| TITLE: INFO: rcu detected stall in ipv6_rcv |
| TYPE: HANG |
| |
| [ 842.597024] INFO: rcu_sched self-detected stall on CPU |
| [ 842.602466] 0-....: (1 GPs behind) idle=222/1/4611686018427387906 softirq=196202/196203 fqs=31202 |
| [ 842.611869] (t=125000 jiffies g=95129 c=95128 q=2548) |
| [ 842.617218] NMI backtrace for cpu 0 |
| [ 842.620820] CPU: 0 PID: 6823 Comm: syz-executor6 Not tainted 4.16.0+ #288 |
| [ 842.627718] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 842.637043] Call Trace: |
| [ 842.639601] <IRQ> |
| [ 842.641730] dump_stack+0x1a7/0x27d |
| [ 842.662780] nmi_cpu_backtrace+0x1e0/0x220 |
| [ 842.671464] nmi_trigger_cpumask_backtrace+0x123/0x180 |
| [ 842.676716] arch_trigger_cpumask_backtrace+0x14/0x20 |
| [ 842.681881] rcu_dump_cpu_stacks+0x186/0x1d3 |
| [ 842.686271] check_cpu_stall.isra.63+0xbb8/0x15b0 |
| [ 842.762673] rcu_check_callbacks+0x21b/0xae0 |
| [ 842.815807] update_process_times+0x30/0x60 |
| [ 842.820105] tick_sched_handle+0x85/0x160 |
| [ 842.824229] tick_sched_timer+0x42/0x120 |
| [ 842.828264] __hrtimer_run_queues+0x39c/0xec0 |
| [ 842.874887] hrtimer_interrupt+0x2a5/0x6f0 |
| [ 842.879110] smp_apic_timer_interrupt+0x14a/0x700 |
| [ 842.914536] apic_timer_interrupt+0xf/0x20 |
| [ 842.918740] </IRQ> |
| [ 842.920956] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 |
| [ 842.926292] RSP: 0018:ffff8801aabde340 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff12 |
| [ 842.933978] RAX: 0000000000000007 RBX: ffff8801c81331c0 RCX: 000000000000fde1 |
| [ 842.941221] RDX: 0000000000000000 RSI: 0000000000004699 RDI: ffff8801c8133244 |
| [ 842.948465] RBP: ffff8801aabde3d0 R08: 0000000000000000 R09: ffff8801aabde6a8 |
| [ 842.955718] R10: 000000000000000b R11: ffffed003557bcdf R12: 000000000000fde1 |
| [ 842.962962] R13: ffff8801aabde6a8 R14: 00000000000046c8 R15: dffffc0000000000 |
| [ 842.979432] __xfrm_decode_session+0x68/0x110 |
| [ 842.983904] __xfrm_policy_check+0x19e/0x2300 |
| [ 843.040856] ip6_input_finish+0x1288/0x17b0 |
| [ 843.068947] ip6_input+0xdb/0x560 |
| [ 843.089410] ip6_mc_input+0x3a8/0xb10 |
| [ 843.096979] ip6_rcv_finish+0x297/0x8c0 |
| [ 843.121561] ipv6_rcv+0xf45/0x1fc0 |
| [ 843.145285] __netif_receive_skb_core+0x1a52/0x3480 |
| [ 843.236444] __netif_receive_skb+0x2c/0x1b0 |
| [ 843.245211] netif_receive_skb_internal+0x10b/0x670 |
| [ 843.266287] netif_receive_skb+0xae/0x390 |
| [ 843.288664] tun_rx_batched.isra.50+0x5ee/0x870 |
| [ 843.306989] tun_get_user+0x299b/0x3b50 |
| [ 843.363324] tun_chr_write_iter+0xb9/0x160 |
| [ 843.367536] do_iter_readv_writev+0x55c/0x830 |
| [ 843.380795] do_iter_write+0x154/0x540 |
| [ 843.392735] compat_writev+0x225/0x420 |
| [ 843.420428] do_compat_writev+0x115/0x220 |
| [ 843.440528] compat_SyS_writev+0x26/0x30 |
| [ 843.448867] do_fast_syscall_32+0x3ec/0xf9f |
| [ 843.486226] entry_SYSENTER_compat+0x70/0x7f |
| [ 843.490607] RIP: 0023:0xf7ff2c99 |
| [ 843.493944] RSP: 002b:00000000f5fee044 EFLAGS: 00000292 ORIG_RAX: 0000000000000092 |
| [ 843.501630] RAX: ffffffffffffffda RBX: 00000000000000fc RCX: 00000000f5fee094 |
| [ 843.508882] RDX: 0000000000000001 RSI: 000000000813af00 RDI: 00000000ffffffff |
| [ 843.516133] RBP: 00000000f5fee158 R08: 0000000000000000 R09: 0000000000000000 |
| [ 843.523377] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 |
| [ 843.530621] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 |
