INFO: task kworker/u4:10:6322 blocked for more than 143 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:10 state:D stack:19032 pid:6322 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
io_ring_exit_work+0x715/0x800 io_uring/io_uring.c:2912
process_one_work+0x8fa/0x1370 kernel/workqueue.c:2289
worker_thread+0xa63/0x1210 kernel/workqueue.c:2436
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.1:19956 blocked for more than 144 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24576 pid:19956 ppid:5096 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
open_last_lookups fs/namei.c:3478 [inline]
path_openat+0x7b5/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d78b1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6babf80 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d78b1300 R15: 0000000000022000
INFO: task syz-executor.1:19982 blocked for more than 145 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21512 pid:19982 ppid:5096 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
io_schedule+0x8c/0x100 kernel/sched/core.c:8871
bit_wait_io+0x12/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbd/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1d4/0x250 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:69 [inline]
lock_buffer include/linux/buffer_head.h:397 [inline]
__sync_dirty_buffer+0x120/0x380 fs/buffer.c:2732
__ext4_handle_dirty_metadata+0x2a6/0x820 fs/ext4/ext4_jbd2.c:387
ext4_handle_dirty_dirblock+0x362/0x6f0 fs/ext4/namei.c:438
ext4_finish_convert_inline_dir+0x57b/0x6f0 fs/ext4/inline.c:1181
ext4_convert_inline_data_nolock+0xa01/0xd80 fs/ext4/inline.c:1258
ext4_try_add_inline_entry+0x809/0xb70 fs/ext4/inline.c:1331
ext4_add_entry+0x535/0x1010 fs/ext4/namei.c:2385
ext4_add_nondir+0x98/0x290 fs/ext4/namei.c:2772
ext4_create+0x376/0x550 fs/ext4/namei.c:2817
lookup_open fs/namei.c:3413 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x12cb/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d7890168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6bac050 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000180 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d7890300 R15: 0000000000022000
INFO: task syz-executor.1:19986 blocked for more than 146 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27560 pid:19986 ppid:5096 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
open_last_lookups fs/namei.c:3478 [inline]
path_openat+0x7b5/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d786f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6bac120 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d786f300 R15: 0000000000022000
INFO: task syz-executor.1:19987 blocked for more than 146 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28248 pid:19987 ppid:5096 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
open_last_lookups fs/namei.c:3478 [inline]
path_openat+0x7b5/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d784e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6bac1f0 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d784e300 R15: 0000000000022000
INFO: task syz-executor.1:19988 blocked for more than 147 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27560 pid:19988 ppid:5096 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
open_last_lookups fs/namei.c:3478 [inline]
path_openat+0x7b5/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d782d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6bac2c0 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d782d300 R15: 0000000000022000
INFO: task syz-executor.1:19989 blocked for more than 147 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26312 pid:19989 ppid:5096 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
open_last_lookups fs/namei.c:3478 [inline]
path_openat+0x7b5/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d780c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6bac390 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d780c300 R15: 0000000000022000
INFO: task syz-executor.1:19990 blocked for more than 147 seconds.
Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28248 pid:19990 ppid:5096 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
open_last_lookups fs/namei.c:3478 [inline]
path_openat+0x7b5/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f05d6a8c0f9
RSP: 002b:00007f05d77eb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f05d6bac460 RCX: 00007f05d6a8c0f9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f05d6ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffadd93c2f R14: 00007f05d77eb300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25950 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf26150 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cf25780 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:5/1008:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000455fd20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by getty/4741:
#0: ffff888027964098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/5097:
#0: ffffffff8cf2ad78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8cf2ad78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ab/0x890 kernel/rcu/tree_exp.h:946
2 locks held by kworker/u4:6/5194:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc900046ffd20 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:10/5261:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc90004bafd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:13/5338:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc90005357d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:19/6835:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000341fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:20/6836:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc900033bfd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:8/16480:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc900046efd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:9/4799:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc90015fc7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
3 locks held by kworker/1:3/5449:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000324fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
#2: ffffffff8cf2ad78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#2: ffffffff8cf2ad78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x474/0x890 kernel/rcu/tree_exp.h:946
2 locks held by kworker/u4:10/6322:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc90015757d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:18/10189:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000333fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:22/10190:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc90016d67d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:24/10191:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000335fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:27/10195:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000339fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:28/10196:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc900033afd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/0:30/10198:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc900033dfd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by kworker/1:13/19495:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc90015b37d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
2 locks held by syz-executor.1/19956:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
3 locks held by syz-executor.1/19982:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
#2: ffff88807c7be518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88807c7be518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xf6/0xb70 fs/ext4/inline.c:1289
2 locks held by syz-executor.1/19986:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
2 locks held by syz-executor.1/19987:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
2 locks held by syz-executor.1/19988:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
2 locks held by syz-executor.1/19989:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
2 locks held by syz-executor.1/19990:
#0: ffff88802f002460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
#1: ffff88807c7be850 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7b5/0x2e40 fs/namei.c:3711
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e5/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b4/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf70/0xfb0 kernel/hung_task.c:377
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7972 Comm: kworker/0:12 Not tainted 6.2.0-rc8-syzkaller-00145-g5e725d112e1a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:unwind_next_frame+0x0/0x22b0 arch/x86/kernel/unwind_orc.c:442
Code: 48 83 c0 f8 eb 02 31 c0 5b 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 95 4c 89 f7 e8 c7 c6 a3 00 eb 8b 0f 1f 44 00 00 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 81 ec a8 00 00 00 48
RSP: 0018:ffffc90015567658 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90015567660 RCX: ffffffff8f903000
RDX: dffffc0000000000 RSI: ffffffff81798677 RDI: ffffc90015567660
RBP: ffffc900155676f0 R08: 0000000000000000 R09: ffffc90015567750
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802d699d40
R13: ffffffff81798720 R14: ffffc90015567740 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555574e8848 CR3: 000000000cc8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x80 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:523
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook mm/slub.c:1807 [inline]
slab_free mm/slub.c:3787 [inline]
__kmem_cache_free+0x264/0x3c0 mm/slub.c:3800
skb_free_head net/core/skbuff.c:822 [inline]
skb_release_data+0x618/0x7e0 net/core/skbuff.c:851
skb_release_all net/core/skbuff.c:916 [inline]
__kfree_skb net/core/skbuff.c:930 [inline]
consume_skb+0xac/0x150 net/core/skbuff.c:1098
nsim_dev_trap_report drivers/net/netdevsim/dev.c:824 [inline]
nsim_dev_trap_report_work+0x761/0xa90 drivers/net/netdevsim/dev.c:853
process_one_work+0x8fa/0x1370 kernel/workqueue.c:2289
worker_thread+0xa63/0x1210 kernel/workqueue.c:2436
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308