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Date: Mon, 26 Aug 2013 17:42:44 -0400 From: Dave Jones <davej@...hat.com> To: Cyrill Gorcunov <gorcunov@...il.com> Cc: Hillf Danton <dhillf@...il.com>, Linux-MM <linux-mm@...ck.org>, Linux Kernel <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: unused swap offset / bad page map. On Tue, Aug 27, 2013 at 01:37:54AM +0400, Cyrill Gorcunov wrote: > On Tue, Aug 27, 2013 at 12:42:03AM +0400, Cyrill Gorcunov wrote: > > On Mon, Aug 26, 2013 at 04:37:02PM -0400, Dave Jones wrote: > > > > > > Try adding the -C64 to the invocation in scripts/test-multi.sh, > > > and perhaps up'ing the NR_PROCESSES variable there too. > > > > Thanks! I'll ping you if I manage to crash my instance. > > So trinity tained kernel, but definitely not in place I'm interested. > > [ 320.904506] raw_sendmsg: trinity-child14 forgot to set AF_INET. Fix it! > [ 329.570812] ------------[ cut here ]------------ > [ 329.571650] WARNING: CPU: 0 PID: 1982 at kernel/lockdep.c:3552 check_flags+0x18a/0x1c1() > [ 329.571650] DEBUG_LOCKS_WARN_ON(current->softirqs_enabled) > [ 329.571650] Modules linked in: > [ 329.571650] CPU: 0 PID: 1982 Comm: trinity-child4 Not tainted 3.11.0-rc6-dirty #386 > [ 329.571650] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 > [ 329.571650] 0000000000000009 ffff88001ee03b10 ffffffff8157ac8a 0000000000000006 > [ 329.571650] ffff88001ee03b60 ffff88001ee03b50 ffffffff81045bb2 ffffffff81583840 > [ 329.571650] ffffffff81092620 ffff880002b48000 0000000000000046 ffffffff81a2f750 > [ 329.571650] Call Trace: > [ 329.571650] <IRQ> [<ffffffff8157ac8a>] dump_stack+0x4f/0x84 > [ 329.571650] [<ffffffff81045bb2>] warn_slowpath_common+0x81/0x9b > [ 329.571650] [<ffffffff81583840>] ? ftrace_call+0x5/0x2f > [ 329.571650] [<ffffffff81092620>] ? check_flags+0x18a/0x1c1 > [ 329.571650] [<ffffffff81045c6f>] warn_slowpath_fmt+0x46/0x48 > [ 329.571650] [<ffffffff81045c2e>] ? warn_slowpath_fmt+0x5/0x48 > [ 329.571650] [<ffffffff81092620>] check_flags+0x18a/0x1c1 > [ 329.571650] [<ffffffff81093595>] lock_is_held+0x30/0x5f > [ 329.571650] [<ffffffff810eb19e>] rcu_read_lock_held+0x36/0x38 > [ 329.571650] [<ffffffff810f1b92>] perf_tp_event+0x92/0x220 > [ 329.571650] [<ffffffff810f1d0e>] ? perf_tp_event+0x20e/0x220 > [ 329.571650] [<ffffffff81049f6c>] ? __local_bh_enable+0x9a/0x9e > [ 329.571650] [<ffffffff810712f3>] ? get_parent_ip+0x3f/0x3f > [ 329.571650] [<ffffffff81049f6c>] ? __local_bh_enable+0x9a/0x9e > [ 329.571650] [<ffffffff810e3af1>] perf_ftrace_function_call+0xce/0xdc when it rains, it pours.. > (since my config pretty similar to yours I tried to run trinity without > kernel recompilation. At first i loaded swap space with crap data > > [root@ovz trinity]# free > total used free shared buffers cached > Mem: 493228 480188 13040 0 2912 12112 > -/+ buffers/cache: 465164 28064 > Swap: 2063356 1741304 322052 > > then run it as > > [root@ovz trinity]# ./trinity -C64 --dangerous) Yeah, for reproducing this bug, I'd stick to running it as a user, without --dangerous. you might still hit a few fairly-easy to trigger warn-on/printks. I run with this applied: http://paste.fedoraproject.org/34960/55323613/raw/ to make things a little less noisy. 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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