From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 14497] New: system blocked on "sync" command issued.
Date: Wed, 28 Oct 2009 03:28:30 GMT
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Summary: system blocked on "sync" command issued.
Product: File System
Version: 2.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: ext4
AssignedTo: fs_ext4@kernel-bugs.osdl.org
ReportedBy: htmldeveloper@gmail.com
Regression: Yes
Seemed like ext4 FS error has resulted in the harddisk not being able to be
mounted properly second time round.
First I plugged in the thumbdrive and then followed by the USB harddisk:
usb 2-1: new high speed USB device using ehci_hcd and address 2
usb 2-1: New USB device found, idVendor=0930, idProduct=6545
usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-1: Product: TransMemory
usb 2-1: Manufacturer: TOSHIBA
usb 2-1: SerialNumber: 5B84080000C8
usb 2-1: configuration #1 chosen from 1 choice
Initializing USB Mass Storage driver...
scsi2 : SCSI emulation for USB Mass Storage devices
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
scsi 2:0:0:0: Direct-Access TOSHIBA TransMemory PMAP PQ: 0 ANSI: 0
CCS
sd 2:0:0:0: Attached scsi generic sg2 type 0
sd 2:0:0:0: [sdb] 7823360 512-byte logical blocks: (4.00 GB/3.73 GiB)
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] Mode Sense: 23 00 00 00
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sdb: sdb1
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sd 2:0:0:0: [sdb] Attached SCSI removable disk
usb 2-2: new high speed USB device using ehci_hcd and address 3
usb 2-2: New USB device found, idVendor=0d49, idProduct=7350
usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-2: Product: OneTouch
usb 2-2: Manufacturer: Maxtor
usb 2-2: SerialNumber: 2HAPXD2T
usb 2-2: configuration #1 chosen from 1 choice
scsi3 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
scsi 3:0:0:0: Direct-Access Maxtor OneTouch 0125 PQ: 0 ANSI: 4
sd 3:0:0:0: Attached scsi generic sg3 type 0
sd 3:0:0:0: [sdc] 625142448 512-byte logical blocks: (320 GB/298 GiB)
sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 2d 08 00 00
sd 3:0:0:0: [sdc] Assuming drive cache: write through
sd 3:0:0:0: [sdc] Assuming drive cache: write through
sdc: sdc1 sdc2 sdc3 sdc4 < sdc5 sdc6 >
sd 3:0:0:0: [sdc] Assuming drive cache: write through
sd 3:0:0:0: [sdc] Attached SCSI disk
kjournald starting. Commit interval 5 seconds
EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
EXT3 FS on sdc2, internal journal
EXT3-fs: mounted filesystem with writeback data mode.
kjournald starting. Commit interval 5 seconds
EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
EXT3 FS on sdc1, internal journal
EXT3-fs: mounted filesystem with writeback data mode.
EXT4-fs (sdc5): warning: maximal mount count reached, running e2fsck is
recommended
EXT4-fs (sdc5): mounted filesystem with ordered data mode
kjournald starting. Commit interval 5 seconds
EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
EXT3 FS on sdc3, internal journal
EXT3-fs: mounted filesystem with writeback data mode.
usb 2-2: USB disconnect, address 3
JBD2: I/O error detected when updating journal superblock for sdc5-8.
EXT4-fs (sdc5): previous I/O error to superblock detected
usb 2-2: new high speed USB device using ehci_hcd and address 4
usb 2-2: New USB device found, idVendor=0d49, idProduct=7350
usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-2: Product: OneTouch
usb 2-2: Manufacturer: Maxtor
usb 2-2: SerialNumber: 2HAPXD2T
usb 2-2: configuration #1 chosen from 1 choice
scsi4 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 4
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
scsi 4:0:0:0: Direct-Access Maxtor OneTouch 0125 PQ: 0 ANSI: 4
sd 4:0:0:0: Attached scsi generic sg3 type 0
sd 4:0:0:0: [sdd] 625142448 512-byte logical blocks: (320 GB/298 GiB)
sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 2d 08 00 00
sd 4:0:0:0: [sdd] Assuming drive cache: write through
sd 4:0:0:0: [sdd] Assuming drive cache: write through
sdd: sdd1 sdd2 sdd3 sdd4 < sdd5 sdd6 >
sd 4:0:0:0: [sdd] Assuming drive cache: write through
sd 4:0:0:0: [sdd] Attached SCSI disk
INFO: task umount:6076 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
umount D ffff880001c97340 0 6076 6071 0x00000080
ffff8800986e9be8 0000000000000082 ffff8800986e9b58 ffffffff810538f5
ffff8800986e9c38 0000000000010f08 ffff8800986e9fd8 0000000000017340
ffff8800986e9fd8 0000000000017340 ffff8800a87a2e40 ffff8800bbfdae40
Call Trace:
[] ? update_curr+0xd8/0x164
[] ? default_spin_lock_flags+0x1c/0x36
[] bdi_sched_wait+0x21/0x39
[] __wait_on_bit+0x5b/0xa3
[] ? bdi_sched_wait+0x0/0x39
[] ? bdi_sched_wait+0x0/0x39
[] out_of_line_wait_on_bit+0x7e/0x9f
[] ? wake_bit_function+0x0/0x56
[] wait_on_bit+0x2d/0x49
[] sync_inodes_sb+0x8d/0x183
[] __sync_filesystem+0x5f/0xa0
[] sync_filesystem+0x5a/0x77
[] generic_shutdown_super+0x3a/0x107
[] kill_block_super+0x3a/0x68
[] deactivate_super+0x82/0xb2
[] mntput_no_expire+0xdc/0x12f
[] ? dput+0x58/0x174
[] sys_umount+0x2d6/0x31b
[] system_call_fastpath+0x16/0x1b
INFO: task umount:6076 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
umount D ffff880001c97340 0 6076 6071 0x00000080
ffff8800986e9be8 0000000000000082 ffff8800986e9b58 ffffffff810538f5
ffff8800986e9c38 0000000000010f08 ffff8800986e9fd8 0000000000017340
ffff8800986e9fd8 0000000000017340 ffff8800a87a2e40 ffff8800bbfdae40
Call Trace:
[] ? update_curr+0xd8/0x164
[] ? default_spin_lock_flags+0x1c/0x36
[] bdi_sched_wait+0x21/0x39
[] __wait_on_bit+0x5b/0xa3
[] ? bdi_sched_wait+0x0/0x39
[] ? bdi_sched_wait+0x0/0x39
[] out_of_line_wait_on_bit+0x7e/0x9f
[] ? wake_bit_function+0x0/0x56
[] wait_on_bit+0x2d/0x49
[] sync_inodes_sb+0x8d/0x183
[] __sync_filesystem+0x5f/0xa0
[] sync_filesystem+0x5a/0x77
[] generic_shutdown_super+0x3a/0x107
[] kill_block_super+0x3a/0x68
[] deactivate_super+0x82/0xb2
[] mntput_no_expire+0xdc/0x12f
[] ? dput+0x58/0x174
[] sys_umount+0x2d6/0x31b
[] system_call_fastpath+0x16/0x1b
INFO: task umount:6076 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
umount D ffff880001c97340 0 6076 6071 0x00000080
ffff8800986e9be8 0000000000000082 ffff8800986e9b58 ffffffff810538f5
ffff8800986e9c38 0000000000010f08 ffff8800986e9fd8 0000000000017340
ffff8800986e9fd8 0000000000017340 ffff8800a87a2e40 ffff8800bbfdae40
Call Trace:
[] ? update_curr+0xd8/0x164
[] ? default_spin_lock_flags+0x1c/0x36
[] bdi_sched_wait+0x21/0x39
[] __wait_on_bit+0x5b/0xa3
[] ? bdi_sched_wait+0x0/0x39
[] ? bdi_sched_wait+0x0/0x39
[] out_of_line_wait_on_bit+0x7e/0x9f
[] ? wake_bit_function+0x0/0x56
[] wait_on_bit+0x2d/0x49
[] sync_inodes_sb+0x8d/0x183
[] __sync_filesystem+0x5f/0xa0
[] sync_filesystem+0x5a/0x77
[] generic_shutdown_super+0x3a/0x107
[] kill_block_super+0x3a/0x68
[] deactivate_super+0x82/0xb2
[] mntput_no_expire+0xdc/0x12f
[] ? dput+0x58/0x174
[] sys_umount+0x2d6/0x31b
[] system_call_fastpath+0x16/0x1b
INFO: task umount:6076 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
umount D ffff880001c97340 0 6076 6071 0x00000080
ffff8800986e9be8 0000000000000082 ffff8800986e9b58 ffffffff810538f5
ffff8800986e9c38 0000000000010f08 ffff8800986e9fd8 0000000000017340
ffff8800986e9fd8 0000000000017340 ffff8800a87a2e40 ffff8800bbfdae40
Call Trace:
[] ? update_curr+0xd8/0x164
[] ? default_spin_lock_flags+0x1c/0x36
[] bdi_sched_wait+0x21/0x39
[] __wait_on_bit+0x5b/0xa3
[] ? bdi_sched_wait+0x0/0x39
[] ? bdi_sched_wait+0x0/0x39
[] out_of_line_wait_on_bit+0x7e/0x9f
[] ? wake_bit_function+0x0/0x56
[] wait_on_bit+0x2d/0x49
[] sync_inodes_sb+0x8d/0x183
[] __sync_filesystem+0x5f/0xa0
[] sync_filesystem+0x5a/0x77
[] generic_shutdown_super+0x3a/0x107
[] kill_block_super+0x3a/0x68
[] deactivate_super+0x82/0xb2
[] mntput_no_expire+0xdc/0x12f
[] ? dput+0x58/0x174
[] sys_umount+0x2d6/0x31b
[] system_call_fastpath+0x16/0x1b
Doing a "top" indicate no hung task:
2544 root 40 0 173m 59m 8824 S 7.9 2.0 7:26.67 Xorg
1 root 40 0 4084 864 620 S 0.0 0.0 0:00.88 init
2 root 40 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
4 root 20 0 0 0 0 S 0.0 0.0 0:00.02 ksoftirqd/0
5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
6 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/1
7 root 20 0 0 0 0 S 0.0 0.0 0:01.36 ksoftirqd/1
8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/1
9 root 20 0 0 0 0 S 0.0 0.0 0:00.24 events/0
10 root 20 0 0 0 0 S 0.0 0.0 0:00.51 events/1
11 root 20 0 0 0 0 S 0.0 0.0 0:00.02 khelper
17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 async/mgr
150 root 20 0 0 0 0 S 0.0 0.0 0:00.00 sync_supers
152 root 20 0 0 0 0 S 0.0 0.0 0:00.11 bdi-default
153 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/0
154 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/1
156 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kblockd/0
157 root 20 0 0 0 0 S 0.0 0.0 0:00.28 kblockd/1
159 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpid
160 root 20 0 0 0 0 S 0.0 0.0 0:00.01 kacpi_notify
161 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpi_hotplug
295 root 20 0 0 0 0 S 0.0 0.0 0:02.53 ata/0
Issuing a "sync" will block, and thus cannot dismount any drive, and during
system shutdown, it will again block on "Halting system"....a hard powerdown is
thus necessary.
Can anyone helped diagnose the error?
Some info:
Fedora Core 10, linus-git tree (latest):
git describe
v2.6.32-rc5-81-g964fe08
and the configuration of the "/dev/sdc":
fdisk -l /dev/sdc
Disk /dev/sdc: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0d87fdb3
Device Boot Start End Blocks Id System
/dev/sdc1 1 4864 39070048+ 83 Linux
/dev/sdc2 4865 9728 39070080 83 Linux
/dev/sdc3 9729 19455 78132127+ 83 Linux
/dev/sdc4 19456 38913 156296385 5 Extended
/dev/sdc5 19456 29899 83891398+ 83 Linux
/dev/sdc6 29900 31205 10490413+ 83 Linux
where /dev/sdc5 is ext4 and the rest are ext3 or vfat.
Upon reboot, no dmesg error are also issued when mounted, and I can also copy
files from /dev/sdc5 to other directories without any dmesg error. So not
sure how to reproduce the error.
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