niansa-misc/musl
1
0
Fork 0
mirror of git://git.musl-libc.org/musl synced 2025-03-06 20:48:29 +01:00
Code Issues Projects Releases Packages Wiki Activity

fix pthread_exit from cancellation handler

Browse source 
cancellation frames were not correctly popped, so this usage would not
only loop, but also reuse discarded and invalid parts of the stack.
This commit is contained in:
Rich Felker 2011-04-17 17:06:05 -04:00
parent 9080cc153c
commit 1ebde9c3a2
1 changed files with 5 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/thread/pthread_create.c
View file

@ -18,12 +18,13 @@ weak_alias(dummy_1, __pthread_tsd_run_dtors);
void __pthread_unwind_next(struct __ptcb *cb)
{
pthread_t self;
pthread_t self = pthread_self();
int n;
if (cb->__next) longjmp((void *)cb->__next->__jb, 1);
self = pthread_self();
if (cb->__next) {
self->cancelbuf = cb->__next->__next;
longjmp((void *)cb->__next->__jb, 1);
}
LOCK(&self->exitlock);
@ -104,7 +105,6 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
new->detached = attr->_a_detach;
new->attr = *attr;
new->unblock_cancel = self->cancel;
new->result = PTHREAD_CANCELED;
memcpy(new->tlsdesc, self->tlsdesc, sizeof new->tlsdesc);
new->tlsdesc[1] = (uintptr_t)new;
stack = (void *)((uintptr_t)new-1 & ~(uintptr_t)15);