watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.1:5584] Modules linked in: irq event stamp: 53060186 hardirqs last enabled at (53060185): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (53060185): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (53060186): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (20468): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (20403): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5584 Comm: syz-executor.1 Not tainted 5.10.157 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 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: 3e 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 6a e4 44 fd 48 89 ef e8 42 9e 45 fd f6 c7 02 75 10 53 9d <65> ff 0d 44 5f 20 7c 5b 5d e9 fd 2f 3e 00 e8 58 71 64 fd eb e9 66 RSP: 0018:ffff8880364bfd88 EFLAGS: 00000206 RAX: 000000000329a259 RBX: 0000000000000206 RCX: 1ffffffff0acdb29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e21008 RBP: ffff88800c4d5450 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff88800c4d5000 R14: ffff88800c4d5450 R15: ffff88800c4d5000 FS: 00007f86ea08c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7131247c70 CR3: 000000004585c000 CR4: 0000000000350ef0 Call Trace: io_cqring_wait fs/io_uring.c:7055 [inline] __do_sys_io_uring_enter+0xdf1/0x1920 fs/io_uring.c:9131 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f86ecb58b19 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:00007f86ea08c188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f86ecc6c0e0 RCX: 00007f86ecb58b19 RDX: 0000000000004220 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f86ecbb2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8c03de0f R14: 00007f86ea08c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5560 Comm: syz-executor.1 Not tainted 5.10.157 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:34 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0x39/0x1f0 mm/kasan/generic.c:192 Code: 0f b6 c2 55 53 49 01 f1 0f 82 d8 00 00 00 e9 c0 00 00 00 48 b8 00 00 00 00 00 00 00 ff 48 39 f8 0f 87 c0 00 00 00 49 83 e9 01 <48> 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 RSP: 0018:ffff8880467b7c38 EFLAGS: 00000096 RAX: ffff800000000000 RBX: 1ffff11008cf6f8d RCX: ffffffff8126fbaf RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff85670d08 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff85670d0f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88801fa11468 R15: 0000000000000000 FS: 00007f86ea0ce700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d722000 CR3: 000000004585c000 CR4: 0000000000350ee0 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] cpumask_test_cpu include/linux/cpumask.h:367 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0xaf/0x490 kernel/locking/lockdep.c:5536 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x60 kernel/locking/spinlock.c:159 finish_wait+0xb2/0x210 kernel/sched/wait.c:392 io_cqring_wait fs/io_uring.c:7055 [inline] __do_sys_io_uring_enter+0xdf1/0x1920 fs/io_uring.c:9131 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f86ecb58b19 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:00007f86ea0ce188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f86ecc6bf60 RCX: 00007f86ecb58b19 RDX: 0000000000004220 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f86ecbb2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8c03de0f R14: 00007f86ea0ce300 R15: 0000000000022000 hpet_rtc_timer_reinit: 30 callbacks suppressed hpet: Lost 2 RTC interrupts hpet: Lost 3 RTC interrupts ---------------- 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 6a e4 44 fd callq 0xfd44e483 19: 48 89 ef mov %rbp,%rdi 1c: e8 42 9e 45 fd callq 0xfd459e63 21: f6 c7 02 test $0x2,%bh 24: 75 10 jne 0x36 26: 53 push %rbx 27: 9d popfq * 28: 65 ff 0d 44 5f 20 7c decl %gs:0x7c205f44(%rip) # 0x7c205f73 <-- trapping instruction 2f: 5b pop %rbx 30: 5d pop %rbp 31: e9 fd 2f 3e 00 jmpq 0x3e3033 36: e8 58 71 64 fd callq 0xfd647193 3b: eb e9 jmp 0x26 3d: 66 data16