INFO: task syz-executor.4:12502 blocked for more than 143 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26608 pid:12502 ppid:5075 flags:0x20004006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 ip_tunnel_delete_nets+0x94/0x3a0 net/ipv4/ip_tunnel.c:1139 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 setup_net+0x64d/0xa40 net/core/net_namespace.c:362 copy_net_ns+0x2fa/0x670 net/core/net_namespace.c:491 create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x3da/0x930 kernel/fork.c:3438 __do_sys_unshare kernel/fork.c:3509 [inline] __se_sys_unshare kernel/fork.c:3507 [inline] __ia32_sys_unshare+0x30/0x40 kernel/fork.c:3507 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7fb3579 RSP: 002b:00000000f7fae5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000136 RAX: ffffffffffffffda RBX: 000000006c060000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.4:12503 blocked for more than 144 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26752 pid:12503 ppid:5075 flags:0x20004006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 ip6_tnl_exit_batch_net+0x86/0x6f0 net/ipv6/ip6_tunnel.c:2275 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 setup_net+0x64d/0xa40 net/core/net_namespace.c:362 copy_net_ns+0x2fa/0x670 net/core/net_namespace.c:491 create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x3da/0x930 kernel/fork.c:3438 __do_sys_unshare kernel/fork.c:3509 [inline] __se_sys_unshare kernel/fork.c:3507 [inline] __ia32_sys_unshare+0x30/0x40 kernel/fork.c:3507 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7fb3579 RSP: 002b:00000000f7f8d5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000136 RAX: ffffffffffffffda RBX: 000000006c060000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task kworker/0:10:12506 blocked for more than 144 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:10 state:D stack:28192 pid:12506 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4635 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600 worker_thread+0x687/0x1110 kernel/workqueue.c:2751 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 INFO: task syz-executor.5:12523 blocked for more than 144 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26880 pid:12523 ppid:5069 flags:0x20004006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 wiphy_lock include/net/cfg80211.h:5776 [inline] nl80211_new_interface+0xa6/0x1070 net/wireless/nl80211.c:4342 genl_family_rcv_msg_doit.isra.0+0x1ef/0x2d0 net/netlink/genetlink.c:970 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x559/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f64579 RSP: 002b:00000000f7f5f5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000400 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.5:12526 blocked for more than 145 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26880 pid:12526 ppid:5069 flags:0x20000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 genl_family_rcv_msg_doit.isra.0+0x1b1/0x2d0 net/netlink/genetlink.c:965 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x559/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f64579 RSP: 002b:00000000f7f3e5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000020000ac0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.5:12528 blocked for more than 146 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26880 pid:12528 ppid:5069 flags:0x20004006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 genl_family_rcv_msg_doit.isra.0+0x1b1/0x2d0 net/netlink/genetlink.c:965 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x559/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f64579 RSP: 002b:00000000f7f1d5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 0000000020000100 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.5:12529 blocked for more than 146 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27680 pid:12529 ppid:5069 flags:0x20000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 genl_family_rcv_msg_doit.isra.0+0x1b1/0x2d0 net/netlink/genetlink.c:965 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x559/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f64579 RSP: 002b:00000000f7efc5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00000000200001c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.3:12524 blocked for more than 147 seconds. Not tainted 6.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27744 pid:12524 ppid:5076 flags:0x20004006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 ppp_release+0x17a/0x240 drivers/net/ppp/ppp_generic.c:405 __fput+0x3f7/0xac0 fs/file_table.c:384 task_work_run+0x14d/0x240 kernel/task_work.c:179 get_signal+0x1075/0x2770 kernel/signal.c:2657 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:297 __do_fast_syscall_32+0x6d/0xe0 arch/x86/entry/common.c:181 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7eff579 RSP: 002b:00000000f7efa5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000c004743e RDX: 0000000020001400 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 4 locks held by kworker/0:1/9: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c9a67f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c9a64f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffffffff8c9a7400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 4 locks held by kworker/0:2/917: 4 locks held by kworker/0:4/4443: 2 locks held by getty/4781: #0: ffff88814ab81098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 6 locks held by kworker/1:3/5060: #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline] #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline] #0: ffff8880136b8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570 #1: ffffc9000444fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574 #2: ffff888141fa9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #2: ffff888141fa9190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x5230 drivers/usb/core/hub.c:5754 #3: ffff888023096190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #3: ffff888023096190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003 #4: ffff88807a450160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #4: ffff88807a450160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003 #5: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10177 4 locks held by kworker/0:5/5113: 4 locks held by kworker/0:6/5116: 5 locks held by kworker/0:7/5117: 2 locks held by syz-executor.4/12502: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0x94/0x3a0 net/ipv4/ip_tunnel.c:1139 2 locks held by syz-executor.4/12503: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: ip6_tnl_exit_batch_net+0x86/0x6f0 net/ipv6/ip6_tunnel.c:2275 3 locks held by kworker/0:10/12506: #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570 #1: ffffc90004ebfd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574 #2: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4635 3 locks held by kworker/1:0/12507: #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline] #0: ffff88802853a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570 #1: ffffc90004f4fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574 #2: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4635 3 locks held by syz-executor.5/12523: #0: ffffffff8e47b270 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 #2: ffff888079720768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5776 [inline] #2: ffff888079720768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: nl80211_new_interface+0xa6/0x1070 net/wireless/nl80211.c:4342 2 locks held by syz-executor.5/12526: #0: ffffffff8e47b270 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 2 locks held by syz-executor.5/12528: #0: ffffffff8e47b270 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 2 locks held by syz-executor.5/12529: #0: ffffffff8e47b270 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb4/0xb00 net/wireless/nl80211.c:16424 1 lock held by syz-executor.3/12524: #0: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: ppp_release+0x17a/0x240 drivers/net/ppp/ppp_generic.c:405 6 locks held by kworker/0:13/12546: 1 lock held by syz-executor.1/12560: #0: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6442 2 locks held by syz-executor.4/12569: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline] #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x230 net/smc/smc_pnet.c:878 2 locks held by syz-executor.3/12579: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline] #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x230 net/smc/smc_pnet.c:878 2 locks held by syz-executor.5/12581: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline] #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x230 net/smc/smc_pnet.c:878 2 locks held by syz-executor.4/12586: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline] #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x230 net/smc/smc_pnet.c:878 2 locks held by syz-executor.3/12591: #0: ffffffff8e3cc250 ( pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline] #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x230 net/smc/smc_pnet.c:878 2 locks held by syz-executor.5/12595: #0: ffffffff8e3cc250 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487 #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline] #1: ffffffff8e3e1228 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x136/0x230 net/smc/smc_pnet.c:878 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2ac/0x310 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+0xf29/0x11b0 kernel/hung_task.c:379 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: events cfg80211_wiphy_work RIP: 0010:check_preemption_disabled+0x2/0xe0 lib/smp_processor_id.c:13 Code: 79 04 85 c0 74 18 65 8b 05 2b 08 d0 75 85 c0 75 0d 65 8b 05 3c 05 d0 75 85 c0 74 02 0f 0b e9 85 fc ff ff 0f 1f 44 00 00 41 54 <55> 53 48 83 ec 08 65 8b 1d 0d 38 d1 75 65 8b 05 02 38 d1 75 a9 ff RSP: 0018:ffffc90000006888 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888016670be0 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8a6c8380 RDI: ffffffff8ac813c0 RBP: ffffffff8e3e1228 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 000000000000004e R12: ffff888016670000 R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002057f000 CR3: 000000000c776000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline] lock_is_held_type+0xdc/0x140 kernel/locking/lockdep.c:5833 lock_is_held include/linux/lockdep.h:288 [inline] lockdep_rtnl_is_held+0x1b/0x30 net/core/rtnetlink.c:176 __in6_dev_get include/net/addrconf.h:315 [inline] ip6_ignore_linkdown include/net/addrconf.h:406 [inline] find_match+0x333/0xf40 net/ipv6/route.c:740 __find_rr_leaf+0x141/0xe00 net/ipv6/route.c:828 find_rr_leaf net/ipv6/route.c:849 [inline] rt6_select net/ipv6/route.c:893 [inline] fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2181 ip6_pol_route+0x1c1/0x1220 net/ipv6/route.c:2217 pol_lookup_func include/net/ip6_fib.h:576 [inline] fib6_rule_lookup+0x11e/0x5f0 net/ipv6/fib6_rules.c:116 ip6_route_input_lookup net/ipv6/route.c:2286 [inline] ip6_route_input+0x5d9/0xbb0 net/ipv6/route.c:2582 ip6_rcv_finish_core.constprop.0+0x1a0/0x5d0 net/ipv6/ip6_input.c:66 ip6_rcv_finish+0x12f/0x2c0 net/ipv6/ip6_input.c:77 ip_sabotage_in+0x224/0x2a0 net/bridge/br_netfilter_hooks.c:880 nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline] nf_hook_slow+0xbf/0x1e0 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:258 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ipv6_rcv+0x32f/0x6f0 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5452 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5566 netif_receive_skb_internal net/core/dev.c:5652 [inline] netif_receive_skb+0x135/0x7b0 net/core/dev.c:5711 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] br_pass_frame_up+0x30b/0x760 net/bridge/br_input.c:68 br_handle_frame_finish+0xca4/0x1dd0 net/bridge/br_input.c:216 br_nf_hook_thresh+0x2ff/0x410 net/bridge/br_netfilter_hooks.c:1048 br_nf_pre_routing_finish_ipv6+0x683/0xf20 net/bridge/br_netfilter_ipv6.c:148 NF_HOOK include/linux/netfilter.h:303 [inline] br_nf_pre_routing_ipv6+0x41b/0x850 net/bridge/br_netfilter_ipv6.c:178 br_nf_pre_routing+0x8d8/0x1950 net/bridge/br_netfilter_hooks.c:508 nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline] nf_hook_bridge_pre net/bridge/br_input.c:272 [inline] br_handle_frame+0x9da/0x16d0 net/bridge/br_input.c:417 __netif_receive_skb_core.constprop.0+0xa78/0x3df0 net/core/dev.c:5346 __netif_receive_skb_one_core+0xaf/0x180 net/core/dev.c:5450 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5566 process_backlog+0x101/0x6c0 net/core/dev.c:5894 __napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6460 napi_poll net/core/dev.c:6527 [inline] net_rx_action+0x956/0xe90 net/core/dev.c:6660 __do_softirq+0x218/0x965 kernel/softirq.c:553 do_softirq kernel/softirq.c:454 [inline] do_softirq+0xaa/0xe0 kernel/softirq.c:441 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381 spin_unlock_bh include/linux/spinlock.h:396 [inline] cfg80211_inform_single_bss_frame_data+0x835/0xf30 net/wireless/scan.c:2887 cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2912 ieee80211_bss_info_update+0x37b/0x9a0 net/mac80211/scan.c:211 ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline] ieee80211_ibss_rx_queued_mgmt+0x195f/0x2ee0 net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline] ieee80211_iface_work+0xa1f/0xd40 net/mac80211/iface.c:1658 cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600 worker_thread+0x687/0x1110 kernel/workqueue.c:2751 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304