http://bugzilla.kernel.org/show_bug.cgi?id=15018 Summary: ext4 backtraces out of nowhere Product: File System Version: 2.5 Kernel Version: 2.6.33-rc3 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx ReportedBy: sgunderson@xxxxxxxxxxx Regression: No Hi, While doing an rsync to an ext4 filesystem, suddenly the above showed up in my dmesg: Jan 9 15:55:20 pannekake kernel: [61568.551238] Pid: 28573, comm: rsync Not tainted 2.6.33-rc3 #2 Jan 9 15:55:20 pannekake kernel: [61568.557085] Call Trace: Jan 9 15:55:20 pannekake kernel: [61568.559623] [<ffffffffa0253aa1>] ext4_write_inode+0x4d/0xc7 [ext4] Jan 9 15:55:20 pannekake kernel: [61568.566074] [<ffffffff810dabe7>] writeback_single_inode+0x125/0x2df Jan 9 15:55:20 pannekake kernel: [61568.572563] [<ffffffff810dae48>] write_inode_now+0x78/0xba Jan 9 15:55:20 pannekake kernel: [61568.578287] [<ffffffffa0255b2d>] ext4_da_get_block_prep+0x28b/0x36e [ext4] Jan 9 15:55:20 pannekake kernel: [61568.585367] [<ffffffff810e1b69>] __block_prepare_write+0x1f3/0x3c0 Jan 9 15:55:20 pannekake kernel: [61568.591792] [<ffffffffa02558a2>] ? ext4_da_get_block_prep+0x0/0x36e [ext4] Jan 9 15:55:20 pannekake kernel: [61568.598903] [<ffffffff810e1eb1>] block_write_begin+0x80/0xcf Jan 9 15:55:20 pannekake kernel: [61568.604840] [<ffffffffa02587be>] ext4_da_write_begin+0x196/0x218 [ext4] Jan 9 15:55:20 pannekake kernel: [61568.611683] [<ffffffffa02558a2>] ? ext4_da_get_block_prep+0x0/0x36e [ext4] Jan 9 15:55:20 pannekake kernel: [61568.618803] [<ffffffff810911c1>] ? iov_iter_copy_from_user_atomic+0x84/0xf6 Jan 9 15:55:20 pannekake kernel: [61568.626052] [<ffffffff8109133f>] generic_file_buffered_write+0x10c/0x230 Jan 9 15:55:20 pannekake kernel: [61568.632961] [<ffffffffa025375b>] ? ext4_dirty_inode+0x40/0x45 [ext4] Jan 9 15:55:20 pannekake kernel: [61568.639536] [<ffffffff81092b9c>] __generic_file_aio_write+0x347/0x37b Jan 9 15:55:20 pannekake kernel: [61568.646245] [<ffffffff81302709>] ? __mutex_lock_slowpath+0x22d/0x23c Jan 9 15:55:20 pannekake kernel: [61568.652819] [<ffffffff81092c2b>] generic_file_aio_write+0x5b/0xa2 Jan 9 15:55:20 pannekake kernel: [61568.659194] [<ffffffffa024fa93>] ext4_file_write+0x8e/0x97 [ext4] Jan 9 15:55:20 pannekake kernel: [61568.665577] [<ffffffff810bfbc8>] do_sync_write+0xc0/0x106 Jan 9 15:55:20 pannekake kernel: [61568.671195] [<ffffffff810cdb68>] ? poll_select_copy_remaining+0xc5/0xe9 Jan 9 15:55:20 pannekake kernel: [61568.678015] [<ffffffff81125b50>] ? security_file_permission+0x11/0x13 Jan 9 15:55:20 pannekake kernel: [61568.684678] [<ffffffff810c04df>] vfs_write+0xae/0x14a Jan 9 15:55:20 pannekake kernel: [61568.689954] [<ffffffff810c063f>] sys_write+0x47/0x6e Jan 9 15:55:20 pannekake kernel: [61568.695111] [<ffffffff81001feb>] system_call_fastpath+0x16/0x1b It showed up again ~20 minutes later, and since then I haven't seen it. I'm a bit puzzled since I don't actually see any error messages (just the backtrace), and I'm not able to find any ill effects except for the traceback, but I guess it still shouldn't happen. FWIW, the ext4 is on an LVM whose one of the component RAID-5s was resyncing at the time. I don't know if that is relevant or not. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
