INFO: task kworker/1:1:53 blocked for more than 143 seconds.
      Tainted: G     U             6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:25216 pid:53    tgid:53    ppid:2      task_flags:0x4248060 flags:0x00004000
Workqueue: events update_super_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 io_schedule+0xbf/0x130 kernel/sched/core.c:7690
 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
 update_super_work+0x125/0x430 fs/ext4/super.c:775
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 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:5826 blocked for more than 143 seconds.
      Tainted: G     U             6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23024 pid:5826  tgid:5826  ppid:5824   task_flags:0x440100 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 io_schedule+0xbf/0x130 kernel/sched/core.c:7690
 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:3256
 do_shared_fault mm/memory.c:5485 [inline]
 do_fault mm/memory.c:5547 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4059
 handle_pte_fault mm/memory.c:5888 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:6031
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6200
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fcf21a765ef
RSP: 002b:00007ffe69c8d100 EFLAGS: 00010202
RAX: 00007fcf1ff1c000 RBX: 0000000000000147 RCX: 0000000000000005
RDX: 1ffffffff0ca7b4d RSI: 000055558143f2c8 RDI: 0000000000000020
RBP: 00007ffe69c8d3f0 R08: 000055558143f2c8 R09: 0000000000000f69
R10: 00007fcf21a00000 R11: 00007ffe69c8d600 R12: 00007ffe69c8d450
R13: 0000000000000004 R14: 00007ffe69c8d170 R15: 00007ffe69c8d240
 </TASK>
INFO: task syz.2.2493:17153 blocked for more than 143 seconds.
      Tainted: G     U             6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.2493      state:D stack:26048 pid:17153 tgid:17153 ppid:15839  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 io_schedule+0xbf/0x130 kernel/sched/core.c:7690
 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:3256
 do_shared_fault mm/memory.c:5485 [inline]
 do_fault mm/memory.c:5547 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4059
 handle_pte_fault mm/memory.c:5888 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:6031
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6200
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f79f726d2fa
RSP: 002b:00007ffcbf1b1a90 EFLAGS: 00010202
RAX: 0000001b313e5000 RBX: 00007f79f80d5720 RCX: 0000001b313e4ff8
RDX: 0000001b30e20220 RSI: 0000000000000008 RDI: 00007f79f80d5720
RBP: ffffffff81ade36e R08: 00007f79f75a61f8 R09: 00007f79f7592000
R10: 00007f79f61fb008 R11: 0000000000000011 R12: 0000000000000011
R13: 00000000000001ab R14: ffffffff81ade596 R15: 00000000000001d8
 </TASK>
INFO: task syz.3.2494:17159 blocked for more than 144 seconds.
      Tainted: G     U             6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2494      state:D stack:25504 pid:17159 tgid:17159 ppid:15365  task_flags:0x440040 flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 io_schedule+0xbf/0x130 kernel/sched/core.c:7690
 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:3256
 do_shared_fault mm/memory.c:5485 [inline]
 do_fault mm/memory.c:5547 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4059
 handle_pte_fault mm/memory.c:5888 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:6031
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6200
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f612c26d2fa
RSP: 002b:00007ffea4a799f0 EFLAGS: 00010202
RAX: 0000001b33cd8000 RBX: 00007f612d0d5720 RCX: 0000001b33cd7ff8
RDX: 0000001b33720220 RSI: 0000000000000008 RDI: 00007f612d0d5720
RBP: ffffffff81fa2322 R08: 00007f612c5a61f8 R09: 00007f612c592000
R10: 00007f612b1fb008 R11: 0000000000000007 R12: 0000000000000007
R13: 0000000000000145 R14: ffffffff81fa2575 R15: 000000000000015f
 </TASK>
INFO: task syz.0.2495:17202 blocked for more than 144 seconds.
      Tainted: G     U             6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.2495      state:D stack:27360 pid:17202 tgid:17202 ppid:15572  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 io_schedule+0xbf/0x130 kernel/sched/core.c:7690
 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:3256
 do_shared_fault mm/memory.c:5485 [inline]
 do_fault mm/memory.c:5547 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4059
 handle_pte_fault mm/memory.c:5888 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:6031
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6200
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f3a6425f5f1
RSP: 002b:00007ffdabf48050 EFLAGS: 00010202
RAX: 0000001b30160000 RBX: 00007f3a650d5720 RCX: 0000000000000003
RDX: 0000001b3015ffff RSI: 0000000000000008 RDI: 00007f3a650d5720
RBP: 00007f3a645a6038 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f3a650d5700 R11: 0000000000000000 R12: 00000000fffffc03
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
INFO: task syz.1.2468:17227 blocked for more than 145 seconds.
      Tainted: G     U             6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2468      state:D stack:27472 pid:17227 tgid:17227 ppid:16524  task_flags:0x440040 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 io_schedule+0xbf/0x130 kernel/sched/core.c:7690
 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:3256
 do_shared_fault mm/memory.c:5485 [inline]
 do_fault mm/memory.c:5547 [inline]
 do_pte_missing+0x29e/0x3e10 mm/memory.c:4059
 handle_pte_fault mm/memory.c:5888 [inline]
 __handle_mm_fault+0x103c/0x2a40 mm/memory.c:6031
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6200
 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f32bfe63c9b
RSP: 002b:00007fffed6437d0 EFLAGS: 00010246
RAX: 00000000003ffde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b33920000 RSI: 0000000000400000 RDI: 00007f32c00967b0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00007f32c0176260 R14: 0000000000000003 R15: 00007fffed643a80
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffffffff8e1bd140 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e1bd140 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e1bd140 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
3 locks held by kworker/1:1/53:
 #0: ffff88801b080d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3213
 #1: ffffc90000bd7d18 ((work_completion)(&sbi->s_sb_upd_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3214
 #2: ffff88814ecb4950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
6 locks held by kworker/u8:4/82:
 #0: ffff8881412a5148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3213
 #1: ffffc900015a7d18 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3214
 #2: ffff88814ecb00e0 (&type->s_umount_key#31){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
 #3: ffff88814ecb2b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2687
 #4: ffff88814ecb4950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
 #5: ffff88807cfdef80 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x352/0x1370 fs/ext4/inode.c:701
2 locks held by getty/5594:
 #0: ffff88803524a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900033332f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/5826:
 #0: ffff88807b326df0 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff88807b326df0 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
 #1: ffff88814ecb0518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
 #2: ffff88814ecb4950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by kworker/u8:22/9720:
 #0: ffff8880b873ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
 #1: ffff88803300c018 (&pid_list->lock){-.-.}-{2:2}, at: trace_pid_list_is_set+0x4c/0x150 kernel/trace/pid_list.c:145
3 locks held by syz.2.2493/17153:
 #0: ffff8880262e39b8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff8880262e39b8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
 #1: ffff88814ecb0518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
 #2: ffff88814ecb4950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.3.2494/17159:
 #0: ffff8880329c79b8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff8880329c79b8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
 #1: ffff88814ecb0518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
 #2: ffff88814ecb4950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.0.2495/17202:
 #0: ffff88801ff983d0 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff88801ff983d0 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
 #1: ffff88814ecb0518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
 #2: ffff88814ecb4950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.1.2468/17227:
 #0: ffff88807f2ab3d0 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
 #0: ffff88807f2ab3d0 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
 #1: ffff88814ecb0518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
 #2: ffff88814ecb4950 (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: 31 Comm: khungtaskd Tainted: G     U             6.14.0-rc7-syzkaller #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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: 15318 Comm: kworker/u8:11 Tainted: G     U             6.14.0-rc7-syzkaller #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0xefb/0x3c40 kernel/locking/lockdep.c:5098
Code: 00 0f 87 4c f2 ff ff 45 89 f7 0f 87 45 1f 00 00 4b 8d 7c fc 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 41 1f 00 00 4b 8b 54 fc 08 48 85 d2 0f 85 36 f2 ff ff e9 10
RSP: 0018:ffffc90004bc7880 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 1ffffffff1c37a29 RSI: 1ffff92000978f22 RDI: ffffffff8e1bd148
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90628b17 R11: 0000000000000002 R12: ffffffff8e1bd140
R13: ffff88807f001e00 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560df559d680 CR3: 000000000df80000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 batadv_nc_process_nc_paths.part.0+0xe4/0x3e0 net/batman-adv/network-coding.c:687
 batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline]
 batadv_nc_worker+0xcc8/0x1060 net/batman-adv/network-coding.c:728
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 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>