syzbot


INFO: task hung in f2fs_balance_fs

Status: upstream: reported C repro on 2022/10/18 13:55
Subsystems: f2fs
[Documentation on labels]
Reported-by: syzbot+873005aface00874a914@syzkaller.appspotmail.com
First crash: 613d, last: 473d
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in f2fs_balance_fs (2) 2 208d 229d 0/3 auto-obsoleted due to no activity on 2024/03/06 18:04
linux-6.1 INFO: task hung in f2fs_balance_fs (3) origin:lts-only C done 53 11d 87d 0/3 upstream: reported C repro on 2024/03/27 06:53
linux-4.14 INFO: task hung in f2fs_balance_fs 3 582d 609d 0/1 auto-obsoleted due to no activity on 2023/03/18 03:56
upstream INFO: task hung in f2fs_balance_fs f2fs C done inconclusive 482 3d13h 465d 0/27 upstream: reported C repro on 2023/03/15 03:28
linux-6.1 INFO: task hung in f2fs_balance_fs 20 409d 472d 0/3 auto-obsoleted due to no activity on 2023/08/22 15:19
linux-5.15 INFO: task hung in f2fs_balance_fs origin:upstream C 89 1d13h 472d 0/3 upstream: reported C repro on 2023/03/08 13:34

Sample crash report:
syz-executor280[10257]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14
Code: Bad RIP value.
syz-executor280[10263]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14
Code: Bad RIP value.
INFO: task kworker/u4:2:8317 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:2    D26864  8317      2 0x80000000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1016 [inline]
 __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
 f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512
 f2fs_write_inode+0x500/0x600 fs/f2fs/inode.c:630
 write_inode fs/fs-writeback.c:1244 [inline]
 __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
 __writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1716
 wb_writeback+0x841/0xcc0 fs/fs-writeback.c:1822
 wb_check_old_data_flush fs/fs-writeback.c:1924 [inline]
 wb_do_writeback fs/fs-writeback.c:1977 [inline]
 wb_workfn+0x8ba/0x1250 fs/fs-writeback.c:2006
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Showing all locks held in the system:
1 lock held by khungtaskd/1571:
 #0: 00000000829e72c7 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7853:
 #0: 000000009f998f2f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by syz-executor280/8149:
4 locks held by kworker/u4:2/8317:
 #0: 00000000b3c347d9 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 000000002299b0b2 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000003d610b4d (&type->s_umount_key#47){.+.+}, at: trylock_super+0x1d/0x100 fs/super.c:412
 #3: 00000000c0721fe5 (&sbi->gc_mutex){+.+.}, at: f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512
2 locks held by syz-executor280/10264:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10263 Comm: syz-executor280 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:97
Code: ff 48 89 df e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2
RSP: 0018:ffff8880ba107af8 EFLAGS: 00000002
RAX: 0000000080010004 RBX: 0000000000010004 RCX: ffffffff83771e23
RDX: 0000000000010004 RSI: ffff88809c676000 RDI: 0000000000000005
RBP: ffffffff88b3e120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000001
R13: ffffffff88b3e0e0 R14: 000000000001e728 R15: ffff8880b028a640
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e96e00000 CR3: 00000000aad53000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 check_preemption_disabled+0x3c/0x280 lib/smp_processor_id.c:25
 rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1078 [inline]
 rcu_lockdep_current_cpu_online+0xb2/0x1b0 kernel/rcu/tree.c:1068
 rcu_read_lock_held+0xc3/0x110 kernel/rcu/update.c:285
 test_idle_cores kernel/sched/fair.c:6041 [inline]
 select_idle_core kernel/sched/fair.c:6090 [inline]
 select_idle_sibling kernel/sched/fair.c:6241 [inline]
 select_idle_sibling+0x1b1/0xae0 kernel/sched/fair.c:6208
 select_task_rq_fair+0x6df/0x2750 kernel/sched/fair.c:6479
 select_task_rq kernel/sched/core.c:1532 [inline]
 try_to_wake_up+0x4cd/0x1050 kernel/sched/core.c:2037
 hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1713
 __run_hrtimer kernel/time/hrtimer.c:1465 [inline]
 __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1527
 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184
Code: 48 c7 c0 88 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 7c 31 d8 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 fb eb e6 f8 eb c0 0f 0b 0f 0b 48 c7 c7 88
RSP: 0018:ffff8880aa756a48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: 0000000000000286 RCX: 1ffff110138ced15
RDX: dffffc0000000000 RSI: ffff88809c6768b0 RDI: 0000000000000286
RBP: ffff8880ad843bb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000286 R14: 000000000000006c R15: ffff8880ad843be8
 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
 virtscsi_kick_cmd+0xbd/0x120 drivers/scsi/virtio_scsi.c:478
 virtscsi_queuecommand+0x6af/0xf70 drivers/scsi/virtio_scsi.c:569
 scsi_dispatch_cmd+0x394/0xc00 drivers/scsi/scsi_lib.c:1837
 scsi_queue_rq+0x1477/0x1aa0 drivers/scsi/scsi_lib.c:2140
 blk_mq_dispatch_rq_list+0xca7/0x1980 block/blk-mq.c:1203
 blk_mq_do_dispatch_sched+0x187/0x400 block/blk-mq-sched.c:117
 blk_mq_sched_dispatch_requests+0x38c/0x5b0 block/blk-mq-sched.c:213
 __blk_mq_run_hw_queue+0x185/0x290 block/blk-mq.c:1324
 __blk_mq_delay_run_hw_queue+0x4d8/0x5a0 block/blk-mq.c:1392
 blk_mq_run_hw_queue+0x16b/0x2f0 block/blk-mq.c:1429
 blk_mq_sched_insert_requests+0x203/0x2d0 block/blk-mq-sched.c:432
 blk_mq_flush_plug_list+0x6a6/0xb00 block/blk-mq.c:1679
 blk_flush_plug_list+0x2fb/0x8e0 block/blk-core.c:3705
 blk_mq_make_request+0xf10/0x1c00 block/blk-mq.c:1908
 generic_make_request+0x613/0xdf0 block/blk-core.c:2467
 submit_bio+0xb1/0x430 block/blk-core.c:2576
 ext4_io_submit+0x181/0x210 fs/ext4/page-io.c:356
 ext4_writepages+0x17bf/0x37f0 fs/ext4/inode.c:2910
 do_writepages+0xe5/0x290 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
 ext4_alloc_da_blocks+0x207/0x360 fs/ext4/inode.c:3273
 ext4_release_file+0x1ed/0x340 fs/ext4/file.c:89
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xbf3/0x2be0 kernel/exit.c:870
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198
 retint_user+0x8/0x18
RIP: 0033:          (null)
Code: Bad RIP value.
RSP: 002b:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f3e9b3a0599
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000080000
RBP: 00007ffdab407ed0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
R13: 00007ffdab407ec0 R14: 00007ffdab407eb0 R15: 0000000000000003
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.101 msecs

Crashes (199):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/21 06:05 linux-4.19.y 3f8a27f9e27b 2414209c .config console log report syz C [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2022/12/16 12:59 linux-4.19.y 3f8a27f9e27b 6f9c033e .config console log report syz C [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2022/12/10 10:44 linux-4.19.y 3f8a27f9e27b 67be1ae7 .config console log report syz C [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2022/11/14 07:26 linux-4.19.y 3f8a27f9e27b 7ba4d859 .config console log report syz C [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/07 04:24 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/06 19:22 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/06 09:58 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/05 22:36 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/05 18:06 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/05 02:38 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/04 17:11 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/04 02:59 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/03 19:10 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/02 13:30 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/02 02:13 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/01 12:15 linux-4.19.y 3f8a27f9e27b ef65e6cb .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/03/01 04:50 linux-4.19.y 3f8a27f9e27b 95aee97a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/28 15:19 linux-4.19.y 3f8a27f9e27b 95aee97a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/27 05:19 linux-4.19.y 3f8a27f9e27b ee50e71c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/27 01:56 linux-4.19.y 3f8a27f9e27b ee50e71c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/26 15:59 linux-4.19.y 3f8a27f9e27b ee50e71c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/26 07:14 linux-4.19.y 3f8a27f9e27b ee50e71c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/20 13:17 linux-4.19.y 3f8a27f9e27b bcdf85f8 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/20 08:27 linux-4.19.y 3f8a27f9e27b bcdf85f8 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/20 03:21 linux-4.19.y 3f8a27f9e27b bcdf85f8 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/18 18:39 linux-4.19.y 3f8a27f9e27b d02e9a70 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/18 07:34 linux-4.19.y 3f8a27f9e27b d02e9a70 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/16 18:45 linux-4.19.y 3f8a27f9e27b 38b317a7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/14 00:26 linux-4.19.y 3f8a27f9e27b 957959cb .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/13 03:24 linux-4.19.y 3f8a27f9e27b 93e26d60 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/12 20:41 linux-4.19.y 3f8a27f9e27b 93e26d60 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/07 08:19 linux-4.19.y 3f8a27f9e27b 5bc3be51 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/02/05 05:11 linux-4.19.y 3f8a27f9e27b be607b78 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/28 18:54 linux-4.19.y 3f8a27f9e27b 9dfcf09c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/23 02:20 linux-4.19.y 3f8a27f9e27b cc0f9968 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/20 01:45 linux-4.19.y 3f8a27f9e27b 71197f3a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/20 00:32 linux-4.19.y 3f8a27f9e27b 71197f3a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/18 23:01 linux-4.19.y 3f8a27f9e27b 4620c2d9 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/18 18:28 linux-4.19.y 3f8a27f9e27b 4620c2d9 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/17 08:11 linux-4.19.y 3f8a27f9e27b a63719e7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/17 05:17 linux-4.19.y 3f8a27f9e27b a63719e7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/17 02:31 linux-4.19.y 3f8a27f9e27b a63719e7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/16 07:58 linux-4.19.y 3f8a27f9e27b a63719e7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/12 04:45 linux-4.19.y 3f8a27f9e27b 96166539 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/05 21:54 linux-4.19.y 3f8a27f9e27b 1dac8c7a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/04 22:07 linux-4.19.y 3f8a27f9e27b 1dac8c7a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/04 16:28 linux-4.19.y 3f8a27f9e27b 1dac8c7a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/04 05:55 linux-4.19.y 3f8a27f9e27b f0036e18 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/03 11:54 linux-4.19.y 3f8a27f9e27b f0036e18 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/02 18:31 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/02 10:32 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/02 00:25 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2023/01/01 08:28 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
2022/10/18 13:55 linux-4.19.y 3f8a27f9e27b b31320fc .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: task hung in f2fs_balance_fs
* Struck through repros no longer work on HEAD.