watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:17497] Modules linked in: irq event stamp: 96049180 hardirqs last enabled at (96049179): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (96049179): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (96049180): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (5251932): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5251921): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 17497 Comm: syz-executor.0 Not tainted 5.10.109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196 Code: 08 00 00 00 4d 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 d1 fd ff ff 0f 1f 44 00 00 48 8b 34 24 <65> 48 8b 14 25 80 6f 02 00 65 8b 05 1c c0 c2 7e a9 00 01 ff 00 74 RSP: 0018:ffff888050a67d98 EFLAGS: 00000287 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000010000 RDX: 0000000000010000 RSI: ffffffff8186d6ee RDI: 0000000000000004 RBP: ffff888044a4cf00 R08: 0000000000000000 R09: ffff888052869947 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880528dd000 R14: ffff8880528dd450 R15: ffff8880528dd000 FS: 00007f010a24c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f010a24bd58 CR3: 000000003a858000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: io_should_wake fs/io_uring.c:6986 [inline] io_cqring_wait fs/io_uring.c:7074 [inline] __do_sys_io_uring_enter+0xece/0x1900 fs/io_uring.c:9145 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f010ccd6b19 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:00007f010a24c188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f010cde9f60 RCX: 00007f010ccd6b19 RDX: 00000000fffffffb RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f010cd30f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3afba01f R14: 00007f010a24c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 17520 Comm: syz-executor.0 Not tainted 5.10.109 #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_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+0x39/0x1e0 mm/kasan/generic.c:192 Code: 0f b6 c2 55 53 49 01 f1 0f 82 d4 00 00 00 e9 bc 00 00 00 48 b8 00 00 00 00 00 00 00 ff 48 39 f8 0f 87 bc 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:ffff88804ff2fad8 EFLAGS: 00000092 RAX: ffff800000000000 RBX: ffff88804ffd08b0 RCX: ffffffff812645ac RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff86555748 RBP: 0000000000000758 R08: 0000000000000000 R09: ffffffff8655574f R10: fffffbfff0caaae9 R11: 0000000000000001 R12: ffff88804ffd0000 R13: ffff88804ffd08b0 R14: 0000000000000002 R15: 0000000000040000 FS: 00007f010a20a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f010a209d58 CR3: 000000003a858000 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] hlock_class kernel/locking/lockdep.c:198 [inline] check_wait_context kernel/locking/lockdep.c:4626 [inline] __lock_acquire+0x46c/0x5b00 kernel/locking/lockdep.c:4902 lock_acquire kernel/locking/lockdep.c:5562 [inline] lock_acquire+0x197/0x490 kernel/locking/lockdep.c:5527 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159 finish_wait+0xb2/0x210 kernel/sched/wait.c:392 io_cqring_wait fs/io_uring.c:7077 [inline] __do_sys_io_uring_enter+0xded/0x1900 fs/io_uring.c:9145 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f010ccd6b19 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:00007f010a20a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f010cdea0e0 RCX: 00007f010ccd6b19 RDX: 00000000fffffffb RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f010cd30f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3afba01f R14: 00007f010a20a300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 08 00 or %al,(%rax) 2: 00 00 add %al,(%rax) 4: 4d 8b 17 mov (%r15),%r10 7: 49 8b 16 mov (%r14),%rdx a: 48 0f bd c8 bsr %rax,%rcx e: 48 63 c9 movslq %ecx,%rcx 11: e9 5e ff ff ff jmpq 0xffffff74 16: 4c 01 d2 add %r10,%rdx 19: 49 89 17 mov %rdx,(%r15) 1c: e9 d1 fd ff ff jmpq 0xfffffdf2 21: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 26: 48 8b 34 24 mov (%rsp),%rsi * 2a: 65 48 8b 14 25 80 6f mov %gs:0x26f80,%rdx <-- trapping instruction 31: 02 00 33: 65 8b 05 1c c0 c2 7e mov %gs:0x7ec2c01c(%rip),%eax # 0x7ec2c056 3a: a9 00 01 ff 00 test $0xff0100,%eax 3f: 74 .byte 0x74