INFO: task syz-executor:5589 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:20984 pid:5589 tgid:5589 ppid:5588 task_flags:0x440100 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7368
io_schedule+0x8a/0xf0 kernel/sched/core.c:8212
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:258
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:106 [inline]
do_get_write_access+0x836/0x11e0 fs/jbd2/transaction.c:1113
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1263
__ext4_journal_get_write_access+0x277/0x380 fs/ext4/ext4_jbd2.c:249
ext4_reserve_inode_write+0x1b7/0x330 fs/ext4/inode.c:6509
__ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6694
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6731
__mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729
generic_update_time fs/inode.c:2253 [inline]
file_update_time_flags+0x49c/0x520 fs/inode.c:2483
ext4_page_mkwrite+0x324/0x1860 fs/ext4/inode.c:6897
do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
wp_page_shared mm/memory.c:4217 [inline]
do_wp_page+0x9ed/0x45c0 mm/memory.c:4440
handle_pte_fault mm/memory.c:6582 [inline]
__handle_mm_fault+0x1cd2/0x2f60 mm/memory.c:6707
handle_mm_fault+0x363/0xa20 mm/memory.c:6876
do_user_addr_fault+0x59c/0x12f0 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7fdb6f07c6e2
RSP: 002b:00007ffe166a35d0 EFLAGS: 00010202
RAX: 00007fdb6d004000 RBX: 000055555a3bf0e0 RCX: 0000000000000001
RDX: 0000000000002fae RSI: 000055555a3c2e00 RDI: 0000000000000002
RBP: 00007ffe166a3ad0 R08: 000055555a3c2fc0 R09: 000000000000009b
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe166a3910
R13: 00007ffe166a3700 R14: 585858582e7a7973 R15: 00007ffe166a3650
INFO: task syz.2.4151:15314 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.2.4151 state:D stack:27128 pid:15314 tgid:15314 ppid:5603 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7368
io_schedule+0x8a/0xf0 kernel/sched/core.c:8212
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:258
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:106 [inline]
do_get_write_access+0x836/0x11e0 fs/jbd2/transaction.c:1113
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1263
__ext4_journal_get_write_access+0x277/0x380 fs/ext4/ext4_jbd2.c:249
ext4_reserve_inode_write+0x1b7/0x330 fs/ext4/inode.c:6509
__ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6694
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6731
__mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729
generic_update_time fs/inode.c:2253 [inline]
file_update_time_flags+0x49c/0x520 fs/inode.c:2483
ext4_page_mkwrite+0x324/0x1860 fs/ext4/inode.c:6897
do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
do_shared_fault mm/memory.c:6076 [inline]
do_fault+0x659/0x1830 mm/memory.c:6138
do_pte_missing mm/memory.c:4700 [inline]
handle_pte_fault mm/memory.c:6558 [inline]
__handle_mm_fault+0x150b/0x2f60 mm/memory.c:6707
handle_mm_fault+0x363/0xa20 mm/memory.c:6876
do_user_addr_fault+0x59c/0x12f0 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f8dcea72f32
RSP: 002b:00007ffcab2cf5f0 EFLAGS: 00010202
RAX: 000000000000b008 RBX: 00007f8dcf955720 RCX: 0000000000000000
RDX: 0000001b32f19000 RSI: 0000000000000008 RDI: 00007f8dcf955720
RBP: 0000000000000be6 R08: 00007f8dcee10000 R09: 00007f8dcee26038
R10: 0000000000000007 R11: 0000000000000001 R12: ffffffff8bcdf8d1
R13: 00007f8dcee26038 R14: 000000000000009d R15: ffffffffffff5000
INFO: task syz.4.4158:15329 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.4.4158 state:D stack:27128 pid:15329 tgid:15329 ppid:5600 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7368
io_schedule+0x8a/0xf0 kernel/sched/core.c:8212
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:258
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:106 [inline]
do_get_write_access+0x836/0x11e0 fs/jbd2/transaction.c:1113
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1263
__ext4_journal_get_write_access+0x277/0x380 fs/ext4/ext4_jbd2.c:249
ext4_reserve_inode_write+0x1b7/0x330 fs/ext4/inode.c:6509
__ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6694
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6731
__mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729
generic_update_time fs/inode.c:2253 [inline]
file_update_time_flags+0x49c/0x520 fs/inode.c:2483
ext4_page_mkwrite+0x324/0x1860 fs/ext4/inode.c:6897
do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
do_shared_fault mm/memory.c:6076 [inline]
do_fault+0x659/0x1830 mm/memory.c:6138
do_pte_missing mm/memory.c:4700 [inline]
handle_pte_fault mm/memory.c:6558 [inline]
__handle_mm_fault+0x150b/0x2f60 mm/memory.c:6707
handle_mm_fault+0x363/0xa20 mm/memory.c:6876
do_user_addr_fault+0x59c/0x12f0 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f04dd6727a9
RSP: 002b:00007ffc508859e0 EFLAGS: 00010202
RAX: 0000001b33124000 RBX: ffffffff8268706b RCX: 0000001b33123ff8
RDX: 00000000005ffde8 RSI: 00000000005ffde8 RDI: 00007f04de555700
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007f04dda12000
R10: 00007f04de555700 R11: 0000000000000001 R12: 00007f04dda26128
R13: 0000000000000000 R14: ffffffff82687901 R15: 00007f04de555720
INFO: task syz.0.4161:15336 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.0.4161 state:D stack:27128 pid:15336 tgid:15336 ppid:5602 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7368
io_schedule+0x8a/0xf0 kernel/sched/core.c:8212
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:258
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:106 [inline]
do_get_write_access+0x836/0x11e0 fs/jbd2/transaction.c:1113
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1263
__ext4_journal_get_write_access+0x277/0x380 fs/ext4/ext4_jbd2.c:249
ext4_reserve_inode_write+0x1b7/0x330 fs/ext4/inode.c:6509
__ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6694
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6731
__mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729
generic_update_time fs/inode.c:2253 [inline]
file_update_time_flags+0x49c/0x520 fs/inode.c:2483
ext4_page_mkwrite+0x324/0x1860 fs/ext4/inode.c:6897
do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
do_shared_fault mm/memory.c:6076 [inline]
do_fault+0x659/0x1830 mm/memory.c:6138
do_pte_missing mm/memory.c:4700 [inline]
handle_pte_fault mm/memory.c:6558 [inline]
__handle_mm_fault+0x150b/0x2f60 mm/memory.c:6707
handle_mm_fault+0x363/0xa20 mm/memory.c:6876
do_user_addr_fault+0x59c/0x12f0 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f718de727a9
RSP: 002b:00007fff652dcb90 EFLAGS: 00010202
RAX: 0000001b32d21000 RBX: ffffffff8263ba96 RCX: 0000001b32d20ff8
RDX: 0000001b3272421c RSI: 0000000000000008 RDI: 00007f718ed55720
RBP: 000000000000016d R08: 00007f718e210000 R09: 00007f718e212000
R10: 000000008263ba9a R11: 0000000000000002 R12: 00007f718e226038
R13: 000000000000022e R14: ffffffff8263be37 R15: 00007f718ed55720
INFO: task syz.1.4163:15338 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.1.4163 state:D stack:28232 pid:15338 tgid:15338 ppid:5601 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7368
io_schedule+0x8a/0xf0 kernel/sched/core.c:8212
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:258
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:106 [inline]
do_get_write_access+0x836/0x11e0 fs/jbd2/transaction.c:1113
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1263
__ext4_journal_get_write_access+0x277/0x380 fs/ext4/ext4_jbd2.c:249
ext4_reserve_inode_write+0x1b7/0x330 fs/ext4/inode.c:6509
__ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6694
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6731
__mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729
generic_update_time fs/inode.c:2253 [inline]
file_update_time_flags+0x49c/0x520 fs/inode.c:2483
ext4_page_mkwrite+0x324/0x1860 fs/ext4/inode.c:6897
do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
do_shared_fault mm/memory.c:6076 [inline]
do_fault+0x659/0x1830 mm/memory.c:6138
do_pte_missing mm/memory.c:4700 [inline]
handle_pte_fault mm/memory.c:6558 [inline]
__handle_mm_fault+0x150b/0x2f60 mm/memory.c:6707
handle_mm_fault+0x363/0xa20 mm/memory.c:6876
do_user_addr_fault+0x59c/0x12f0 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7feb6c86baa3
RSP: 002b:00007ffdccbad7a0 EFLAGS: 00010246
RAX: 00000000005ffde8 RBX: 0000000000000000 RCX: 0000001b32864000
RDX: 0000001b32824000 RSI: 0000000000600000 RDI: 00007feb6cbe0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffdccbada30
INFO: task syz.3.4162:15339 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.3.4162 state:D stack:28232 pid:15339 tgid:15339 ppid:5610 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7368
io_schedule+0x8a/0xf0 kernel/sched/core.c:8212
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:258
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:106 [inline]
do_get_write_access+0x836/0x11e0 fs/jbd2/transaction.c:1113
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1263
__ext4_journal_get_write_access+0x277/0x380 fs/ext4/ext4_jbd2.c:249
ext4_reserve_inode_write+0x1b7/0x330 fs/ext4/inode.c:6509
__ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6694
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6731
__mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729
generic_update_time fs/inode.c:2253 [inline]
file_update_time_flags+0x49c/0x520 fs/inode.c:2483
ext4_page_mkwrite+0x324/0x1860 fs/ext4/inode.c:6897
do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
do_shared_fault mm/memory.c:6076 [inline]
do_fault+0x659/0x1830 mm/memory.c:6138
do_pte_missing mm/memory.c:4700 [inline]
handle_pte_fault mm/memory.c:6558 [inline]
__handle_mm_fault+0x150b/0x2f60 mm/memory.c:6707
handle_mm_fault+0x363/0xa20 mm/memory.c:6876
do_user_addr_fault+0x59c/0x12f0 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f71de66baa3
RSP: 002b:00007ffe3fe94e70 EFLAGS: 00010246
RAX: 00000000005ffde8 RBX: 0000000000000000 RCX: 0000001b32a64000
RDX: 0000001b32a24000 RSI: 0000000000600000 RDI: 00007f71de9e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffe3fe95100
Showing all locks held in the system:
locks held by kworker/u8:0/12: 6, on CPU#0:
#0: ffff8880202e3140 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90000117d08 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffff8880362be0e8 (&type->s_umount_key#57){++++}-{4:4}, at: super_trylock_shared+0x21/0xf0 fs/super.c:688
#3: ffff8880362bcc98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x278/0x600 mm/page-writeback.c:2560
#4: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
#5: ffff88807486f7e8 (&ei->i_data_sem#2){++++}-{4:4}, at: ext4_map_blocks+0x45a/0xdd0 fs/ext4/inode.c:822
locks held by kworker/u8:1/13: 3, last CPU#0:
#0: ffff88801c094140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90000127d08 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffff88807d877258 (&devlink->lock_key#2){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x56/0xd20 drivers/net/netdevsim/dev.c:834
locks held by pr/ttyS0/16: 1, last CPU#0:
#0: ffffffff8edd85b8 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:314 [inline]
#0: ffffffff8edd85b8 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:439 [inline]
#0: ffffffff8edd85b8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x49/0x60 kernel/printk/printk.c:291
locks held by khungtaskd/31: 1, last CPU#0:
#0: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
#0: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6871
locks held by syz-executor/5589: 3, on CPU#0:
#0: ffff888073010d08 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
#1: ffff8880362be558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
#2: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
locks held by getty/14073: 2, on CPU#0:
#0: ffff888033c7d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90004ac92e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x14e0 drivers/tty/n_tty.c:2211
locks held by syz.2.4151/15314: 3, on CPU#0:
#0: ffff8880742e2308 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
#1: ffff8880362be558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
#2: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
locks held by syz.4.4158/15329: 3, on CPU#0:
#0: ffff888037b67588 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
#1: ffff8880362be558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
#2: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
locks held by syz.0.4161/15336: 3, on CPU#0:
#0: ffff888073a19808 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
#1: ffff8880362be558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
#2: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
locks held by syz.1.4163/15338: 3, on CPU#0:
#0: ffff88807c169088 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
#1: ffff8880362be558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
#2: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
locks held by syz.3.4162/15339: 3, on CPU#0:
#0: ffff88807c150448 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
#1: ffff8880362be558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x17a/0x440 mm/memory.c:3816
#2: ffff8880362ba938 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfa7/0x1390 fs/jbd2/transaction.c:444
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:123
nmi_trigger_cpumask_backtrace+0x21f/0x2a0 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+0x141/0x190 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xcb1/0x1030 kernel/hung_task.c:561
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245