INFO: task kworker/u8:3:52 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:21008 pid:52 tgid:52 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_do_writepages+0x1129/0x3d40 fs/ext4/inode.c:2736
ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2842
do_writepages+0x35d/0x870 mm/page-writeback.c:2683
__writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1651
writeback_sb_inodes+0x99c/0x1380 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2018
wb_writeback+0x495/0xd40 fs/fs-writeback.c:2129
wb_check_old_data_flush fs/fs-writeback.c:2233 [inline]
wb_do_writeback fs/fs-writeback.c:2286 [inline]
wb_workfn+0xba1/0x1090 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task kworker/u8:5:136 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:5 state:D stack:19984 pid:136 tgid:136 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_workqueue+0x7d6/0x1710 kernel/workqueue.c:3968
peer_remove_after_dead+0x9d/0x1a0 drivers/net/wireguard/peer.c:116
wg_peer_remove_all+0x453/0x4f0 drivers/net/wireguard/peer.c:183
wg_destruct+0x173/0x2e0 drivers/net/wireguard/device.c:254
netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10762
default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11898
ops_exit_list net/core/net_namespace.c:178 [inline]
cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task jbd2/sda1-8:4641 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:22104 pid:4641 tgid:4641 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb0/0x2f0 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:415 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:171 [inline]
jbd2_journal_commit_transaction+0x3df6/0x67e0 fs/jbd2/commit.c:887
kjournald2+0x41c/0x7b0 fs/jbd2/journal.c:201
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor:5210 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20752 pid:5210 tgid:5210 ppid:5208 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:6011
__mark_inode_dirty+0x325/0xe20 fs/fs-writeback.c:2486
generic_update_time fs/inode.c:2004 [inline]
inode_update_time fs/inode.c:2017 [inline]
__file_update_time fs/inode.c:2206 [inline]
file_update_time+0x3ad/0x430 fs/inode.c:2236
ext4_page_mkwrite+0x207/0xdf0 fs/ext4/inode.c:6132
do_page_mkwrite+0x19b/0x480 mm/memory.c:3142
wp_page_shared mm/memory.c:3545 [inline]
do_wp_page+0x23d9/0x52f0 mm/memory.c:3695
handle_pte_fault+0x115a/0x6fc0 mm/memory.c:5537
__handle_mm_fault mm/memory.c:5664 [inline]
handle_mm_fault+0x1056/0x1ad0 mm/memory.c:5832
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ffa8a467254
RSP: 002b:00007ffd493e73d0 EFLAGS: 00010202
RAX: 00007ffa88470000 RBX: 0000555571d0a0a0 RCX: 0000000000000007
RDX: 1ffffffff08d4e17 RSI: 0000555571c97708 RDI: 0000000000000080
RBP: 00007ffd493e78b0 R08: 0000555571c97730 R09: 00000000000029c2
R10: 00007ffa8b2c70b8 R11: 0000000000000246 R12: 00007ffd493e7700
R13: 0000000000000005 R14: 00007ffd493e7440 R15: 00007ffd493e7510
INFO: task syz.1.596:7879 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.596 state:D stack:24672 pid:7879 tgid:7879 ppid:7325 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:6011
__mark_inode_dirty+0x325/0xe20 fs/fs-writeback.c:2486
generic_update_time fs/inode.c:2004 [inline]
inode_update_time fs/inode.c:2017 [inline]
__file_update_time fs/inode.c:2206 [inline]
file_update_time+0x3ad/0x430 fs/inode.c:2236
ext4_page_mkwrite+0x207/0xdf0 fs/ext4/inode.c:6132
do_page_mkwrite+0x19b/0x480 mm/memory.c:3142
do_shared_fault mm/memory.c:5133 [inline]
do_fault mm/memory.c:5195 [inline]
do_pte_missing mm/memory.c:3947 [inline]
handle_pte_fault+0x126b/0x6fc0 mm/memory.c:5521
__handle_mm_fault mm/memory.c:5664 [inline]
handle_mm_fault+0x1056/0x1ad0 mm/memory.c:5832
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fd81565caf6
RSP: 002b:00007fff6d93db70 EFLAGS: 00010202
RAX: 0000001b2d618000 RBX: 00007fd816465720 RCX: 0000001b2d617ff8
RDX: ffffffff814156e7 RSI: 0000000000000008 RDI: 00007fd816465720
RBP: 0000000000000064 R08: 00007fd815920000 R09: 00007fd815922000
R10: 00000000814156eb R11: 000000000000000b R12: ffffffff81415ee9
R13: 00007fd815936018 R14: 0000000000000008 R15: 000000000000012b
INFO: task syz.3.594:7883 blocked for more than 146 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.594 state:D stack:24672 pid:7883 tgid:7883 ppid:7328 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:6011
__mark_inode_dirty+0x325/0xe20 fs/fs-writeback.c:2486
generic_update_time fs/inode.c:2004 [inline]
inode_update_time fs/inode.c:2017 [inline]
__file_update_time fs/inode.c:2206 [inline]
file_update_time+0x3ad/0x430 fs/inode.c:2236
ext4_page_mkwrite+0x207/0xdf0 fs/ext4/inode.c:6132
do_page_mkwrite+0x19b/0x480 mm/memory.c:3142
do_shared_fault mm/memory.c:5133 [inline]
do_fault mm/memory.c:5195 [inline]
do_pte_missing mm/memory.c:3947 [inline]
handle_pte_fault+0x126b/0x6fc0 mm/memory.c:5521
__handle_mm_fault mm/memory.c:5664 [inline]
handle_mm_fault+0x1056/0x1ad0 mm/memory.c:5832
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa8e165d276
RSP: 002b:00007ffcadd92f50 EFLAGS: 00010202
RAX: 0000000000007008 RBX: 00007fa8e2465720 RCX: 0000000000000000
RDX: 0000001b2d819000 RSI: 0000000000000008 RDI: 00007fa8e2465720
RBP: ffffffff820dbd72 R08: 00007fa8e0a01068 R09: 00007fa8e1922000
R10: 00000000813662f8 R11: 000000000000000b R12: 00000000000002f8
R13: 00007fa8e19360f0 R14: 00000000000000fa R15: ffffffffffff9000
INFO: task syz.3.594:7889 blocked for more than 147 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.594 state:D stack:26672 pid:7889 tgid:7883 ppid:7328 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
jbd2_log_wait_commit+0x29f/0x4a0 fs/jbd2/journal.c:683
jbd2_journal_flush+0x15c/0xc10 fs/jbd2/journal.c:2458
ext4_ioctl_group_add+0x1fc/0x530 fs/ext4/ioctl.c:967
__ext4_ioctl fs/ext4/ioctl.c:1389 [inline]
ext4_ioctl+0x1c27/0x5590 fs/ext4/ioctl.c:1626
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
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: 0033:0x7fa8e177def9
RSP: 002b:00007fa8e2551038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa8e1935f80 RCX: 00007fa8e177def9
RDX: 0000000020000180 RSI: 0000000040286608 RDI: 0000000000000006
RBP: 00007fa8e17f09f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa8e1935f80 R15: 00007ffcadd92ed8
INFO: task syz.4.597:7886 blocked for more than 147 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.597 state:D stack:24672 pid:7886 tgid:7886 ppid:7339 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:6011
__mark_inode_dirty+0x325/0xe20 fs/fs-writeback.c:2486
generic_update_time fs/inode.c:2004 [inline]
inode_update_time fs/inode.c:2017 [inline]
__file_update_time fs/inode.c:2206 [inline]
file_update_time+0x3ad/0x430 fs/inode.c:2236
ext4_page_mkwrite+0x207/0xdf0 fs/ext4/inode.c:6132
do_page_mkwrite+0x19b/0x480 mm/memory.c:3142
do_shared_fault mm/memory.c:5133 [inline]
do_fault mm/memory.c:5195 [inline]
do_pte_missing mm/memory.c:3947 [inline]
handle_pte_fault+0x126b/0x6fc0 mm/memory.c:5521
__handle_mm_fault mm/memory.c:5664 [inline]
handle_mm_fault+0x1056/0x1ad0 mm/memory.c:5832
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f4c7dc5d276
RSP: 002b:00007ffe94b0ae60 EFLAGS: 00010202
RAX: 0000000000001008 RBX: 00007f4c7ea65720 RCX: 0000000000000000
RDX: 0000001b2db1f000 RSI: 0000000000000008 RDI: 00007f4c7ea65720
RBP: ffffffff81cb61c6 R08: 00007f4c7d401058 R09: 00007f4c7df22000
R10: 0000000081412523 R11: 0000000000000002 R12: 0000000000000638
R13: 00007f4c7df36018 R14: 00000000000000b4 R15: fffffffffffff000
INFO: task syz-executor:7892 blocked for more than 148 seconds.
Not tainted 6.11.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24992 pid:7892 tgid:7892 ppid:5210 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
start_this_handle+0x55d/0x2110 fs/jbd2/transaction.c:384
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_new_inode+0x12dc/0x4260 fs/ext4/ialloc.c:1078
ext4_mkdir+0x425/0xcf0 fs/ext4/namei.c:3015
vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4210
do_mkdirat+0x264/0x3a0 fs/namei.c:4233
__do_sys_mkdir fs/namei.c:4253 [inline]
__se_sys_mkdir fs/namei.c:4251 [inline]
__x64_sys_mkdir+0x6c/0x80 fs/namei.c:4251
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: 0033:0x7f52bbd7c767
RSP: 002b:00007ffed4e307c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffed4e30912 RCX: 00007f52bbd7c767
RDX: 000000000df72535 RSI: 00000000000001c0 RDI: 00007ffed4e30900
RBP: f49998db0aa753ff R08: 0000000000000004 R09: 0000000000000001
R10: 00007f52bcad10b8 R11: 0000000000000246 R12: 8421084210842109
R13: 00007ffed4e30912 R14: 00007f52bbe11aa0 R15: 000000000df72535
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
4 locks held by kworker/u8:3/52:
#0: ffff888020ebb948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888020ebb948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000bc7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000bc7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff888034ee60e0 (&type->s_umount_key#31){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
#3: ffff888034ee8b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1772 [inline]
#3: ffff888034ee8b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x1bf/0x3c0 fs/ext4/inode.c:2841
4 locks held by kworker/u8:5/136:
#0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90002d2fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90002d2fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa6d390 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffff88802c33d428 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249
3 locks held by kworker/u8:12/2999:
2 locks held by getty/4981:
#0: ffff88803008c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5210:
#0: ffff88802965b2f8 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:694 [inline]
#0: ffff88802965b2f8 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5998
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1676 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1841 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1f0/0xdf0 fs/ext4/inode.c:6131
2 locks held by syz.1.596/7879:
#0: ffff888024d5c070 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:694 [inline]
#0: ffff888024d5c070 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5998
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1676 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1841 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1f0/0xdf0 fs/ext4/inode.c:6131
2 locks held by syz.0.595/7885:
2 locks held by syz.3.594/7883:
#0: ffff8880647e3a90 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:694 [inline]
#0: ffff8880647e3a90 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5998
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1676 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1841 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1f0/0xdf0 fs/ext4/inode.c:6131
2 locks held by syz.3.594/7889:
#0: ffff888034ee6420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:559
#1: ffff888034eea160 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x2b4/0x380 fs/jbd2/transaction.c:889
2 locks held by syz.4.597/7886:
#0: ffff888061a5dd18 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:694 [inline]
#0: ffff888061a5dd18 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5998
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1676 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1841 [inline]
#1: ffff888034ee6518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1f0/0xdf0 fs/ext4/inode.c:6131
2 locks held by syz-executor/7892:
#0: ffff888034ee6420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff888044653fc8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff888044653fc8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3979
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7885 Comm: syz.0.595 Not tainted 6.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x11/0x90 kernel/kcov.c:293
Code: 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 c0 d6 03 00 <65> 8b 05 f0 47 70 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83
RSP: 0018:ffffc90004b9fd08 EFLAGS: 00000246
RAX: 1ffff11005d988ab RBX: 0000000000000000 RCX: ffff88802ecc3c00
RDX: ffff88802ecc3c00 RSI: 0000000000000000 RDI: 00007fb95900d0e8
RBP: dffffc0000000000 R08: ffffffff815b0954 R09: 1ffff92000973fb6
R10: dffffc0000000000 R11: fffff52000973fb7 R12: 0000000000000002
R13: ffff88802ecc3c00 R14: 00007fb95900d0e8 R15: 0000000000000002
FS: 00007fb95900d6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 0000000012624000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__on_sig_stack include/linux/sched/signal.h:578 [inline]
on_sig_stack include/linux/sched/signal.h:599 [inline]
do_sigaltstack+0x314/0x610 kernel/signal.c:4272
restore_altstack+0x10c/0x150 kernel/signal.c:4328
__do_sys_rt_sigreturn+0x20d/0x270 arch/x86/kernel/signal_64.c:269
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: 0033:0x7fb95817def7
Code: ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 <0f> 05 48 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89
RSP: 002b:00007fb95900d0e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fb958335f88 RCX: 00007fb95817def9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb958335f88
RBP: 00007fb958335f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb958335f8c
R13: 0000000000000000 R14: 00007ffeae053390 R15: 00007ffeae053478