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: Thu, 26 May 2011 11:48:28 +0200 From: Peter Zijlstra <a.p.zijlstra@...llo.nl> To: Laurent Riffard <laurent.riffard@...e.fr> Cc: netdev@...r.kernel.org Subject: Re: [BUG] netconsole broken by scheduler updates On Thu, 2011-05-26 at 11:21 +0200, Laurent Riffard wrote: > Hi, > > Recently, netconsole was broken by some scheduler updates. Kernel hangs > on boot near the network card initialization. I noticed that it does > hang just where a "inconsistent lock state" message normally appears. > > I did a bisection : e4a52bcb9a18142d79e231b6733cabdbf2e67c1f is the > first bad commit. > commit e4a52bcb9a18142d79e231b6733cabdbf2e67c1f > Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> > Date: Tue Apr 5 17:23:54 2011 +0200 > > sched: Remove rq->lock from the first half of ttwu() > > > Before this commit, kernel was booting succesfully despite the > "inconsistent lock state" message. After this commit, the kernel does > hang on boot, I have to push the reset button. Do you have CONFIG_HARDLOCKUP_DETECTOR=y, and do you get an NMI splat after some 10 seconds? It would be interesting to see where its stuck. Also, are you very _very_ sure that lockdep message is a false positive? -- 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
Powered by blists - more mailing lists