bionic/linux: hung task triggered by ubuntu_vfat_stress stress-ng testcase
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-kernel-tests |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Colin Ian King | ||
Bionic |
Fix Released
|
Undecided
|
Colin Ian King |
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-
10:39:09 DEBUG| [stdout] Created loop image /mnt/vfat-
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/
10:39:09 DEBUG| [stdout] VFAT_IMAGE path: /mnt/vfat-
10:39:09 DEBUG| [stdout] Mount point: /mnt/vfat-
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-
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/
10:42:05 DEBUG| [stdout] [ 5870.441296] Mount point: /mnt/vfat-
10:42:05 DEBUG| [stdout] [ 6044.945208] INFO: task kworker/
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.945397] [c000200db8b22d20] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.945400] [c000200db8b22df0] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.945404] [c000200db8b22e10] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.945408] [c000200db8b22e40] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.945412] [c000200db8b22ee0] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.945417] [c000200db8b22f80] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.945420] [c000200db8b22ff0] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.945424] [c000200db8b230a0] [c00000000042dd0c] submit_
10:42:05 DEBUG| [stdout] [ 6044.945428] [c000200db8b230f0] [c00000000042dfe8] __block_
10:42:05 DEBUG| [stdout] [ 6044.945431] [c000200db8b23190] [c00000000054aa2c] fat_writepage+
10:42:05 DEBUG| [stdout] [ 6044.945434] [c000200db8b231b0] [c00000000043bcd0] __mpage_
10:42:05 DEBUG| [stdout] [ 6044.945438] [c000200db8b236e0] [c0000000002f2c5c] write_cache_
10:42:05 DEBUG| [stdout] [ 6044.945441] [c000200db8b23820] [c00000000043b9a8] mpage_writepage
10:42:05 DEBUG| [stdout] [ 6044.945443] [c000200db8b238b0] [c00000000054a9a8] fat_writepages+
10:42:05 DEBUG| [stdout] [ 6044.945446] [c000200db8b238d0] [c0000000002f5ddc] do_writepages+
10:42:05 DEBUG| [stdout] [ 6044.945449] [c000200db8b23940] [c00000000041eed0] __writeback_
10:42:05 DEBUG| [stdout] [ 6044.945451] [c000200db8b239a0] [c00000000041fa6c] writeback_
10:42:05 DEBUG| [stdout] [ 6044.945453] [c000200db8b23ab0] [c00000000042012c] wb_writeback+
10:42:05 DEBUG| [stdout] [ 6044.945456] [c000200db8b23b80] [c000000000420e00] wb_workfn+
10:42:05 DEBUG| [stdout] [ 6044.945459] [c000200db8b23c90] [c000000000134a98] process_
10:42:05 DEBUG| [stdout] [ 6044.945462] [c000200db8b23d20] [c000000000134e38] worker_
10:42:05 DEBUG| [stdout] [ 6044.945465] [c000200db8b23dc0] [c00000000013da68] kthread+0x1a8/0x1b0
10:42:05 DEBUG| [stdout] [ 6044.945470] [c000200db8b23e30] [c00000000000b658] ret_from_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.945631] [c000200daa85bb40] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.945634] [c000200daa85bc10] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.945636] [c000200daa85bc30] [c00000000041cc04] wb_wait_
10:42:05 DEBUG| [stdout] [ 6044.945639] [c000200daa85bc90] [c00000000041e2f8] sync_inodes_
10:42:05 DEBUG| [stdout] [ 6044.945642] [c000200daa85bd60] [c000000000425fdc] sync_inodes_
10:42:05 DEBUG| [stdout] [ 6044.945645] [c000200daa85bd80] [c0000000003daa4c] iterate_
10:42:05 DEBUG| [stdout] [ 6044.945648] [c000200daa85bdf0] [c0000000004265d4] sys_sync+0x54/0xf0
10:42:05 DEBUG| [stdout] [ 6044.945651] [c000200daa85be30] [c00000000000b284] system_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.945795] [c000200daa826fc0] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.945798] [c000200daa827090] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.945801] [c000200daa8270b0] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.945804] [c000200daa8270e0] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.945807] [c000200daa827180] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.945810] [c000200daa827220] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.945813] [c000200daa827290] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.945816] [c000200daa827340] [c00000000042dd0c] submit_
10:42:05 DEBUG| [stdout] [ 6044.945819] [c000200daa827390] [c00000000042dfe8] __block_
10:42:05 DEBUG| [stdout] [ 6044.945821] [c000200daa827430] [c00000000054aa2c] fat_writepage+
10:42:05 DEBUG| [stdout] [ 6044.945824] [c000200daa827450] [c00000000043bcd0] __mpage_
10:42:05 DEBUG| [stdout] [ 6044.945827] [c000200daa827980] [c0000000002f2c5c] write_cache_
10:42:05 DEBUG| [stdout] [ 6044.945829] [c000200daa827ac0] [c00000000043b9a8] mpage_writepage
10:42:05 DEBUG| [stdout] [ 6044.945832] [c000200daa827b50] [c00000000054a9a8] fat_writepages+
10:42:05 DEBUG| [stdout] [ 6044.945835] [c000200daa827b70] [c0000000002f5ddc] do_writepages+
10:42:05 DEBUG| [stdout] [ 6044.945839] [c000200daa827be0] [c0000000002e06e8] __filemap_
10:42:05 DEBUG| [stdout] [ 6044.945842] [c000200daa827c80] [c0000000002e0a18] file_write_
10:42:05 DEBUG| [stdout] [ 6044.945846] [c000200daa827cd0] [c000000000416b10] __generic_
10:42:05 DEBUG| [stdout] [ 6044.945849] [c000200daa827d20] [c000000000416c6c] generic_
10:42:05 DEBUG| [stdout] [ 6044.945854] [c000200daa827d50] [c000000000548eb0] fat_file_
10:42:05 DEBUG| [stdout] [ 6044.945856] [c000200daa827d80] [c000000000426288] vfs_fsync_
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_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.946009] [c000200daa863910] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.946012] [c000200daa8639e0] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946015] [c000200daa863a00] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.946017] [c000200daa863a30] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.946020] [c000200daa863ad0] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.946023] [c000200daa863b70] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.946026] [c000200daa863be0] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.946030] [c000200daa863c90] [c000000000676ad4] submit_
10:42:05 DEBUG| [stdout] [ 6044.946033] [c000200daa863ce0] [c00000000068bed4] blkdev_
10:42:05 DEBUG| [stdout] [ 6044.946036] [c000200daa863d20] [c000000000416c8c] generic_
10:42:05 DEBUG| [stdout] [ 6044.946039] [c000200daa863d50] [c000000000548eb0] fat_file_
10:42:05 DEBUG| [stdout] [ 6044.946041] [c000200daa863d80] [c000000000426288] vfs_fsync_
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_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.946195] [c000200daa823910] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.946198] [c000200daa8239e0] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946201] [c000200daa823a00] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.946203] [c000200daa823a30] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.946206] [c000200daa823ad0] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.946209] [c000200daa823b70] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.946212] [c000200daa823be0] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.946215] [c000200daa823c90] [c000000000676ad4] submit_
10:42:05 DEBUG| [stdout] [ 6044.946217] [c000200daa823ce0] [c00000000068bed4] blkdev_
10:42:05 DEBUG| [stdout] [ 6044.946220] [c000200daa823d20] [c000000000416c8c] generic_
10:42:05 DEBUG| [stdout] [ 6044.946223] [c000200daa823d50] [c000000000548eb0] fat_file_
10:42:05 DEBUG| [stdout] [ 6044.946226] [c000200daa823d80] [c000000000426288] vfs_fsync_
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_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.946377] [c000200daa86b7e0] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.946380] [c000200daa86b8b0] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946383] [c000200daa86b8d0] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.946386] [c000200daa86b900] [c0000000002dc52c] __lock_
10:42:05 DEBUG| [stdout] [ 6044.946389] [c000200daa86b9a0] [c0000000002de5fc] pagecache_
10:42:05 DEBUG| [stdout] [ 6044.946392] [c000200daa86ba00] [c0000000002de7d4] grab_cache_
10:42:05 DEBUG| [stdout] [ 6044.946395] [c000200daa86ba30] [c00000000042f53c] block_write_
10:42:05 DEBUG| [stdout] [ 6044.946397] [c000200daa86ba80] [c00000000042f8ec] cont_write_
10:42:05 DEBUG| [stdout] [ 6044.946399] [c000200daa86bb40] [c00000000054a8c8] fat_write_
10:42:05 DEBUG| [stdout] [ 6044.946402] [c000200daa86bbd0] [c0000000002ddc5c] generic_
10:42:05 DEBUG| [stdout] [ 6044.946405] [c000200daa86bc60] [c0000000002e2290] __generic_
10:42:05 DEBUG| [stdout] [ 6044.946409] [c000200daa86bcc0] [c0000000002e24ec] generic_
10:42:05 DEBUG| [stdout] [ 6044.946413] [c000200daa86bd00] [c0000000003d2554] new_sync_
10:42:05 DEBUG| [stdout] [ 6044.946415] [c000200daa86bd90] [c0000000003d5c98] vfs_write+
10:42:05 DEBUG| [stdout] [ 6044.946417] [c000200daa86bde0] [c0000000003d5fb8] SyS_write+
10:42:05 DEBUG| [stdout] [ 6044.946420] [c000200daa86be30] [c00000000000b284] system_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.946564] [c000200daa817b40] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.946567] [c000200daa817c10] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946569] [c000200daa817c30] [c00000000041cc04] wb_wait_
10:42:05 DEBUG| [stdout] [ 6044.946572] [c000200daa817c90] [c00000000041e2f8] sync_inodes_
10:42:05 DEBUG| [stdout] [ 6044.946574] [c000200daa817d60] [c000000000425fdc] sync_inodes_
10:42:05 DEBUG| [stdout] [ 6044.946577] [c000200daa817d80] [c0000000003daa4c] iterate_
10:42:05 DEBUG| [stdout] [ 6044.946579] [c000200daa817df0] [c0000000004265d4] sys_sync+0x54/0xf0
10:42:05 DEBUG| [stdout] [ 6044.946582] [c000200daa817e30] [c00000000000b284] system_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.946725] [c000200daa852fc0] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.946728] [c000200daa853090] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946731] [c000200daa8530b0] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.946733] [c000200daa8530e0] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.946736] [c000200daa853180] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.946739] [c000200daa853220] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.946742] [c000200daa853290] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.946745] [c000200daa853340] [c00000000042dd0c] submit_
10:42:05 DEBUG| [stdout] [ 6044.946748] [c000200daa853390] [c00000000042dfe8] __block_
10:42:05 DEBUG| [stdout] [ 6044.946751] [c000200daa853430] [c00000000054aa2c] fat_writepage+
10:42:05 DEBUG| [stdout] [ 6044.946753] [c000200daa853450] [c00000000043bcd0] __mpage_
10:42:05 DEBUG| [stdout] [ 6044.946756] [c000200daa853980] [c0000000002f2c5c] write_cache_
10:42:05 DEBUG| [stdout] [ 6044.946759] [c000200daa853ac0] [c00000000043b9a8] mpage_writepage
10:42:05 DEBUG| [stdout] [ 6044.946761] [c000200daa853b50] [c00000000054a9a8] fat_writepages+
10:42:05 DEBUG| [stdout] [ 6044.946764] [c000200daa853b70] [c0000000002f5ddc] do_writepages+
10:42:05 DEBUG| [stdout] [ 6044.946767] [c000200daa853be0] [c0000000002e06e8] __filemap_
10:42:05 DEBUG| [stdout] [ 6044.946770] [c000200daa853c80] [c0000000002e0a18] file_write_
10:42:05 DEBUG| [stdout] [ 6044.946773] [c000200daa853cd0] [c000000000416b10] __generic_
10:42:05 DEBUG| [stdout] [ 6044.946776] [c000200daa853d20] [c000000000416c6c] generic_
10:42:05 DEBUG| [stdout] [ 6044.946779] [c000200daa853d50] [c000000000548eb0] fat_file_
10:42:05 DEBUG| [stdout] [ 6044.946782] [c000200daa853d80] [c000000000426288] vfs_fsync_
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_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.946948] [c000200daa843910] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.946951] [c000200daa8439e0] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.946954] [c000200daa843a00] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.946956] [c000200daa843a30] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.946959] [c000200daa843ad0] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.946962] [c000200daa843b70] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.946964] [c000200daa843be0] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.946968] [c000200daa843c90] [c000000000676ad4] submit_
10:42:05 DEBUG| [stdout] [ 6044.946970] [c000200daa843ce0] [c00000000068bed4] blkdev_
10:42:05 DEBUG| [stdout] [ 6044.946973] [c000200daa843d20] [c000000000416c8c] generic_
10:42:05 DEBUG| [stdout] [ 6044.946976] [c000200daa843d50] [c000000000548eb0] fat_file_
10:42:05 DEBUG| [stdout] [ 6044.946978] [c000200daa843d80] [c000000000426288] vfs_fsync_
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_
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/
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_
10:42:05 DEBUG| [stdout] [ 6044.947130] [c000200daa87f910] [c000000000cfcae4] __schedule+
10:42:05 DEBUG| [stdout] [ 6044.947133] [c000200daa87f9e0] [c000000000cfd370] schedule+0x40/0xc0
10:42:05 DEBUG| [stdout] [ 6044.947136] [c000200daa87fa00] [c000000000152d9c] io_schedule+
10:42:05 DEBUG| [stdout] [ 6044.947138] [c000200daa87fa30] [c0000000006d1804] wbt_wait+
10:42:05 DEBUG| [stdout] [ 6044.947141] [c000200daa87fad0] [c000000000698924] blk_mq_
10:42:05 DEBUG| [stdout] [ 6044.947144] [c000200daa87fb70] [c000000000686594] generic_
10:42:05 DEBUG| [stdout] [ 6044.947147] [c000200daa87fbe0] [c0000000006868ac] submit_
10:42:05 DEBUG| [stdout] [ 6044.947150] [c000200daa87fc90] [c000000000676ad4] submit_
10:42:05 DEBUG| [stdout] [ 6044.947152] [c000200daa87fce0] [c00000000068bed4] blkdev_
10:42:05 DEBUG| [stdout] [ 6044.947155] [c000200daa87fd20] [c000000000416c8c] generic_
10:42:05 DEBUG| [stdout] [ 6044.947158] [c000200daa87fd50] [c000000000548eb0] fat_file_
10:42:05 DEBUG| [stdout] [ 6044.947161] [c000200daa87fd80] [c000000000426288] vfs_fsync_
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_
=======
It was also triggered on ADT with kernel 4.15.0-38-generic (but not with 4.15.0-36)
https:/
This has not yet been observed in other architectures.
How to reproduce:
Clone autotest and autotest-
$ AUTOTEST_
Changed in linux (Ubuntu Bionic): | |
status: | New → Confirmed |
tags: | added: ubuntu-vfat-stress |
Changed in linux (Ubuntu): | |
assignee: | nobody → Colin Ian King (colin-king) |
Changed in linux (Ubuntu Bionic): | |
assignee: | nobody → Colin Ian King (colin-king) |
Changed in ubuntu-kernel-tests: | |
status: | New → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1798574
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.