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Date: Fri, 8 Aug 2014 13:39:54 -0700 From: Kamal Mostafa <kamal@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Silesh C V <svellattu@...sta.com>, Mandeep Singh Baines <msb@...omium.org>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Kamal Mostafa <kamal@...onical.com> Subject: [PATCH 3.13 171/259] coredump: fix the setting of PF_DUMPCORE 3.13.11.6 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Silesh C V <svellattu@...sta.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 <svellattu@...sta.com> Acked-by: Oleg Nesterov <oleg@...hat.com> Cc: Mandeep Singh Baines <msb@...omium.org> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org> Signed-off-by: Kamal Mostafa <kamal@...onical.com> --- fs/coredump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/coredump.c b/fs/coredump.c index fab2568..59009ac 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -307,7 +307,7 @@ static int zap_threads(struct task_struct *tsk, struct mm_struct *mm, if (unlikely(nr < 0)) return nr; - tsk->flags = PF_DUMPCORE; + tsk->flags |= PF_DUMPCORE; if (atomic_read(&mm->mm_users) == nr + 1) goto done; /* -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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