INFO: task jbd2/sda1-8:5170 blocked for more than 143 seconds.
      Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8     state:D stack:26176 pid:5170  tgid:5170  ppid:2      task_flags:0x240040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 io_schedule+0xbf/0x130 kernel/sched/core.c:7689
 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 __wait_on_buffer+0x64/0x70 fs/buffer.c:123
 wait_on_buffer include/linux/buffer_head.h:414 [inline]
 jbd2_journal_commit_transaction+0x3823/0x6760 fs/jbd2/commit.c:810
 kjournald2+0x1f8/0x760 fs/jbd2/journal.c:201
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz-executor:5820 blocked for more than 143 seconds.
      Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23376 pid:5820  tgid:5820  ppid:5818   task_flags:0x440100 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 io_schedule+0xbf/0x130 kernel/sched/core.c:7689
 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
 __ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
 __mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
 generic_update_time+0xcf/0xf0 fs/inode.c:2112
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x17d/0x1c0 fs/inode.c:2383
 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
 do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 wp_page_shared mm/memory.c:3645 [inline]
 do_wp_page+0xc0f/0x4560 mm/memory.c:3795
 handle_pte_fault mm/memory.c:5905 [inline]
 __handle_mm_fault+0x1c7c/0x2c60 mm/memory.c:6032
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f7733e7623f
RSP: 002b:00007fff5d7bab70 EFLAGS: 00010202
RAX: 00007f77323f8000 RBX: 0000555581af6bd0 RCX: 0000000000000002
RDX: 1ffffffff0305df2 RSI: 0000555581b050f8 RDI: 0000000000000004
RBP: 00007fff5d7bae60 R08: 0000555581b050f8 R09: 0000000000000bbe
R10: 0000000000000001 R11: 00007fff5d7bb070 R12: 00007fff5d7baec0
R13: 0000000000000004 R14: 00007fff5d7babe0 R15: 00007fff5d7bacb0
 </TASK>
INFO: task syz.3.7064:31076 blocked for more than 144 seconds.
      Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.7064      state:D stack:26048 pid:31076 tgid:31076 ppid:29028  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 io_schedule+0xbf/0x130 kernel/sched/core.c:7689
 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
 __ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
 __mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
 generic_update_time+0xcf/0xf0 fs/inode.c:2112
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x17d/0x1c0 fs/inode.c:2383
 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
 do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 do_shared_fault mm/memory.c:5468 [inline]
 do_fault mm/memory.c:5530 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4047
 handle_pte_fault mm/memory.c:5889 [inline]
 __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f5ae346d11a
RSP: 002b:00007ffd16c4a3d0 EFLAGS: 00010202
RAX: 0000001b312f4000 RBX: 00007f5ae42d5720 RCX: 0000001b312f3ff8
RDX: 0000001b30d20220 RSI: 0000000000000008 RDI: 00007f5ae42d5720
RBP: ffffffff81ef271c R08: 00007f5ae37a61f8 R09: 00007f5ae3792000
R10: 00007f5ae23fb008 R11: 0000000000000009 R12: 0000000000000009
R13: 0000000000000183 R14: ffffffff81ef2066 R15: 00000000000001e7
 </TASK>
INFO: task syz.7.7068:31092 blocked for more than 144 seconds.
      Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.7068      state:D stack:28368 pid:31092 tgid:31092 ppid:18290  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 io_schedule+0xbf/0x130 kernel/sched/core.c:7689
 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
 __ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
 __mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
 generic_update_time+0xcf/0xf0 fs/inode.c:2112
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x17d/0x1c0 fs/inode.c:2383
 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
 do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 do_shared_fault mm/memory.c:5468 [inline]
 do_fault mm/memory.c:5530 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4047
 handle_pte_fault mm/memory.c:5889 [inline]
 __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fbed1e63c52
RSP: 002b:00007ffcc7805d80 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b32920000 RSI: 0000000000040000 RDI: 00007fbed20967b0
RBP: 0000000000000000 R08: 000000000000000a R09: 00007ffcc7805ac4
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000101300 R15: 00007ffcc7806040
 </TASK>
INFO: task syz.0.7069:31093 blocked for more than 144 seconds.
      Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.7069      state:D stack:28368 pid:31093 tgid:31093 ppid:26154  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 io_schedule+0xbf/0x130 kernel/sched/core.c:7689
 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
 __ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
 __mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
 generic_update_time+0xcf/0xf0 fs/inode.c:2112
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x17d/0x1c0 fs/inode.c:2383
 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
 do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 do_shared_fault mm/memory.c:5468 [inline]
 do_fault mm/memory.c:5530 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4047
 handle_pte_fault mm/memory.c:5889 [inline]
 __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fbe59a63c52
RSP: 002b:00007ffc79e20ab0 EFLAGS: 00010246
RAX: 00000000003ffde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2d720000 RSI: 0000000000400000 RDI: 00007fbe59c967b0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 00000000001012ba R15: 00007ffc79e20d70
 </TASK>
INFO: task syz.1.7070:31098 blocked for more than 145 seconds.
      Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.7070      state:D stack:27000 pid:31098 tgid:31098 ppid:26305  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 io_schedule+0xbf/0x130 kernel/sched/core.c:7689
 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:105 [inline]
 do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
 __ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
 __mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
 generic_update_time+0xcf/0xf0 fs/inode.c:2112
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x17d/0x1c0 fs/inode.c:2383
 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
 do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 do_shared_fault mm/memory.c:5468 [inline]
 do_fault mm/memory.c:5530 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4047
 handle_pte_fault mm/memory.c:5889 [inline]
 __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f84d5663c52
RSP: 002b:00007ffe88ce84b0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2f320000 RSI: 0000000000040000 RDI: 00007f84d58967b0
RBP: 0000000000000000 R08: 000000000000000a R09: 00007ffe88ce81f4
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000101578 R15: 00007ffe88ce8770
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
3 locks held by syz-executor/5820:
 #0: ffff888027ed5808 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff888027ed5808 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
 #1: ffff8880348c2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 #2: ffff8880348c6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by getty/15331:
 #0: ffff88803137e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900035ed2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
2 locks held by kworker/u9:1/16208:
 #0: ffff888025895148 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
 #1: ffffc900049dfd18 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
3 locks held by syz.3.7064/31076:
 #0: ffff88802fca0c40 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff88802fca0c40 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
 #1: ffff8880348c2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 #2: ffff8880348c6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.7.7068/31092:
 #0: ffff88806a3a8808 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff88806a3a8808 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
 #1: ffff8880348c2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 #2: ffff8880348c6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.0.7069/31093:
 #0: ffff888063a84730 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff888063a84730 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
 #1: ffff8880348c2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 #2: ffff8880348c6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.1.7070/31098:
 #0: ffff888065d07c40 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff888065d07c40 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
 #1: ffff8880348c2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
 #2: ffff8880348c6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
 watchdog+0xf62/0x12b0 kernel/hung_task.c:399
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 16162 Comm: kworker/u8:52 Tainted: G     U             6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:should_fail_ex+0x0/0x650 lib/fault-inject.c:125
Code: 98 eb c9 e8 a2 f7 5b 06 e8 cd 89 31 fd eb b3 66 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 <66> 0f 1f 00 41 57 41 56 41 55 41 54 41 89 d4 55 48 89 f5 53 48 89
RSP: 0018:ffffc90004b4fa60 EFLAGS: 00000246
RAX: 0000000000000007 RBX: ffff888140ebf8c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000f0 RDI: ffffffff8e37e240
RBP: ffffc90004b4fad8 R08: 0000000000000005 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000002b9f R12: 0000000000000820
R13: 00000000ffffffff R14: ffff888140ebf8c0 R15: ffff888140ebf8c0
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558bbe104e88 CR3: 000000000df80000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 should_failslab+0xc2/0x120 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4068 [inline]
 slab_alloc_node mm/slub.c:4144 [inline]
 kmem_cache_alloc_node_noprof+0x72/0x3b0 mm/slub.c:4216
 __alloc_skb+0x2b3/0x380 net/core/skbuff.c:668
 alloc_skb include/linux/skbuff.h:1331 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
 nsim_dev_trap_report_work+0x2af/0xd20 drivers/net/netdevsim/dev.c:851
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>