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
| ||
|
Date: Wed, 18 Jan 2012 09:01:00 +0800 From: Shaohua Li <shaohua.li@...el.com> To: Vivek Goyal <vgoyal@...hat.com> Cc: Tejun Heo <tj@...nel.org>, linux kernel mailing list <linux-kernel@...r.kernel.org>, Jens Axboe <axboe@...nel.dk> Subject: Re: Kernel crash in icq_free_icq_rcu 2012/1/18 Vivek Goyal <vgoyal@...hat.com>: > On Tue, Jan 17, 2012 at 01:48:34PM -0800, Tejun Heo wrote: >> On Tue, Jan 17, 2012 at 03:18:23PM -0500, Vivek Goyal wrote: >> > Hi Tejun, >> > >> > With latest linus kernel, I see following crash. I was running some >> > scripts which create cgroups and launch fio jobs in those groups. In >> > a separate window I wrote a script to change the IO scheduler on the >> > device in a loop while IO was happening on the device. After few >> > seconds I see following. So far I tried it twice and reproduced it >> > both the times in first few seconds. >> >> Does the following patch make any difference? > > Nope. Still can reproduce the issue. I had similar issue too. Looks ioc_create_icq finds an icq (in ioc_lookup_icq) the icq is in rcu free (it has __rcu_icq_cache set) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists