From: Dave Jones <davej@codemonkey.org.uk>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Linux Kernel <linux-kernel@vger.kernel.org>,
syzkaller-bugs@googlegroups.com,
Gargi Sharma <gs051095@gmail.com>,
Oleg Nesterov <oleg@redhat.com>, Rik van Riel <riel@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: proc_flush_task oops
Date: Thu, 21 Dec 2017 17:00:44 -0500 [thread overview]
Message-ID: <20171221220044.GA4977@codemonkey.org.uk> (raw)
In-Reply-To: <CACVxJT_Sud7tNv23yOOqG7Uh5zFPDnz1anS7pTr0ChpCSMvZDA@mail.gmail.com>
On Thu, Dec 21, 2017 at 12:38:12PM +0200, Alexey Dobriyan wrote:
> > with proc_mnt still set to NULL is a mystery to me.
> >
> > Is there any chance the idr code doesn't always return the lowest valid
> > free number? So init gets assigned something other than 1?
>
> Well, this theory is easy to test (attached).
I didn't hit this BUG, but I hit the same oops in proc_flush_task.
Dave
next prev parent reply other threads:[~2017-12-21 22:00 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-18 21:44 proc_flush_task oops Dave Jones
2017-12-18 22:15 ` Al Viro
2017-12-18 23:10 ` Dave Jones
2017-12-18 23:50 ` Linus Torvalds
2017-12-19 1:22 ` Dave Jones
2017-12-19 3:39 ` Dave Jones
2017-12-19 10:49 ` Tetsuo Handa
2017-12-19 18:25 ` Eric W. Biederman
2017-12-19 18:27 ` Eric W. Biederman
2017-12-19 19:30 ` Dave Jones
2017-12-19 21:44 ` Eric W. Biederman
2017-12-20 1:54 ` Eric W. Biederman
2017-12-20 5:28 ` Dave Jones
2017-12-20 18:25 ` Eric W. Biederman
2017-12-21 3:16 ` Dave Jones
2017-12-21 8:26 ` Eric W. Biederman
2017-12-21 10:38 ` Alexey Dobriyan
2017-12-21 14:25 ` Dave Jones
2017-12-21 16:41 ` Eric W. Biederman
2017-12-21 22:00 ` Dave Jones [this message]
2017-12-22 1:31 ` Eric W. Biederman
2017-12-22 3:35 ` Dave Jones
2017-12-22 7:58 ` Eric W. Biederman
2017-12-22 10:13 ` Alexey Dobriyan
2017-12-22 14:41 ` Eric W. Biederman
2017-12-22 16:11 ` [TEST PATCH] pid: fix allocating pid 2 for init (was Re: proc_flush_task oops) Alexey Dobriyan
2017-12-24 3:12 ` Eric W. Biederman
2017-12-24 3:16 ` [PATCH] pid: Handle failure to allocate the first pid in a pid namespace Eric W. Biederman
2017-12-20 8:00 ` proc_flush_task oops Dmitry Vyukov
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