netdev - Re: Kernel 4.1.12 crash

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <564FA904.7020603@gmail.com>
Date:	Fri, 20 Nov 2015 15:13:08 -0800
From:	Alexander Duyck <alexander.duyck@...il.com>
To:	Andrew <nitr0@...i.kr.ua>, netdev@...r.kernel.org
Subject: Re: Kernel 4.1.12 crash

On 11/20/2015 05:58 AM, Andrew wrote:
> Hi all.
>
> Today some BRASes on 4.1.12 kernel were crashed.
>
> Here's crash traces: http://pastebin.com/p68hNS8R
> http://pastebin.com/36ieRAM2 http://pastebin.com/3BRTVEB6
>
> On 3.2 kernel same hardware works OK, troubles were noticed after kernel
> upgrade.
>
> What additional info is needed?

Looking over the traces there seem to be two areas called out.

The first is the fib_trie resize BUG_ON that was triggered due to the 
parent and child not being associated.  I think that might be due to 
memory corruption as I cannot find any spots where we are resizing 
without correctly setting up the parent-child relationship of the nodes 
first.

The other spot that is showing up is ppp_shutdown_interface and it's 
related path.  It looks like there are a couple of patches you could try 
back-porting to see if it resolves the issue.  If they do then perhaps 
they should be considered candidates for stable:

8cb775bc0a3 ("ppp: fix device unregistration upon netns deletion")
58a89ecaca5 ("ppp: fix lockdep splat in ppp_dev_uninit()")

- Alex
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html