watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:15445] Modules linked in: irq event stamp: 131326008 hardirqs last enabled at (131326007): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (131326007): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (131326008): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (10750190): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (10750179): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 15445 Comm: syz-executor.1 Not tainted 5.10.45 #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 ca 9c 61 fd 48 89 ef e8 52 58 62 fd f6 c7 02 75 0c 53 9d <65> ff 0d 34 e1 3c 7c 5b 5d c3 e8 2c bc 80 fd eb ed 66 2e 0f 1f 84 RSP: 0018:ffff88804b1dfd88 EFLAGS: 00000206 RAX: 0000000007d3e037 RBX: 0000000000000206 RCX: 1ffffffff0a89799 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83c50dd4 RBP: ffff8880459b8450 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff8880459b8000 R14: ffff8880459b8450 R15: ffff8880459b8000 FS: 00007feff72c7700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feff72c7718 CR3: 00000000502f0000 CR4: 0000000000350ef0 Call Trace: io_cqring_wait fs/io_uring.c:7054 [inline] __do_sys_io_uring_enter+0xded/0x1910 fs/io_uring.c:9119 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:00007feff72c7188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 0000000000466609 RDX: 00000000000074a6 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffd9db3e14f R14: 00007feff72c7300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 15438 Comm: syz-executor.5 Not tainted 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:__kasan_check_write+0x4/0x10 mm/kasan/common.c:77 Code: 00 00 0f 1f 40 00 48 c7 c0 fb ff ff ff c3 cc cc cc cc cc cc cc cc 48 8b 0c 24 89 f6 31 d2 e9 83 21 00 00 0f 1f 00 48 8b 0c 24 <89> f6 ba 01 00 00 00 e9 70 21 00 00 41 55 48 c7 c0 00 00 00 80 49 RSP: 0018:ffff88804ed87ca0 EFLAGS: 00000046 RAX: 0000000000000001 RBX: ffff88804a6a1450 RCX: ffffffff81276351 RDX: ffffed10094d428b RSI: 0000000000000004 RDI: ffff88804ed87cd0 RBP: 1ffff11009db0f96 R08: 0000000000000001 R09: ffff88804a6a1453 R10: ffffed10094d428a R11: 0000000000000001 R12: ffff88804a6a1458 R13: ffff88804a6a1460 R14: ffff88804a6a1450 R15: ffff88804ed87eb0 FS: 00007fd8298a2700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f113722b2a0 CR3: 00000000357ce000 CR4: 0000000000350ee0 Call Trace: instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:706 [inline] queued_spin_lock include/asm-generic/qspinlock.h:82 [inline] do_raw_spin_lock+0x121/0x260 kernel/locking/spinlock_debug.c:113 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0x3e/0x50 kernel/locking/spinlock.c:159 finish_wait+0xb2/0x210 kernel/sched/wait.c:380 io_cqring_wait fs/io_uring.c:7054 [inline] __do_sys_io_uring_enter+0xded/0x1910 fs/io_uring.c:9119 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:00007fd8298a2188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609 RDX: 00000000000074a6 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffd6a60339f R14: 00007fd8298a2300 R15: 0000000000022000