INFO: task syz.1.1810:13179 blocked for more than 143 seconds.
Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1810 state:D
stack:26752 pid:13179 tgid:13175 ppid:12678 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
wext_ioctl_dispatch+0x106/0x640 net/wireless/wext-core.c:1015
wext_handle_ioctl+0x15f/0x270 net/wireless/wext-core.c:1077
sock_ioctl+0x17f/0x8e0 net/socket.c:1275
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: 0033:0x7fbd42f77299
RSP: 002b:00007fbd43ca2048 EFLAGS: 00000246
ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbd43106130 RCX: 00007fbd42f77299
RDX: 0000000020000040 RSI: 0000000000008b1b RDI: 0000000000000008
RBP: 00007fbd42fe48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fbd43106130 R15: 00007fbd4322fa38
</TASK>
INFO: task syz.0.1812:13184 blocked for more than 145 seconds.
Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1812 state:D stack:27360 pid:13184 tgid:13183 ppid:12725 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
__tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
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: 0033:0x7f2265d77299
RSP: 002b:00007f2266a68048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2265f05f80 RCX: 00007f2265d77299
RDX: 0000000020000080 RSI: 00000000400454ca RDI: 0000000000000003
RBP: 00007f2265de48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2265f05f80 R15: 00007f226602fa38
</TASK>
INFO: task syz.0.1812:13185 blocked for more than 146 seconds.
Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1812 state:D stack:27392 pid:13185 tgid:13183 ppid:12725 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
__tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
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: 0033:0x7f2265d77299
RSP: 002b:00007f22657ff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2265f06058 RCX: 00007f2265d77299
RDX: 0000000000000003 RSI: 00000000400454c9 RDI: 0000000000000003
RBP: 00007f2265de48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2265f06058 R15: 00007f226602fa38
</TASK>
INFO: task syz.0.1812:13186 blocked for more than 147 seconds.
Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1812 state:D
stack:27392 pid:13186 tgid:13183 ppid:12725 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
__tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
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: 0033:0x7f2265d77299
RSP: 002b:00007f22657de048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2265f06130 RCX: 00007f2265d77299
RDX: 0000000020000040 RSI: 0000000000008927 RDI: 0000000000000003
RBP: 00007f2265de48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2265f06130 R15: 00007f226602fa38
</TASK>
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0:
ffff8880b923ea18 (&rq->__lock
){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568
3 locks held by kworker/0:0/8:
1 lock held by khungtaskd/30:
#0: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620
3 locks held by kworker/u8:3/52:
#0:
ffff88802a705148
(
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000bc7d00
((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194
4 locks held by kworker/u8:5/144:
#0:
ffff8880166e5948
(
(wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
(wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90002e27d00
(net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
(net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fc72e50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: wg_destruct+0x25/0x2e0 drivers/net/wireguard/device.c:246
2 locks held by kworker/u8:7/2502:
1 lock held by dhcpcd/4895:
#0:
ffffffff8fc7f9c8
(
rtnl_mutex
){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
2 locks held by getty/4985:
#0:
ffff88802db400a0
(
&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
5 locks held by kworker/u9:7/5238:
#0:
ffff88805ef69948 ((wq_completion)hci4#2){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3206 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1:
ffffc9000362fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
ffffc9000362fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88805b9d4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327
#3: ffff88805b9d4078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x1ea/0xde0 net/bluetooth/hci_sync.c:5491
#4: ffffffff8fdeb1a8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
#4: ffffffff8fdeb1a8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x185/0x340 net/bluetooth/hci_conn.c:1265
3 locks held by kworker/1:6/5285:
#0: ffff888015881948 ((wq_completion)events_power_efficient){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3206 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900038e7d00 ((reg_check_chans).work){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3207 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2:
ffffffff8fc7f9c8
(
rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480
3 locks held by kworker/1:10/5291:
#0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3206 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003c67d00
(deferred_process_work){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3207 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2:
ffffffff8fc7f9c8
(rtnl_mutex
){+.+.}-{3:3}
, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
4 locks held by kworker/0:5/5675:
5 locks held by kworker/0:4/12156:
1 lock held by syz-executor/12771:
#0: ffffffff8fc7f9c8
(rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
1 lock held by syz-executor/12996:
#0:
ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
7 locks held by syz-executor/13011:
#0:
ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1:
ffff888076f39c88
(
&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888022fa70f8 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8f51c8a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff88807931a0e8
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
(&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
(&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1292
#5:
ffff88807931f250
(
&devlink->lock_key
#50
){+.+.}-{3:3}
, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773
1 lock held by syz.1.1810/13179:
#0: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: wext_ioctl_dispatch+0x106/0x640 net/wireless/wext-core.c:1015
1 lock held by syz.0.1812/13184:
#0: ffffffff8fc7f9c8
(rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
1 lock held by syz.0.1812/13185:
#0:
ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
1 lock held by syz.0.1812/13186:
#0:
ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}
, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
2 locks held by syz-executor/13191:
#0: ffffffff8fc72e50
(pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/13194:
#0:
ffffffff8fc72e50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/13197:
#0: ffffffff8fc72e50
(pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}
, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
4 locks held by syz-executor/13483:
#0:
ffff88801e502420
(sb_writers
#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1:
ffff88805eac8c88
(&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888022fa70f8 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8f51c8a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
2 locks held by syz-executor/13497:
#0: ffffffff8fc72e50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}
, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
4 locks held by syz-executor/13503:
#0: ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#0: ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1:
ffff88807b3ce488
(&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888022fa70f8 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3:
ffffffff8f51c8a8
(nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
4 locks held by syz-executor/13514:
#0:
ffff88801e502420
(sb_writers
#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff88807f9b8c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888022fa70f8 (kn->active#50){.+.+}-{0:0}
, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8f51c8a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
2 locks held by syz-executor/13523:
#0:
ffffffff8fc72e50
(
pernet_ops_rwsem
){++++}-{3:3}
, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1:
ffffffff8fc7f9c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
4 locks held by syz-executor/13531:
#0: ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#0: ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff88806da53888 (&of->mutex){+.+.}-{3:3}
, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2:
ffff888022fa70f8 (kn->active#50){.+.+}-{0:0}
, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3:
ffffffff8f51c8a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}
, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
2 locks held by syz-executor/13539:
#0:
ffffffff8fc72e50
(
pernet_ops_rwsem
){++++}-{3:3}
, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7f9c8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
6 locks held by kworker/u9:2/13542:
#0:
ffff888022d65148 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
ffff888022d65148 ((wq_completion)hci6){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900042ffd00
((work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3207 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88806b94cd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327
#3:
ffff88806b94c078
(
&hdev->lock
){+.+.}-{3:3}
, at: hci_abort_conn_sync+0x1ea/0xde0 net/bluetooth/hci_sync.c:5491
#4: ffffffff8fdeb1a8 (hci_cb_list_lock){+.+.}-{3:3}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
, at: hci_conn_failed+0x185/0x340 net/bluetooth/hci_conn.c:1265
#5: ffffffff8e93cb78
(
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
4 locks held by syz-executor/13547:
#0: ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#0: ffff88801e502420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1:
ffff88802ebca488
(
&of->mutex
){+.+.}-{3:3}
, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888022fa70f8
(
kn->active
#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3:
ffffffff8f51c8a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
<TASK>
__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