watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:11642] Modules linked in: irq event stamp: 82073220 hardirqs last enabled at (82073219): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (82073219): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (82073220): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (139514): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (139425): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 11642 Comm: syz-executor.6 Not tainted 5.10.60 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 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: 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 7a aa 4c fd 48 89 ef e8 22 61 4d fd f6 c7 02 75 0c 53 9d <65> ff 0d 44 1b 28 7c 5b 5d c3 e8 dc bd 6b fd eb ed 66 2e 0f 1f 84 RSP: 0018:ffff888053807d00 EFLAGS: 00000202 RAX: 0000000004e45683 RBX: 0000000000000202 RCX: 1ffffffff0a8dee9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83d9d404 RBP: ffff888049dfb450 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888049dfb450 R13: 1ffff1100a700fa5 R14: 0000000000000202 R15: ffff888053807ea8 FS: 00007f41e2aee700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f41e2acd718 CR3: 00000000536b6000 CR4: 0000000000350ef0 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] prepare_to_wait_exclusive+0x129/0x2a0 kernel/sched/wait.c:266 io_cqring_wait fs/io_uring.c:7039 [inline] __do_sys_io_uring_enter+0x8fd/0x1e90 fs/io_uring.c:9116 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f41e2aee188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 000000000000dbdf RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fffba595baf R14: 00007f41e2aee300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 11641 Comm: syz-executor.0 Not tainted 5.10.60 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:strlen+0x54/0x90 lib/string.c:568 Code: 75 48 80 7d 00 00 74 39 48 bb 00 00 00 00 00 fc ff df 48 89 e8 48 83 c0 01 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 0f b6 14 1a <38> ca 7f 04 84 d2 75 1f 80 38 00 75 de 48 83 c4 08 48 29 e8 5b 5d RSP: 0018:ffff888053497b30 EFLAGS: 00000002 RAX: ffffffff842f4749 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: 0000000000000003 RSI: ffff888050b97468 RDI: ffffffff842f4740 RBP: ffffffff842f4740 R08: 0000000000000000 R09: ffffffff85472b0f R10: fffffbfff0a8e561 R11: 0000000000000001 R12: 1ffff1100a692f70 R13: ffff888053497c00 R14: 0000000000000202 R15: ffffffff84cfcb40 FS: 00007f4e1099f700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000045aea000 CR4: 0000000000350ee0 Call Trace: strlen include/linux/string.h:321 [inline] trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline] perf_trace_lock+0xb6/0x470 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x46c/0x6b0 kernel/locking/lockdep.c:5571 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_unlock_irqrestore+0x16/0x40 kernel/locking/spinlock.c:191 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] prepare_to_wait_exclusive+0x129/0x2a0 kernel/sched/wait.c:266 io_cqring_wait fs/io_uring.c:7039 [inline] __do_sys_io_uring_enter+0x8fd/0x1e90 fs/io_uring.c:9116 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4e1099f188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 000000000000dbdf RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffec0294a6f R14: 00007f4e1099f300 R15: 0000000000022000