| TITLE: INFO: rcu detected stall in kvm_vcpu_ioctl |
| TYPE: HANG |
| |
| [ 885.637820] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: |
| [ 885.644147] rcu: (detected by 1, t=10502 jiffies, g=132945, q=115) |
| [ 885.650574] rcu: All QSes seen, last rcu_preempt kthread activity 10498 (4295025713-4295015215), jiffies_till_next_fqs=1, root ->qsmask 0x0 |
| [ 885.663229] syz-executor7 R running task 21280 8024 5432 0x00000002 |
| [ 885.670447] Call Trace: |
| [ 885.673034] <IRQ> |
| [ 885.675201] sched_show_task.cold.83+0x2b6/0x30a |
| [ 885.711132] print_other_cpu_stall.cold.79+0xa83/0xba5 |
| [ 885.764802] rcu_check_callbacks+0xafc/0x1990 |
| [ 885.897413] update_process_times+0x2d/0x70 |
| [ 885.901759] tick_sched_handle+0x9f/0x180 |
| [ 885.905940] tick_sched_timer+0x45/0x130 |
| [ 885.910010] __hrtimer_run_queues+0x41c/0x10d0 |
| [ 885.966004] hrtimer_interrupt+0x313/0x780 |
| [ 885.970274] smp_apic_timer_interrupt+0x1a1/0x760 |
| [ 886.031595] apic_timer_interrupt+0xf/0x20 |
| [ 886.035836] </IRQ> |
| [ 886.038088] RIP: 0010:vmx_read_guest_seg_ar+0x127/0x270 |
| [ 886.062366] RSP: 0018:ffff8801a035ea40 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 |
| [ 886.070085] RAX: 0000000000000093 RBX: 0000000000000002 RCX: ffffc90004d15000 |
| [ 886.077363] RDX: 0000000000004818 RSI: ffffffff811c3301 RDI: ffffffff8803e9ac |
| [ 886.084637] RBP: ffff8801a035ea68 R08: ffff8801bfe0a140 R09: ffff8801c1f7c480 |
| [ 886.091910] R10: ffffed00383ef891 R11: ffff8801c1f7c48b R12: ffff8801c1f78a80 |
| [ 886.099184] R13: 0000000000004818 R14: 0000000000000000 R15: 0000000000100000 |
| [ 886.111255] vmx_get_cpl+0x5b/0x90 |
| [ 886.114813] kvm_fetch_guest_virt+0x65/0x1c0 |
| [ 886.123486] __do_insn_fetch_bytes+0x45b/0x950 |
| [ 886.136686] x86_decode_insn+0x1544/0x54c0 |
| [ 886.149892] x86_emulate_instruction+0x833/0x1fc0 |
| [ 886.171431] kvm_mmu_page_fault+0x396/0x1b30 |
| [ 886.299270] handle_ept_violation+0x29e/0x6a0 |
| [ 886.320472] vmx_handle_exit+0x2f7/0x17e0 |
| [ 886.345943] vcpu_enter_guest+0x14a9/0x62e0 |
| [ 886.447583] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 |
| [ 886.457476] kvm_vcpu_ioctl+0x72b/0x1150 |
| [ 886.510921] do_vfs_ioctl+0x1de/0x1720 |
| [ 886.567519] ksys_ioctl+0xa9/0xd0 |
| [ 886.570985] __x64_sys_ioctl+0x73/0xb0 |
| [ 886.574886] do_syscall_64+0x1b9/0x820 |
| [ 886.619519] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 886.624716] RIP: 0033:0x457099 |
| [ 886.646837] RSP: 002b:00007f84c55d1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 |
| [ 886.654558] RAX: ffffffffffffffda RBX: 00007f84c55d26d4 RCX: 0000000000457099 |
| [ 886.661834] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 |
| [ 886.669108] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 |
| [ 886.676383] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff |
| [ 886.683661] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000000 |
