From: Rich Felker <dalias@aerifal.cx>
Date: Fri, 10 Apr 2015 07:47:42 +0000 (-0400)
Subject: apply vmlock wait to __unmapself in pthread_exit
X-Git-Tag: v1.1.9~84
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=a2d3053354432f3e3b5a787c1527d4b414e9acb0;p=oweals%2Fmusl.git

apply vmlock wait to __unmapself in pthread_exit
---

diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 08c5f4f8..33808ce5 100644
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -108,6 +108,10 @@ _Noreturn void __pthread_exit(void *result)
 		if (self->robust_list.off)
 			__syscall(SYS_set_robust_list, 0, 3*sizeof(long));
 
+		/* Since __unmapself bypasses the normal munmap code path,
+		 * explicitly wait for vmlock holders first. */
+		__vm_wait();
+
 		/* The following call unmaps the thread's stack mapping
 		 * and then exits without touching the stack. */
 		__unmapself(self->map_base, self->map_size);