From: Oleg Nesterov <oleg@tv-sign.ru>
To: Janak Desai <janak@us.ibm.com>, Andrew Morton <akpm@osdl.org>,
torvalds@osdl.org
Cc: ebiederm@xmission.com, linux-kernel@vger.kernel.org,
viro@ftp.linux.org.uk, hch@lst.de, mtk-manpages@gmx.net,
ak@muc.de, paulus@samba.org
Subject: [PATCH] for 2.6.16, disable unshare_vm()
Date: Sat, 18 Mar 2006 20:41:10 +0300 [thread overview]
Message-ID: <441C4636.15F57F6@tv-sign.ru> (raw)
In-Reply-To: 441C4263.B779CDA8@tv-sign.ru
sys_unshare() does mmput(new_mm). This is not enough
if we have mm->core_waiters. This patch is a temporary
fix for soon to be released 2.6.16.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
--- MM/kernel/fork.c~ 2006-03-18 23:15:13.000000000 +0300
+++ MM/kernel/fork.c 2006-03-18 23:15:56.000000000 +0300
@@ -1512,9 +1512,7 @@ static int unshare_vm(unsigned long unsh
if ((unshare_flags & CLONE_VM) &&
(mm && atomic_read(&mm->mm_users) > 1)) {
- *new_mmp = dup_mm(current);
- if (!*new_mmp)
- return -ENOMEM;
+ return -EINVAL;
}
return 0;
next prev parent reply other threads:[~2006-03-18 17:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-16 16:49 [PATCH] unshare: Cleanup up the sys_unshare interface before we are committed Eric W. Biederman
2006-03-16 17:31 ` [PATCH] unshare: Use rcu_assign_pointer when setting sighand Eric W. Biederman
2006-03-17 6:48 ` Paul E. McKenney
2006-03-17 17:44 ` Oleg Nesterov
2006-03-17 20:56 ` Andrew Morton
2006-03-18 13:12 ` Oleg Nesterov
2006-03-18 15:43 ` Janak Desai
2006-03-18 17:24 ` Oleg Nesterov
2006-03-18 17:41 ` Oleg Nesterov [this message]
2006-03-18 18:10 ` [PATCH] for 2.6.16, disable unshare_vm() Linus Torvalds
2006-03-18 18:29 ` Ulrich Drepper
2006-03-18 18:48 ` Janak Desai
2016-03-14 13:15 ` unshare(CLONE_VM) Re: [PATCH] unshare: Use rcu_assign_pointer when setting sighand Julian Smith
2016-03-14 18:35 ` Linus Torvalds
2006-03-18 13:13 ` [PATCH] implement unshare(CLONE_SIGHAND) for single-thread case Oleg Nesterov
2006-03-18 15:10 ` [PATCH] unshare: Error if passed unsupported flags Eric W. Biederman
2006-03-18 15:33 ` Janak Desai
2006-03-18 16:29 ` [PATCH] unshare: Use rcu_assign_pointer when setting sighand Janak Desai
2006-03-16 19:40 ` [PATCH] unshare: Cleanup up the sys_unshare interface before we are committed Michael Kerrisk
2006-03-16 20:33 ` Andrew Morton
2006-03-16 20:41 ` Linus Torvalds
2006-03-16 21:58 ` Eric W. Biederman
2006-03-16 22:19 ` Andrew Morton
2006-03-16 21:36 ` Janak Desai
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