INFO: task dhcpcd:4739 blocked for more than 143 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:22296 pid:4739 tgid:4739 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
netlink_dump+0x5d3/0xe50 net/netlink/af_netlink.c:2265
__netlink_dump_start+0x59d/0x780 net/netlink/af_netlink.c:2383
netlink_dump_start include/linux/netlink.h:340 [inline]
rtnetlink_rcv_msg+0xcf7/0x10d0 net/core/rtnetlink.c:6554
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8e0/0xcb0 net/netlink/af_netlink.c:1902
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fe8465a7a4b
RSP: 002b:00007ffd36214998 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000561aa658877c RCX: 00007fe8465a7a4b
RDX: 0000000000000000 RSI: 00007ffd362149e0 RDI: 000000000000000f
RBP: 00007ffd3621cff8 R08: 00007ffd36218be8 R09: 00007ffd36218be8
R10: 0000561aa6979970 R11: 0000000000000246 R12: 000000000000000f
R13: 00007ffd36218be8 R14: 00007ffd36218bc8 R15: 00007ffd36218de7
INFO: task kworker/0:11:6747 blocked for more than 143 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:11 state:D stack:22352 pid:6747 tgid:6747 ppid:2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
linkwatch_event+0xe/0x60 net/core/link_watch.c:276
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INFO: task kworker/0:13:6752 blocked for more than 143 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:13 state:D stack:22896 pid:6752 tgid:6752 ppid:2 flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INFO: task syz-executor.0:27136 blocked for more than 144 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20984 pid:27136 tgid:27136 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
kernfs_fop_write_iter+0x3a4/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2087 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f5fbc87caef
RSP: 002b:00007ffe600ecec0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5fbc87caef
RDX: 0000000000000003 RSI: 00007ffe600ecf10 RDI: 0000000000000005
RBP: 00007f5fbc8ca045 R08: 0000000000000000 R09: 00007ffe600ecd17
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007ffe600ecf10 R14: 00007f5fbd4d4620 R15: 0000000000000003
INFO: task syz-executor.3:27140 blocked for more than 144 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:20984 pid:27140 tgid:27140 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
kernfs_fop_write_iter+0x3a4/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2087 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8c5a67caef
RSP: 002b:00007ffd2ed3b2b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8c5a67caef
RDX: 0000000000000003 RSI: 00007ffd2ed3b300 RDI: 0000000000000005
RBP: 00007f8c5a6ca045 R08: 0000000000000000 R09: 00007ffd2ed3b107
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007ffd2ed3b300 R14: 00007f8c5b2d4620 R15: 0000000000000003
INFO: task syz-executor.2:27144 blocked for more than 144 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:20984 pid:27144 tgid:27144 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
nsim_destroy+0x40/0x260 drivers/net/netdevsim/netdev.c:451
__nsim_dev_port_del+0x14b/0x1b0 drivers/net/netdevsim/dev.c:1425
nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1437 [inline]
nsim_dev_reload_destroy+0x28a/0x490 drivers/net/netdevsim/dev.c:1658
nsim_drv_remove+0x58/0x160 drivers/net/netdevsim/dev.c:1673
device_remove drivers/base/dd.c:567 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4a9/0x7c0 drivers/base/dd.c:1295
bus_remove_device+0x34f/0x420 drivers/base/bus.c:574
device_del+0x580/0xa30 drivers/base/core.c:3828
device_unregister+0x20/0xc0 drivers/base/core.c:3869
nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline]
del_device_store+0x363/0x480 drivers/net/netdevsim/bus.c:226
kernfs_fop_write_iter+0x3a4/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2087 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fe21dc7caef
RSP: 002b:00007ffdb185d870 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fe21dc7caef
RDX: 0000000000000001 RSI: 00007ffdb185d8c0 RDI: 0000000000000005
RBP: 00007fe21dcca021 R08: 0000000000000000 R09: 00007ffdb185d6c7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffdb185d8c0 R14: 00007fe21e8d4620 R15: 0000000000000003
INFO: task syz-executor.1:27147 blocked for more than 144 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:20984 pid:27147 tgid:27147 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
kernfs_fop_write_iter+0x3a4/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2087 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f10c7e7caef
RSP: 002b:00007ffe1d7f4100 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f10c7e7caef
RDX: 0000000000000003 RSI: 00007ffe1d7f4150 RDI: 0000000000000005
RBP: 00007f10c7eca045 R08: 0000000000000000 R09: 00007ffe1d7f3f57
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007ffe1d7f4150 R14: 00007f10c8ad4620 R15: 0000000000000003
INFO: task syz-executor.4:27151 blocked for more than 145 seconds.
Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:20984 pid:27151 tgid:27151 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
kernfs_fop_write_iter+0x3a4/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2087 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f9e8707caef
RSP: 002b:00007ffe8eea86a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f9e8707caef
RDX: 0000000000000003 RSI: 00007ffe8eea86f0 RDI: 0000000000000005
RBP: 00007f9e870ca045 R08: 0000000000000000 R09: 00007ffe8eea84f7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007ffe8eea86f0 R14: 00007f9e87cd4620 R15: 0000000000000003
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:4/65:
#0: ffff88802a368d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88802a368d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc900015f7d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc900015f7d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733
2 locks held by dhcpcd/4739:
#0: ffff88801ba93678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0x119/0x780 net/netlink/af_netlink.c:2347
#1: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0x5d3/0xe50 net/netlink/af_netlink.c:2265
2 locks held by getty/4827:
#0: ffff88802adfe0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/u5:5/5115:
#0: ffff888085efe538 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888085efe538 ((wq_completion)hci0){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90003ee7d20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90003ee7d20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffff888034b25060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:305
5 locks held by kworker/u4:9/10096:
#0: ffff888015ea4938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888015ea4938 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000a3b7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000a3b7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f36c9d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591
#3: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: cleanup_net+0x6af/0xcc0 net/core/net_namespace.c:627
#4: ffffffff8e136440 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x550 kernel/rcu/tree.c:4064
3 locks held by kworker/0:11/6747:
#0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000a2afd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000a2afd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
3 locks held by kworker/0:13/6752:
#0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000a0dfd20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000a0dfd20 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
4 locks held by syz-executor.0/27136:
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2794 [inline]
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff888023aae088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff8880230d23a8 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecb8488 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
4 locks held by syz-executor.3/27140:
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2794 [inline]
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff888031269488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff8880230d23a8 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecb8488 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
7 locks held by syz-executor.2/27144:
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2794 [inline]
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff88805b2a5888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff8880230d2490 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecb8488 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff88801cf1e0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88801cf1e0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88801cf1e0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1292
#5: ffff888045d42250 (&devlink->lock_key#4){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x40/0x260 drivers/net/netdevsim/netdev.c:451
4 locks held by syz-executor.1/27147:
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2794 [inline]
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff88808b3e6c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff8880230d23a8 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecb8488 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
4 locks held by syz-executor.4/27151:
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2794 [inline]
#0: ffff88802f21e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff888045900088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff8880230d23a8 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecb8488 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
1 lock held by syz-executor.0/27244:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.3/27248:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.2/27253:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.1/27256:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.4/27259:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.0/27263:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.3/27272:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.2/27277:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.1/27280:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
1 lock held by syz-executor.4/27283:
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f379048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6595
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10089 Comm: kworker/u4:2 Not tainted 6.8.0-rc7-syzkaller-02088-g15d2540e0d62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:find_held_lock kernel/locking/lockdep.c:5244 [inline]
RIP: 0010:__lock_release kernel/locking/lockdep.c:5429 [inline]
RIP: 0010:lock_release+0x246/0x9d0 kernel/locking/lockdep.c:5774
Code: 44 24 38 8d 58 ff 4d 8d b5 c0 0a 00 00 4c 63 e3 41 83 fc 31 0f 83 ea 05 00 00 4f 8d 2c a4 4f 8d 3c ee 4c 89 ff 48 8b 74 24 20 45 44 fa 09 89 5c 24 44 89 da 85 c0 0f 84 05 02 00 00 4d 85 ff
RSP: 0018:ffffc9000a367a60 EFLAGS: 00000087
RAX: 0000000000000003 RBX: 0000000000000002 RCX: ffffc9000a367a03
RDX: 1ffff9200146cf5c RSI: ffffffff8e130be0 RDI: ffff88802aaa8b10
RBP: ffffc9000a367b88 R08: ffffffff8f8600ef R09: 1ffffffff1f0c01d
R10: dffffc0000000000 R11: fffffbfff1f0c01e R12: 0000000000000002
R13: 000000000000000a R14: ffff88802aaa8ac0 R15: ffff88802aaa8b10
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559327502830 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:308 [inline]
rcu_read_unlock include/linux/rcupdate.h:783 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x290/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243