watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:9155] Modules linked in: irq event stamp: 27842 hardirqs last enabled at (27841): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 hardirqs last disabled at (27842): [] idtentry_enter_cond_rcu+0x2e/0x50 arch/x86/entry/common.c:607 softirqs last enabled at (21862): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 softirqs last disabled at (21813): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 1 PID: 9155 Comm: syz-executor.0 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:193 Code: 0b e8 24 00 00 00 0f 0b 66 90 53 48 89 fb e8 17 00 00 00 48 8b 3d b8 b1 f8 07 48 89 de 5b e9 87 8d 3e 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0c 25 00 fe 01 00 65 8b 15 e8 81 8d 7e f7 c2 RSP: 0018:ffffc90004777858 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffff920008eef11 RCX: ffff88804f6ec300 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90004777900 R08: ffffffff81697bb6 R09: ffffed1015d06d11 R10: ffffed1015d06d11 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffffc90004777888 FS: 00007f0f5d7cf700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563246dec188 CR3: 00000000a32f5000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x316/0x450 kernel/smp.c:382 smp_call_function_many kernel/smp.c:577 [inline] smp_call_function kernel/smp.c:599 [inline] on_each_cpu+0x4d/0x1f0 kernel/smp.c:699 text_poke_sync arch/x86/kernel/alternative.c:996 [inline] text_poke_bp_batch+0x1df/0x640 arch/x86/kernel/alternative.c:1174 text_poke_flush arch/x86/kernel/alternative.c:1296 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1303 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:126 __static_key_slow_dec_cpuslocked kernel/jump_label.c:248 [inline] __static_key_slow_dec+0x109/0x140 kernel/jump_label.c:255 kvm_vcpu_destroy+0x1d/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:365 kvm_free_vcpus arch/x86/kvm/x86.c:9910 [inline] kvm_arch_destroy_vm+0x2bc/0x520 arch/x86/kvm/x86.c:10004 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:822 [inline] kvm_put_kvm+0x68b/0xd60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:843 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:866 __fput+0x2f0/0x750 fs/file_table.c:281 task_work_run+0x137/0x1c0 kernel/task_work.c:135 exit_task_work include/linux/task_work.h:25 [inline] do_exit+0x601/0x1f80 kernel/exit.c:805 do_group_exit+0x161/0x2d0 kernel/exit.c:903 get_signal+0x139b/0x1d30 kernel/signal.c:2743 do_signal+0x33/0x610 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:212 [inline] __prepare_exit_to_usermode+0xd7/0x1e0 arch/x86/entry/common.c:246 do_syscall_64+0x7f/0xe0 arch/x86/entry/common.c:368 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb29 Code: Bad RIP value. RSP: 002b:00007f0f5d7cecf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000078bfa8 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000078bfa8 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bfac R13: 00007ffc0028471f R14: 00007f0f5d7cf9c0 R15: 000000000078bfac Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 22542 Comm: syz-executor.3 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x5e/0xd0 kernel/locking/spinlock.c:191 Code: b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 f0 c7 2b 89 e8 31 7d 94 f9 48 83 3d 19 ca 0c 01 00 74 71 4c 89 f7 57 9d <0f> 1f 44 00 00 e8 18 24 5b f9 eb 40 e8 01 1f 5b f9 48 c7 c0 f0 c7 RSP: 0018:ffffc90000007d48 EFLAGS: 00000082 RAX: 1ffffffff12578fe RBX: ffffffff8b830c28 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000082 RBP: ffff88804804d1d0 R08: dffffc0000000000 R09: fffffbfff1706186 R10: fffffbfff1706186 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff11009009a3b R14: 0000000000000082 R15: ffff888093c42b40 FS: 00007feaf977b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000449cd000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_activate+0x27c/0x5f0 lib/debugobjects.c:664 debug_hrtimer_activate kernel/time/hrtimer.c:416 [inline] debug_activate kernel/time/hrtimer.c:476 [inline] enqueue_hrtimer kernel/time/hrtimer.c:965 [inline] __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x510/0x930 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0xf0/0x260 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xb9/0x130 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0xd0 kernel/locking/spinlock.c:191 Code: b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 f0 c7 2b 89 e8 ea 7c 94 f9 48 83 3d d2 c9 0c 01 00 74 2c 4c 89 f7 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 cc 8b 31 f9 65 8b 05 d1 ff e2 77 RSP: 0018:ffffc90016c47408 EFLAGS: 00000282 RAX: 1ffffffff12578fe RBX: ffff888093c42ae8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffffc90016c47600 R08: dffffc0000000000 R09: fffffbfff16334b8 R10: fffffbfff16334b8 R11: 0000000000000000 R12: ffff888093c42b40 R13: 0000000000000000 R14: 0000000000000282 R15: 161eae669b428c65 spin_unlock_irqrestore include/linux/spinlock.h:408 [inline] taprio_change+0x4245/0x51f0 net/sched/sch_taprio.c:1557 qdisc_create+0x7d1/0x1410 net/sched/sch_api.c:1246 tc_modify_qdisc+0x962/0x1d90 net/sched/sch_api.c:1662 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5460 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2469 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1329 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x519/0x800 net/socket.c:2352 ___sys_sendmsg net/socket.c:2406 [inline] __sys_sendmsg+0x2b1/0x360 net/socket.c:2439 do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb29 Code: Bad RIP value. RSP: 002b:00007feaf977ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000005027a0 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a44 R14: 00000000004cd2b2 R15: 00007feaf977b6d4