Public bug reported:
How to reproduce:
umount /mnt
rm /dev/vdisk
dd if=/dev/zero of=/dev/vdisk bs=1M count=1K
mkfs.ext4 -F -O ^has_journal /dev/vdisk
mount -o loop /dev/vdisk /mnt
rm -f /mnt/test.*
fio --verify=md5 -rw=randwrite --size=10m --bs=4k --loops=10000 --iodepth=64
--group_reporting --sync=1 --direct=1 --ioengine=libaio --directory=/mnt
--name=test --thread --numjobs=16
Result:
- Sometimes fio complains about data corruption, e.g.
verify: bad magic header 0, wanted acca at file /mnt/test.7.0 offset 10481664,
length 0
- Sometimes a kernel oops is triggered
[ 2022.642479] BUG: unable to handle kernel NULL pointer dereference at
0000000000000291
[ 2022.644043] IP: [<ffffffff811de96b>] ext4_end_io_dio+0x6b/0xc0
[ 2022.645596] PGD 19e790067 PUD 19e0b6067 PMD 0
[ 2022.647131] Oops: 0000 [#1] SMP
[ 2022.648631] last sysfs file:
/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size
[ 2022.650156] CPU 0
[ 2022.650156] Modules linked in: ib_srp scsi_tgt netconsole configfs rdma_ucm
rdma_cm iw_cm ib_addr ib_ipoib ib_cm ib_sa ib_uverbs ib_umad mlx4_ib ib_mad
ib_core mlx4_en snd_hda_codec_atihdmi snd_hda_codec_analog fbcon tileblit font
bitblit softcursor
vga16fb vgastate radeon ttm drm_kms_helper snd_hda_intel snd_hda_codec
asus_atk0110 snd_hwdep psmouse lp snd_pcm snd_timer snd soundcore serio_raw
mlx4_core drm i2c_algo_bit snd_page_alloc intel_agp parport ohci1394 usbhid hid
floppy sky2 skge ieee139
4 pata_marvell ahci
[ 2022.650156] Pid: 4241, comm: loop0 Not tainted 2.6.32-42-server #95-Ubuntu
P5Q DELUXE
[ 2022.650156] RIP: 0010:[<ffffffff811de96b>] [<ffffffff811de96b>]
ext4_end_io_dio+0x6b/0xc0
[ 2022.650156] RSP: 0000:ffff88019e7f3db0 EFLAGS: 00010246
[ 2022.650156] RAX: 0000000000000001 RBX: ffff88019e00a000 RCX: 0000000000000000
[ 2022.650156] RDX: 0000000000001000 RSI: ffff8801959fd7d8 RDI: ffff88019e00a000
[ 2022.650156] RBP: ffff88019e7f3dc0 R08: 0000000000000000 R09: 5600000000000000
[ 2022.650156] R10: 0000000000000000 R11: 6db6db6db6db6db7 R12: ffff8801959fd7a8
[ 2022.650156] R13: 0000000000001000 R14: ffff8801b72c0114 R15: ffff88019e7f3e80
[ 2022.650156] FS: 0000000000000000(0000) GS:ffff880007200000(0000)
knlGS:0000000000000000
[ 2022.650156] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 2022.650156] CR2: 0000000000000291 CR3: 00000001b757f000 CR4: 00000000000406f0
[ 2022.650156] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2022.650156] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 2022.650156] Process loop0 (pid: 4241, threadinfo ffff88019e7f2000, task
ffff8801b561dc00)
[ 2022.650156] Stack:
[ 2022.650156] 0000000000000000 ffff8801b5fe6800 ffff88019e7f3df0
ffffffff8117939d
[ 2022.650156] <0> ffff88019e7f3df0 ffff8801b5fe6800 ffff8801b5fe6b24
0000000000000000
[ 2022.650156] <0> ffff88019e7f3e30 ffffffff811797a7 0000000000000286
ffff8801b72c0158
[ 2022.650156] Call Trace:
[ 2022.650156] [<ffffffff8117939d>] dio_complete+0xbd/0xe0
[ 2022.650156] [<ffffffff811797a7>] dio_bio_end_aio+0x77/0xd0
[ 2022.650156] [<ffffffff8117429d>] bio_endio+0x1d/0x40
[ 2022.650156] [<ffffffff8137f5e0>] loop_thread+0xe0/0x270
[ 2022.650156] [<ffffffff81086470>] ? autoremove_wake_function+0x0/0x40
[ 2022.650156] [<ffffffff8137f500>] ? loop_thread+0x0/0x270
[ 2022.650156] [<ffffffff810860f6>] kthread+0x96/0xa0
[ 2022.650156] [<ffffffff810141aa>] child_rip+0xa/0x20
[ 2022.650156] [<ffffffff81086060>] ? kthread+0x0/0xa0
[ 2022.650156] [<ffffffff810141a0>] ? child_rip+0x0/0x20
[ 2022.650156] Code: 00 00 00 00 00 48 8b 1c 24 4c 8b 64 24 08 c9 c3 49 8b 44
24 10 49 89 74 24 20 49 8d 74 24 30 49 89 54 24 28 48 8b 80 08 01 00 00 <48> 8b
80 90 02 00 00 48 8b b8 50 03 00 00 e8 32 3a ea ff 49 8b
[ 2022.650156] RIP [<ffffffff811de96b>] ext4_end_io_dio+0x6b/0xc0
[ 2022.650156] RSP <ffff88019e7f3db0>
[ 2022.650156] CR2: 0000000000000291
[ 2022.651252] BUG: unable to handle kernel
[ 2022.719317] ---[ end trace b9996e8ae6b732db ]---
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices: Error: [Errno 2] No such file or directory
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p',
'/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info: Error: [Errno 2] No such file or directory
Card0.Amixer.values: Error: [Errno 2] No such file or directory
Card1.Amixer.info: Error: [Errno 2] No such file or directory
Card1.Amixer.values: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=ed6b25d1-0e71-46ec-aae4-502e9ce1cc58
InstallationMedia: Ubuntu-Server 10.04.4 LTS "Lucid Lynx" - Release amd64
(20120214.2)
MachineType: System manufacturer P5Q DELUXE
Package: linux (not installed)
ProcCmdLine: root=UUID=4c2434f2-aec2-4664-8df2-f2d2ad65b039 ro quiet
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-42.95-server 2.6.32.59+drm33.24
Regression: No
RelatedPackageVersions: linux-firmware 1.34.14
Reproducible: Yes
RfKill:
Tags: lucid needs-upstream-testing
Uname: Linux 2.6.32-42-server x86_64
UserGroups:
dmi.bios.date: 07/10/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2301
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5Q DELUXE
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2301:bd07/10/2009:svnSystemmanufacturer:pnP5QDELUXE:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5QDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: P5Q DELUXE
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: apport-collected kernel-fixed-upstream
** Description changed:
How to reproduce:
umount /mnt
rm /dev/vdisk
dd if=/dev/zero of=/dev/vdisk bs=1M count=1K
mkfs.ext4 -F -O ^has_journal /dev/vdisk
mount -o loop /dev/vdisk /mnt
rm -f /mnt/test.*
fio --verify=md5 -rw=randwrite --size=10m --bs=4k --loops=10000 --iodepth=64
--group_reporting --sync=1 --direct=1 --ioengine=libaio --directory=/mnt
--name=test --thread --numjobs=16
Result:
- Sometimes fio complains about data corruption, e.g.
verify: bad magic header 0, wanted acca at file /mnt/test.7.0 offset
10481664, length 0
- - Sometimes a kernel crash is triggered
+ - Sometimes a kernel oops is triggered
[ 2022.642479] BUG: unable to handle kernel NULL pointer dereference at
0000000000000291
[ 2022.644043] IP: [<ffffffff811de96b>] ext4_end_io_dio+0x6b/0xc0
- [ 2022.645596] PGD 19e790067 PUD 19e0b6067 PMD 0
- [ 2022.647131] Oops: 0000 [#1] SMP
+ [ 2022.645596] PGD 19e790067 PUD 19e0b6067 PMD 0
+ [ 2022.647131] Oops: 0000 [#1] SMP
[ 2022.648631] last sysfs file:
/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size
- [ 2022.650156] CPU 0
+ [ 2022.650156] CPU 0
[ 2022.650156] Modules linked in: ib_srp scsi_tgt netconsole configfs
rdma_ucm rdma_cm iw_cm ib_addr ib_ipoib ib_cm ib_sa ib_uverbs ib_umad mlx4_ib
ib_mad ib_core mlx4_en snd_hda_codec_atihdmi snd_hda_codec_analog fbcon
tileblit font bitblit softcursor
- vga16fb vgastate radeon ttm drm_kms_helper snd_hda_intel snd_hda_codec
asus_atk0110 snd_hwdep psmouse lp snd_pcm snd_timer snd soundcore serio_raw
mlx4_core drm i2c_algo_bit snd_page_alloc intel_agp parport ohci1394 usbhid hid
floppy sky2 skge ieee139
+ vga16fb vgastate radeon ttm drm_kms_helper snd_hda_intel snd_hda_codec
asus_atk0110 snd_hwdep psmouse lp snd_pcm snd_timer snd soundcore serio_raw
mlx4_core drm i2c_algo_bit snd_page_alloc intel_agp parport ohci1394 usbhid hid
floppy sky2 skge ieee139
4 pata_marvell ahci
[ 2022.650156] Pid: 4241, comm: loop0 Not tainted 2.6.32-42-server #95-Ubuntu
P5Q DELUXE
[ 2022.650156] RIP: 0010:[<ffffffff811de96b>] [<ffffffff811de96b>]
ext4_end_io_dio+0x6b/0xc0
[ 2022.650156] RSP: 0000:ffff88019e7f3db0 EFLAGS: 00010246
[ 2022.650156] RAX: 0000000000000001 RBX: ffff88019e00a000 RCX:
0000000000000000
[ 2022.650156] RDX: 0000000000001000 RSI: ffff8801959fd7d8 RDI:
ffff88019e00a000
[ 2022.650156] RBP: ffff88019e7f3dc0 R08: 0000000000000000 R09:
5600000000000000
[ 2022.650156] R10: 0000000000000000 R11: 6db6db6db6db6db7 R12:
ffff8801959fd7a8
[ 2022.650156] R13: 0000000000001000 R14: ffff8801b72c0114 R15:
ffff88019e7f3e80
[ 2022.650156] FS: 0000000000000000(0000) GS:ffff880007200000(0000)
knlGS:0000000000000000
[ 2022.650156] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 2022.650156] CR2: 0000000000000291 CR3: 00000001b757f000 CR4:
00000000000406f0
[ 2022.650156] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2022.650156] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 2022.650156] Process loop0 (pid: 4241, threadinfo ffff88019e7f2000, task
ffff8801b561dc00)
[ 2022.650156] Stack:
[ 2022.650156] 0000000000000000 ffff8801b5fe6800 ffff88019e7f3df0
ffffffff8117939d
[ 2022.650156] <0> ffff88019e7f3df0 ffff8801b5fe6800 ffff8801b5fe6b24
0000000000000000
[ 2022.650156] <0> ffff88019e7f3e30 ffffffff811797a7 0000000000000286
ffff8801b72c0158
[ 2022.650156] Call Trace:
[ 2022.650156] [<ffffffff8117939d>] dio_complete+0xbd/0xe0
[ 2022.650156] [<ffffffff811797a7>] dio_bio_end_aio+0x77/0xd0
[ 2022.650156] [<ffffffff8117429d>] bio_endio+0x1d/0x40
[ 2022.650156] [<ffffffff8137f5e0>] loop_thread+0xe0/0x270
[ 2022.650156] [<ffffffff81086470>] ? autoremove_wake_function+0x0/0x40
[ 2022.650156] [<ffffffff8137f500>] ? loop_thread+0x0/0x270
[ 2022.650156] [<ffffffff810860f6>] kthread+0x96/0xa0
[ 2022.650156] [<ffffffff810141aa>] child_rip+0xa/0x20
[ 2022.650156] [<ffffffff81086060>] ? kthread+0x0/0xa0
[ 2022.650156] [<ffffffff810141a0>] ? child_rip+0x0/0x20
- [ 2022.650156] Code: 00 00 00 00 00 48 8b 1c 24 4c 8b 64 24 08 c9 c3 49 8b 44
24 10 49 89 74 24 20 49 8d 74 24 30 49 89 54 24 28 48 8b 80 08 01 00 00 <48> 8b
80 90 02 00 00 48 8b b8 50 03 00 00 e8 32 3a ea ff 49 8b
+ [ 2022.650156] Code: 00 00 00 00 00 48 8b 1c 24 4c 8b 64 24 08 c9 c3 49 8b 44
24 10 49 89 74 24 20 49 8d 74 24 30 49 89 54 24 28 48 8b 80 08 01 00 00 <48> 8b
80 90 02 00 00 48 8b b8 50 03 00 00 e8 32 3a ea ff 49 8b
[ 2022.650156] RIP [<ffffffff811de96b>] ext4_end_io_dio+0x6b/0xc0
[ 2022.650156] RSP <ffff88019e7f3db0>
[ 2022.650156] CR2: 0000000000000291
- [ 2022.651252] BUG: unable to handle kernel
+ [ 2022.651252] BUG: unable to handle kernel
[ 2022.719317] ---[ end trace b9996e8ae6b732db ]---
** Summary changed:
- Using asynchronous I/O can cause data corruption or a kernel crash
+ Using asynchronous I/O can cause data corruption or a kernel oops
** Tags added: apport-collected
** Description changed:
How to reproduce:
umount /mnt
rm /dev/vdisk
dd if=/dev/zero of=/dev/vdisk bs=1M count=1K
mkfs.ext4 -F -O ^has_journal /dev/vdisk
mount -o loop /dev/vdisk /mnt
rm -f /mnt/test.*
fio --verify=md5 -rw=randwrite --size=10m --bs=4k --loops=10000 --iodepth=64
--group_reporting --sync=1 --direct=1 --ioengine=libaio --directory=/mnt
--name=test --thread --numjobs=16
Result:
- Sometimes fio complains about data corruption, e.g.
verify: bad magic header 0, wanted acca at file /mnt/test.7.0 offset
10481664, length 0
- Sometimes a kernel oops is triggered
[ 2022.642479] BUG: unable to handle kernel NULL pointer dereference at
0000000000000291
[ 2022.644043] IP: [<ffffffff811de96b>] ext4_end_io_dio+0x6b/0xc0
[ 2022.645596] PGD 19e790067 PUD 19e0b6067 PMD 0
[ 2022.647131] Oops: 0000 [#1] SMP
[ 2022.648631] last sysfs file:
/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size
[ 2022.650156] CPU 0
[ 2022.650156] Modules linked in: ib_srp scsi_tgt netconsole configfs
rdma_ucm rdma_cm iw_cm ib_addr ib_ipoib ib_cm ib_sa ib_uverbs ib_umad mlx4_ib
ib_mad ib_core mlx4_en snd_hda_codec_atihdmi snd_hda_codec_analog fbcon
tileblit font bitblit softcursor
vga16fb vgastate radeon ttm drm_kms_helper snd_hda_intel snd_hda_codec
asus_atk0110 snd_hwdep psmouse lp snd_pcm snd_timer snd soundcore serio_raw
mlx4_core drm i2c_algo_bit snd_page_alloc intel_agp parport ohci1394 usbhid hid
floppy sky2 skge ieee139
4 pata_marvell ahci
[ 2022.650156] Pid: 4241, comm: loop0 Not tainted 2.6.32-42-server #95-Ubuntu
P5Q DELUXE
[ 2022.650156] RIP: 0010:[<ffffffff811de96b>] [<ffffffff811de96b>]
ext4_end_io_dio+0x6b/0xc0
[ 2022.650156] RSP: 0000:ffff88019e7f3db0 EFLAGS: 00010246
[ 2022.650156] RAX: 0000000000000001 RBX: ffff88019e00a000 RCX:
0000000000000000
[ 2022.650156] RDX: 0000000000001000 RSI: ffff8801959fd7d8 RDI:
ffff88019e00a000
[ 2022.650156] RBP: ffff88019e7f3dc0 R08: 0000000000000000 R09:
5600000000000000
[ 2022.650156] R10: 0000000000000000 R11: 6db6db6db6db6db7 R12:
ffff8801959fd7a8
[ 2022.650156] R13: 0000000000001000 R14: ffff8801b72c0114 R15:
ffff88019e7f3e80
[ 2022.650156] FS: 0000000000000000(0000) GS:ffff880007200000(0000)
knlGS:0000000000000000
[ 2022.650156] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 2022.650156] CR2: 0000000000000291 CR3: 00000001b757f000 CR4:
00000000000406f0
[ 2022.650156] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2022.650156] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 2022.650156] Process loop0 (pid: 4241, threadinfo ffff88019e7f2000, task
ffff8801b561dc00)
[ 2022.650156] Stack:
[ 2022.650156] 0000000000000000 ffff8801b5fe6800 ffff88019e7f3df0
ffffffff8117939d
[ 2022.650156] <0> ffff88019e7f3df0 ffff8801b5fe6800 ffff8801b5fe6b24
0000000000000000
[ 2022.650156] <0> ffff88019e7f3e30 ffffffff811797a7 0000000000000286
ffff8801b72c0158
[ 2022.650156] Call Trace:
[ 2022.650156] [<ffffffff8117939d>] dio_complete+0xbd/0xe0
[ 2022.650156] [<ffffffff811797a7>] dio_bio_end_aio+0x77/0xd0
[ 2022.650156] [<ffffffff8117429d>] bio_endio+0x1d/0x40
[ 2022.650156] [<ffffffff8137f5e0>] loop_thread+0xe0/0x270
[ 2022.650156] [<ffffffff81086470>] ? autoremove_wake_function+0x0/0x40
[ 2022.650156] [<ffffffff8137f500>] ? loop_thread+0x0/0x270
[ 2022.650156] [<ffffffff810860f6>] kthread+0x96/0xa0
[ 2022.650156] [<ffffffff810141aa>] child_rip+0xa/0x20
[ 2022.650156] [<ffffffff81086060>] ? kthread+0x0/0xa0
[ 2022.650156] [<ffffffff810141a0>] ? child_rip+0x0/0x20
[ 2022.650156] Code: 00 00 00 00 00 48 8b 1c 24 4c 8b 64 24 08 c9 c3 49 8b 44
24 10 49 89 74 24 20 49 8d 74 24 30 49 89 54 24 28 48 8b 80 08 01 00 00 <48> 8b
80 90 02 00 00 48 8b b8 50 03 00 00 e8 32 3a ea ff 49 8b
[ 2022.650156] RIP [<ffffffff811de96b>] ext4_end_io_dio+0x6b/0xc0
[ 2022.650156] RSP <ffff88019e7f3db0>
[ 2022.650156] CR2: 0000000000000291
[ 2022.651252] BUG: unable to handle kernel
[ 2022.719317] ---[ end trace b9996e8ae6b732db ]---
+ ---
+ AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
+ AplayDevices: Error: [Errno 2] No such file or directory
+ Architecture: amd64
+ ArecordDevices: Error: [Errno 2] No such file or directory
+ AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p',
'/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p',
'/dev/snd/timer'] failed with exit code 1:
+ CRDA: Error: [Errno 2] No such file or directory
+ Card0.Amixer.info: Error: [Errno 2] No such file or directory
+ Card0.Amixer.values: Error: [Errno 2] No such file or directory
+ Card1.Amixer.info: Error: [Errno 2] No such file or directory
+ Card1.Amixer.values: Error: [Errno 2] No such file or directory
+ DistroRelease: Ubuntu 10.04
+ HibernationDevice: RESUME=UUID=ed6b25d1-0e71-46ec-aae4-502e9ce1cc58
+ InstallationMedia: Ubuntu-Server 10.04.4 LTS "Lucid Lynx" - Release amd64
(20120214.2)
+ MachineType: System manufacturer P5Q DELUXE
+ Package: linux (not installed)
+ ProcCmdLine: root=UUID=4c2434f2-aec2-4664-8df2-f2d2ad65b039 ro quiet
+ ProcEnviron:
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 2.6.32-42.95-server 2.6.32.59+drm33.24
+ Regression: No
+ RelatedPackageVersions: linux-firmware 1.34.14
+ Reproducible: Yes
+ RfKill:
+
+ Tags: lucid needs-upstream-testing
+ Uname: Linux 2.6.32-42-server x86_64
+ UserGroups:
+
+ dmi.bios.date: 07/10/2009
+ dmi.bios.vendor: American Megatrends Inc.
+ dmi.bios.version: 2301
+ dmi.board.asset.tag: To Be Filled By O.E.M.
+ dmi.board.name: P5Q DELUXE
+ dmi.board.vendor: ASUSTeK Computer INC.
+ dmi.board.version: Rev 1.xx
+ dmi.chassis.asset.tag: Asset-1234567890
+ dmi.chassis.type: 3
+ dmi.chassis.vendor: Chassis Manufacture
+ dmi.chassis.version: Chassis Version
+ dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2301:bd07/10/2009:svnSystemmanufacturer:pnP5QDELUXE:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5QDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
+ dmi.product.name: P5Q DELUXE
+ dmi.product.version: System Version
+ dmi.sys.vendor: System manufacturer
--
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https://bugs.launchpad.net/bugs/1037546
Title:
Using asynchronous I/O can cause data corruption or a kernel oops
To manage notifications about this bug go to:
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