watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:13421] Modules linked in: irq event stamp: 112499084 hardirqs last enabled at (112499083): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (112499083): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (112499084): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (9038366): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (9038351): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 13421 Comm: syz-executor.4 Not tainted 5.10.56 #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 8a b8 60 fd 48 89 ef e8 a2 6e 61 fd f6 c7 02 75 0c 53 9d <65> ff 0d c4 0a 3c 7c 5b 5d c3 e8 dc dc 7f fd eb ed 66 2e 0f 1f 84 RSP: 0018:ffff88800411fd88 EFLAGS: 00000287 RAX: 0000000006b4998b RBX: 0000000000000287 RCX: 1ffffffff0a898f1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83c5e444 RBP: ffff8880696fd450 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff8880696fd000 R14: ffff8880696fd450 R15: ffff8880696fd000 FS: 00007f51f576b700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31c24000 CR3: 0000000066e3a000 CR4: 0000000000350ef0 Call Trace: io_cqring_wait fs/io_uring.c:7052 [inline] __do_sys_io_uring_enter+0xded/0x1910 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:00007f51f576b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 000000000000a349 RSI: 0000000000006828 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000020000180 R09: 0000000000000008 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe7937126f R14: 00007f51f576b300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 13413 Comm: syz-executor.0 Not tainted 5.10.56 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:check_memory_region+0x175/0x1e0 mm/kasan/generic.c:193 Code: 48 29 c2 e9 28 ff ff ff 48 89 d0 49 39 c2 75 96 49 0f be 02 41 83 e1 07 49 39 c1 7d 89 41 bb 01 00 00 00 5b 5d 44 89 d8 41 5c 48 85 d2 74 ed 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 df 80 38 RSP: 0018:ffff888057427ca0 EFLAGS: 00000097 RAX: 0000000000000001 RBX: ffff888069468450 RCX: ffffffff81275011 RDX: ffffed100ae84f9b RSI: 0000000000000004 RDI: ffff888057427cd0 RBP: 1ffff1100ae84f96 R08: 0000000000000001 R09: 0000000000000003 R10: ffffed100ae84f9a R11: 0000000000000001 R12: ffff888069468458 R13: ffff888069468460 R14: ffff888069468450 R15: ffff888057427eb0 FS: 00007ff8eb56f700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f424000 CR3: 00000000659ce000 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:385 io_cqring_wait fs/io_uring.c:7052 [inline] __do_sys_io_uring_enter+0xded/0x1910 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:00007ff8eb56f188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 000000000000a349 RSI: 0000000000006828 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000020000180 R09: 0000000000000008 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd0afcde7f R14: 00007ff8eb56f300 R15: 0000000000022000