3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Silesh C V <svella...@mvista.com>
commit aed8adb7688d5744cb484226820163af31d2499a upstream.
Commit 079148b919d0 ("coredump: factor out the setting of PF_DUMPCORE")
cleaned up the setting of PF_DUMPCORE by removing it from all the
linux_binfmt->core_dump() and moving it to zap_threads().But this ended
up clearing all the previously set flags. This causes issues during
core generation when tsk->flags is checked again (eg. for PF_USED_MATH
to dump floating point registers). Fix this.
Signed-off-by: Silesh C V <svella...@mvista.com>
Acked-by: Oleg Nesterov <o...@redhat.com>
Cc: Mandeep Singh Baines <m...@chromium.org>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
fs/coredump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -299,7 +299,7 @@ static int zap_threads(struct task_struc
if (unlikely(nr < 0))
return nr;
- tsk->flags = PF_DUMPCORE;
+ tsk->flags |= PF_DUMPCORE;
if (atomic_read(&mm->mm_users) == nr + 1)
goto done;
/*
--
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