INFO: task kworker/0:5:21773 blocked for more than 143 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:26376 pid:21773 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 addrconf_dad_work+0xa7/0x1390 net/ipv6/addrconf.c:4088 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task kworker/1:7:24940 blocked for more than 143 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:7 state:D stack:26976 pid:24940 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task syz-executor.0:26519 blocked for more than 144 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:25264 pid:26519 ppid:5053 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 wiphy_lock include/net/cfg80211.h:5773 [inline] reg_process_self_managed_hints+0x78/0x170 net/wireless/reg.c:3181 wiphy_register+0x20e1/0x2ad0 net/wireless/core.c:983 ieee80211_register_hw+0x23c1/0x40e0 net/mac80211/main.c:1392 mac80211_hwsim_new_radio+0x26e6/0x4c70 drivers/net/wireless/virtual/mac80211_hwsim.c:5303 hwsim_new_radio_nl+0xacf/0x1210 drivers/net/wireless/virtual/mac80211_hwsim.c:5983 genl_family_rcv_msg_doit.isra.0+0x1e6/0x2d0 net/netlink/genetlink.c:970 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x4ff/0x7e0 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x165/0x440 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+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xde/0x190 net/socket.c:748 ____sys_sendmsg+0x739/0x920 net/socket.c:2494 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577 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: 0033:0x7f0546a8c389 RSP: 002b:00007f05455fe168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0546babf80 RCX: 00007f0546a8c389 RDX: 0000000000000000 RSI: 0000000020001ac0 RDI: 0000000000000004 RBP: 00007f0546ad7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc167c1ef R14: 00007f05455fe300 R15: 0000000000022000 INFO: task syz-executor.4:26539 blocked for more than 145 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:25160 pid:26539 ppid:32448 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 rtnl_lock net/core/rtnetlink.c:78 [inline] rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xde/0x190 net/socket.c:748 ____sys_sendmsg+0x739/0x920 net/socket.c:2494 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577 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: 0033:0x7f3a9e68c389 RSP: 002b:00007f3a9f3dd168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3a9e7abf80 RCX: 00007f3a9e68c389 RDX: 0000000000004840 RSI: 0000000020000380 RDI: 0000000000000005 RBP: 00007f3a9e6d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0e95102f R14: 00007f3a9f3dd300 R15: 0000000000022000 INFO: task syz-executor.4:26541 blocked for more than 146 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:25160 pid:26541 ppid:32448 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 rtnl_lock net/core/rtnetlink.c:78 [inline] rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xde/0x190 net/socket.c:748 ____sys_sendmsg+0x739/0x920 net/socket.c:2494 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577 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: 0033:0x7f3a9e68c389 RSP: 002b:00007f3a9f3bc168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3a9e7ac050 RCX: 00007f3a9e68c389 RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000003 RBP: 00007f3a9e6d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0e95102f R14: 00007f3a9f3bc300 R15: 0000000000022000 INFO: task syz-executor.3:26543 blocked for more than 146 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28216 pid:26543 ppid:5667 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x51a/0x7e0 net/netlink/genetlink.c:1065 netlink_rcv_skb+0x165/0x440 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+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xde/0x190 net/socket.c:748 ____sys_sendmsg+0x739/0x920 net/socket.c:2494 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577 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: 0033:0x7f63f8e8c389 RSP: 002b:00007f63f9c73168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f63f8fabf80 RCX: 00007f63f8e8c389 RDX: 0000000000000000 RSI: 0000000020001ac0 RDI: 0000000000000004 RBP: 00007f63f8ed7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc709975f R14: 00007f63f9c73300 R15: 0000000000022000 INFO: task syz-executor.2:26545 blocked for more than 147 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28056 pid:26545 ppid:5059 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 rtnl_lock net/core/rtnetlink.c:78 [inline] rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xde/0x190 net/socket.c:748 ____sys_sendmsg+0x739/0x920 net/socket.c:2494 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577 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: 0033:0x7fa21ba8c389 RSP: 002b:00007fa21c815168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa21bbabf80 RCX: 00007fa21ba8c389 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007fa21bad7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff46d58e7f R14: 00007fa21c815300 R15: 0000000000022000 INFO: task syz-executor.2:26551 blocked for more than 148 seconds. Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28056 pid:26551 ppid:5059 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6710 schedule+0xde/0x1a0 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+0xa3b/0x1350 kernel/locking/mutex.c:747 rtnl_lock net/core/rtnetlink.c:78 [inline] rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xde/0x190 net/socket.c:748 ____sys_sendmsg+0x739/0x920 net/socket.c:2494 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2548 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2577 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: 0033:0x7fa21ba8c389 RSP: 002b:00007fa21c7f4168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa21bbac050 RCX: 00007fa21ba8c389 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007fa21bad7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff46d58e7f R14: 00007fa21c7f4300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c9a3af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c9a37f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffffffff8c9a4700 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 2 locks held by getty/4779: #0: ffff88802d152098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf08/0x13f0 drivers/tty/n_tty.c:2187 3 locks held by kworker/u4:17/19159: 4 locks held by kworker/1:13/8109: 4 locks held by kworker/1:0/14566: 3 locks held by kworker/0:5/21773: #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567 #1: ffffc9001483fdb0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa7/0x1390 net/ipv6/addrconf.c:4088 3 locks held by kworker/0:6/22414: #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567 #1: ffffc9000e14fdb0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x82/0x1040 net/wireless/reg.c:2462 4 locks held by kworker/1:6/24938: 3 locks held by kworker/1:7/24940: #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff8880284a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567 #1: ffffc9001100fdb0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630 3 locks held by kworker/1:8/24941: 4 locks held by syz-executor.0/26519: #0: ffffffff8e468350 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077 #1: ffffffff8e468408 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff8e468408 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x51a/0x7e0 net/netlink/genetlink.c:1065 #2: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_register+0x1f53/0x2ad0 net/wireless/core.c:962 #3: ffff88808d640768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5773 [inline] #3: ffff88808d640768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_process_self_managed_hints+0x78/0x170 net/wireless/reg.c:3181 1 lock held by syz-executor.4/26539: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.4/26541: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 2 locks held by syz-executor.3/26543: #0: ffffffff8e468350 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077 #1: ffffffff8e468408 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff8e468408 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x51a/0x7e0 net/netlink/genetlink.c:1065 1 lock held by syz-executor.2/26545: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.2/26551: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.5/26568: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.0/26580: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.3/26581: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.2/26583: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.4/26588: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.2/26599: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.0/26603: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.3/26604: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.4/26605: #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3cea28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379 kthread+0x344/0x440 kernel/kthread.c:389 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: 8109 Comm: kworker/1:13 Not tainted 6.4.0-syzkaller-11989-g6843306689af #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Workqueue: events cfg80211_wiphy_work RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:59 [inline] RIP: 0010:stack_access_ok+0x9a/0x1d0 arch/x86/kernel/unwind_orc.c:393 Code: 48 c1 ea 03 80 3c 02 00 0f 85 13 01 00 00 49 39 ed 48 8b 43 10 77 1a 48 39 e8 76 15 4a 8d 54 25 00 48 39 d0 0f 93 c0 49 39 d5 <0f> 92 c2 20 d0 75 38 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffffc900001e0730 EFLAGS: 00000283 RAX: ffffc900001e1001 RBX: ffffc900001e07d8 RCX: 0000000000000002 RDX: ffffc900001e0e50 RSI: ffffc900001e0e48 RDI: ffffc900001e07e8 RBP: ffffc900001e0e48 R08: ffffffff8fc57df0 R09: ffffc900001e0e48 R10: ffffc900001e07d8 R11: 0000000000096001 R12: 0000000000000008 R13: ffffc900001d9000 R14: ffffc900001e0e50 R15: ffffc900001e080c FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0793ffee20 CR3: 00000000a699e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline] unwind_next_frame+0xabc/0x1f70 arch/x86/kernel/unwind_orc.c:585 arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:750 [inline] slab_alloc_node mm/slub.c:3470 [inline] kmem_cache_alloc_node+0x1c6/0x3e0 mm/slub.c:3515 kmalloc_reserve+0x165/0x270 net/core/skbuff.c:559 __alloc_skb+0x129/0x330 net/core/skbuff.c:644 alloc_skb include/linux/skbuff.h:1289 [inline] bcm_can_tx+0x259/0x840 net/can/bcm.c:289 bcm_tx_timeout_handler+0x230/0x5b0 net/can/bcm.c:425 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x604/0xc00 kernel/time/hrtimer.c:1752 hrtimer_run_softirq+0x17f/0x360 kernel/time/hrtimer.c:1769 __do_softirq+0x1d4/0x905 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__kmem_cache_free+0x11d/0x2d0 mm/slub.c:3815 Code: 48 89 fa 41 8b 45 28 4d 89 0c 02 4c 89 c8 4d 8b 5d 00 65 49 0f c7 0b 0f 1f 00 48 31 d7 4c 31 c8 48 09 c7 75 ba 48 8b 44 24 28 <65> 48 2b 04 25 28 00 00 00 0f 85 93 01 00 00 48 8d 65 d8 5b 41 5c RSP: 0018:ffffc9000644f9d0 EFLAGS: 00000246 RAX: 1e061d7a614a7a00 RBX: ffff8880240da800 RCX: 1ffffffff2312936 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000644fa28 R08: 0000000000000000 R09: fffffbfff230d1dd R10: 0000000000000001 R11: 0000000000096001 R12: ffffea0000903600 R13: ffff888012841dc0 R14: ffffffff899a1cac R15: 0000000000000000 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline] ieee80211_ibss_rx_queued_mgmt+0x1b6c/0x3080 net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline] ieee80211_iface_work+0xa4a/0xd70 net/mac80211/iface.c:1658 cfg80211_wiphy_work+0x253/0x330 net/wireless/core.c:435 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308