INFO: task kworker/u8:0:11 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:0    state:D stack:20184 pid:11    tgid:11    ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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:105 [inline]
 do_get_write_access+0x121/0xe50 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
 ext4_mb_mark_context+0x345/0xfb0 fs/ext4/mballoc.c:4016
 ext4_mb_mark_diskspace_used+0x3c8/0x960 fs/ext4/mballoc.c:4133
 ext4_mb_new_blocks+0x1494/0x4e00 fs/ext4/mballoc.c:6235
 ext4_ext_map_blocks+0x1be0/0x7d30 fs/ext4/extents.c:4379
 ext4_map_create_blocks fs/ext4/inode.c:516 [inline]
 ext4_map_blocks+0x8bf/0x1990 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+0x20ef/0x3d10 fs/ext4/inode.c:2735
 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2824
 do_writepages+0x361/0x880 mm/page-writeback.c:2702
 __writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2047
 wb_writeback+0x427/0xb80 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+0xb94/0x1080 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task jbd2/sda1-8:5183 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8     state:D stack:23608 pid:5183  tgid:5183  ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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_buffer include/linux/buffer_head.h:414 [inline]
 jbd2_journal_commit_transaction+0x34cb/0x6650 fs/jbd2/commit.c:810
 kjournald2+0x41c/0x7b0 fs/jbd2/journal.c:201
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/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:5836 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20528 pid:5836  tgid:5836  ppid:5834   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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:105 [inline]
 do_get_write_access+0x121/0xe50 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x2f0/0xe90 fs/fs-writeback.c:2515
 generic_update_time fs/inode.c:2112 [inline]
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x3d2/0x450 fs/inode.c:2383
 ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
 do_page_mkwrite+0x19a/0x480 mm/memory.c:3176
 wp_page_shared mm/memory.c:3577 [inline]
 do_wp_page+0x2352/0x5160 mm/memory.c:3727
 handle_pte_fault+0x111e/0x68a0 mm/memory.c:5817
 __handle_mm_fault mm/memory.c:5944 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6112
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f3770a58505
RSP: 002b:00007fffd7accf70 EFLAGS: 00010206
RAX: 00007f376ddf7d68 RBX: 00007fffd7acd080 RCX: 0000000000000000
RDX: 00007f376ddf7d64 RSI: 0000000000000008 RDI: 00007fffd7acd080
RBP: 00000000000003e6 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fffd7acd060 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000008298 R14: ffffffffffff7d68 R15: 0000000000008298
 </TASK>
INFO: task syz-executor:15136 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20544 pid:15136 tgid:15136 ppid:15108  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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:105 [inline]
 do_get_write_access+0x121/0xe50 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
 __ext4_new_inode+0x14d0/0x4380 fs/ext4/ialloc.c:1089
 ext4_mkdir+0x425/0xcf0 fs/ext4/namei.c:3024
 vfs_mkdir+0x2fb/0x4f0 fs/namei.c:4311
 do_mkdirat+0x264/0x3a0 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e5957f0b7
RSP: 002b:00007ffd08939f38 EFLAGS: 00000206 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f7e595f3d75 RCX: 00007f7e5957f0b7
RDX: 00000000000001ff RSI: 00007f7e595f3d75 RDI: 00000000ffffff9c
RBP: 00007f7e59746738 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
INFO: task syz.9.2104:15167 blocked for more than 145 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.2104      state:D stack:25936 pid:15167 tgid:15167 ppid:10839  flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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:105 [inline]
 do_get_write_access+0x121/0xe50 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x2f0/0xe90 fs/fs-writeback.c:2515
 generic_update_time fs/inode.c:2112 [inline]
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x3d2/0x450 fs/inode.c:2383
 ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
 do_page_mkwrite+0x19a/0x480 mm/memory.c:3176
 do_shared_fault mm/memory.c:5398 [inline]
 do_fault mm/memory.c:5460 [inline]
 do_pte_missing mm/memory.c:3979 [inline]
 handle_pte_fault+0x1235/0x68a0 mm/memory.c:5801
 __handle_mm_fault mm/memory.c:5944 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6112
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fd0e865f872
RSP: 002b:00007fff299bc2c0 EFLAGS: 00010202
RAX: 0000000000009008 RBX: 00007fd0e9475720 RCX: 0000000000000000
RDX: 0000001b30a17000 RSI: 0000000000000008 RDI: 00007fd0e9475720
RBP: 000000000000038a R08: 00007fd0e7dff088 R09: 00007fd0e8932000
R10: 00007fd0e7dff008 R11: 0000000000000009 R12: ffffffff82218cc3
R13: 00007fd0e8946038 R14: 0000000000000165 R15: ffffffffffff7000
 </TASK>
INFO: task syz.5.2105:15172 blocked for more than 145 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.2105      state:D stack:26704 pid:15172 tgid:15172 ppid:5854   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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:105 [inline]
 do_get_write_access+0x121/0xe50 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x2f0/0xe90 fs/fs-writeback.c:2515
 generic_update_time fs/inode.c:2112 [inline]
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x3d2/0x450 fs/inode.c:2383
 ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
 do_page_mkwrite+0x19a/0x480 mm/memory.c:3176
 do_shared_fault mm/memory.c:5398 [inline]
 do_fault mm/memory.c:5460 [inline]
 do_pte_missing mm/memory.c:3979 [inline]
 handle_pte_fault+0x1235/0x68a0 mm/memory.c:5801
 __handle_mm_fault mm/memory.c:5944 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6112
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f2a05852981
RSP: 002b:00007ffd0ed667c0 EFLAGS: 00010246
RAX: 00000000005ffdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b31220000 RSI: 0000000000600000 RDI: 00007f2a05a75e70
RBP: 00007ffd0ed66a0c R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000011 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000001102f1 R14: 000000000010ff50 R15: 00007ffd0ed66a60
 </TASK>
INFO: task syz.6.2106:15173 blocked for more than 145 seconds.
      Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.2106      state:D stack:26704 pid:15173 tgid:15173 ppid:8897   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 io_schedule+0x8d/0x110 kernel/sched/core.c:7681
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
 __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:105 [inline]
 do_get_write_access+0x121/0xe50 fs/jbd2/transaction.c:1096
 jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
 __ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
 __ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
 __mark_inode_dirty+0x2f0/0xe90 fs/fs-writeback.c:2515
 generic_update_time fs/inode.c:2112 [inline]
 inode_update_time fs/inode.c:2125 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_update_time+0x3d2/0x450 fs/inode.c:2383
 ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
 do_page_mkwrite+0x19a/0x480 mm/memory.c:3176
 do_shared_fault mm/memory.c:5398 [inline]
 do_fault mm/memory.c:5460 [inline]
 do_pte_missing mm/memory.c:3979 [inline]
 handle_pte_fault+0x1235/0x68a0 mm/memory.c:5801
 __handle_mm_fault mm/memory.c:5944 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6112
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fb752452981
RSP: 002b:00007ffc10f4c350 EFLAGS: 00010246
RAX: 00000000003ffdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2ee20000 RSI: 0000000000400000 RDI: 00007fb752675e70
RBP: 00007ffc10f4c59c R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000011 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000110274 R14: 000000000010ff20 R15: 00007ffc10f4c5f0
 </TASK>

Showing all locks held in the system:
6 locks held by kworker/u8:0/11:
 #0: ffff888141afe148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
 #0: ffff888141afe148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
 #1: ffffc90000107d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
 #1: ffffc90000107d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
 #2: ffff88814e29e0e0 (&type->s_umount_key#32){++++}-{4:4}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
 #3: ffff88814e2a0b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1776 [inline]
 #3: ffff88814e2a0b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x1bf/0x3c0 fs/ext4/inode.c:2823
 #4: ffff88814e2a2958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
 #5: ffff88807beb2040 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x7a6/0x1990 fs/ext4/inode.c:701
1 lock held by khungtaskd/30:
 #0: ffffffff8e93c560 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e93c560 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e93c560 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by getty/5607:
 #0: ffff8880356520a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/5836:
 #0: ffff888020339658 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff888020339658 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
 #2: ffff88814e2a2958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz-executor/15136:
 #0: ffff88814e29e420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
 #1: ffff88805bc06708 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
 #1: ffff88805bc06708 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x260/0x540 fs/namei.c:4080
 #2: ffff88814e2a2958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.9.2104/15167:
 #0: ffff88806276fa90 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff88806276fa90 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
 #2: ffff88814e2a2958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.5.2105/15172:
 #0: ffff88806625b580 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff88806625b580 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
 #2: ffff88814e2a2958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.6.2106/15173:
 #0: ffff88806625bc40 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff88806625bc40 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
 #1: ffff88814e29e518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
 #2: ffff88814e2a2958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #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+0x241/0x360 lib/dump_stack.c:120
 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:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
 watchdog+0xff6/0x1040 kernel/hung_task.c:397
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/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: 12 Comm: kworker/u8:1 Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0xb/0x120 lib/smp_processor_id.c:13
Code: 8c eb 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 54 53 48 83 ec 10 <65> 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 1d 2c fa 30 74 65
RSP: 0018:ffffc90000117908 EFLAGS: 00000082
RAX: 1ffff1100395fc97 RBX: ffff88801cafda00 RCX: ffffffff9a428903
RDX: dffffc0000000000 RSI: ffffffff8c0ae6c0 RDI: ffffffff8c6158a0
RBP: ffffc900001179e8 R08: ffffffff901e34b7 R09: 1ffffffff203c696
R10: dffffc0000000000 R11: fffffbfff203c697 R12: dffffc0000000000
R13: 1ffff92000022f48 R14: 626ea1c19c6b862b R15: 1ffff92000022f2c
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a3e7b87680 CR3: 000000000e738000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
 lockdep_hardirqs_on_prepare+0x1f9/0x780 kernel/locking/lockdep.c:4405
 trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:47
 __local_bh_enable_ip+0x168/0x200 kernel/softirq.c:387
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_nc_purge_paths+0x312/0x3b0 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>