linux-kernel - Re: Lockup in tracepoint unregister in sched switch ftrace plugin

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 for Android: free password hash cracker in your pocket

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

Message-ID: <alpine.DEB.1.10.0810210901560.23042@gandalf.stny.rr.com>
Date:	Tue, 21 Oct 2008 09:03:35 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Lockup in tracepoint unregister in sched switch ftrace plugin


On Tue, 21 Oct 2008, Ingo Molnar wrote:
> > 
> > Note, I just booted this kernel with CONFIG_NOHZ=n and it booted fine. 
> > This looks like a bug somewhere in tracepoints/RCU/dynamic-ticks
> 
> does it work with fb02fbc14 reverted? (see the reverter patch below or 
> try tip/master)

Yes! With this revert (I applied your patch) it now boots with 
CONFIG_NO_HZ=y.

(now I go look to see why preemptoff failed its selftest)

-- Steve

--
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/