INFO: task kworker/1:1:25 blocked for more than 143 seconds. Not tainted 5.15.0-rc6-next-20211020-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:26624 pid: 25 ppid: 2 flags:0x00004000 Workqueue: events_power_efficient reg_check_chans_work Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 reg_check_chans_work+0x83/0xe10 net/wireless/reg.c:2423 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.5:9868 can't die for more than 143 seconds. task:syz-executor.5 state:D stack:27944 pid: 9868 ppid: 6892 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f31de436a39 RSP: 002b:00007f31db9ac188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f31de539f60 RCX: 00007f31de436a39 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000008 RBP: 00007f31de490c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8161f42f R14: 00007f31db9ac300 R15: 0000000000022000 INFO: task syz-executor.5:9868 blocked for more than 143 seconds. Not tainted 5.15.0-rc6-next-20211020-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27944 pid: 9868 ppid: 6892 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f31de436a39 RSP: 002b:00007f31db9ac188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f31de539f60 RCX: 00007f31de436a39 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000008 RBP: 00007f31de490c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8161f42f R14: 00007f31db9ac300 R15: 0000000000022000 INFO: task syz-executor.5:9894 can't die for more than 144 seconds. task:syz-executor.5 state:D stack:27944 pid: 9894 ppid: 6892 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f31de436a39 RSP: 002b:00007f31db96a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f31de53a0e0 RCX: 00007f31de436a39 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000008 RBP: 00007f31de490c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8161f42f R14: 00007f31db96a300 R15: 0000000000022000 INFO: task syz-executor.5:9894 blocked for more than 144 seconds. Not tainted 5.15.0-rc6-next-20211020-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27944 pid: 9894 ppid: 6892 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f31de436a39 RSP: 002b:00007f31db96a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f31de53a0e0 RCX: 00007f31de436a39 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000008 RBP: 00007f31de490c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8161f42f R14: 00007f31db96a300 R15: 0000000000022000 INFO: task syz-executor.4:9871 can't die for more than 144 seconds. task:syz-executor.4 state:D stack:26120 pid: 9871 ppid: 6574 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 dev_deactivate_many+0x710/0xc60 net/sched/sch_generic.c:1302 dev_deactivate+0xe9/0x1b0 net/sched/sch_generic.c:1312 qdisc_graft+0xdac/0x1260 net/sched/sch_api.c:1061 tc_modify_qdisc+0xb92/0x1980 net/sched/sch_api.c:1671 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f20c69a39 RSP: 002b:00007f5f1e1df188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f5f20d6cf60 RCX: 00007f5f20c69a39 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000004 RBP: 00007f5f20cc3c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe86ba5e9f R14: 00007f5f1e1df300 R15: 0000000000022000 INFO: task syz-executor.2:9877 can't die for more than 145 seconds. task:syz-executor.2 state:D stack:28688 pid: 9877 ppid: 6562 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521 sock_do_ioctl+0x15a/0x230 net/socket.c:1132 sock_ioctl+0x2f1/0x640 net/socket.c:1235 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3109fbda39 RSP: 002b:00007f3107533188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f310a0c0f60 RCX: 00007f3109fbda39 RDX: 0000000020000080 RSI: 0000000000008946 RDI: 0000000000000005 RBP: 00007f310a017c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff55512fcf R14: 00007f3107533300 R15: 0000000000022000 INFO: task syz-executor.2:9877 blocked for more than 145 seconds. Not tainted 5.15.0-rc6-next-20211020-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28688 pid: 9877 ppid: 6562 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378 __mutex_lock_common kernel/locking/mutex.c:672 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732 dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521 sock_do_ioctl+0x15a/0x230 net/socket.c:1132 sock_ioctl+0x2f1/0x640 net/socket.c:1235 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3109fbda39 RSP: 002b:00007f3107533188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f310a0c0f60 RCX: 00007f3109fbda39 RDX: 0000000020000080 RSI: 0000000000008946 RDI: 0000000000000005 RBP: 00007f310a017c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff55512fcf R14: 00007f3107533300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/1:1/25: #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268 #1: ffffc90000dffdb0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272 #2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x83/0xe10 net/wireless/reg.c:2423 1 lock held by khungtaskd/27: #0: ffffffff8bb835a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 3 locks held by kworker/u4:5/1016: 3 locks held by kworker/1:2/1410: #0: ffff88814ac9f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88814ac9f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88814ac9f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88814ac9f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88814ac9f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88814ac9f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268 #1: ffffc9000557fdb0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272 #2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590 1 lock held by in:imklog/6235: 1 lock held by syz-executor.5/9868: #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 1 lock held by syz-executor.5/9894: #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 1 lock held by syz-executor.4/9871: #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 1 lock held by syz-executor.2/9877: #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc6-next-20211020-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline] watchdog+0xcb7/0xed0 kernel/hung_task.c:339 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 14 Comm: rcu_preempt Not tainted 5.15.0-rc6-next-20211020-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_usage kernel/locking/lockdep.c:4496 [inline] RIP: 0010:__lock_acquire+0x1173/0x54a0 kernel/locking/lockdep.c:4981 Code: 49 49 90 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c7 3f 00 00 8b 05 ec 02 ed 0e 85 c0 0f 84 e1 01 00 00 31 ed e9 27 f3 ff ff <65> 8b 05 6e 30 a6 7e 85 c0 0f 85 0e 03 00 00 48 b8 00 00 00 00 00 RSP: 0018:ffffc90000d378b0 EFLAGS: 00000046 RAX: 000000000000000c RBX: 0000000000000000 RCX: 1ffff11027fc74ec RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88813fe3a789 RBP: ffff88813fe3a78a R08: 0000000000000000 R09: ffffffff8ff46a07 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88813fe3a768 R13: ffff88813fe39d00 R14: 0000000000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3cc20fb018 CR3: 000000000b88e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5637 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 debug_object_assert_init lib/debugobjects.c:877 [inline] debug_object_assert_init+0x101/0x2e0 lib/debugobjects.c:866 debug_timer_assert_init kernel/time/timer.c:739 [inline] debug_assert_init kernel/time/timer.c:784 [inline] try_to_del_timer_sync+0x6d/0x110 kernel/time/timer.c:1229 del_timer_sync+0x138/0x1b0 kernel/time/timer.c:1382 schedule_timeout+0x152/0x2a0 kernel/time/timer.c:1882 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1966 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2139 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 49 rex.WB 1: 49 90 xchg %rax,%r8 3: 83 e0 07 and $0x7,%eax 6: 83 c0 03 add $0x3,%eax 9: 38 d0 cmp %dl,%al b: 7c 08 jl 0x15 d: 84 d2 test %dl,%dl f: 0f 85 c7 3f 00 00 jne 0x3fdc 15: 8b 05 ec 02 ed 0e mov 0xeed02ec(%rip),%eax # 0xeed0307 1b: 85 c0 test %eax,%eax 1d: 0f 84 e1 01 00 00 je 0x204 23: 31 ed xor %ebp,%ebp 25: e9 27 f3 ff ff jmpq 0xfffff351 * 2a: 65 8b 05 6e 30 a6 7e mov %gs:0x7ea6306e(%rip),%eax # 0x7ea6309f <-- trapping instruction 31: 85 c0 test %eax,%eax 33: 0f 85 0e 03 00 00 jne 0x347 39: 48 rex.W 3a: b8 00 00 00 00 mov $0x0,%eax