INFO: task kworker/u8:3:50 blocked for more than 143 seconds.
Not tainted 6.9.0-rc5-syzkaller-00053-ge33c4963bf53 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D
stack:20912 pid:50 tgid:50 ppid:2 flags:0x00004000
Workqueue: loop3 loop_workfn
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:795 [inline]
shmem_file_write_iter+0x83/0x120 mm/shmem.c:2910
do_iter_readv_writev+0x5a6/0x800
vfs_iter_write+0x244/0x5d0 fs/read_write.c:895
lo_write_bvec drivers/block/loop.c:246 [inline]
lo_write_simple drivers/block/loop.c:267 [inline]
do_req_filebacked drivers/block/loop.c:491 [inline]
loop_handle_cmd drivers/block/loop.c:1907 [inline]
loop_process_work+0x13a3/0x1e60 drivers/block/loop.c:1942
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor.3:6004 blocked for more than 145 seconds.
Not tainted 6.9.0-rc5-syzkaller-00053-ge33c4963bf53 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:15576 pid:6004 tgid:5995 ppid:5312 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
io_schedule+0x8d/0x110 kernel/sched/core.c:9044
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb2/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
__wait_on_buffer fs/buffer.c:123 [inline]
wait_on_buffer include/linux/buffer_head.h:389 [inline]
__sync_dirty_buffer+0x2f7/0x390 fs/buffer.c:2848
ntfs_write_bh+0x5f7/0x7c0 fs/ntfs3/fsntfs.c:1481
mi_write+0x9b/0x1e0 fs/ntfs3/record.c:388
ni_write_inode+0xc99/0x1010 fs/ntfs3/frecord.c:3372
ntfs_set_state+0x52f/0x6c0 fs/ntfs3/fsntfs.c:991
ntfs_sync_fs+0x1ca/0x1f0 fs/ntfs3/super.c:762
sync_filesystem+0xef/0x230 fs/sync.c:56
generic_shutdown_super+0x72/0x2d0 fs/super.c:620
kill_block_super+0x44/0x90 fs/super.c:1675
ntfs3_kill_sb+0x44/0x1b0 fs/ntfs3/super.c:1785
deactivate_locked_super+0xc6/0x130 fs/super.c:472
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267
task_work_run+0x251/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa1b/0x27e0 kernel/exit.c:878
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x16a1/0x1740 kernel/signal.c:2911
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f42a587dea9
RSP: 002b:00007f42a53de0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: fffffffffffffff4 RBX: 00007f42a59ac050 RCX: 00007f42a587dea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f42a58ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f42a59ac050 R15: 00007fff00c60bd8
Showing all locks held in the system:
8 locks held by kworker/0:1/8:
1 lock held by khungtaskd/29:
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
4 locks held by kworker/u8:3/50:
#0: ffff8880229c9148 ((wq_completion)loop3){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff8880229c9148 ((wq_completion)loop3){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc90000ba7d00 ((work_completion)(&worker->work)
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffff888015eda420 (sb_writers#5){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2855 [inline]
#2: ffff888015eda420 (sb_writers#5){.+.+}-{0:0}, at: vfs_iter_write+0x1f6/0x5d0 fs/read_write.c:894
#3: ffff88802cd9b0c0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#3: ffff88802cd9b0c0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x83/0x120 mm/shmem.c:2910
4 locks held by kworker/u8:5/63:
#0: ffff88805b674148 ((wq_completion)loop1){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff88805b674148 ((wq_completion)loop1){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc900015e7d00 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900015e7d00 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffff888015eda420 (sb_writers#5){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2855 [inline]
#2: ffff888015eda420 (sb_writers#5){.+.+}-{0:0}, at: vfs_iter_write+0x1f6/0x5d0 fs/read_write.c:894
#3: ffff888053f6ebd0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#3: ffff888053f6ebd0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x83/0x120 mm/shmem.c:2910
3 locks held by kswapd0/90:
2 locks held by kswapd1/91:
3 locks held by kworker/1:1H/100:
#0: ffff8880162ca548 ((wq_completion)kblockd){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff8880162ca548 ((wq_completion)kblockd){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc900020afd00 ((work_completion)(&q->timeout_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900020afd00 ((work_completion)(&q->timeout_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffffffff8e33a0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#2: ffffffff8e33a0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
4 locks held by kworker/u8:6/148:
#0: ffff8880229c9148 ((wq_completion)loop3){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff8880229c9148 ((wq_completion)loop3){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc90002dc7d00 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90002dc7d00 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffff888015eda420 (sb_writers#5){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2855 [inline]
#2: ffff888015eda420 (sb_writers#5){.+.+}-{0:0}, at: vfs_iter_write+0x1f6/0x5d0 fs/read_write.c:894
#3: ffff88802cd9b0c0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#3: ffff88802cd9b0c0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x83/0x120 mm/shmem.c:2910
2 locks held by kworker/0:3/929:
2 locks held by getty/4839:
#0: ffff88802ac360a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by sshd/5072:
#0: ffff88801eaaf3a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff88801eaaf3a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5633 [inline]
#0: ffff88801eaaf3a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5693
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3771 [inline]
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline]
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd31/0x23d0 mm/page_alloc.c:4202
2 locks held by syz-fuzzer/5075:
#0: ffff88801ce9e4a8 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:677 [inline]
#0: ffff88801ce9e4a8 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x730 mm/memory.c:5762
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3771 [inline]
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline]
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd31/0x23d0 mm/page_alloc.c:4202
2 locks held by syz-fuzzer/5089:
#0: ffff8880112f23a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline]
#0: ffff8880112f23a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0xaf0/0x16a0 mm/filemap.c:3296
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3771 [inline]
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline]
#1: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd31/0x23d0 mm/page_alloc.c:4202
2 locks held by syz-fuzzer/5095:
#0: ffff8880112f23a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline]
#0: ffff8880112f23a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0xaf0/0x16a0 mm/filemap.c:3296
#1:
ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3771 [inline]
ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline]
ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd31/0x23d0 mm/page_alloc.c:4202
4 locks held by kworker/u9:3/5102:
#0: ffff888024cc5948 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888024cc5948 ((wq_completion)hci6){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc90003077d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90003077d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffff888197cc1060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309
#3: ffff888197cc0078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x1ea/0xde0 net/bluetooth/hci_sync.c:5548
4 locks held by kworker/u9:4/5106:
#0: ffff88805d9f9148 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff88805d9f9148 ((wq_completion)hci2){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc90003047d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90003047d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffff88819a399060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309
#3: ffff88819a398078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x1ea/0xde0 net/bluetooth/hci_sync.c:5548
2 locks held by kworker/u8:8/5414:
#0: ffff8880b953e698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by kworker/u8:10/5658:
2 locks held by syz-executor.3/6004:
#0: ffff88806a0080e0 (&type->s_umount_key#66){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88806a0080e0 (&type->s_umount_key#66){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88806a0080e0 (&type->s_umount_key#66){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:504
#1: ffff88805bc70fc0 (&ni->ni_lock#3){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1141 [inline]
#1: ffff88805bc70fc0 (&ni->ni_lock#3){+.+.}-{3:3}, at: ni_write_inode+0x1bc/0x1010 fs/ntfs3/frecord.c:3265
3 locks held by syz-executor.1/6127:
#0: ffff88802e89b1e8 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_cleanup_begin kernel/futex/core.c:1091 [inline]
#0: ffff88802e89b1e8 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x34/0x1f0 kernel/futex/core.c:1143
#1: ffff88802bea3120 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff88802bea3120 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5633 [inline]
#1: ffff88802bea3120 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5693
#2: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3771 [inline]
#2: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline]
#2: ffffffff8e42a800 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd31/0x23d0 mm/page_alloc.c:4202
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc5-syzkaller-00053-ge33c4963bf53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-syzkaller-00053-ge33c4963bf53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: 0x0 (events_unbound)
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:235 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:304
Code: 44 0a 20 e9 85 3b 1a 0a 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 14 25 c0 d3 03 00 65 8b 05 10 ce 6d 7e a9 00 01 ff 00 74
RSP: 0018:ffffc90000aa7b18 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff8880186cbc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff11002a12402 R08: ffffffff81610e99 R09: 1ffff11028000610
R10: dffffc0000000000 R11: ffffed1028000611 R12: dffffc0000000000
R13: ffff888015092000 R14: ffff888015092014 R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555859f7760 CR3: 000000000e134000 CR4: 0000000000350ef0
Call Trace:
put_pwq kernel/workqueue.c:1635 [inline]
pwq_dec_nr_in_flight+0x9d9/0xd60 kernel/workqueue.c:2039
process_one_work kernel/workqueue.c:3309 [inline]
process_scheduled_works+0xee5/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244