INFO: task kworker/1:0:17 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:0 D25656 17 2 0x80004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 addrconf_dad_work+0xa1/0x1000 net/ipv6/addrconf.c:4033 process_one_work+0x8ca/0x16c0 kernel/workqueue.c:2269 worker_thread+0x82/0xb50 kernel/workqueue.c:2415 kthread+0x31d/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 INFO: task kworker/1:1:22 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:1 D28240 22 2 0x80004000 Workqueue: events linkwatch_event Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 linkwatch_event+0x5/0x50 net/core/link_watch.c:242 process_one_work+0x8ca/0x16c0 kernel/workqueue.c:2269 worker_thread+0x82/0xb50 kernel/workqueue.c:2415 kthread+0x31d/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 INFO: task kworker/0:2:3726 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D26448 3726 2 0x80004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 addrconf_dad_work+0xa1/0x1000 net/ipv6/addrconf.c:4033 process_one_work+0x8ca/0x16c0 kernel/workqueue.c:2269 worker_thread+0x82/0xb50 kernel/workqueue.c:2415 kthread+0x31d/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 INFO: task kworker/1:3:4884 blocked for more than 144 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D26040 4884 2 0x80004000 Workqueue: events disconnect_work Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 disconnect_work+0xf/0x1b0 net/wireless/sme.c:664 process_one_work+0x8ca/0x16c0 kernel/workqueue.c:2269 worker_thread+0x82/0xb50 kernel/workqueue.c:2415 kthread+0x31d/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 INFO: task syz-executor.2:8677 blocked for more than 144 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D24992 8677 1 0x00000004 Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x30a/0x8d0 net/core/rtnetlink.c:5242 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:657 __sys_sendto+0x1d3/0x2b0 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto net/socket.c:1960 [inline] __x64_sys_sendto+0xd8/0x1b0 net/socket.c:1960 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41922c Code: Bad RIP value. RSP: 002b:00007ffe1919a780 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000014a4320 RCX: 000000000041922c RDX: 0000000000000020 RSI: 00000000014a4370 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe1919a7c4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000003 R14: 0000000000000000 R15: 00000000014a4370 INFO: task syz-executor.4:8682 blocked for more than 144 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D24992 8682 1 0x00000004 Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x30a/0x8d0 net/core/rtnetlink.c:5242 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:657 __sys_sendto+0x1d3/0x2b0 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto net/socket.c:1960 [inline] __x64_sys_sendto+0xd8/0x1b0 net/socket.c:1960 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41922c Code: Bad RIP value. RSP: 002b:00007ffd425f87f0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000014a4320 RCX: 000000000041922c RDX: 0000000000000040 RSI: 00000000014a4370 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd425f8834 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000003 R14: 0000000000000000 R15: 00000000014a4370 INFO: task syz-executor.0:10260 blocked for more than 145 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28760 10260 8681 0x00000004 Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 genl_family_rcv_msg+0x5d8/0xf40 net/netlink/genetlink.c:624 genl_rcv_msg+0xb3/0x160 net/netlink/genetlink.c:654 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:657 ___sys_sendmsg+0x653/0x950 net/socket.c:2311 __sys_sendmsg+0xce/0x170 net/socket.c:2356 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465d99 Code: Bad RIP value. RSP: 002b:00007f3973573188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000465d99 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0b0 R13: 00007ffe9f2c7cef R14: 00007f3973573300 R15: 0000000000022000 INFO: task syz-executor.3:10265 blocked for more than 145 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28088 10265 8674 0x00000004 Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 genl_family_rcv_msg+0x5d8/0xf40 net/netlink/genetlink.c:624 genl_rcv_msg+0xb3/0x160 net/netlink/genetlink.c:654 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:657 ___sys_sendmsg+0x653/0x950 net/socket.c:2311 __sys_sendmsg+0xce/0x170 net/socket.c:2356 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465d99 Code: Bad RIP value. RSP: 002b:00007ff50eea4188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465d99 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff96dea49f R14: 00007ff50eea4300 R15: 0000000000022000 INFO: task syz-executor.3:10271 blocked for more than 146 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28760 10271 8674 0x00004004 Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 genl_family_rcv_msg+0x5d8/0xf40 net/netlink/genetlink.c:624 genl_rcv_msg+0xb3/0x160 net/netlink/genetlink.c:654 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:657 ___sys_sendmsg+0x653/0x950 net/socket.c:2311 __sys_sendmsg+0xce/0x170 net/socket.c:2356 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465d99 Code: Bad RIP value. RSP: 002b:00007ff50ee83188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465d99 RDX: 0000000004000004 RSI: 00000000200000c0 RDI: 0000000000000005 RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007fff96dea49f R14: 00007ff50ee83300 R15: 0000000000022000 INFO: task syz-executor.3:10277 blocked for more than 146 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28760 10277 8674 0x00000004 Call Trace: schedule+0xc1/0x260 kernel/sched/core.c:4145 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4204 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8e5/0x1400 kernel/locking/mutex.c:1103 nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 genl_family_rcv_msg+0x5d8/0xf40 net/netlink/genetlink.c:624 genl_rcv_msg+0xb3/0x160 net/netlink/genetlink.c:654 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2477 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x3fc/0x5c0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x71e/0xb70 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:657 ___sys_sendmsg+0x653/0x950 net/socket.c:2311 __sys_sendmsg+0xce/0x170 net/socket.c:2356 do_syscall_64+0x8e/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465d99 Code: Bad RIP value. RSP: 002b:00007ff50ee62188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000465d99 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0b0 R13: 00007fff96dea49f R14: 00007ff50ee62300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/1:0/17: #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x7dd/0x16c0 kernel/workqueue.c:2240 #1: ffff8880b4d37e00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x811/0x16c0 kernel/workqueue.c:2244 #2: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0xa1/0x1000 net/ipv6/addrconf.c:4033 3 locks held by kworker/1:1/22: #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: process_one_work+0x7dd/0x16c0 kernel/workqueue.c:2240 #1: ffff8880b4edfe00 ((linkwatch_work).work){+.+.}, at: process_one_work+0x811/0x16c0 kernel/workqueue.c:2244 #2: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: linkwatch_event+0x5/0x50 net/core/link_watch.c:242 1 lock held by khungtaskd/1565: #0: ffffffff8a0cb2c0 (rcu_read_lock){....}, at: debug_show_all_locks+0x52/0x2be kernel/locking/lockdep.c:5335 3 locks held by kworker/0:2/3726: #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8880a57cb128 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x7dd/0x16c0 kernel/workqueue.c:2240 #1: ffff8880a9f47e00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x811/0x16c0 kernel/workqueue.c:2244 #2: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0xa1/0x1000 net/ipv6/addrconf.c:4033 3 locks held by kworker/1:3/4884: #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8880b5827d28 ((wq_completion)events){+.+.}, at: process_one_work+0x7dd/0x16c0 kernel/workqueue.c:2240 #1: ffff8880aa1f7e00 (cfg80211_disconnect_work){+.+.}, at: process_one_work+0x811/0x16c0 kernel/workqueue.c:2244 #2: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: disconnect_work+0xf/0x1b0 net/wireless/sme.c:664 1 lock held by in:imklog/8175: #0: ffff8880b47b3da0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x96/0xb0 fs/file.c:801 1 lock held by syz-executor.2/8677: #0: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x30a/0x8d0 net/core/rtnetlink.c:5242 1 lock held by syz-executor.4/8682: #0: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x30a/0x8d0 net/core/rtnetlink.c:5242 3 locks held by kworker/1:4/10040: #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8880b5836128 ((wq_completion)events_power_efficient){+.+.}, at: process_one_work+0x7dd/0x16c0 kernel/workqueue.c:2240 #1: ffff8880a1e6fe00 ((reg_check_chans).work){+.+.}, at: process_one_work+0x811/0x16c0 kernel/workqueue.c:2244 #2: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: reg_check_chans_work+0x74/0xb60 net/wireless/reg.c:2196 3 locks held by syz-executor.0/10256: 2 locks held by syz-executor.0/10260: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.3/10265: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.3/10271: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.3/10277: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.3/10280: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.3/10281: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.3/10282: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.5/10266: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.5/10273: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.5/10278: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.5/10283: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.5/10284: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.5/10286: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.1/10267: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.1/10272: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.1/10279: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.1/10285: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.1/10287: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 2 locks held by syz-executor.1/10288: #0: ffffffff8bd673e8 (cb_lock){++++}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:664 #1: ffffffff8bcae280 (rtnl_mutex){+.+.}, at: nl80211_pre_doit+0x27b/0x500 net/wireless/nl80211.c:13814 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1565 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x96/0xe0 lib/dump_stack.c:118 nmi_cpu_backtrace.cold.6+0x2e/0x33 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x183/0x1ac lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x6e7/0xce0 kernel/hung_task.c:289 kthread+0x31d/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1533 Comm: kworker/u4:4 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_tt_purge RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:84 [inline] RIP: 0010:preempt_count_sub+0x59/0x140 kernel/sched/core.c:3821 Code: 85 ea 00 00 00 8b 0d 26 c4 e0 0c 85 c9 75 1b 65 8b 05 83 e1 bd 7e 89 c2 81 e2 ff ff ff 7f 39 d3 7f 13 81 fb fe 00 00 00 76 66 db 65 01 1d 66 e1 bd 7e 5b c3 e8 07 e5 24 02 85 c0 74 f5 48 c7 RSP: 0018:ffff8880b26b7ce0 EFLAGS: 00000002 RAX: 0000000080000001 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff8e24d220 RBP: ffffffff87d3ab40 R08: 0000000000000001 R09: ffffed1012dc03ea R10: ffffed1012dc03e9 R11: ffff888096e01f4b R12: ffff8880b25e6700 R13: ffff888093fd11b8 R14: ffff8880a9665f40 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb955e8c020 CR3: 00000000b371a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __local_bh_enable_ip+0x118/0x1d0 kernel/softirq.c:192 spin_unlock_bh include/linux/spinlock.h:383 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2531 [inline] batadv_tt_purge+0x260/0xa60 net/batman-adv/translation-table.c:3802 process_one_work+0x8ca/0x16c0 kernel/workqueue.c:2269 worker_thread+0x82/0xb50 kernel/workqueue.c:2415 kthread+0x31d/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352