INFO: task syz-executor.1:20448 blocked for more than 143 seconds.
Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26392 pid:20448 ppid:5092 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6741
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
ip_tunnel_delete_nets+0x92/0x5c0 net/ipv4/ip_tunnel.c:1121
ops_exit_list+0x125/0x170 net/core/net_namespace.c:174
setup_net+0x9bd/0xe60 net/core/net_namespace.c:356
copy_net_ns+0x31b/0x6b0 net/core/net_namespace.c:483
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
copy_namespaces+0x3b3/0x4a0 kernel/nsproxy.c:179
copy_process+0x30d3/0x7520 kernel/fork.c:2269
kernel_clone+0xeb/0x990 kernel/fork.c:2681
__do_sys_clone3+0x1cd/0x2e0 kernel/fork.c:2980
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: 0033:0x7f5f6c68c0c9
RSP: 002b:00007f5f6b1dd038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f5f6c7ac120 RCX: 00007f5f6c68c0c9
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f5f6b1dd050
RBP: 00007f5f6c6e7ae9 R08: 0000000000000000 R09: 0000000000000058
R10: 00007f5f6b1dd050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007ffc6e3881ff R14: 00007f5f6b1dd300 R15: 0000000000022000
INFO: task syz-executor.3:20456 blocked for more than 144 seconds.
Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26448 pid:20456 ppid:5093 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6741
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
ip6_tnl_exit_batch_net+0x86/0x890 net/ipv6/ip6_tunnel.c:2275
ops_exit_list+0x125/0x170 net/core/net_namespace.c:174
setup_net+0x9bd/0xe60 net/core/net_namespace.c:356
copy_net_ns+0x31b/0x6b0 net/core/net_namespace.c:483
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
copy_namespaces+0x3b3/0x4a0 kernel/nsproxy.c:179
copy_process+0x30d3/0x7520 kernel/fork.c:2269
kernel_clone+0xeb/0x990 kernel/fork.c:2681
__do_sys_clone3+0x1cd/0x2e0 kernel/fork.c:2980
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: 0033:0x7fe1ab48c0c9
RSP: 002b:00007fe1ac11e038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007fe1ab5ac120 RCX: 00007fe1ab48c0c9
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007fe1ac11e050
RBP: 00007fe1ab4e7ae9 R08: 0000000000000000 R09: 0000000000000058
R10: 00007fe1ac11e050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007ffdeba67a3f R14: 00007fe1ac11e300 R15: 0000000000022000
INFO: task syz-executor.5:20475 blocked for more than 145 seconds.
Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27688 pid:20475 ppid:5104 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6741
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
rtnl_lock net/core/rtnetlink.c:75 [inline]
rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2574
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1942
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xd3/0x120 net/socket.c:734
____sys_sendmsg+0x712/0x8c0 net/socket.c:2476
___sys_sendmsg+0x110/0x1b0 net/socket.c:2530
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2559
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: 0033:0x7fa3cb08c0c9
RSP: 002b:00007fa3c9bdd168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa3cb1ac050 RCX: 00007fa3cb08c0c9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000008
RBP: 00007fa3cb0e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffcfbeb1cf R14: 00007fa3c9bdd300 R15: 0000000000022000
INFO: task syz-executor.0:20480 blocked for more than 146 seconds.
Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27240 pid:20480 ppid:5089 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6741
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
rtnl_lock net/core/rtnetlink.c:75 [inline]
rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2574
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1942
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xd3/0x120 net/socket.c:734
____sys_sendmsg+0x712/0x8c0 net/socket.c:2476
___sys_sendmsg+0x110/0x1b0 net/socket.c:2530
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2559
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: 0033:0x7f516ce8c0c9
RSP: 002b:00007f516dbb9168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f516cfac050 RCX: 00007f516ce8c0c9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000008
RBP: 00007f516cee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc732814df R14: 00007f516dbb9300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
#0: ffffffff8c78c7f0 (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: ffffffff8c78c4f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by ksoftirqd/0/14:
1 lock held by khungtaskd/27:
#0: ffffffff8c78d340 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
1 lock held by dhcpcd/4636:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x16e/0x910 net/netlink/af_netlink.c:2365
2 locks held by getty/4743:
#0: ffff88802b5a1098 (&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
3 locks held by kworker/1:6/5159:
#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: ffffc90004f87da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xf/0x70 net/core/link_watch.c:277
3 locks held by kworker/0:8/5228:
#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: ffffc90005087da8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75
2 locks held by kworker/u4:15/5530:
2 locks held by kworker/0:9/5752:
#0: ffff8880b983b5d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:545 [inline]
#0: ffff8880b983b5d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x90/0x120 kernel/sched/core.c:530
#1: ffff8880b98287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2de/0x930 kernel/sched/psi.c:976
3 locks held by kworker/0:0/18861:
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000519fda8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa7/0x12d0 net/ipv6/addrconf.c:4088
3 locks held by kworker/1:10/20023:
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8880284b3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900037dfda8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa7/0x12d0 net/ipv6/addrconf.c:4088
2 locks held by kworker/1:13/20388:
2 locks held by syz-executor.1/20448:
#0: ffffffff8e0a4f10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f8/0x6b0 net/core/net_namespace.c:479
#1: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0x92/0x5c0 net/ipv4/ip_tunnel.c:1121
2 locks held by syz-executor.3/20456:
#0: ffffffff8e0a4f10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f8/0x6b0 net/core/net_namespace.c:479
#1: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: ip6_tnl_exit_batch_net+0x86/0x890 net/ipv6/ip6_tunnel.c:2275
1 lock held by syz-executor.5/20475:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.4/20473:
1 lock held by syz-executor.0/20480:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.1/20510:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
7 locks held by syz-executor.3/20516:
#0: ffff88802b186460 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88801e321088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff888146f65130 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7a43a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x470 drivers/net/netdevsim/bus.c:209
#4: ffff88801e4d40e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline]
#4: ffff88801e4d40e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline]
#4: ffff88801e4d40e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x700 drivers/base/dd.c:1276
#5: ffff88807ea0f338 (&devlink->lock_key#6){+.+.}-{3:3}, at: nsim_drv_remove+0x52/0x1d0 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x39/0x190 drivers/net/netdevsim/netdev.c:373
1 lock held by syz-executor.0/20533:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.5/20537:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
4 locks held by syz-executor.4/20541:
#0: ffff88802b186460 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88808a94cc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff888146f65130 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7a43a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x470 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor.1/20550:
#0: ffff88802b186460 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88808b572c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff888146f65130 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7a43a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x470 drivers/net/netdevsim/bus.c:209
1 lock held by syz-executor.3/20560:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.0/20564:
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
4 locks held by syz-executor.5/20567:
#0: ffff88802b186460 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff888017987888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff888146f65130 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7a43a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x470 drivers/net/netdevsim/bus.c:209
2 locks held by syz-executor.4/20576:
#0: ffffffff8e0a4f10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f8/0x6b0 net/core/net_namespace.c:479
#1: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:805 [inline]
#1: ffffffff8e0b8928 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x218/0x470 net/smc/smc_pnet.c:874
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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: 20 Comm: ksoftirqd/1 Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:hlock_class kernel/locking/lockdep.c:227 [inline]
RIP: 0010:__lock_acquire+0x144f/0x56d0 kernel/locking/lockdep.c:5051
Code: f8 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 c0 9a 33 91 e8 49 fa 6a 00 48 0f a3 1d 91 3a d1 0f <0f> 83 76 06 00 00 48 8d 1c 5b 48 c1 e3 06 48 81 c3 e0 9e 33 91 48
RSP: 0018:ffffc900003bea20 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000021 RCX: ffffffff81626027
RDX: fffffbfff2267359 RSI: 0000000000000008 RDI: ffffffff91339ac0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff91339ac7
R10: fffffbfff2267358 R11: 0000000000000001 R12: ffff888012dbad30
R13: ffff888012dba280 R14: ffff888012dbacb8 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c015828450 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
__debug_check_no_obj_freed lib/debugobjects.c:984 [inline]
debug_check_no_obj_freed+0xcb/0x420 lib/debugobjects.c:1027
__do_kmem_cache_free mm/slab.c:3581 [inline]
kmem_cache_free mm/slab.c:3607 [inline]
kmem_cache_free+0x1da/0x4c0 mm/slab.c:3600
__skb_ext_put+0x12b/0x2e0 net/core/skbuff.c:6683
__skb_ext_del+0xf3/0x360 net/core/skbuff.c:6650
skb_ext_del include/linux/skbuff.h:4645 [inline]
nf_bridge_info_free net/bridge/br_netfilter_hooks.c:147 [inline]
br_nf_dev_queue_xmit+0x72c/0x1e50 net/bridge/br_netfilter_hooks.c:808
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
br_nf_post_routing+0xf65/0x1c00 net/bridge/br_netfilter_hooks.c:855
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:614
nf_hook+0x3d4/0x680 include/linux/netfilter.h:257
NF_HOOK include/linux/netfilter.h:300 [inline]
br_forward_finish+0xd8/0x130 net/bridge/br_forward.c:66
br_nf_hook_thresh+0x2fb/0x3d0 net/bridge/br_netfilter_hooks.c:1042
br_nf_forward_finish+0x7d8/0xca0 net/bridge/br_netfilter_hooks.c:566
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
br_nf_forward_ip net/bridge/br_netfilter_hooks.c:636 [inline]
br_nf_forward_ip+0x10b2/0x1de0 net/bridge/br_netfilter_hooks.c:577
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:614
nf_hook+0x3d4/0x680 include/linux/netfilter.h:257
NF_HOOK include/linux/netfilter.h:300 [inline]
__br_forward+0x19a/0x580 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
br_flood+0x36b/0x460 net/bridge/br_forward.c:240
br_handle_frame_finish+0x11c7/0x1d60 net/bridge/br_input.c:210
br_nf_hook_thresh+0x2fb/0x3d0 net/bridge/br_netfilter_hooks.c:1042
br_nf_pre_routing_finish_ipv6+0x699/0xef0 net/bridge/br_netfilter_ipv6.c:207
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x41b/0x7c0 net/bridge/br_netfilter_ipv6.c:237
br_nf_pre_routing+0x1479/0x1fb0 net/bridge/br_netfilter_hooks.c:507
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
br_handle_frame+0x9cd/0x12d0 net/bridge/br_input.c:416
__netif_receive_skb_core+0xa2e/0x3940 net/core/dev.c:5376
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5480
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5596
process_backlog+0x3e4/0x810 net/core/dev.c:5924
__napi_poll+0xb8/0x770 net/core/dev.c:6485
napi_poll net/core/dev.c:6552 [inline]
net_rx_action+0xa00/0xde0 net/core/dev.c:6663
__do_softirq+0x1fb/0xadc kernel/softirq.c:571
run_ksoftirqd kernel/softirq.c:934 [inline]
run_ksoftirqd+0x31/0x60 kernel/softirq.c:926
smpboot_thread_fn+0x659/0xa20 kernel/smpboot.c:164
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308