INFO: task kworker/u4:5:1065 blocked for more than 143 seconds.
Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5 state:D stack:23344 pid:1065 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_connector_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_timeout+0x1e1/0x2a0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106
__synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:1283
fsnotify_connector_destroy_workfn+0x4d/0xa0 fs/notify/mark.c:208
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.4:5107 blocked for more than 143 seconds.
Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23704 pid:5107 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
synchronize_rcu_expedited+0x24f/0x780 kernel/rcu/tree_exp.h:946
namespace_unlock+0x1af/0x410 fs/namespace.c:1602
do_umount fs/namespace.c:1825 [inline]
path_umount+0x67b/0x10b0 fs/namespace.c:1907
ksys_umount fs/namespace.c:1930 [inline]
__do_sys_umount fs/namespace.c:1935 [inline]
__se_sys_umount fs/namespace.c:1933 [inline]
__x64_sys_umount+0x15d/0x190 fs/namespace.c:1933
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8584a8d537
RSP: 002b:00007fffecc24048 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8584a8d537
RDX: 00007fffecc2411b RSI: 000000000000000a RDI: 00007fffecc24110
RBP: 00007fffecc24110 R08: 00000000ffffffff R09: 00007fffecc23ee0
R10: 00005555557f78b3 R11: 0000000000000246 R12: 00007f8584ae6b24
R13: 00007fffecc251d0 R14: 00005555557f7810 R15: 00007fffecc25210
INFO: task kworker/u4:7:5424 blocked for more than 144 seconds.
Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:7 state:D stack:26152 pid:5424 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_timeout+0x1e1/0x2a0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106
__synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:1283
fsnotify_mark_destroy_workfn+0x101/0x3c0 fs/notify/mark.c:898
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.5:12593 blocked for more than 144 seconds.
Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:25040 pid:12593 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
synchronize_rcu_expedited+0x39f/0x780 kernel/rcu/tree_exp.h:961
namespace_unlock+0x1af/0x410 fs/namespace.c:1602
do_umount fs/namespace.c:1825 [inline]
path_umount+0x67b/0x10b0 fs/namespace.c:1907
ksys_umount fs/namespace.c:1930 [inline]
__do_sys_umount fs/namespace.c:1935 [inline]
__se_sys_umount fs/namespace.c:1933 [inline]
__x64_sys_umount+0x15d/0x190 fs/namespace.c:1933
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd90ce8d537
RSP: 002b:00007ffebbbd0c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd90ce8d537
RDX: 00007ffebbbd0d2b RSI: 000000000000000a RDI: 00007ffebbbd0d20
RBP: 00007ffebbbd0d20 R08: 00000000ffffffff R09: 00007ffebbbd0af0
R10: 00005555565638b3 R11: 0000000000000246 R12: 00007fd90cee6b24
R13: 00007ffebbbd1de0 R14: 0000555556563810 R15: 00007ffebbbd1e20
INFO: task syz-executor.3:16673 blocked for more than 144 seconds.
Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27920 pid:16673 ppid:5097 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
exp_funnel_lock kernel/rcu/tree_exp.h:315 [inline]
synchronize_rcu_expedited+0x6ec/0x780 kernel/rcu/tree_exp.h:946
synchronize_rcu+0x306/0x3b0 kernel/rcu/tree.c:3543
rcu_sync_enter+0x14b/0x2e0 kernel/rcu/sync.c:149
percpu_down_write+0x68/0x390 kernel/locking/percpu-rwsem.c:231
cgroup_attach_lock kernel/cgroup/cgroup.c:2437 [inline]
cgroup_procs_write_start+0x155/0x630 kernel/cgroup/cgroup.c:2939
__cgroup_procs_write+0xd7/0x650 kernel/cgroup/cgroup.c:5139
cgroup_procs_write+0x26/0x50 kernel/cgroup/cgroup.c:5175
cgroup_file_write+0x1e2/0x770 kernel/cgroup/cgroup.c:4061
kernfs_fop_write_iter+0x3f1/0x600 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2189 [inline]
do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
do_iter_write+0x182/0x700 fs/read_write.c:861
vfs_writev+0x1aa/0x630 fs/read_write.c:934
do_writev+0x133/0x2f0 fs/read_write.c:977
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9bb428c0c9
RSP: 002b:00007f9bb5001168 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f9bb43abf80 RCX: 00007f9bb428c0c9
RDX: 0000000000000001 RSI: 00000000200001c0 RDI: 0000000000000005
RBP: 00007f9bb42e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7e33989f R14: 00007f9bb5001300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
#0: ffffffff8c78df70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
#0: ffffffff8c78dc70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8c78eac0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
1 lock held by khugepaged/33:
#0: ffffffff8c887c08 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x62/0x7b0 mm/swap.c:886
8 locks held by kworker/u4:2/38:
2 locks held by kworker/u4:5/1065:
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc90004d5fda8 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
2 locks held by getty/4736:
#0: ffff88814b0ed098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900020182f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.4/5107:
#0: ffffffff8c799778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#0: ffffffff8c799778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24f/0x780 kernel/rcu/tree_exp.h:946
2 locks held by kworker/u4:7/5424:
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012477138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000340fda8 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
3 locks held by kworker/u4:11/5558:
3 locks held by kworker/0:14/8124:
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc90014c07da8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0b42e8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75
3 locks held by kworker/1:11/9330:
3 locks held by kworker/0:6/11334:
#0: ffff88814a056138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88814a056138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88814a056138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff88814a056138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff88814a056138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff88814a056138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc90003d0fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0b42e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4624
1 lock held by syz-executor.5/12593:
#0: ffffffff8c799778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8c799778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
6 locks held by syz-executor.3/16673:
#0: ffff88807574d168 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x100 fs/file.c:1046
#1: ffff88807e4b8460 (sb_writers#11){.+.+}-{0:0}, at: do_writev+0x133/0x2f0 fs/read_write.c:977
#2: ffff88807de11488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#3: ffffffff8c7d51e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0x138/0x4e0 kernel/cgroup/cgroup.c:1673
#4: ffffffff8c63a1f0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2435 [inline]
#4: ffffffff8c63a1f0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_procs_write_start+0x149/0x630 kernel/cgroup/cgroup.c:2939
#5: ffffffff8c7d4fb0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2437 [inline]
#5: ffffffff8c7d4fb0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_procs_write_start+0x155/0x630 kernel/cgroup/cgroup.c:2939
1 lock held by syz-executor.1/16696:
#0: ffffffff8e0b42e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b42e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
1 lock held by dhcpcd/16702:
#0: ffff8880440e4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff8880440e4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/16703:
#0: ffff888049130130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff888049130130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/16704:
#0: ffff88801d2ec130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88801d2ec130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/16705:
#0: ffff888033230130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff888033230130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/16706:
#0: ffff8880231d6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff8880231d6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/16707:
#0: ffff88801e4d6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88801e4d6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by syz-executor.1/16709:
#0: ffffffff8e0b42e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b42e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 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+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9330 Comm: kworker/1:11 Not tainted 6.2.0-rc2-syzkaller-00256-ga689b938df39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events p9_poll_workfn
RIP: 0010:hlock_class kernel/locking/lockdep.c:227 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4754 [inline]
RIP: 0010:__lock_acquire+0x6f8/0x56d0 kernel/locking/lockdep.c:5005
Code: 20 66 81 e2 ff 1f 0f b7 da be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 c0 da 32 91 e8 00 f6 6a 00 48 0f a3 1d b8 26 d0 0f <0f> 82 3f ff ff ff 48 c7 c0 00 da bf 91 48 c1 e8 03 42 0f b6 14 38
RSP: 0018:ffffc900052d78e8 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000875 RCX: ffffffff8162b400
RDX: fffffbfff2265b7a RSI: 0000000000000008 RDI: ffffffff9132dbc8
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff9132dbcf
R10: fffffbfff2265b79 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888035dc8240 R14: ffff888035dc8c78 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01a038130 CR3: 000000000c48e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5668 [inline]
lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
p9_pollwake+0x43/0x1d0 net/9p/trans_fd.c:534
__wake_up_common+0x147/0x650 kernel/sched/wait.c:107
dma_buf_poll_cb drivers/dma-buf/dma-buf.c:214 [inline]
dma_buf_poll+0x56f/0x700 drivers/dma-buf/dma-buf.c:278
vfs_poll include/linux/poll.h:88 [inline]
p9_fd_poll+0x113/0x2c0 net/9p/trans_fd.c:237
p9_poll_mux net/9p/trans_fd.c:629 [inline]
p9_poll_workfn+0x23b/0x4f0 net/9p/trans_fd.c:1167
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308