| TITLE: INFO: rcu detected stall in kvm_vm_compat_ioctl |
| TYPE: HANG |
| |
| [ 804.522871] INFO: rcu_sched self-detected stall on CPU |
| [ 804.529252] 1-....: (10499 ticks this GP) idle=fa6/140000000000001/0 softirq=95936/95936 fqs=5159 |
| [ 804.539091] (t=10500 jiffies g=20436 c=20435 q=6178) |
| [ 804.545042] NMI backtrace for cpu 1 |
| [ 804.549096] CPU: 1 PID: 27600 Comm: syz-executor.2 Not tainted 4.15.0 #2 |
| [ 804.556384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 804.566739] Call Trace: |
| [ 804.569694] <IRQ> |
| [ 804.571886] [<ffffffff84279082>] dump_stack+0x14d/0x20b |
| [ 804.584399] [<ffffffff84285627>] nmi_cpu_backtrace.cold+0x19/0x98 |
| [ 804.597748] [<ffffffff842855fa>] nmi_trigger_cpumask_backtrace+0x16a/0x17e |
| [ 804.605275] [<ffffffff8134aa44>] arch_trigger_cpumask_backtrace+0x14/0x20 |
| [ 804.612389] [<ffffffff815a091e>] rcu_dump_cpu_stacks+0x189/0x1d5 |
| [ 804.618969] [<ffffffff815a1623>] rcu_check_callbacks.cold+0x51c/0xc29 |
| [ 804.641740] [<ffffffff815bc2a2>] update_process_times+0x32/0x80 |
| [ 804.648033] [<ffffffff815eede0>] tick_sched_handle+0xa0/0x180 |
| [ 804.654215] [<ffffffff815ef3d4>] tick_sched_timer+0x44/0x130 |
| [ 804.660116] [<ffffffff815bff37>] __hrtimer_run_queues+0x307/0xd90 |
| [ 804.680546] [<ffffffff815c1a2a>] hrtimer_interrupt+0x2ea/0x730 |
| [ 804.686753] [<ffffffff844050f4>] smp_apic_timer_interrupt+0x144/0x5e0 |
| [ 804.693685] [<ffffffff84401cbe>] apic_timer_interrupt+0x8e/0xa0 |
| [ 804.700024] </IRQ> |
| [ 804.702566] RIP: 0010:lock_is_held_type+0xff/0x150 |
| [ 804.707490] RSP: 0018:ffff8801c13939f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12 |
| [ 804.715384] RAX: 0000000000000007 RBX: 0000000000000246 RCX: ffffc90002d1d000 |
| [ 804.722880] RDX: 0000000000000000 RSI: ffffc9001195b0a0 RDI: 0000000000000246 |
| [ 804.730637] RBP: ffff8801c1393a18 R08: ffff8801a6e88240 R09: 00000000001004d7 |
| [ 804.738556] R10: ffff8801a6e88bd8 R11: 0000000000000001 R12: 0000000000000000 |
| [ 804.746415] R13: ffff8801a6e88240 R14: dffffc0000000000 R15: ffffc9001195b000 |
| [ 804.770545] [<ffffffff81091a19>] kvm_vm_ioctl+0x719/0x1bc0 |
| [ 804.831940] [<ffffffff81092ffc>] kvm_vm_compat_ioctl+0x13c/0x23d |
| [ 804.875188] [<ffffffff81bc64dc>] compat_SyS_ioctl+0x13c/0x3410 |
| [ 804.887548] [<ffffffff8101d707>] do_fast_syscall_32+0x357/0xcd1 |
| [ 804.900965] [<ffffffff84401a9b>] entry_SYSENTER_compat+0x8b/0x9d |
| [ 804.907706] RIP: 0023:0xf7f60c69 |
| [ 804.911212] RSP: 002b:00000000f5d5c0cc EFLAGS: 00000286 ORIG_RAX: 0000000000000036 |
| [ 804.919931] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000004010aef4 |
| [ 804.927876] RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000000 |
| [ 804.935455] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 |
| [ 804.943529] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 |
| [ 804.952247] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 |
