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Date: Mon, 24 Jun 2013 12:00:12 -0400 From: Dave Jones <davej@...hat.com> To: Steven Rostedt <rostedt@...dmis.org> Cc: Oleg Nesterov <oleg@...hat.com>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, Linux Kernel <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, "Eric W. Biederman" <ebiederm@...ssion.com>, Andrey Vagin <avagin@...nvz.org> Subject: Re: frequent softlockups with 3.10rc6. On Mon, Jun 24, 2013 at 10:52:29AM -0400, Steven Rostedt wrote: > > > check_list_nodes corruption. next->prev should be prev (ffff88023b8a1a08), but was 00ffff88023b8a1a. (next=ffff880243288001). > > > > Can't find "check_list_nodes" in lib/list_debug.c or elsewhere... > > > > > [<ffffffff816e467d>] dump_stack+0x19/0x1b > > > [<ffffffff8104a0c1>] warn_slowpath_common+0x61/0x80 > > > [<ffffffff8104a12c>] warn_slowpath_fmt+0x4c/0x50 > > > [<ffffffff81112c61>] rb_head_page_deactivate.isra.39+0x61/0x80 > > > > How? rb_list_head_clear() just modifies list->next directly. > > > > > hopefully despite that it'll actually function as intended. > > > > Yes ;) > > I'm curious to what happened. Ah, this is the first victim of my new 'check sanity of nodes during list walks' patch. It's doing the same prev->next next->prev checking as list_add and friends. I'm looking at getting it into shape for a 3.12 merge after some other preparatory patches go into 3.11 Dave -- 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/
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