From: Markus Trippelsdorf Subject: Re: [Kernel BUG] ext4 for v2.6.32 round II Date: Thu, 1 Oct 2009 03:41:28 +0200 Message-ID: <20091001014128.GA2092@phenom2.trippelsdorf.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Linus Torvalds , linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org To: Theodore Ts'o Return-path: Received: from smtp-out-042.synserver.de ([212.40.180.42]:1062 "HELO smtp-out-042.synserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755344AbZJABlb (ORCPT ); Wed, 30 Sep 2009 21:41:31 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Sep 30, 2009 at 01:25:31AM -0400, Theodore Ts'o wrote: > > Please pull from: > > git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git for_linus > > to grab the following changes for v2.6.32. > > > Curt Wohlgemuth (2): > ext4: Make sure ext4_dirty_inode() updates the inode in no journal mode > ext4: Handle nested ext4_journal_start/stop calls without a journal > > Frank Mayhar (1): > ext4: Avoid updating the inode table bh twice in no journal mode > > Jan Kara (1): > ext4: Update documentation about quota mount options > > Josh Stone (1): > ext4: Add a stub for mpage_da_data in the trace header > > Mingming Cao (4): > ext4: release reserved quota when block reservation for delalloc retry > ext4: Split uninitialized extents for direct I/O > ext4: Use end_io callback to avoid direct I/O fallback to buffered I/O > ext4: async direct IO for holes and fallocate support > > Theodore Ts'o (8): > ext4: Use ext4_msg() for ext4_da_writepage() errors > ext4: Fix hueristic which avoids group preallocation for closed files > ext4: Adjust ext4_da_writepages() to write out larger contiguous chunks > ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first > ext4, jbd2: Drop unneeded printks at mount and unmount time > ext4: Use tracepoints for mb_history trace file > jbd2: Use tracepoints for history file > ext4: Fix time encoding with extra epoch bits Running latest git I get the following kernel BUG message: ------------[ cut here ]------------ Kernel BUG at ffffffff810efa89 [verbose debug info unavailable] invalid opcode: 0000 [#1] SMP last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq CPU 3 Pid: 1930, comm: flush-8:16 Not tainted 2.6.32-rc2-00134-g84d88d5 #4 System Product Name RIP: 0010:[] [] ext4_num_dirty_pages+0x113/0x213 RSP: 0018:ffff88011e7d7a80 EFLAGS: 00010246 RAX: 4000000000020039 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffea00030497e8 RSI: 0000000000000002 RDI: ffffea000300ad60 RBP: ffff88011e7d7b80 R08: ffffea000300ad68 R09: 0000000000000003 R10: 000000000000000e R11: 0000000000000000 R12: 0000000000000000 R13: ffff88011e7d7ac0 R14: ffff8800df4acee0 R15: ffff88011e7d7b48 FS: 00007eff036f26f0(0000) GS:ffff880028380000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00007f24c4fa0000 CR3: 000000011e68d000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process flush-8:16 (pid: 1930, threadinfo ffff88011e7d6000, task ffff88011ca2abe0) Stack: ffffffff810f174e ffff88011e5808e0 ffffea00030497e8 0000000000008000 <0> ffff88011e7d7ad0 0000000e00000286 ffff88011e7d7ad0 0000000000000000 <0> 000000000000000e 0000000000000000 ffffea00030497e8 ffffea00030497b0 Call Trace: [] ? __mpage_da_writepage+0x0/0x14e [] ext4_da_writepages+0x135/0x48f [] ? find_busiest_group+0x3ea/0x950 [] do_writepages+0x1c/0x25 [] writeback_single_inode+0xea/0x2e3 [] writeback_inodes_wb+0x443/0x520 [] wb_writeback+0x123/0x1a1 [] wb_do_writeback+0x137/0x14d [] bdi_writeback_task+0x2b/0x84 [] ? bdi_start_fn+0x0/0xcd [] bdi_start_fn+0x6c/0xcd [] ? bdi_start_fn+0x0/0xcd [] kthread+0x7a/0x82 [] child_rip+0xa/0x20 [] ? kthread+0x0/0x82 [] ? child_rip+0x0/0x20 Code: 72 18 75 15 48 8b 02 a8 10 74 0e f6 c4 20 75 09 48 8b 4a 20 48 39 d9 74 0d 48 89 d7 e8 3b ea f8 ff 48 89 d9 eb 5b f6 c4 08 75 04 <0f> 0b eb fe 48 8b 72 10 48 89 f0 48 8b 38 f7 c7 00 02 00 00 75 RIP [] ext4_num_dirty_pages+0x113/0x213 RSP ---[ end trace 8a998a2f9968ef87 ]--- or ------------[ cut here ]------------ Kernel BUG at ffffffff810efa89 [verbose debug info unavailable] invalid opcode: 0000 [#1] SMP last sysfs file: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:16/ATK0110:00/hwmon/hwmon0/temp2_input CPU 1 Pid: 1916, comm: flush-8:16 Not tainted 2.6.32-rc2-00134-g84d88d5 #4 System Product Name RIP: 0010:[] [] ext4_num_dirty_pages+0x113/0x213 RSP: 0018:ffff88011cf61a80 EFLAGS: 00010246 RAX: 4000000000020039 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffea000301bc30 RSI: 0000000000000002 RDI: ffffea000301c058 RBP: ffff88011cf61b80 R08: ffffea000301c060 R09: 0000000000000003 R10: 000000000000000e R11: 0000000000000000 R12: 0000000000000000 R13: ffff88011cf61ac0 R14: ffff8800df4339f0 R15: ffff88011cf61b48 FS: 00007f04ceb40910(0000) GS:ffff880028280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00007f04ce33f000 CR3: 000000011bb91000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process flush-8:16 (pid: 1916, threadinfo ffff88011cf60000, task ffff88011e6f2be0) Stack: 0000000100000001 00000000007745d5 ffffea000301bc30 0000000000008000 <0> ffff88011cf61ad0 0000000e03efe400 ffff88011cf61ad0 0000000000000000 <0> 000000000000000e 0000000000000000 ffffea000301bc30 ffffea000301bca0 Call Trace: [] ext4_da_writepages+0x135/0x48f [] do_writepages+0x1c/0x25 [] writeback_single_inode+0xea/0x2e3 [] writeback_inodes_wb+0x443/0x520 [] wb_writeback+0x123/0x1a1 [] wb_do_writeback+0x137/0x14d [] bdi_writeback_task+0x2b/0x84 [] ? bdi_start_fn+0x0/0xcd [] bdi_start_fn+0x6c/0xcd [] ? bdi_start_fn+0x0/0xcd [] kthread+0x7a/0x82 [] child_rip+0xa/0x20 [] ? kthread+0x0/0x82 [] ? child_rip+0x0/0x20 Code: 72 18 75 15 48 8b 02 a8 10 74 0e f6 c4 20 75 09 48 8b 4a 20 48 39 d9 74 0d 48 89 d7 e8 3b ea f8 ff 48 89 d9 eb 5b f6 c4 08 75 04 <0f> 0b eb fe 48 8b 72 10 48 89 f0 48 8b 38 f7 c7 00 02 00 00 75 RIP [] ext4_num_dirty_pages+0x113/0x213 RSP ---[ end trace 534f3a080f2b5f80 ]--- I haven't bisected yet, but maybe it is obvious to someone what went wrong. -- Markus