3.15-stable review patch. If anyone has any objections, please let me know.
------------------ From: Silesh C V <[email protected]> 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 <[email protected]> Acked-by: Oleg Nesterov <[email protected]> Cc: Mandeep Singh Baines <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/coredump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/coredump.c +++ b/fs/coredump.c @@ -306,7 +306,7 @@ 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; /* -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
