watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kworker/1:2:67] Modules linked in: irq event stamp: 50769266 hardirqs last enabled at (50769265): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (50769265): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (50769266): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (50618040): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (50618035): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 67 Comm: kworker/1:2 Not tainted 5.10.158 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: events rtc_timer_do_work RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:84 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191 Code: 3e 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 9a e7 44 fd 48 89 ef e8 72 a1 45 fd f6 c7 02 75 10 53 9d <65> ff 0d 24 5f 20 7c 5b 5d e9 dd 2f 3e 00 e8 88 73 64 fd eb e9 66 RSP: 0018:ffff88800dc9fb58 EFLAGS: 00000293 RAX: 000000000306ad71 RBX: 0000000000000293 RCX: 1ffffffff0cf6222 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e21028 RBP: ffff8880095f2650 R08: 0000000000000001 R09: ffffffff867936af R10: fffffbfff0cf26d5 R11: 0000000000000001 R12: ffff8880095f2740 R13: 19ebe9dba1fca000 R14: ffff8880095f2758 R15: ffffffff82e48f40 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1ccd55386b CR3: 0000000004e26000 CR4: 0000000000350ee0 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] rtc_handle_legacy_irq drivers/rtc/interface.c:627 [inline] rtc_uie_update_irq+0x5c/0xa0 drivers/rtc/interface.c:652 rtc_timer_do_work+0x1cc/0xe20 drivers/rtc/interface.c:927 process_one_work+0x9a9/0x1590 kernel/workqueue.c:2279 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:689 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 0f 1f 00 nopl (%rax) 3: 55 push %rbp 4: 48 89 fd mov %rdi,%rbp 7: 48 83 c7 18 add $0x18,%rdi b: 53 push %rbx c: 48 89 f3 mov %rsi,%rbx f: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 14: e8 9a e7 44 fd callq 0xfd44e7b3 19: 48 89 ef mov %rbp,%rdi 1c: e8 72 a1 45 fd callq 0xfd45a193 21: f6 c7 02 test $0x2,%bh 24: 75 10 jne 0x36 26: 53 push %rbx 27: 9d popfq * 28: 65 ff 0d 24 5f 20 7c decl %gs:0x7c205f24(%rip) # 0x7c205f53 <-- trapping instruction 2f: 5b pop %rbx 30: 5d pop %rbp 31: e9 dd 2f 3e 00 jmpq 0x3e3013 36: e8 88 73 64 fd callq 0xfd6473c3 3b: eb e9 jmp 0x26 3d: 66 data16