANCELLED;
self = pthread_self();
if (self->cancel) self->result = PTHREAD_CANCELLED;
- if (!a_fetch_add(&libc.threads_minus_1, -1))
- exit(0);
-
LOCK(&self->exitlock);
not_finished = self->tsd_used;
LOCK(&self->exitlock);
not_finished = self->tsd_used;
@@
-28,6
+25,11
@@
void __pthread_unwind_next(struct __ptcb *cb)
}
}
}
}
+ syscall4(__NR_sigprocmask, SIG_BLOCK, (long)(uint64_t[1]){-1}, 0, 8);
+
+ if (!a_fetch_add(&libc.threads_minus_1, -1))
+ exit(0);
+
if (self->detached && self->map_base)
__unmapself(self->map_base, self->map_size);
if (self->detached && self->map_base)
__unmapself(self->map_base, self->map_size);