INFO: task kworker/u8:5:83 blocked for more than 143 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:5 state:D stack:23840 pid:83 tgid:83 ppid:2 task_flags:0x4248060 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
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
rq_qos_wait+0x1a9/0x2e0 block/blk-rq-qos.c:280
__wbt_wait block/blk-wbt.c:594 [inline]
wbt_wait+0x1b0/0x390 block/blk-wbt.c:658
__rq_qos_throttle+0x53/0xa0 block/blk-rq-qos.c:66
rq_qos_throttle block/blk-rq-qos.h:151 [inline]
rq_qos_throttle block/blk-rq-qos.h:147 [inline]
blk_mq_get_new_requests block/blk-mq.c:2978 [inline]
blk_mq_submit_bio+0x9e1/0x2610 block/blk-mq.c:3128
__submit_bio+0x3d1/0x690 block/blk-core.c:628
__submit_bio_noacct_mq block/blk-core.c:715 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:744
submit_bio_noacct+0x50d/0x1ec0 block/blk-core.c:867
ext4_io_submit+0xa6/0x140 fs/ext4/page-io.c:377
ext4_do_writepages+0xe16/0x32d0 fs/ext4/inode.c:2755
ext4_writepages+0x303/0x730 fs/ext4/inode.c:2824
do_writepages+0x1b3/0x820 mm/page-writeback.c:2687
__writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1680
writeback_sb_inodes+0x606/0xfa0 fs/fs-writeback.c:1976
__writeback_inodes_wb+0xff/0x2e0 fs/fs-writeback.c:2047
wb_writeback+0x803/0xb80 fs/fs-writeback.c:2158
wb_check_background_flush fs/fs-writeback.c:2228 [inline]
wb_do_writeback fs/fs-writeback.c:2316 [inline]
wb_workfn+0x730/0xbc0 fs/fs-writeback.c:2343
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
INFO: task jbd2/sda1-8:5171 blocked for more than 144 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:25648 pid:5171 tgid:5171 ppid:2 task_flags:0x240040 flags:0x00004000
Call Trace:
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]
__wait_on_buffer+0x64/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:414 [inline]
jbd2_journal_commit_transaction+0x3897/0x67e0 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
INFO: task syz-executor:5830 blocked for more than 144 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22880 pid:5830 tgid:5830 ppid:5828 task_flags:0x440100 flags:0x00000002
Call Trace:
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
wp_page_shared mm/memory.c:3657 [inline]
do_wp_page+0xc4b/0x4670 mm/memory.c:3807
handle_pte_fault mm/memory.c:5904 [inline]
__handle_mm_fault+0x1ade/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: 0033:0x7fea8a2765ef
RSP: 002b:00007ffd13c3ee20 EFLAGS: 00010202
RAX: 00007fea88b3c000 RBX: 000055558dfaa540 RCX: 0000000000000007
RDX: 1ffffffff0e108f7 RSI: 000055558dfb53e8 RDI: 0000000000000080
RBP: 00007ffd13c3f110 R08: 000055558dfb54c8 R09: 000000000000211e
R10: 0000000000000001 R11: 00007ffd13c3f320 R12: 00007ffd13c3f170
R13: 0000000000000004 R14: 00007ffd13c3ee90 R15: 00007ffd13c3ef60
INFO: task syz.1.6505:20127 blocked for more than 145 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.6505 state:D stack:27760 pid:20127 tgid:20127 ppid:5873 task_flags:0x440040 flags:0x00000004
Call Trace:
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: 0033:0x7fa35c06d2fa
RSP: 002b:00007ffe20995ee0 EFLAGS: 00010202
RAX: 0000001b32d20000 RBX: 00007fa35ced5720 RCX: 0000001b32d1fff8
RDX: 00000000005ffde8 RSI: 00000000005ffde8 RDI: 00007fa35ced5700
RBP: ffffffff822caf44 R08: 00007fa35c3a6038 R09: 00007fa35c392000
R10: 00007fa35b7ff008 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffffffff822ca62e R15: 0000000000000001
INFO: task syz.3.6506:20128 blocked for more than 145 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.6506 state:D stack:28368 pid:20128 tgid:20128 ppid:5875 task_flags:0x440040 flags:0x00000004
Call Trace:
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: 0033:0x7fbe12a63c9b
RSP: 002b:00007ffef6363700 EFLAGS: 00010246
RAX: 00000000005ffde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b32920000 RSI: 0000000000600000 RDI: 00007fbe12c967b0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000006f7ac R15: 00007ffef63639b0
INFO: task syz.4.6507:20129 blocked for more than 145 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.6507 state:D stack:28368 pid:20129 tgid:20129 ppid:8768 task_flags:0x440040 flags:0x00000004
Call Trace:
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: 0033:0x7f5c00863c9b
RSP: 002b:00007ffcaf8c0060 EFLAGS: 00010246
RAX: 00000000005ffde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2e520000 RSI: 0000000000600000 RDI: 00007f5c00a967b0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000006f7a9 R15: 00007ffcaf8c0310
INFO: task syz.6.6508:20131 blocked for more than 146 seconds.
Tainted: G U 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.6508 state:D stack:28128 pid:20131 tgid:20131 ppid:18007 task_flags:0x440040 flags:0x00000004
Call Trace:
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: 0033:0x7f7d3f663c9b
RSP: 002b:00007ffcb0bdbd30 EFLAGS: 00010246
RAX: 00000000005ffde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b30120000 RSI: 0000000000600000 RDI: 00007f7d3f8967b0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000006f82e R15: 00007ffcb0bdbfe0
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
4 locks held by kworker/u8:5/83:
#0: ffff88801eef1948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3213
#1: ffffc90001557d18 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3214
#2: ffff88807d5da0e0 (&type->s_umount_key#32){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
#3: ffff88807d5dcb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2687
3 locks held by syz-executor/5830:
#0: ffff888027d0c2f8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff888027d0c2f8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
#1: ffff88807d5da518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
#2: ffff88807d5de950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by getty/9991:
#0: ffff88814de240a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f022f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by syz.1.6505/20127:
#0: ffff88807d71da90 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff88807d71da90 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
#1: ffff88807d5da518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
#2: ffff88807d5de950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.3.6506/20128:
#0: ffff888078d80a90 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff888078d80a90 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
#1: ffff88807d5da518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
#2: ffff88807d5de950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.4.6507/20129:
#0: ffff88807a8b99b8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff88807a8b99b8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
#1: ffff88807d5da518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
#2: ffff88807d5de950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.6.6508/20131:
#0: ffff88805f055a90 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff88805f055a90 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6366
#1: ffff88807d5da518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3256
#2: ffff88807d5de950 (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-00069-g81e4f8d68c66 #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__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