diff options
Diffstat (limited to 'nptl/pthread_getattr_np.c')
| -rw-r--r-- | nptl/pthread_getattr_np.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/nptl/pthread_getattr_np.c b/nptl/pthread_getattr_np.c index 75d717bb1f..7309185d14 100644 --- a/nptl/pthread_getattr_np.c +++ b/nptl/pthread_getattr_np.c @@ -120,8 +120,15 @@ pthread_getattr_np (thread_id, attr) && (uintptr_t) __libc_stack_end < to) { /* Found the entry. Now we have the info we need. */ - iattr->stacksize = rl.rlim_cur; iattr->stackaddr = stack_end; + iattr->stacksize = + rl.rlim_cur - (size_t) (to - (uintptr_t) stack_end); + + /* Cut it down to align it to page size since otherwise we + risk going beyond rlimit when the kernel rounds up the + stack extension request. */ + iattr->stacksize = (iattr->stacksize + & -(intptr_t) GLRO(dl_pagesize)); /* The limit might be too high. */ if ((size_t) iattr->stacksize |