INFO: task kworker/u8:2:35 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2    state:D stack:23184 pid:35    tgid:35    ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 io_schedule+0xbf/0x130 kernel/sched/core.c:7681
 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/0x390 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1a4/0x860 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x1f7/0xe60 fs/fs-writeback.c:2515
 mark_inode_dirty_sync include/linux/fs.h:2490 [inline]
 dquot_claim_block include/linux/quotaops.h:363 [inline]
 ext4_da_update_reserve_space+0x2b7/0x760 fs/ext4/inode.c:362
 ext4_es_insert_extent+0xc03/0x11d0 fs/ext4/extents_status.c:947
 ext4_map_create_blocks fs/ext4/inode.c:566 [inline]
 ext4_map_blocks+0x8f3/0x1370 fs/ext4/inode.c:702
 mpage_map_one_extent fs/ext4/inode.c:2219 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2272 [inline]
 ext4_do_writepages+0x19a7/0x3320 fs/ext4/inode.c:2735
 ext4_writepages+0x303/0x730 fs/ext4/inode.c:2824
 do_writepages+0x1b3/0x820 mm/page-writeback.c:2702
 __writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x603/0xfa0 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0xff/0x2e0 fs/fs-writeback.c:2047
 wb_writeback+0x73e/0xb80 fs/fs-writeback.c:2158
 wb_check_old_data_flush fs/fs-writeback.c:2262 [inline]
 wb_do_writeback fs/fs-writeback.c:2315 [inline]
 wb_workfn+0x8c0/0xbc0 fs/fs-writeback.c:2343
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task jbd2/sda1-8:5189 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8     state:D stack:26896 pid:5189  tgid:5189  ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 io_schedule+0xbf/0x130 kernel/sched/core.c:7681
 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+0x3bfa/0x6ad0 fs/jbd2/commit.c:810
 kjournald2+0x1f8/0x760 fs/jbd2/journal.c:201
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz-executor:5839 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23568 pid:5839  tgid:5839  ppid:5837   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 io_schedule+0xbf/0x130 kernel/sched/core.c:7681
 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/0x390 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1a4/0x860 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x1f7/0xe60 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:6159
 do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 wp_page_shared mm/memory.c:3577 [inline]
 do_wp_page+0xc4b/0x4670 mm/memory.c:3727
 handle_pte_fault mm/memory.c:5817 [inline]
 __handle_mm_fault+0x1ade/0x2a40 mm/memory.c:5944
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
 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: 0033:0x7f55812584a5
RSP: 002b:00007ffc10ab83d0 EFLAGS: 00010206
RAX: 00007f557bfb7b7c RBX: 00007ffc10ab84e0 RCX: 0000000000000000
RDX: 00007f557bfb7b78 RSI: 0000000000000008 RDI: 00007ffc10ab84e0
RBP: 00000000000003e6 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffc10ab84c0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000048484 R14: fffffffffffb7b7c R15: 0000000000048484
 </TASK>
INFO: task syz.2.1283:18988 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1283      state:D stack:26016 pid:18988 tgid:18988 ppid:17765  flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 io_schedule+0xbf/0x130 kernel/sched/core.c:7681
 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/0x390 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1a4/0x860 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x1f7/0xe60 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:6159
 do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 do_shared_fault mm/memory.c:5398 [inline]
 do_fault mm/memory.c:5460 [inline]
 do_pte_missing+0x29e/0x3e00 mm/memory.c:3979
 handle_pte_fault mm/memory.c:5801 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:5944
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
 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: 0033:0x7f586625f06a
RSP: 002b:00007ffc2e49c7f0 EFLAGS: 00010202
RAX: 0000001b31408000 RBX: 00007f5867075720 RCX: 0000001b31407ff8
RDX: 0000001b31020218 RSI: 0000000000000008 RDI: 00007f5867075720
RBP: ffffffff8b0c88db R08: 00007f5866546118 R09: 00007f5866532000
R10: 00007f58655fd008 R11: 000000000000000c R12: 000000000000000c
R13: 00000000000000fc R14: ffffffff8b0c81b5 R15: 0000000000000204
 </TASK>
INFO: task syz.4.1285:19001 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1285      state:D stack:27000 pid:19001 tgid:19001 ppid:15163  flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 io_schedule+0xbf/0x130 kernel/sched/core.c:7681
 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/0x390 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1a4/0x860 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x1f7/0xe60 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:6159
 do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 do_shared_fault mm/memory.c:5398 [inline]
 do_fault mm/memory.c:5460 [inline]
 do_pte_missing+0x29e/0x3e00 mm/memory.c:3979
 handle_pte_fault mm/memory.c:5801 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:5944
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
 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: 0033:0x7fa498852921
RSP: 002b:00007ffd4dbc1690 EFLAGS: 00010246
RAX: 000000000003fdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2ef20000 RSI: 0000000000040000 RDI: 00007fa498a76010
RBP: 00007ffd4dbc18dc R08: 000000000000000a R09: 00007ffd4dbc13d4
R10: 0000000000000001 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000099ff6 R14: 0000000000099ec0 R15: 00007ffd4dbc1930
 </TASK>
INFO: task syz.8.1286:19002 blocked for more than 145 seconds.
      Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.1286      state:D stack:27856 pid:19002 tgid:19002 ppid:11083  flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 io_schedule+0xbf/0x130 kernel/sched/core.c:7681
 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/0x390 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1a4/0x860 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x1f7/0xe60 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:6159
 do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 do_shared_fault mm/memory.c:5398 [inline]
 do_fault mm/memory.c:5460 [inline]
 do_pte_missing+0x29e/0x3e00 mm/memory.c:3979
 handle_pte_fault mm/memory.c:5801 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:5944
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
 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: 0033:0x7fd0a1652921
RSP: 002b:00007ffc4d6f2420 EFLAGS: 00010246
RAX: 00000000003ffdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b31e20000 RSI: 0000000000400000 RDI: 00007fd0a1876010
RBP: 00007ffc4d6f266c R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000011 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000099cbd R14: 0000000000099c3b R15: 00007ffc4d6f26c0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8dfbb000 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8dfbb000 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8dfbb000 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
6 locks held by kworker/u8:2/35:
 #0: ffff888143ec6148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x126b/0x1b30 kernel/workqueue.c:3204
 #1: ffffc90000ab7d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
 #2: ffff88807c80a0e0 (&type->s_umount_key#31){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
 #3: ffff88807c80cb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2702
 #4: ffff88807c80e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
 #5: ffff88807e31e598 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x352/0x1370 fs/ext4/inode.c:701
2 locks held by getty/5609:
 #0: ffff88814d6e60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/5839:
 #0: ffff8880346969b8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff8880346969b8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
 #1: ffff88807c80a518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 #2: ffff88807c80e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
4 locks held by kworker/u8:19/7375:
2 locks held by kworker/u8:25/12745:
 #0: ffff8880b863ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
 #1: ffff8880b8628a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987
3 locks held by syz.2.1283/18988:
 #0: ffff8880711ffc40 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff8880711ffc40 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
 #1: ffff88807c80a518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 #2: ffff88807c80e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.4.1285/19001:
 #0: ffff88807f6c7730 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff88807f6c7730 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
 #1: ffff88807c80a518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 #2: ffff88807c80e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.8.1286/19002:
 #0: ffff88807025e8e0 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff88807025e8e0 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
 #1: ffff88807c80a518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
 #2: ffff88807c80e958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by dhcpcd/19178:
 #0: ffff888061acc258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1617 [inline]
 #0: ffff888061acc258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf60 net/packet/af_packet.c:3267
 #1: ffffffff8dfc6938 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:234 [inline]
 watchdog+0xf14/0x1240 kernel/hung_task.c:397
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12745 Comm: kworker/u8:25 Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:write_comp_data+0x42/0x90 kernel/kcov.c:246
Code: a9 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00 0f 00 75 60 a9 00 00 f0 00 75 59 8b 82 1c 16 00 00 85 c0 74 4f 8b 82 f8 15 00 00 <83> f8 03 75 44 48 8b 82 00 16 00 00 8b 92 fc 15 00 00 48 8b 38 48
RSP: 0018:ffffc9000bacfbc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880633dd000 RCX: ffffffff88f34cab
RDX: ffff8880347a0000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000004 R12: 0000000000000000
R13: ffffffff8c2a30fc R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056464cbc5600 CR3: 000000002e4ec000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 skb_ext_put include/linux/skbuff.h:4846 [inline]
 skb_release_head_state+0x16b/0x290 net/core/skbuff.c:1182
 skb_release_all net/core/skbuff.c:1188 [inline]
 __kfree_skb net/core/skbuff.c:1204 [inline]
 consume_skb net/core/skbuff.c:1436 [inline]
 consume_skb+0x85/0x100 net/core/skbuff.c:1430
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline]
 nsim_dev_trap_report_work+0x8e6/0xd20 drivers/net/netdevsim/dev.c:851
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>