| TITLE: INFO: rcu detected stall in kvm_vcpu_ioctl |
| TYPE: HANG |
| |
| [ 328.823841] rcu: INFO: rcu_preempt self-detected stall on CPU |
| [ 328.830097] rcu: 1-...!: (3 GPs behind) idle=19a/1/0x4000000000000002 softirq=12356/12357 fqs=2 |
| [ 328.839607] rcu: (t=10500 jiffies g=12045 q=155) |
| [ 328.844567] rcu: rcu_preempt kthread starved for 10492 jiffies! g12045 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 |
| [ 328.855046] rcu: RCU grace-period kthread stack dump: |
| [ 328.860235] rcu_preempt R running task 22872 10 2 0x80000000 |
| [ 328.867450] Call Trace: |
| [ 328.870074] __schedule+0x86c/0x1ed0 |
| [ 328.919601] schedule+0xfe/0x460 |
| [ 328.950461] schedule_timeout+0x140/0x260 |
| [ 328.969038] rcu_gp_kthread+0x9d9/0x2310 |
| [ 329.236894] kthread+0x35a/0x420 |
| [ 329.248156] ret_from_fork+0x3a/0x50 |
| [ 329.251894] NMI backtrace for cpu 1 |
| [ 329.255529] CPU: 1 PID: 8314 Comm: syz-executor2 Not tainted 4.19.0-rc2+ #6 |
| [ 329.262634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 329.271989] Call Trace: |
| [ 329.274578] <IRQ> |
| [ 329.276738] dump_stack+0x1c4/0x2b4 |
| [ 329.295554] nmi_cpu_backtrace.cold.3+0x63/0xa2 |
| [ 329.305441] nmi_trigger_cpumask_backtrace+0x1b3/0x1ed |
| [ 329.310726] arch_trigger_cpumask_backtrace+0x14/0x20 |
| [ 329.315961] rcu_dump_cpu_stacks+0x175/0x1c2 |
| [ 329.325408] print_cpu_stall.cold.78+0x2d3/0x524 |
| [ 329.374647] rcu_check_callbacks+0xfd9/0x1990 |
| [ 329.512616] update_process_times+0x2d/0x70 |
| [ 329.516985] tick_sched_handle+0x9f/0x180 |
| [ 329.521146] tick_sched_timer+0x45/0x130 |
| [ 329.525216] __hrtimer_run_queues+0x41c/0x10d0 |
| [ 329.584253] hrtimer_interrupt+0x313/0x780 |
| [ 329.588515] smp_apic_timer_interrupt+0x1a1/0x760 |
| [ 329.655276] apic_timer_interrupt+0xf/0x20 |
| [ 329.659508] </IRQ> |
| [ 329.661757] RIP: 0010:kvm_mmu_page_fault+0x2a3/0x1ad0 |
| [ 329.685879] RSP: 0018:ffff880191beeed0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 |
| [ 329.693625] RAX: 0000000000000000 RBX: ffff880191b70480 RCX: ffffc900022ce000 |
| [ 329.700898] RDX: 0000000000000007 RSI: ffffffff8112ec74 RDI: 0000000000000005 |
| [ 329.708171] RBP: ffff880191bef2b0 R08: ffff8801c44f83c0 R09: ffff880191beed98 |
| [ 329.715444] R10: ffff880191beeae8 R11: ffff88018d7cf38b R12: 0000000000000001 |
| [ 329.722721] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000f7e |
| [ 329.842590] handle_ept_violation+0x29e/0x6a0 |
| [ 329.859146] vmx_handle_exit+0x2f7/0x17f0 |
| [ 329.884567] vcpu_enter_guest+0x14a9/0x62e0 |
| [ 329.992063] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 |
| [ 330.001951] kvm_vcpu_ioctl+0x72b/0x1150 |
| [ 330.061445] do_vfs_ioctl+0x1de/0x1720 |
| [ 330.102388] ksys_ioctl+0xa9/0xd0 |
| [ 330.105859] __x64_sys_ioctl+0x73/0xb0 |
| [ 330.109814] do_syscall_64+0x1b9/0x820 |
| [ 330.148822] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 330.154015] RIP: 0033:0x457099 |
| [ 330.176154] RSP: 002b:00007f9e42b44c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 |
| [ 330.183875] RAX: ffffffffffffffda RBX: 00007f9e42b456d4 RCX: 0000000000457099 |
| [ 330.191150] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 |
| [ 330.198426] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 |
| [ 330.205697] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff |
| [ 330.212969] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000000 |
