linux-kernel - [ 093/105] freezer: exec should clear PF_NOFREEZE along with PF

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Message-Id: <20121028231605.897184835@decadent.org.uk>
Date:	Sun, 28 Oct 2012 23:17:09 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Oleg Nesterov <oleg@...hat.com>, Tejun Heo <tj@...nel.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: [ 093/105] freezer: exec should clear PF_NOFREEZE along with PF_KTHREAD

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Oleg Nesterov <oleg@...hat.com>

commit b40a79591ca918e7b91b0d9b6abd5d00f2e88c19 upstream.

flush_old_exec() clears PF_KTHREAD but forgets about PF_NOFREEZE.

Signed-off-by: Oleg Nesterov <oleg@...hat.com>
Acked-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
[bwh: Backported to 3.2: PF_FORKNOEXEC is cleared elsewhere]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/exec.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1095,7 +1095,7 @@ int flush_old_exec(struct linux_binprm *
 	bprm->mm = NULL;		/* We're using it now */
 
 	set_fs(USER_DS);
-	current->flags &= ~(PF_RANDOMIZE | PF_KTHREAD);
+	current->flags &= ~(PF_RANDOMIZE | PF_KTHREAD | PF_NOFREEZE);
 	flush_thread();
 	current->personality &= ~bprm->per_clear;
 


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