Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758118Ab1DMTFF (ORCPT ); Wed, 13 Apr 2011 15:05:05 -0400 Received: from mail.candelatech.com ([208.74.158.172]:41199 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757109Ab1DMTFC (ORCPT ); Wed, 13 Apr 2011 15:05:02 -0400 Message-ID: <4DA5F3BA.3060404@candelatech.com> Date: Wed, 13 Apr 2011 12:04:26 -0700 From: Ben Greear Organization: Candela Technologies User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-2.fc11 Thunderbird/3.0.4 MIME-Version: 1.0 To: Linux Kernel Mailing List CC: Tejun Heo , Andrew Morton Subject: Re: WARNING at libata-core.c:5015 in 2.6.39-rc3-wl+, then lockup. References: <4DA5CF81.4070908@candelatech.com> <4DA5D5D8.8070301@candelatech.com> In-Reply-To: <4DA5D5D8.8070301@candelatech.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4285 Lines: 99 On 04/13/2011 09:56 AM, Ben Greear wrote: > On 04/13/2011 09:29 AM, Ben Greear wrote: >> This on an multi-core Atom based appliance. Using SSD for hard-drive. >> Fedora 14 OS. >> >> 2.6.39-rc* has been very flaky for me on this system (haven't tried other >> machines yet), and I'm pretty sure I saw similar bugs on earlier 39-rc >> kernels though >> they often crashed on other things as well... > > I found someone else reporting this bug against -rc1, and folks > requested lspci -nn. It's included below. This is from a different > boot, but appears to be the same bug. System didn't lock hard right away, > but crashed shortly after I gathered this info. And, same warning in latest linux-2.6 (no extra patches, from a few minutes ago). System worked for a bit, then this splat: [root@lec2010-ath9k-1 ~]# INFO: task readahead:259 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. readahead D 00000002 0 259 1 0x00000000 f4511cf8 00000046 21ede952 00000002 c0b17600 f466a940 c0b17600 c0b17600 f466abb4 c0b17600 001a27c1 00000000 f457fb80 00000002 f466a940 f466a940 f466a940 00000000 00000006 f4511ccc b25a0d89 f4511cd0 c045935d f45cff94 Call Trace: [] ? timekeeping_get_ns+0x16/0x52 [] ? ktime_get_ts+0x98/0xa2 [] io_schedule+0x72/0xab [] sleep_on_buffer+0xd/0x11 [] __wait_on_bit_lock+0x39/0x75 [] ? unmap_underlying_metadata+0x51/0x51 [] ? unmap_underlying_metadata+0x51/0x51 [] out_of_line_wait_on_bit_lock+0xa0/0xa8 [] ? autoremove_wake_function+0x34/0x34 [] __lock_buffer+0x24/0x27 [] lock_buffer+0x33/0x36 [] __ext4_get_inode_loc+0x120/0x34e [] ? _raw_spin_unlock+0x22/0x25 [] ? iget_locked+0xdb/0x101 [] ext4_iget+0x57/0x6a8 [] ext4_lookup+0x66/0xb8 [] d_alloc_and_lookup+0x3d/0x54 [] walk_component+0x138/0x2b7 [] ? link_path_walk+0x8a/0x394 [] do_last+0xfd/0x502 [] path_openat+0x9b/0x28a [] ? lock_release_non_nested+0x86/0x1d8 [] ? might_fault+0x4c/0x86 [] do_filp_open+0x3d/0x62 [] ? _raw_spin_unlock+0x22/0x25 [] ? alloc_fd+0x137/0x144 [] do_sys_open+0x59/0xd8 [] sys_open+0x23/0x2b [] sysenter_do_call+0x12/0x38 1 lock held by readahead/259: #0: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [] walk_component+0x117/0x2b7 INFO: task gnome-session:1522 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. gnome-session D 00000000 0 1522 1342 0x00000000 f206ddf0 00200046 00001bcf 00000000 c0b17600 f2054830 c0b17600 c0b17600 f2054aa4 c0b17600 af6ef63b 0000000a 00000000 0000000a f2054830 f53935e8 00000000 f206ddc0 c0461849 00200246 f2054830 f2054830 00000000 00000006 Call Trace: [] ? mark_lock+0x1e/0x1de [] ? mark_held_locks+0x47/0x5f [] ? __mutex_lock_common+0x1ca/0x2e8 [] ? trace_hardirqs_on_caller+0x10e/0x12f [] __mutex_lock_common+0x1d8/0x2e8 [] mutex_lock_nested+0x35/0x3d [] ? walk_component+0x117/0x2b7 [] walk_component+0x117/0x2b7 [] ? link_path_walk+0x8a/0x394 [] do_last+0xfd/0x502 [] path_openat+0x9b/0x28a [] ? lock_release_non_nested+0x86/0x1d8 [] ? might_fault+0x4c/0x86 [] do_filp_open+0x3d/0x62 [] ? _raw_spin_unlock+0x22/0x25 [] ? alloc_fd+0x137/0x144 [] do_sys_open+0x59/0xd8 [] sys_open+0x23/0x2b [] sysenter_do_call+0x12/0x38 1 lock held by gnome-session/1522: #0: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [] walk_component+0x117/0x2b7 Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/