Subject: + pidns-fix-free_pid-to-handle-the-first-fork-failure.patch added to -mm tree
To: oleg@xxxxxxxxxx,ebiederm@xxxxxxxxxxxx,serge@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 19 Sep 2013 16:21:15 -0700
The patch titled
Subject: pidns: fix free_pid() to handle the first fork failure
has been added to the -mm tree. Its filename is
pidns-fix-free_pid-to-handle-the-first-fork-failure.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/pidns-fix-free_pid-to-handle-the-first-fork-failure.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/pidns-fix-free_pid-to-handle-the-first-fork-failure.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: pidns: fix free_pid() to handle the first fork failure
"case 0" in free_pid() assumes that disable_pid_allocation() should clear
PIDNS_HASH_ADDING before the last pid goes away. However this doesn't
happen if the 1st fork() fails to create the child reaper which should
call disable_pid_allocation().
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: "Serge E. Hallyn" <serge@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/pid.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN kernel/pid.c~pidns-fix-free_pid-to-handle-the-first-fork-failure kernel/pid.c
--- a/kernel/pid.c~pidns-fix-free_pid-to-handle-the-first-fork-failure
+++ a/kernel/pid.c
@@ -273,6 +273,11 @@ void free_pid(struct pid *pid)
*/
wake_up_process(ns->child_reaper);
break;
+ case PIDNS_HASH_ADDING:
+ /* Handle a fork failure of the first process */
+ WARN_ON(ns->child_reaper);
+ ns->nr_hashed = 0;
+ /* fall through */
case 0:
schedule_work(&ns->proc_work);
break;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
anon_inodefs-forbid-open-via-proc.patch
autofs4-allow-autofs-to-work-outside-the-initial-pid-namespace.patch
autofs4-translate-pids-to-the-right-namespace-for-the-daemon.patch
pidns-fix-free_pid-to-handle-the-first-fork-failure.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
