watchdog: BUG: soft lockup - CPU#0 stuck for 280s! [syz.0.436:7522]
Modules linked in:
irq event stamp: 3544549
hardirqs last  enabled at (3544548): [<ffffffff8187e068>] handle_softirqs+0x158/0x840
hardirqs last disabled at (3544549): [<ffffffff8ba8bbce>] sysvec_apic_timer_interrupt+0xe/0xc0
softirqs last  enabled at (6732): [<ffffffff8187ea3a>] __irq_exit_rcu+0xca/0x220
softirqs last disabled at (3544547): [<ffffffff8187ea3a>] __irq_exit_rcu+0xca/0x220
CPU: 0 UID: 0 PID: 7522 Comm: syz.0.436 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:handle_softirqs+0x160/0x840
Code: 89 6c 24 20 0f b7 db 48 c7 c7 20 1d cb 8b e8 37 01 21 0a 65 66 c7 05 d5 4f b1 11 00 00 e8 c8 0c 46 00 fb 48 c7 c5 c0 a0 60 8e <b8> ff ff ff ff 0f bc c3 41 89 c6 41 ff c6 0f 84 09 04 00 00 89 5c
RSP: 0018:ffffc90000007f28 EFLAGS: 00000206
RAX: 00000000003615e4 RBX: 0000000000000008 RCX: 0000000080000100
RDX: 0000000000000003 RSI: ffffffff8dfa6837 RDI: ffffffff8c28af60
RBP: ffffffff8e60a0c0 R08: ffffffff9030b6f7 R09: 1ffffffff20616de
R10: dffffc0000000000 R11: fffffbfff20616df R12: 0000000000000000
R13: 0000000000000000 R14: ffff88811ed6ca00 R15: dffffc0000000000
FS:  00007f4dc71ee6c0(0000) GS:ffff88818dc8d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001066e0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 000000007240f3a3 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 common_interrupt+0xbb/0xe0
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40
RIP: 0010:vmx_get_gdt+0x1c/0x160
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 41 54 53 48 89 f3 e8 2d ca 69 00 b8 10 48 00 00 41 0f 78 c4 <0f> 86 00 01 00 00 e8 19 ca 69 00 49 bf 00 00 00 00 00 fc ff df 4c
RSP: 0018:ffffc9000383eed8 EFLAGS: 00000202
RAX: 0000000000004810 RBX: ffffc9000383ef80 RCX: ffff88811ed6ca00
RDX: 0000000000000000 RSI: ffffc9000383ef80 RDI: ffff88811ec2a9c0
RBP: ffffc9000383f010 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc9000383ef80 R11: ffffffff814a37c0 R12: 0000000000005000
R13: 0000000000000000 R14: 1ffff92000707de4 R15: ffffffff8bc32b78
 get_descriptor_ptr+0x131/0x440
 __load_segment_descriptor+0x4a7/0x10a0
 x86_emulate_insn+0x868/0x43d0
 x86_emulate_instruction+0xef0/0x2100
 kvm_mmu_page_fault+0x91a/0xb70
 vmx_handle_exit+0xd70/0x16f0
 vcpu_run+0x5c77/0x7860
 kvm_arch_vcpu_ioctl_run+0x11e6/0x20d0
 kvm_vcpu_ioctl+0xa62/0xfd0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4dc8f9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4dc71ee028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4dc9215fa0 RCX: 00007f4dc8f9cdd9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007f4dc9032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4dc9216038 R14: 00007f4dc9215fa0 R15: 00007ffdf09f0e58
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7513 Comm: syz.1.434 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:vmx_do_nmi_irqoff+0x13/0x20
Code: ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 83 e4 f0 6a 18 55 9c 6a 10 e8 ad a3 57 f5 <c9> c3 cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900031ef4a0 EFLAGS: 00000086
RAX: 0000000080000200 RBX: ffff8881104529c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8881104529c0
RBP: ffffc900031ef4a0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881104529c0
R13: dffffc0000000000 R14: ffffffff815d279c R15: ffff888110454a08
FS:  00007fab2a5366c0(0000) GS:ffff8882a928d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001204d0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 000000007240f3a3 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vmx_handle_nmi+0xe1/0xf0
 vmx_vcpu_enter_exit+0x11a/0x1f0
 vmx_vcpu_run+0xf9c/0x2d10
 vcpu_run+0x533d/0x7860
 kvm_arch_vcpu_ioctl_run+0x11e6/0x20d0
 kvm_vcpu_ioctl+0xa62/0xfd0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fab2959cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fab2a536028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fab29815fa0 RCX: 00007fab2959cdd9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007fab29632d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab29816038 R14: 00007fab29815fa0 R15: 00007ffd0ec9a2c8
 </TASK>
