INFO: task kworker/u4:0:10 blocked for more than 143 seconds.
Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:0 state:D stack:22880 pid:10 tgid:10 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:1)
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
write_inode fs/fs-writeback.c:1473 [inline]
__writeback_single_inode+0xa91/0xe90 fs/fs-writeback.c:1690
writeback_sb_inodes+0x599/0x1080 fs/fs-writeback.c:1916
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1987
wb_writeback+0x7f8/0xaa0 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0x87c/0xfe0 fs/fs-writeback.c:2279
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task kworker/u4:1:11 blocked for more than 144 seconds.
Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1 state:D stack:25024 pid:11 tgid:11 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:4)
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
write_inode fs/fs-writeback.c:1473 [inline]
__writeback_single_inode+0xa91/0xe90 fs/fs-writeback.c:1690
writeback_sb_inodes+0x599/0x1080 fs/fs-writeback.c:1916
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1987
wb_writeback+0x7f8/0xaa0 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0x87c/0xfe0 fs/fs-writeback.c:2279
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task kworker/u4:2:38 blocked for more than 146 seconds.
Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:22976 pid:38 tgid:38 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:5)
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
write_inode fs/fs-writeback.c:1473 [inline]
__writeback_single_inode+0xa91/0xe90 fs/fs-writeback.c:1690
writeback_sb_inodes+0x599/0x1080 fs/fs-writeback.c:1916
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1987
wb_writeback+0x7f8/0xaa0 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0x87c/0xfe0 fs/fs-writeback.c:2279
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task kworker/u4:3:47 blocked for more than 148 seconds.
Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:3 state:D stack:25776 pid:47 tgid:47 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:3)
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
write_inode fs/fs-writeback.c:1473 [inline]
__writeback_single_inode+0xa91/0xe90 fs/fs-writeback.c:1690
writeback_sb_inodes+0x599/0x1080 fs/fs-writeback.c:1916
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1987
wb_writeback+0x7f8/0xaa0 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0x87c/0xfe0 fs/fs-writeback.c:2279
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task kworker/u4:5:141 blocked for more than 149 seconds.
Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5 state:D stack:24944 pid:141 tgid:141 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:2)
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
write_inode fs/fs-writeback.c:1473 [inline]
__writeback_single_inode+0xa91/0xe90 fs/fs-writeback.c:1690
writeback_sb_inodes+0x599/0x1080 fs/fs-writeback.c:1916
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1987
wb_writeback+0x7f8/0xaa0 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0x87c/0xfe0 fs/fs-writeback.c:2279
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task kworker/u4:8:3485 blocked for more than 151 seconds.
Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:8 state:D stack:26960 pid:3485 tgid:3485 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
write_inode fs/fs-writeback.c:1473 [inline]
__writeback_single_inode+0xa91/0xe90 fs/fs-writeback.c:1690
writeback_sb_inodes+0x599/0x1080 fs/fs-writeback.c:1916
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1987
wb_writeback+0x7f8/0xaa0 fs/fs-writeback.c:2094
wb_check_background_flush fs/fs-writeback.c:2164 [inline]
wb_do_writeback fs/fs-writeback.c:2252 [inline]
wb_workfn+0x87c/0xfe0 fs/fs-writeback.c:2279
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Showing all locks held in the system:
4 locks held by kworker/u4:0/10:
#0: ffff888144257538 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2605
#1: ffffc9000030fd80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2606
#2: ffff888029d540e0 (&type->s_umount_key#68){++++}-{3:3}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:610
#3: ffff8880665c00e0 (&sbi->s_lock){+.+.}-{3:3}, at: exfat_write_inode+0x6c/0x130 fs/exfat/inode.c:96
4 locks held by kworker/u4:1/11:
#0: ffff888144257538 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2605
#1: ffffc9000031fd80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2606
#2: ffff8880265ea0e0 (&type->s_umount_key#68){++++}-{3:3}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:610