INFO: task kworker/u8:2:44 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2    state:D stack:21544 pid:44    tgid:44    ppid:2      task_flags:0x4248060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 rq_qos_wait+0x266/0x360 block/blk-rq-qos.c:307
 __wbt_wait block/blk-wbt.c:598 [inline]
 wbt_wait+0x326/0x550 block/blk-wbt.c:658
 __rq_qos_throttle+0x6b/0xb0 block/blk-rq-qos.c:66
 rq_qos_throttle block/blk-rq-qos.h:164 [inline]
 blk_mq_get_new_requests block/blk-mq.c:3032 [inline]
 blk_mq_submit_bio+0x1512/0x2a70 block/blk-mq.c:3170
 __submit_bio_noacct_mq block/blk-core.c:756 [inline]
 submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:790
 blk_crypto_submit_bio include/linux/blk-crypto.h:212 [inline]
 ext4_io_submit fs/ext4/page-io.c:396 [inline]
 io_submit_add_bh fs/ext4/page-io.c:452 [inline]
 ext4_bio_write_folio+0x101a/0x18c0 fs/ext4/page-io.c:547
 mpage_process_page_bufs+0x6bd/0x8a0 fs/ext4/inode.c:2201
 mpage_prepare_extent_to_map+0xf8d/0x1880 fs/ext4/inode.c:2743
 ext4_do_writepages+0xb8a/0x4770 fs/ext4/inode.c:2884
 ext4_writepages+0x1fe/0x4e0 fs/ext4/inode.c:3032
 do_writepages+0x338/0x560 mm/page-writeback.c:2560
 __writeback_single_inode+0x136/0x1220 fs/fs-writeback.c:1788
 writeback_sb_inodes+0x9de/0x1af0 fs/fs-writeback.c:2099
 __writeback_inodes_wb+0x114/0x240 fs/fs-writeback.c:2175
 wb_writeback+0x42f/0xad0 fs/fs-writeback.c:2286
 wb_check_old_data_flush fs/fs-writeback.c:2390 [inline]
 wb_do_writeback fs/fs-writeback.c:2469 [inline]
 wb_workfn+0xc92/0x10f0 fs/fs-writeback.c:2497
 process_one_work kernel/workqueue.c:3407 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3490
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3571
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task jbd2/sda1-8:4947 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8     state:D stack:25136 pid:4947  tgid:4947  ppid:2      task_flags:0x240040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_buffer include/linux/buffer_head.h:444 [inline]
 jbd2_journal_commit_transaction+0x2f6e/0x5c80 fs/jbd2/commit.c:834
 kjournald2+0x3bc/0x740 fs/jbd2/journal.c:200
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task syz-executor:5606 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21960 pid:5606  tgid:5606  ppid:5605   task_flags:0x440100 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit_io include/linux/wait_bit.h:106 [inline]
 do_get_write_access+0x658/0x10c0 fs/jbd2/transaction.c:1113
 jbd2_journal_get_write_access+0x1d7/0x230 fs/jbd2/transaction.c:1263
 __ext4_journal_get_write_access+0xec/0x620 fs/ext4/ext4_jbd2.c:249
 ext4_reserve_inode_write+0x294/0x360 fs/ext4/inode.c:6514
 __ext4_mark_inode_dirty+0x141/0x7b0 fs/ext4/inode.c:6699
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6736
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2729
 generic_update_time fs/inode.c:2254 [inline]
 file_update_time_flags+0x399/0x440 fs/inode.c:2484
 ext4_page_mkwrite+0x21f/0x12c0 fs/ext4/inode.c:6902
 do_page_mkwrite+0x147/0x310 mm/memory.c:3779
 wp_page_shared mm/memory.c:4180 [inline]
 do_wp_page+0x1a97/0x4b70 mm/memory.c:4403
 handle_pte_fault mm/memory.c:6551 [inline]
 __handle_mm_fault mm/memory.c:6676 [inline]
 handle_mm_fault+0x15d7/0x3750 mm/memory.c:6843
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f6bfec7c6e2
RSP: 002b:00007ffd838ad150 EFLAGS: 00010202
RAX: 00007f6bfcd94000 RBX: 0000555557f1e590 RCX: 0000000000000005
RDX: 0000000000003eed RSI: 0000555557f152e8 RDI: 0000000000000020
RBP: 00007ffd838ad650 R08: 0000555557f15328 R09: 00000000000000a4
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd838ad490
R13: 00007ffd838ad280 R14: 585858582e7a7973 R15: 00007ffd838ad1d0
 </TASK>
INFO: task syz.2.525:7273 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.525       state:D stack:25608 pid:7273  tgid:7273  ppid:5634   task_flags:0x440040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit_io include/linux/wait_bit.h:106 [inline]
 do_get_write_access+0x658/0x10c0 fs/jbd2/transaction.c:1113
 jbd2_journal_get_write_access+0x1d7/0x230 fs/jbd2/transaction.c:1263
 __ext4_journal_get_write_access+0xec/0x620 fs/ext4/ext4_jbd2.c:249
 ext4_reserve_inode_write+0x294/0x360 fs/ext4/inode.c:6514
 __ext4_mark_inode_dirty+0x141/0x7b0 fs/ext4/inode.c:6699
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6736
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2729
 generic_update_time fs/inode.c:2254 [inline]
 file_update_time_flags+0x399/0x440 fs/inode.c:2484
 ext4_page_mkwrite+0x21f/0x12c0 fs/ext4/inode.c:6902
 do_page_mkwrite+0x147/0x310 mm/memory.c:3779
 do_shared_fault mm/memory.c:6045 [inline]
 do_fault mm/memory.c:6107 [inline]
 do_pte_missing+0x757/0x34b0 mm/memory.c:4663
 handle_pte_fault mm/memory.c:6527 [inline]
 __handle_mm_fault mm/memory.c:6676 [inline]
 handle_mm_fault+0x1a53/0x3750 mm/memory.c:6843
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f5a4e672f32
RSP: 002b:00007fff69d0cc00 EFLAGS: 00010202
RAX: 0000000000003008 RBX: 00007f5a4f555720 RCX: 0000000000000000
RDX: 0000001b34121000 RSI: 0000000000000008 RDI: 00007f5a4f555720
RBP: 0000000000000666 R08: 00007f5a4ea10000 R09: 00007f5a4ea26038
R10: 0000000000000003 R11: 0000000000000003 R12: ffffffff8be4da08
R13: 00007f5a4ea26038 R14: 0000000000000053 R15: ffffffffffffd000
 </TASK>
INFO: task syz.0.528:7276 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.528       state:D stack:25608 pid:7276  tgid:7276  ppid:5620   task_flags:0x440040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit_io include/linux/wait_bit.h:106 [inline]
 do_get_write_access+0x658/0x10c0 fs/jbd2/transaction.c:1113
 jbd2_journal_get_write_access+0x1d7/0x230 fs/jbd2/transaction.c:1263
 __ext4_journal_get_write_access+0xec/0x620 fs/ext4/ext4_jbd2.c:249
 ext4_reserve_inode_write+0x294/0x360 fs/ext4/inode.c:6514
 __ext4_mark_inode_dirty+0x141/0x7b0 fs/ext4/inode.c:6699
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6736
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2729
 generic_update_time fs/inode.c:2254 [inline]
 file_update_time_flags+0x399/0x440 fs/inode.c:2484
 ext4_page_mkwrite+0x21f/0x12c0 fs/ext4/inode.c:6902
 do_page_mkwrite+0x147/0x310 mm/memory.c:3779
 do_shared_fault mm/memory.c:6045 [inline]
 do_fault mm/memory.c:6107 [inline]
 do_pte_missing+0x757/0x34b0 mm/memory.c:4663
 handle_pte_fault mm/memory.c:6527 [inline]
 __handle_mm_fault mm/memory.c:6676 [inline]
 handle_mm_fault+0x1a53/0x3750 mm/memory.c:6843
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7fca90a727a9
RSP: 002b:00007ffd167b8300 EFLAGS: 00010202
RAX: 0000001b33f24000 RBX: ffffffff824b16ca RCX: 0000001b33f23ff8
RDX: 00000000005ffde8 RSI: 00000000005ffde8 RDI: 00007fca91955700
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007fca90e12000
R10: 00007fca91955700 R11: 0000000000000000 R12: 00007fca90e26038
R13: 0000000000000000 R14: ffffffff824b1fa0 R15: 00007fca91955720
 </TASK>
INFO: task syz.4.527:7277 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.527       state:D stack:25608 pid:7277  tgid:7277  ppid:5625   task_flags:0x440040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit_io include/linux/wait_bit.h:106 [inline]
 do_get_write_access+0x658/0x10c0 fs/jbd2/transaction.c:1113
 jbd2_journal_get_write_access+0x1d7/0x230 fs/jbd2/transaction.c:1263
 __ext4_journal_get_write_access+0xec/0x620 fs/ext4/ext4_jbd2.c:249
 ext4_reserve_inode_write+0x294/0x360 fs/ext4/inode.c:6514
 __ext4_mark_inode_dirty+0x141/0x7b0 fs/ext4/inode.c:6699
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6736
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2729
 generic_update_time fs/inode.c:2254 [inline]
 file_update_time_flags+0x399/0x440 fs/inode.c:2484
 ext4_page_mkwrite+0x21f/0x12c0 fs/ext4/inode.c:6902
 do_page_mkwrite+0x147/0x310 mm/memory.c:3779
 do_shared_fault mm/memory.c:6045 [inline]
 do_fault mm/memory.c:6107 [inline]
 do_pte_missing+0x757/0x34b0 mm/memory.c:4663
 handle_pte_fault mm/memory.c:6527 [inline]
 __handle_mm_fault mm/memory.c:6676 [inline]
 handle_mm_fault+0x1a53/0x3750 mm/memory.c:6843
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7ffac8e72809
RSP: 002b:00007fff3b96b0f0 EFLAGS: 00010202
RAX: 0000001b34124000 RBX: 0000000000000000 RCX: 00000000003ffde8
RDX: 0000001b34123ffc RSI: 00000000003ffde8 RDI: 00007ffac9d55700
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffac9212000
R10: 00007ffac9d55700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000ce5 R14: ffffffff816d5ede R15: 00007ffac9d55720
 </TASK>
INFO: task syz.1.526:7280 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.526       state:D stack:24648 pid:7280  tgid:7280  ppid:5621   task_flags:0x440040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit_io include/linux/wait_bit.h:106 [inline]
 do_get_write_access+0x658/0x10c0 fs/jbd2/transaction.c:1113
 jbd2_journal_get_write_access+0x1d7/0x230 fs/jbd2/transaction.c:1263
 __ext4_journal_get_write_access+0xec/0x620 fs/ext4/ext4_jbd2.c:249
 ext4_reserve_inode_write+0x294/0x360 fs/ext4/inode.c:6514
 __ext4_mark_inode_dirty+0x141/0x7b0 fs/ext4/inode.c:6699
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6736
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2729
 generic_update_time fs/inode.c:2254 [inline]
 file_update_time_flags+0x399/0x440 fs/inode.c:2484
 ext4_page_mkwrite+0x21f/0x12c0 fs/ext4/inode.c:6902
 do_page_mkwrite+0x147/0x310 mm/memory.c:3779
 do_shared_fault mm/memory.c:6045 [inline]
 do_fault mm/memory.c:6107 [inline]
 do_pte_missing+0x757/0x34b0 mm/memory.c:4663
 handle_pte_fault mm/memory.c:6527 [inline]
 __handle_mm_fault mm/memory.c:6676 [inline]
 handle_mm_fault+0x1a53/0x3750 mm/memory.c:6843
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f5c0dc72809
RSP: 002b:00007ffefd805d70 EFLAGS: 00010202
RAX: 0000001b34024000 RBX: 0000000000000000 RCX: 00000000005ffde8
RDX: 0000001b34023ffc RSI: 00000000005ffde8 RDI: 00007f5c0eb55700
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f5c0e012000
R10: 00007f5c0eb55700 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000029d R14: ffffffff816d5ede R15: 00007f5c0eb55720
 </TASK>
INFO: task syz.3.523:7282 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.523       state:D stack:27224 pid:7282  tgid:7282  ppid:5622   task_flags:0x440040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5527 [inline]
 __schedule+0x17dd/0x5940 kernel/sched/core.c:7295
 __schedule_loop kernel/sched/core.c:7372 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7387
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8059
 bit_wait_io+0x13/0x110 kernel/sched/wait_bit.c:258
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit_io include/linux/wait_bit.h:106 [inline]
 do_get_write_access+0x658/0x10c0 fs/jbd2/transaction.c:1113
 jbd2_journal_get_write_access+0x1d7/0x230 fs/jbd2/transaction.c:1263
 __ext4_journal_get_write_access+0xec/0x620 fs/ext4/ext4_jbd2.c:249
 ext4_reserve_inode_write+0x294/0x360 fs/ext4/inode.c:6514
 __ext4_mark_inode_dirty+0x141/0x7b0 fs/ext4/inode.c:6699
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6736
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2729
 generic_update_time fs/inode.c:2254 [inline]
 touch_atime+0x568/0x670 fs/inode.c:2329
 file_accessed include/linux/fs.h:2277 [inline]
 ext4_file_mmap_prepare+0x277/0x450 fs/ext4/file.c:901
 vfs_mmap_prepare include/linux/fs.h:2069 [inline]
 call_mmap_prepare mm/vma.c:2792 [inline]
 __mmap_region mm/vma.c:2890 [inline]
 mmap_region+0xe95/0x23a0 mm/vma.c:2991
 do_mmap+0xe0a/0x1300 mm/mmap.c:573
 vm_mmap_pgoff+0x272/0x4e0 mm/util.c:581
 ksys_mmap_pgoff+0x4dc/0x760 mm/mmap.c:619
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f562999dec2
RSP: 002b:00007fff4cf79a88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000001b33c64000 RCX: 00007f562999dec2
RDX: 0000000000000003 RSI: 00000000003c0000 RDI: 0000001b33c64000
RBP: 0000000000100001 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000100001 R11: 0000000000000206 R12: 000000000000006d
R13: 00000000000927c0 R14: 0000000000021a97 R15: 00007fff4cf79d60
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/34: 1, last CPU#1:
 #0: ffffffff8ed5db60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffffffff8ed5db60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8ed5db60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6871
locks held by kworker/u8:2/44: 4, on CPU#0:
 #0: ffff8880202df940 ((wq_completion)writeback){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff8880202df940 ((wq_completion)writeback){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff8880202df940 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline]
 #0: ffff8880202df940 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3490
 #1: ffffc90000b47c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc90000b47c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc90000b47c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3372 [inline]
 #1: ffffc90000b47c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3490
 #2: ffff8880367380e8 (&type->s_umount_key#34){++++}-{4:4}, at: super_trylock_shared+0x23/0xf0 fs/super.c:674
 #3: ffff888036746c98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x1f1/0x4e0 fs/ext4/inode.c:3031
locks held by getty/5376: 2, on CPU#1:
 #0: ffff88803645d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000322b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211
locks held by syz-executor/5606: 3, on CPU#0:
 #0: ffff88802a8d4948 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:309
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs/super.h:159 [inline]
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1fd/0x12c0 fs/ext4/inode.c:6901
 #2: ffff888036744938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1fb0/0x21f0 fs/jbd2/transaction.c:444
locks held by syz.2.525/7273: 3, on CPU#0:
 #0: ffff88807516ca88 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:309
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs/super.h:159 [inline]
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1fd/0x12c0 fs/ext4/inode.c:6901
 #2: ffff888036744938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1fb0/0x21f0 fs/jbd2/transaction.c:444
locks held by syz.0.528/7276: 3, on CPU#1:
 #0: ffff88807dcf7088 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:309
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs/super.h:159 [inline]
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1fd/0x12c0 fs/ext4/inode.c:6901
 #2: ffff888036744938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1fb0/0x21f0 fs/jbd2/transaction.c:444
locks held by syz.4.527/7277: 3, on CPU#1:
 #0: ffff8880744c8308 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:309
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs/super.h:159 [inline]
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1fd/0x12c0 fs/ext4/inode.c:6901
 #2: ffff888036744938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1fb0/0x21f0 fs/jbd2/transaction.c:444
locks held by syz.1.526/7280: 3, on CPU#0:
 #0: ffff888076571d08 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:309
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs/super.h:159 [inline]
 #1: ffff888036738558 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1fd/0x12c0 fs/ext4/inode.c:6901
 #2: ffff888036744938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1fb0/0x21f0 fs/jbd2/transaction.c:444
locks held by syz.3.523/7282: 3, on CPU#0:
 #0: ffff88807f78b6b8 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:548 [inline]
 #0: ffff88807f78b6b8 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1dd/0x4e0 mm/util.c:579
 #1: ffff888036738460 (sb_writers#4){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2277 [inline]
 #1: ffff888036738460 (sb_writers#4){.+.+}-{0:0}, at: ext4_file_mmap_prepare+0x277/0x450 fs/ext4/file.c:901
 #2: ffff888036744938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1fb0/0x21f0 fs/jbd2/transaction.c:444

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:377 [inline]
 watchdog+0x1058/0x10d0 kernel/hung_task.c:598
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 3c 8c 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 13 a1 20 00 fb f4 <e9> 4c 10 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8ea07ca0 EFLAGS: 00000246
RAX: 00000000001d5a93 RBX: ffffffff819c0490 RCX: 8000000000000001
RDX: 0000000000000001 RSI: ffffffff8e47d8da RDI: ffffffff8c6dc080
RBP: ffffffff8ea07d78 R08: ffff8880b8633a1b R09: 1ffff110170c6743
R10: dffffc0000000000 R11: ffffed10170c6744 R12: 0000000000000000
R13: 1ffffffff1d51df8 R14: 1ffffffff1d40f9c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888124cb7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055aec7c78168 CR3: 000000000eb48000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/kernel/process.c:767 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:768
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x2e0/0x540 kernel/sched/idle.c:355
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 rest_init+0x378/0x3a0 init/main.c:727
 start_kernel+0x392/0x3e0 init/main.c:1185
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157
 </TASK>