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Date: Wed, 28 Oct 2009 02:14:19 +0100 (CET) From: Jiri Kosina <jkosina@...e.cz> To: Pavel Machek <pavel@....cz> Cc: kernel list <linux-kernel@...r.kernel.org>, Jens Axboe <jens.axboe@...cle.com> Subject: Re: 2.6.32-rc5: surprise removal of USB mass storage, and whole system goes to hell On Tue, 27 Oct 2009, Pavel Machek wrote: > I did remove one harddrive w/o unmounting, and now the whole system > becomes unusable :-(: (whole dmesg attached). > > Stuff like "sync" hangs, and I'll probably have to reboot soon. >From the traces it seems that it might be related to the new per-bdi writeback stuff ... adding Jens to CC. > usb 1-1:1.0: uevent > usb-storage 1-1:1.0: usb_probe_interface > usb-storage 1-1:1.0: usb_probe_interface - got id > scsi18 : SCSI emulation for USB Mass Storage devices > usb-storage: device found at 18 > usb-storage: waiting for device to settle before scanning > drivers/usb/core/inode.c: creating file '018' > scsi 18:0:0:0: Direct-Access HTS54106 0G9SA00 PQ: 0 ANSI: 2 CCS > sd 18:0:0:0: [sdc] 117210240 512-byte logical blocks: (60.0 GB/55.8 GiB) > sd 18:0:0:0: [sdc] Write Protect is off > sd 18:0:0:0: [sdc] Mode Sense: 3c 00 00 00 > sd 18:0:0:0: [sdc] Assuming drive cache: write through > sd 18:0:0:0: Attached scsi generic sg1 type 0 > sd 18:0:0:0: [sdc] Assuming drive cache: write through > sdc: sdc1 sdc2 sdc4 > usb-storage: device scan complete > sd 18:0:0:0: [sdc] Assuming drive cache: write through > sd 18:0:0:0: [sdc] Attached SCSI disk > usb 1-1:1.0: uevent > usb 1-1: uevent > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > kjournald starting. Commit interval 5 seconds > EXT3 FS on sdc2, internal journal > EXT3-fs: mounted filesystem with ordered data mode. > EXT3-fs error (device sdb2): ext3_find_entry: reading directory #2 offset 0 > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > EXT3-fs error (device sdb2): ext3_find_entry: reading directory #2 offset 0 > ------------[ cut here ]------------ > WARNING: at fs/buffer.c:1159 mark_buffer_dirty+0x80/0xa0() > Hardware name: 17097HU > Modules linked in: > Pid: 2110, comm: sh Not tainted 2.6.32-rc5-00154-gfbad3ad-dirty #83 > Call Trace: > [<c0791da9>] ? printk+0x18/0x1a > [<c02b9110>] ? mark_buffer_dirty+0x80/0xa0 > [<c023113c>] warn_slowpath_common+0x6c/0xc0 > [<c02b9110>] ? mark_buffer_dirty+0x80/0xa0 > [<c02311a5>] warn_slowpath_null+0x15/0x20 > [<c02b9110>] mark_buffer_dirty+0x80/0xa0 > [<c02eeed4>] ext3_commit_super+0x44/0x80 > [<c02f01c8>] ext3_handle_error+0x48/0xb0 > [<c0791da9>] ? printk+0x18/0x1a > [<c02f02f1>] ext3_error+0x51/0x60 > [<c02ece2d>] ext3_find_entry+0x5ad/0x6d0 > [<c02a96b4>] ? d_alloc+0x114/0x190 > [<c02ed73d>] ext3_lookup+0x3d/0x100 > [<c02a96d8>] ? d_alloc+0x138/0x190 > [<c029faf9>] do_lookup+0x199/0x1c0 > [<c02a12ed>] __link_path_walk+0x31d/0xd70 > [<c02a1f34>] path_walk+0x54/0xb0 > [<c02a2081>] do_path_lookup+0x51/0x60 > [<c02a2b1a>] user_path_at+0x4a/0x80 > [<c029b045>] vfs_fstatat+0x35/0x70 > [<c029b15b>] vfs_stat+0x1b/0x20 > [<c029b174>] sys_stat64+0x14/0x30 > [<c0255dc3>] ? lockdep_sys_exit+0x23/0x80 > [<c0202e5c>] ? sysenter_do_call+0x1e/0x31 > [<c0202e50>] sysenter_do_call+0x12/0x31 > ---[ end trace 4eaf1068b9a2a4ba ]--- > EXT3-fs error (device sdb2): ext3_readdir: directory #2 contains a hole at offset 0 > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task umount:21522 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > umount D c8469eb4 0 21522 24889 0x00000000 > c8469ec8 00000046 00000002 c8469eb4 c2c01d64 00000000 c8469e6c c8469e7c > 508b0602 00013840 00000000 00000003 00000000 db18ac40 c0ad2d64 cd044680 > cd044908 c2c050c0 00000000 051c883d 00000046 cd044680 db18ac40 c8469eac > Call Trace: > [<c07946fe>] ? rwsem_down_failed_common+0x2e/0x190 > [<c0794775>] rwsem_down_failed_common+0xa5/0x190 > [<c079487d>] rwsem_down_write_failed+0x1d/0x30 > [<c07948fe>] call_rwsem_down_write_failed+0x6/0x8 > [<c0793f67>] ? down_write+0x47/0x50 > [<c029a082>] ? deactivate_super+0x42/0x60 > [<c029a082>] deactivate_super+0x42/0x60 > [<c02ae1b8>] mntput_no_expire+0x98/0xc0 > [<c02ae49f>] sys_umount+0x4f/0x2e0 > [<c02ae749>] sys_oldumount+0x19/0x20 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task sync:21224 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > sync D e527dec8 0 21224 21221 0x00000000 > e527dedc 00000046 00000002 e527dec8 c2c01d64 00000000 c0224f96 00000000 > c14dbaa0 0001379f c2e050d0 0001379f c14dd6fc c2e05118 c0ad2d64 f61f3680 > f61f3908 c2c050c0 00000000 0519e6c9 00000000 00000001 00000001 00000000 > Call Trace: > [<c0224f96>] ? select_task_rq_fair+0x46/0x7e0 > [<c02b31b8>] bdi_sched_wait+0x8/0x10 > [<c07931e7>] __wait_on_bit+0x47/0x70 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c07932b8>] out_of_line_wait_on_bit+0xa8/0xc0 > [<c02b31b0>] ? bdi_sched_wait+0x0/0x10 > [<c0245820>] ? wake_bit_function+0x0/0x60 > [<c02b3222>] sync_inodes_sb+0x62/0x130 > [<c02b7250>] __sync_filesystem+0x20/0x60 > [<c02b7375>] sync_filesystems+0xe5/0x120 > [<c02b73fb>] sys_sync+0x1b/0x40 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > INFO: task umount:21522 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > umount D c8469eb4 0 21522 24889 0x00000000 > c8469ec8 00000046 00000002 c8469eb4 c2c01d64 00000000 c8469e6c c8469e7c > 508b0602 00013840 00000000 00000003 00000000 db18ac40 c0ad2d64 cd044680 > cd044908 c2c050c0 00000000 051c883d 00000046 cd044680 db18ac40 c8469eac > Call Trace: > [<c07946fe>] ? rwsem_down_failed_common+0x2e/0x190 > [<c0794775>] rwsem_down_failed_common+0xa5/0x190 > [<c079487d>] rwsem_down_write_failed+0x1d/0x30 > [<c07948fe>] call_rwsem_down_write_failed+0x6/0x8 > [<c0793f67>] ? down_write+0x47/0x50 > [<c029a082>] ? deactivate_super+0x42/0x60 > [<c029a082>] deactivate_super+0x42/0x60 > [<c02ae1b8>] mntput_no_expire+0x98/0xc0 > [<c02ae49f>] sys_umount+0x4f/0x2e0 > [<c02ae749>] sys_oldumount+0x19/0x20 > [<c0202e50>] sysenter_do_call+0x12/0x31 > INFO: lockdep is turned off. > > Pavel > -- Jiri Kosina SUSE Labs, Novell Inc. -- 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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