From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Subject: Re: found a scenario for BUG at fs/ext4/super.c:804! Date: Sat, 01 Jun 2013 15:48:26 +0200 Message-ID: <51A9FBAA.2050906@gmx.de> References: <51A79353.7030604@gmx.de> <51A7951C.5020300@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE To: linux-ext4@vger.kernel.org Return-path: Received: from mout.gmx.net ([212.227.15.15]:65067 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751976Ab3FANsa (ORCPT ); Sat, 1 Jun 2013 09:48:30 -0400 Received: from mailout-de.gmx.net ([10.1.76.19]) by mrigmx.server.lan (mrigmx002) with ESMTP (Nemesis) id 0LcmCH-1U1yxP1v7P-00k9yA for ; Sat, 01 Jun 2013 15:48:28 +0200 In-Reply-To: <51A7951C.5020300@gmx.de> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 05/30/2013 08:06 PM, Toralf F=C3=B6rster wrote: > On 05/30/2013 07:58 PM, Toralf F=C3=B6rster wrote: >> 11. if that attempt fails stop the nfs service and run the umount co= mmand again - it segfaults now >=20 > forgot to mention that after that just sysrq+b thelps me to reboot th= e > machine, a "sync" does not come back nor can be interrupted with Ctrl= -C, > "reboot" don't work too - OTOH I'm able to write an email and save it= as > a draft. >=20 sysrq+w gave : 2013-06-01T15:30:25.825+02:00 n22 kernel: SysRq : Show Blocked State 2013-06-01T15:30:25.825+02:00 n22 kernel: task PC stack = pid father 2013-06-01T15:30:25.825+02:00 n22 kernel: kworker/0:1 D f08f7db0 = 0 29 2 0x00000000 2013-06-01T15:30:25.825+02:00 n22 kernel: Workqueue: events do_sync_wor= k 2013-06-01T15:30:25.825+02:00 n22 kernel: f22b9e88 00000046 00000000 f0= 8f7db0 00000008 e7a9080b 00000a16 f22b9e34 2013-06-01T15:30:25.825+02:00 n22 kernel: c16b1400 c104ec08 c16b1400 f3= 7ba400 f21b8d50 ef1a39b0 00000296 b9b6e892 2013-06-01T15:30:25.825+02:00 n22 kernel: f22b9eb0 7fffffff f22b9eac f2= 2b9e78 c14803f3 f21b8d50 00000001 f21b8d50 2013-06-01T15:30:25.825+02:00 n22 kernel: Call Trace: 2013-06-01T15:30:25.825+02:00 n22 kernel: [] ? try_to_grab_pe= nding+0x98/0x130 2013-06-01T15:30:25.825+02:00 n22 kernel: [] ? wait_for_compl= etion+0x83/0xc0 2013-06-01T15:30:25.826+02:00 n22 kernel: [] ? try_to_wake_up= +0x220/0x220 2013-06-01T15:30:25.826+02:00 n22 kernel: [] schedule+0x23/0x= 60 2013-06-01T15:30:25.826+02:00 n22 kernel: [] rwsem_down_read_= failed+0x75/0xb2 2013-06-01T15:30:25.826+02:00 n22 kernel: [] call_rwsem_down_= read_failed+0x7/0xc 2013-06-01T15:30:25.826+02:00 n22 kernel: [] ? down_read+0x1c= /0x1f 2013-06-01T15:30:25.826+02:00 n22 kernel: [] iterate_supers+0= x62/0xc0 2013-06-01T15:30:25.826+02:00 n22 kernel: [] ? fdatawrite_one= _bdev+0x20/0x20 2013-06-01T15:30:25.826+02:00 n22 kernel: [] do_sync_work+0x2= 2/0x80 2013-06-01T15:30:25.826+02:00 n22 kernel: [] process_one_work= +0x10e/0x390 2013-06-01T15:30:25.826+02:00 n22 kernel: [] worker_thread+0x= 102/0x320 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? manage_workers= =2Eisra.24+0x290/0x290 2013-06-01T15:30:25.827+02:00 n22 kernel: [] kthread+0x94/0xa= 0 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ret_from_kernel_= thread+0x1b/0x28 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? flush_kthread_= worker+0x90/0x90 2013-06-01T15:30:25.827+02:00 n22 kernel: sync D f08f7db0 = 0 27190 27033 0x00000000 2013-06-01T15:30:25.827+02:00 n22 kernel: ef57ff38 00000082 00000000 f0= 8f7db0 00000008 c7f4f883 00000a15 ef57fee4 2013-06-01T15:30:25.827+02:00 n22 kernel: c16b1400 c104ec08 c16b1400 f3= 7c7400 eeed4fe0 ef1a39b0 00000296 2a2f912a 2013-06-01T15:30:25.827+02:00 n22 kernel: ef57ff60 7fffffff ef57ff5c ef= 57ff28 c14803f3 eeed4fe0 00000001 eeed4fe0 2013-06-01T15:30:25.827+02:00 n22 kernel: Call Trace: 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? try_to_grab_pe= nding+0x98/0x130 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? wait_for_compl= etion+0x83/0xc0 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? try_to_wake_up= +0x220/0x220 2013-06-01T15:30:25.827+02:00 n22 kernel: [] schedule+0x23/0x= 60 2013-06-01T15:30:25.827+02:00 n22 kernel: [] rwsem_down_read_= failed+0x75/0xb2 2013-06-01T15:30:25.827+02:00 n22 kernel: [] call_rwsem_down_= read_failed+0x7/0xc 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? down_read+0x1c= /0x1f 2013-06-01T15:30:25.827+02:00 n22 kernel: [] iterate_supers+0= x62/0xc0 2013-06-01T15:30:25.827+02:00 n22 kernel: [] ? fdatawrite_one= _bdev+0x20/0x20 2013-06-01T15:30:25.827+02:00 n22 kernel: [] sys_sync+0x31/0x= 80 2013-06-01T15:30:25.827+02:00 n22 kernel: [] sysenter_do_call= +0x12/0x22 2013-06-01T15:30:25.828+02:00 n22 kernel: kworker/0:0 D f08f7db0 = 0 27191 2 0x00000000 2013-06-01T15:30:25.828+02:00 n22 kernel: Workqueue: events do_sync_wor= k 2013-06-01T15:30:25.828+02:00 n22 kernel: ea5e9e88 00000046 00000000 f0= 8f7db0 00000008 42845398 00000a17 eeed0336 2013-06-01T15:30:25.828+02:00 n22 kernel: c16b1400 c104ec08 c16b1400 f3= 7ba400 eeed4290 eeed0000 00000296 c1535c4d 2013-06-01T15:30:25.828+02:00 n22 kernel: ea5e9eb0 7fffffff ea5e9eac ea= 5e9e78 c14803f3 eeed4290 00000001 eeed4290 2013-06-01T15:30:25.828+02:00 n22 kernel: Call Trace: 2013-06-01T15:30:25.828+02:00 n22 kernel: [] ? try_to_grab_pe= nding+0x98/0x130 2013-06-01T15:30:25.828+02:00 n22 kernel: [] ? wait_for_compl= etion+0x83/0xc0 2013-06-01T15:30:25.828+02:00 n22 kernel: [] ? try_to_wake_up= +0x220/0x220 2013-06-01T15:30:25.828+02:00 n22 kernel: [] schedule+0x23/0x= 60 2013-06-01T15:30:25.829+02:00 n22 kernel: [] rwsem_down_read_= failed+0x75/0xb2 2013-06-01T15:30:25.829+02:00 n22 kernel: [] call_rwsem_down_= read_failed+0x7/0xc 2013-06-01T15:30:25.829+02:00 n22 kernel: [] ? down_read+0x1c= /0x1f 2013-06-01T15:30:25.829+02:00 n22 kernel: [] iterate_supers+0= x62/0xc0 2013-06-01T15:30:25.829+02:00 n22 kernel: [] ? fdatawrite_one= _bdev+0x20/0x20 2013-06-01T15:30:25.829+02:00 n22 kernel: [] do_sync_work+0x2= 2/0x80 2013-06-01T15:30:25.829+02:00 n22 kernel: [] process_one_work= +0x10e/0x390 2013-06-01T15:30:25.829+02:00 n22 kernel: [] worker_thread+0x= 102/0x320 2013-06-01T15:30:25.829+02:00 n22 kernel: [] ? manage_workers= =2Eisra.24+0x290/0x290 2013-06-01T15:30:25.829+02:00 n22 kernel: [] kthread+0x94/0xa= 0 2013-06-01T15:30:25.829+02:00 n22 kernel: [] ret_from_kernel_= thread+0x1b/0x28 2013-06-01T15:30:25.829+02:00 n22 kernel: [] ? flush_kthread_= worker+0x90/0x90 2013-06-01T15:30:58.399+02:00 n22 kernel: SysRq : Emergency Sync --=20 MfG/Sincerely Toralf F=C3=B6rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html