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| author |   deraadt <deraadt@openbsd.org> | 2018-02-10 22:59:02 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 2018-02-10 22:59:02 +0000 |
| commit | 3b1a36d13b63d1ba75e94744d20b1a2b8fcec6e9 (patch) | |
| tree | ab15f1673c22df7ab96f8b3fb95621721a8a0f7a /lib/librthread/rthread_stack.c | |
| parent | Enable axppmic(4). (diff) | |
| download | wireguard-openbsd-3b1a36d13b63d1ba75e94744d20b1a2b8fcec6e9.tar.xz wireguard-openbsd-3b1a36d13b63d1ba75e94744d20b1a2b8fcec6e9.zip | |
Shift top-of-stack down so that the random==0 case doesn't leave stack
pointer beyond the space.
ok stefan, tedu
Diffstat (limited to 'lib/librthread/rthread_stack.c')
| -rw-r--r-- | lib/librthread/rthread_stack.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/librthread/rthread_stack.c b/lib/librthread/rthread_stack.c index f40ca006c86..73c13e8478d 100644 --- a/lib/librthread/rthread_stack.c +++ b/lib/librthread/rthread_stack.c @@ -1,4 +1,4 @@ -/* $OpenBSD: rthread_stack.c,v 1.17 2017/09/05 02:40:54 guenther Exp $ */ +/* $OpenBSD: rthread_stack.c,v 1.18 2018/02/10 22:59:02 deraadt Exp $ */ /* PUBLIC DOMAIN: No Rights Reserved. Marco S Hyman <marc@snafu.org> */ @@ -65,7 +65,7 @@ _rthread_alloc_stack(pthread_t thread) #ifdef MACHINE_STACK_GROWS_UP stack->sp = base + rnd; #else - stack->sp = base + thread->attr.stack_size - rnd; + stack->sp = base + thread->attr.stack_size - (_STACKALIGNBYTES+1) - rnd; #endif /* * This impossible guardsize marks this stack as @@ -103,7 +103,7 @@ _rthread_alloc_stack(pthread_t thread) stack->sp = base + rnd; #else guard = base; - stack->sp = base + size - rnd; + stack->sp = base + size - (_STACKALIGNBYTES+1) - rnd; #endif /* memory protect the guard region */ |