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please enter the following command in a terminal window:
apport-collect 1798574
and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1798574
Title:
bionic/linux: hung task triggered by ubuntu_vfat_stress stress-ng
testcase
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Bionic:
Confirmed
Bug description:
When running the ubuntu_vfat_stress on a powerpc64el system with
kernel 4.15.0-36-generic it triggers the following hung task:
================================================================================
10:39:09 DEBUG| [stdout] Mounted tmpfs /mnt/vfat-test-56562
10:39:09 DEBUG| [stdout] Created loop image
/mnt/vfat-test-56562/vfat-loop-data
10:39:09 DEBUG| [stdout] mkfs.fat 4.1 (2017-01-24)
10:39:09 DEBUG| [stdout]
10:39:09 DEBUG| [stdout]
--------------------------------------------------------------------------------
10:39:09 DEBUG| [stdout] VFAT options: dmask=777
10:39:09 DEBUG| [stdout] Stress test:
/home/ubuntu/autotest/client/tmp/ubuntu_vfat_stress/src/stress-ng/stress-ng
--verify --times --metrics-brief --syslog --keep-name -t 10s --hdd 2 --hdd-opts
sync,wr-rnd,rd-rnd,fadv-willneed,fadv-rnd --lockf 2 --seek 2 --aio 2
--aio-requests 32 --dentry 2 --dir 2 --dentry-order stride --fallocate 2
--fstat 2 --dentries 100 --lease 2 --open 2 --rename 2 --hdd-bytes 4M
--fallocate-bytes 4M --chdir 2 --rename 2 --hdd-write-size 512
10:39:09 DEBUG| [stdout] VFAT_IMAGE path: /mnt/vfat-test-56562
10:39:09 DEBUG| [stdout] Mount point: /mnt/vfat-test-56562
10:39:09 DEBUG| [stdout] Date: Thu Oct 18 10:39:09 UTC 2018
10:39:09 DEBUG| [stdout] Host: baltar
10:39:09 DEBUG| [stdout] Kernel: 4.15.0-36-generic #39-Ubuntu SMP Mon
Sep 24 16:18:48 UTC 2018
10:39:09 DEBUG| [stdout] Machine: baltar ppc64le ppc64le
10:39:09 DEBUG| [stdout] CPUs online: 160
10:39:09 DEBUG| [stdout] CPUs total: 160
10:39:09 DEBUG| [stdout] Page size: 65536
10:39:09 DEBUG| [stdout] Pages avail: 1907765
10:39:09 DEBUG| [stdout] Pages total: 2089666
10:39:09 DEBUG| [stdout]
--------------------------------------------------------------------------------
10:39:09 DEBUG| [stdout]
10:39:09 DEBUG| [stdout]
10:39:09 DEBUG| [stdout] stress-ng: info: [146983] dispatching hogs: 2 hdd,
2 lockf, 2 seek, 2 aio, 2 dentry, 2 dir, 2 fallocate, 2 fstat, 2 lease, 2 open,
2 rename, 2 chdir, 2 rename
10:39:09 DEBUG| [stdout] stress-ng: info: [146983] cache allocate: using
built-in defaults as unable to determine cache details
10:39:11 DEBUG| [stdout] stress-ng: fail: [147027] stress-ng-chdir: mkdir
failed, errno=28 (No space left on device)
10:39:11 DEBUG| [stdout] stress-ng: fail: [147007] stress-ng-hdd: read
failed, errno=28 (No space left on device)
10:39:11 DEBUG| [stdout] stress-ng: fail: [146993] stress-ng-hdd: read
failed, errno=28 (No space left on device)
10:39:11 DEBUG| [stdout] stress-ng: fail: [147005] stress-ng-chdir: mkdir
failed, errno=28 (No space left on device)
10:39:12 DEBUG| [stdout] stress-ng: error: [146983] process 146993
(stress-ng-hdd) terminated with an error, exit status=1 (stress-ng core failure)
10:39:12 DEBUG| [stdout] stress-ng: error: [146983] process 147007
(stress-ng-hdd) terminated with an error, exit status=1 (stress-ng core failure)
10:42:05 DEBUG| [stdout] Found kernel warning and/or call trace:
10:42:05 DEBUG| [stdout]
10:42:05 DEBUG| [stdout] [ 5869.838856] TESTING: --verify --times
--metrics-brief --syslog --keep-name -t 10s --hdd 2 --hdd-opts
sync,wr-rnd,rd-rnd,fadv-willneed,fadv-rnd --lockf 2 --seek 2 --aio 2
--aio-requests 32 --dentry 2 --dir 2 --dentry-order stride --fallocate 2
--fstat 2 --dentries 100 --lease 2 --open 2 --rename 2 --hdd-bytes 4M
--fallocate-bytes 4M --chdir 2 --rename 2 --hdd-write-size 512
10:42:05 DEBUG| [stdout] [ 5870.027499] ubuntu_vfat_str (56562): drop_caches:
1
10:42:05 DEBUG| [stdout] [ 5870.037987] ubuntu_vfat_str (56562): drop_caches:
2
10:42:05 DEBUG| [stdout] [ 5870.041591] ubuntu_vfat_str (56562): drop_caches:
3
10:42:05 DEBUG| [stdout] [ 5870.441211] VFAT options: dmask=777
10:42:05 DEBUG| [stdout] [ 5870.441271] Stress test:
/home/ubuntu/autotest/client/tmp/ubuntu_vfat_stress/src/stress-ng/stress-ng
--verify --times --metrics-brief --syslog --keep-name -t 10s --hdd 2 --hdd-opts
sync,wr-rnd,rd-rnd,fadv-willneed,fadv-rnd --lockf 2 --seek 2 --aio 2
--aio-requests 32 --dentry 2 --dir 2 --dentry-order stride --fallocate 2
--fstat 2 --dentries 100 --lease 2 --open 2 --rename 2 --hdd-bytes 4M
--fallocate-bytes 4M --chdir 2 --rename 2 --hdd-write-size 512
10:42:05 DEBUG| [stdout] [ 5870.441296] Mount point: /mnt/vfat-test-56562
10:42:05 DEBUG| [stdout] [ 6044.945208] INFO: task kworker/u322:0:46400
blocked for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.945277] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.945313] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.945366] kworker/u322:0 D 0 46400 2
0x00000800
10:42:05 DEBUG| [stdout] [ 6044.945378] Workqueue: writeback wb_workfn
(flush-7:0)
10:42:05 DEBUG| [stdout] [ 6044.945380] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.945385] [c000200db8b22af0] [c000200db8b22b20]
0xc000200db8b22b20 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.945391] [c000200db8b22cc0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.945397] [c000200db8b22d20] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.945400] [c000200db8b22df0] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.945404] [c000200db8b22e10] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.945408] [c000200db8b22e40] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.945412] [c000200db8b22ee0] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.945417] [c000200db8b22f80] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.945420] [c000200db8b22ff0] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.945424] [c000200db8b230a0] [c00000000042dd0c]
submit_bh_wbc+0x1dc/0x240
10:42:05 DEBUG| [stdout] [ 6044.945428] [c000200db8b230f0] [c00000000042dfe8]
__block_write_full_page+0x278/0x570
10:42:05 DEBUG| [stdout] [ 6044.945431] [c000200db8b23190] [c00000000054aa2c]
fat_writepage+0x2c/0x40
10:42:05 DEBUG| [stdout] [ 6044.945434] [c000200db8b231b0] [c00000000043bcd0]
__mpage_writepage+0x170/0x7b0
10:42:05 DEBUG| [stdout] [ 6044.945438] [c000200db8b236e0] [c0000000002f2c5c]
write_cache_pages+0x25c/0x590
10:42:05 DEBUG| [stdout] [ 6044.945441] [c000200db8b23820] [c00000000043b9a8]
mpage_writepages+0x78/0x150
10:42:05 DEBUG| [stdout] [ 6044.945443] [c000200db8b238b0] [c00000000054a9a8]
fat_writepages+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.945446] [c000200db8b238d0] [c0000000002f5ddc]
do_writepages+0x4c/0x130
10:42:05 DEBUG| [stdout] [ 6044.945449] [c000200db8b23940] [c00000000041eed0]
__writeback_single_inode+0x70/0x570
10:42:05 DEBUG| [stdout] [ 6044.945451] [c000200db8b239a0] [c00000000041fa6c]
writeback_sb_inodes+0x26c/0x5d0
10:42:05 DEBUG| [stdout] [ 6044.945453] [c000200db8b23ab0] [c00000000042012c]
wb_writeback+0x13c/0x460
10:42:05 DEBUG| [stdout] [ 6044.945456] [c000200db8b23b80] [c000000000420e00]
wb_workfn+0x100/0x5e0
10:42:05 DEBUG| [stdout] [ 6044.945459] [c000200db8b23c90] [c000000000134a98]
process_one_work+0x298/0x5a0
10:42:05 DEBUG| [stdout] [ 6044.945462] [c000200db8b23d20] [c000000000134e38]
worker_thread+0x98/0x630
10:42:05 DEBUG| [stdout] [ 6044.945465] [c000200db8b23dc0] [c00000000013da68]
kthread+0x1a8/0x1b0
10:42:05 DEBUG| [stdout] [ 6044.945470] [c000200db8b23e30] [c00000000000b658]
ret_from_kernel_thread+0x5c/0x84
10:42:05 DEBUG| [stdout] [ 6044.945474] INFO: task stress-ng:146997 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.945532] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.945567] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.945619] stress-ng D 0 146997 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.945622] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.945624] [c000200daa85b910] [0000006f0000006a]
0x6f0000006a (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.945628] [c000200daa85bae0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.945631] [c000200daa85bb40] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.945634] [c000200daa85bc10] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.945636] [c000200daa85bc30] [c00000000041cc04]
wb_wait_for_completion+0x94/0xe0
10:42:05 DEBUG| [stdout] [ 6044.945639] [c000200daa85bc90] [c00000000041e2f8]
sync_inodes_sb+0xd8/0x310
10:42:05 DEBUG| [stdout] [ 6044.945642] [c000200daa85bd60] [c000000000425fdc]
sync_inodes_one_sb+0x2c/0x40
10:42:05 DEBUG| [stdout] [ 6044.945645] [c000200daa85bd80] [c0000000003daa4c]
iterate_supers+0xec/0x200
10:42:05 DEBUG| [stdout] [ 6044.945648] [c000200daa85bdf0] [c0000000004265d4]
sys_sync+0x54/0xf0
10:42:05 DEBUG| [stdout] [ 6044.945651] [c000200daa85be30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.945653] INFO: task stress-ng:146999 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.945698] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.945733] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.945784] stress-ng D 0 146999 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.945787] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.945789] [c000200daa826d90] [c000200daa826de0]
0xc000200daa826de0 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.945792] [c000200daa826f60] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.945795] [c000200daa826fc0] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.945798] [c000200daa827090] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.945801] [c000200daa8270b0] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.945804] [c000200daa8270e0] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.945807] [c000200daa827180] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.945810] [c000200daa827220] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.945813] [c000200daa827290] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.945816] [c000200daa827340] [c00000000042dd0c]
submit_bh_wbc+0x1dc/0x240
10:42:05 DEBUG| [stdout] [ 6044.945819] [c000200daa827390] [c00000000042dfe8]
__block_write_full_page+0x278/0x570
10:42:05 DEBUG| [stdout] [ 6044.945821] [c000200daa827430] [c00000000054aa2c]
fat_writepage+0x2c/0x40
10:42:05 DEBUG| [stdout] [ 6044.945824] [c000200daa827450] [c00000000043bcd0]
__mpage_writepage+0x170/0x7b0
10:42:05 DEBUG| [stdout] [ 6044.945827] [c000200daa827980] [c0000000002f2c5c]
write_cache_pages+0x25c/0x590
10:42:05 DEBUG| [stdout] [ 6044.945829] [c000200daa827ac0] [c00000000043b9a8]
mpage_writepages+0x78/0x150
10:42:05 DEBUG| [stdout] [ 6044.945832] [c000200daa827b50] [c00000000054a9a8]
fat_writepages+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.945835] [c000200daa827b70] [c0000000002f5ddc]
do_writepages+0x4c/0x130
10:42:05 DEBUG| [stdout] [ 6044.945839] [c000200daa827be0] [c0000000002e06e8]
__filemap_fdatawrite_range+0x108/0x180
10:42:05 DEBUG| [stdout] [ 6044.945842] [c000200daa827c80] [c0000000002e0a18]
file_write_and_wait_range+0x88/0x100
10:42:05 DEBUG| [stdout] [ 6044.945846] [c000200daa827cd0] [c000000000416b10]
__generic_file_fsync+0x40/0x170
10:42:05 DEBUG| [stdout] [ 6044.945849] [c000200daa827d20] [c000000000416c6c]
generic_file_fsync+0x2c/0x70
10:42:05 DEBUG| [stdout] [ 6044.945854] [c000200daa827d50] [c000000000548eb0]
fat_file_fsync+0x30/0x80
10:42:05 DEBUG| [stdout] [ 6044.945856] [c000200daa827d80] [c000000000426288]
vfs_fsync_range+0x78/0x170
10:42:05 DEBUG| [stdout] [ 6044.945859] [c000200daa827dd0] [c000000000426408]
do_fsync+0x58/0xd0
10:42:05 DEBUG| [stdout] [ 6044.945861] [c000200daa827e10] [c0000000004267f8]
SyS_fsync+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.945865] [c000200daa827e30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.945867] INFO: task stress-ng:147003 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.945911] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.945946] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.945998] stress-ng D 0 147003 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.946000] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.946002] [c000200daa8636e0] [c000200daa863730]
0xc000200daa863730 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.946006] [c000200daa8638b0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.946009] [c000200daa863910] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.946012] [c000200daa8639e0] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946015] [c000200daa863a00] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.946017] [c000200daa863a30] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.946020] [c000200daa863ad0] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.946023] [c000200daa863b70] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.946026] [c000200daa863be0] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.946030] [c000200daa863c90] [c000000000676ad4]
submit_bio_wait+0x64/0xa0
10:42:05 DEBUG| [stdout] [ 6044.946033] [c000200daa863ce0] [c00000000068bed4]
blkdev_issue_flush+0xb4/0x110
10:42:05 DEBUG| [stdout] [ 6044.946036] [c000200daa863d20] [c000000000416c8c]
generic_file_fsync+0x4c/0x70
10:42:05 DEBUG| [stdout] [ 6044.946039] [c000200daa863d50] [c000000000548eb0]
fat_file_fsync+0x30/0x80
10:42:05 DEBUG| [stdout] [ 6044.946041] [c000200daa863d80] [c000000000426288]
vfs_fsync_range+0x78/0x170
10:42:05 DEBUG| [stdout] [ 6044.946044] [c000200daa863dd0] [c000000000426408]
do_fsync+0x58/0xd0
10:42:05 DEBUG| [stdout] [ 6044.946046] [c000200daa863e10] [c0000000004267f8]
SyS_fsync+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.946049] [c000200daa863e30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.946052] INFO: task stress-ng:147006 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.946096] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.946131] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.946184] stress-ng D 0 147006 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.946187] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.946188] [c000200daa8236e0] [c000200daa823730]
0xc000200daa823730 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.946192] [c000200daa8238b0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.946195] [c000200daa823910] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.946198] [c000200daa8239e0] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946201] [c000200daa823a00] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.946203] [c000200daa823a30] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.946206] [c000200daa823ad0] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.946209] [c000200daa823b70] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.946212] [c000200daa823be0] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.946215] [c000200daa823c90] [c000000000676ad4]
submit_bio_wait+0x64/0xa0
10:42:05 DEBUG| [stdout] [ 6044.946217] [c000200daa823ce0] [c00000000068bed4]
blkdev_issue_flush+0xb4/0x110
10:42:05 DEBUG| [stdout] [ 6044.946220] [c000200daa823d20] [c000000000416c8c]
generic_file_fsync+0x4c/0x70
10:42:05 DEBUG| [stdout] [ 6044.946223] [c000200daa823d50] [c000000000548eb0]
fat_file_fsync+0x30/0x80
10:42:05 DEBUG| [stdout] [ 6044.946226] [c000200daa823d80] [c000000000426288]
vfs_fsync_range+0x78/0x170
10:42:05 DEBUG| [stdout] [ 6044.946228] [c000200daa823dd0] [c000000000426408]
do_fsync+0x58/0xd0
10:42:05 DEBUG| [stdout] [ 6044.946231] [c000200daa823e10] [c0000000004267f8]
SyS_fsync+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.946234] [c000200daa823e30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.946236] INFO: task stress-ng:147010 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.946279] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.946315] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.946367] stress-ng D 0 147010 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.946369] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.946371] [c000200daa86b5b0] [c000200daa86b600]
0xc000200daa86b600 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.946375] [c000200daa86b780] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.946377] [c000200daa86b7e0] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.946380] [c000200daa86b8b0] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946383] [c000200daa86b8d0] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.946386] [c000200daa86b900] [c0000000002dc52c]
__lock_page+0x14c/0x1c0
10:42:05 DEBUG| [stdout] [ 6044.946389] [c000200daa86b9a0] [c0000000002de5fc]
pagecache_get_page+0x2ac/0x450
10:42:05 DEBUG| [stdout] [ 6044.946392] [c000200daa86ba00] [c0000000002de7d4]
grab_cache_page_write_begin+0x34/0x70
10:42:05 DEBUG| [stdout] [ 6044.946395] [c000200daa86ba30] [c00000000042f53c]
block_write_begin+0x4c/0x170
10:42:05 DEBUG| [stdout] [ 6044.946397] [c000200daa86ba80] [c00000000042f8ec]
cont_write_begin+0x28c/0x3a0
10:42:05 DEBUG| [stdout] [ 6044.946399] [c000200daa86bb40] [c00000000054a8c8]
fat_write_begin+0x58/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946402] [c000200daa86bbd0] [c0000000002ddc5c]
generic_perform_write+0xec/0x270
10:42:05 DEBUG| [stdout] [ 6044.946405] [c000200daa86bc60] [c0000000002e2290]
__generic_file_write_iter+0x250/0x2a0
10:42:05 DEBUG| [stdout] [ 6044.946409] [c000200daa86bcc0] [c0000000002e24ec]
generic_file_write_iter+0x20c/0x2e0
10:42:05 DEBUG| [stdout] [ 6044.946413] [c000200daa86bd00] [c0000000003d2554]
new_sync_write+0x104/0x160
10:42:05 DEBUG| [stdout] [ 6044.946415] [c000200daa86bd90] [c0000000003d5c98]
vfs_write+0xd8/0x220
10:42:05 DEBUG| [stdout] [ 6044.946417] [c000200daa86bde0] [c0000000003d5fb8]
SyS_write+0x68/0x110
10:42:05 DEBUG| [stdout] [ 6044.946420] [c000200daa86be30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.946422] INFO: task stress-ng:147013 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.946466] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.946502] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.946553] stress-ng D 0 147013 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.946556] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.946558] [c000200daa817910] [0000009400000028]
0x9400000028 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.946561] [c000200daa817ae0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.946564] [c000200daa817b40] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.946567] [c000200daa817c10] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946569] [c000200daa817c30] [c00000000041cc04]
wb_wait_for_completion+0x94/0xe0
10:42:05 DEBUG| [stdout] [ 6044.946572] [c000200daa817c90] [c00000000041e2f8]
sync_inodes_sb+0xd8/0x310
10:42:05 DEBUG| [stdout] [ 6044.946574] [c000200daa817d60] [c000000000425fdc]
sync_inodes_one_sb+0x2c/0x40
10:42:05 DEBUG| [stdout] [ 6044.946577] [c000200daa817d80] [c0000000003daa4c]
iterate_supers+0xec/0x200
10:42:05 DEBUG| [stdout] [ 6044.946579] [c000200daa817df0] [c0000000004265d4]
sys_sync+0x54/0xf0
10:42:05 DEBUG| [stdout] [ 6044.946582] [c000200daa817e30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.946584] INFO: task stress-ng:147016 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.946628] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.946663] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.946715] stress-ng D 0 147016 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.946717] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.946719] [c000200daa852d90] [c000200daa852de0]
0xc000200daa852de0 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.946722] [c000200daa852f60] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.946725] [c000200daa852fc0] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.946728] [c000200daa853090] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946731] [c000200daa8530b0] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.946733] [c000200daa8530e0] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.946736] [c000200daa853180] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.946739] [c000200daa853220] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.946742] [c000200daa853290] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.946745] [c000200daa853340] [c00000000042dd0c]
submit_bh_wbc+0x1dc/0x240
10:42:05 DEBUG| [stdout] [ 6044.946748] [c000200daa853390] [c00000000042dfe8]
__block_write_full_page+0x278/0x570
10:42:05 DEBUG| [stdout] [ 6044.946751] [c000200daa853430] [c00000000054aa2c]
fat_writepage+0x2c/0x40
10:42:05 DEBUG| [stdout] [ 6044.946753] [c000200daa853450] [c00000000043bcd0]
__mpage_writepage+0x170/0x7b0
10:42:05 DEBUG| [stdout] [ 6044.946756] [c000200daa853980] [c0000000002f2c5c]
write_cache_pages+0x25c/0x590
10:42:05 DEBUG| [stdout] [ 6044.946759] [c000200daa853ac0] [c00000000043b9a8]
mpage_writepages+0x78/0x150
10:42:05 DEBUG| [stdout] [ 6044.946761] [c000200daa853b50] [c00000000054a9a8]
fat_writepages+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.946764] [c000200daa853b70] [c0000000002f5ddc]
do_writepages+0x4c/0x130
10:42:05 DEBUG| [stdout] [ 6044.946767] [c000200daa853be0] [c0000000002e06e8]
__filemap_fdatawrite_range+0x108/0x180
10:42:05 DEBUG| [stdout] [ 6044.946770] [c000200daa853c80] [c0000000002e0a18]
file_write_and_wait_range+0x88/0x100
10:42:05 DEBUG| [stdout] [ 6044.946773] [c000200daa853cd0] [c000000000416b10]
__generic_file_fsync+0x40/0x170
10:42:05 DEBUG| [stdout] [ 6044.946776] [c000200daa853d20] [c000000000416c6c]
generic_file_fsync+0x2c/0x70
10:42:05 DEBUG| [stdout] [ 6044.946779] [c000200daa853d50] [c000000000548eb0]
fat_file_fsync+0x30/0x80
10:42:05 DEBUG| [stdout] [ 6044.946782] [c000200daa853d80] [c000000000426288]
vfs_fsync_range+0x78/0x170
10:42:05 DEBUG| [stdout] [ 6044.946784] [c000200daa853dd0] [c000000000426408]
do_fsync+0x58/0xd0
10:42:05 DEBUG| [stdout] [ 6044.946787] [c000200daa853e10] [c0000000004267f8]
SyS_fsync+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.946790] [c000200daa853e30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.946792] INFO: task stress-ng:147023 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.946836] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.946885] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.946937] stress-ng D 0 147023 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.946939] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.946941] [c000200daa8436e0] [c000200daa843730]
0xc000200daa843730 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.946945] [c000200daa8438b0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.946948] [c000200daa843910] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.946951] [c000200daa8439e0] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946954] [c000200daa843a00] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.946956] [c000200daa843a30] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.946959] [c000200daa843ad0] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.946962] [c000200daa843b70] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.946964] [c000200daa843be0] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.946968] [c000200daa843c90] [c000000000676ad4]
submit_bio_wait+0x64/0xa0
10:42:05 DEBUG| [stdout] [ 6044.946970] [c000200daa843ce0] [c00000000068bed4]
blkdev_issue_flush+0xb4/0x110
10:42:05 DEBUG| [stdout] [ 6044.946973] [c000200daa843d20] [c000000000416c8c]
generic_file_fsync+0x4c/0x70
10:42:05 DEBUG| [stdout] [ 6044.946976] [c000200daa843d50] [c000000000548eb0]
fat_file_fsync+0x30/0x80
10:42:05 DEBUG| [stdout] [ 6044.946978] [c000200daa843d80] [c000000000426288]
vfs_fsync_range+0x78/0x170
10:42:05 DEBUG| [stdout] [ 6044.946981] [c000200daa843dd0] [c000000000426408]
do_fsync+0x58/0xd0
10:42:05 DEBUG| [stdout] [ 6044.946983] [c000200daa843e10] [c0000000004267f8]
SyS_fsync+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.946986] [c000200daa843e30] [c00000000000b284]
system_call+0x58/0x6c
10:42:05 DEBUG| [stdout] [ 6044.946989] INFO: task stress-ng:147028 blocked
for more than 120 seconds.
10:42:05 DEBUG| [stdout] [ 6044.947033] Not tainted 4.15.0-36-generic
#39-Ubuntu
10:42:05 DEBUG| [stdout] [ 6044.947068] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
10:42:05 DEBUG| [stdout] [ 6044.947120] stress-ng D 0 147028 146983
0x00040002
10:42:05 DEBUG| [stdout] [ 6044.947122] Call Trace:
10:42:05 DEBUG| [stdout] [ 6044.947124] [c000200daa87f6e0] [c000200daa87f730]
0xc000200daa87f730 (unreliable)
10:42:05 DEBUG| [stdout] [ 6044.947127] [c000200daa87f8b0] [c00000000001c1d0]
__switch_to+0x2a0/0x4d0
10:42:05 DEBUG| [stdout] [ 6044.947130] [c000200daa87f910] [c000000000cfcae4]
__schedule+0x2a4/0xaf0
10:42:05 DEBUG| [stdout] [ 6044.947133] [c000200daa87f9e0] [c000000000cfd370]
schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.947136] [c000200daa87fa00] [c000000000152d9c]
io_schedule+0x2c/0x50
10:42:05 DEBUG| [stdout] [ 6044.947138] [c000200daa87fa30] [c0000000006d1804]
wbt_wait+0x484/0x4e0
10:42:05 DEBUG| [stdout] [ 6044.947141] [c000200daa87fad0] [c000000000698924]
blk_mq_make_request+0x104/0x6e0
10:42:05 DEBUG| [stdout] [ 6044.947144] [c000200daa87fb70] [c000000000686594]
generic_make_request+0x124/0x380
10:42:05 DEBUG| [stdout] [ 6044.947147] [c000200daa87fbe0] [c0000000006868ac]
submit_bio+0xbc/0x1d0
10:42:05 DEBUG| [stdout] [ 6044.947150] [c000200daa87fc90] [c000000000676ad4]
submit_bio_wait+0x64/0xa0
10:42:05 DEBUG| [stdout] [ 6044.947152] [c000200daa87fce0] [c00000000068bed4]
blkdev_issue_flush+0xb4/0x110
10:42:05 DEBUG| [stdout] [ 6044.947155] [c000200daa87fd20] [c000000000416c8c]
generic_file_fsync+0x4c/0x70
10:42:05 DEBUG| [stdout] [ 6044.947158] [c000200daa87fd50] [c000000000548eb0]
fat_file_fsync+0x30/0x80
10:42:05 DEBUG| [stdout] [ 6044.947161] [c000200daa87fd80] [c000000000426288]
vfs_fsync_range+0x78/0x170
10:42:05 DEBUG| [stdout] [ 6044.947163] [c000200daa87fdd0] [c000000000426408]
do_fsync+0x58/0xd0
10:42:05 DEBUG| [stdout] [ 6044.947166] [c000200daa87fe10] [c0000000004267f8]
SyS_fsync+0x28/0x40
10:42:05 DEBUG| [stdout] [ 6044.947169] [c000200daa87fe30] [c00000000000b284]
system_call+0x58/0x6c
================================================================================
It was also triggered on ADT with kernel 4.15.0-38-generic (but not with
4.15.0-36)
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-bionic/bionic/ppc64el/l/linux/20181017_151749_d42a8@/log.gz
This has not yet been observed in other architectures.
How to reproduce:
Clone autotest and autotest-client-tests repos and run:
$ AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest-local
--verbose autotest/client/tests/ubuntu_vfat_stress/control
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1798574/+subscriptions
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