| TITLE: INFO: rcu detected stall in ipv6_rcv |
| |
| [ 757.882665] INFO: rcu_preempt self-detected stall on CPU |
| [ 757.888422] 0-...: (1 GPs behind) idle=c37/140000000000001/0 softirq=7357/7358 fqs=12499 |
| [ 757.896793] (t=12500 jiffies g=1208 c=1207 q=83) |
| [ 757.901825] Task dump for CPU 0: |
| [ 757.905161] syz-executor0 R running task 28096 4312 3955 0x2002000c |
| [ 757.912583] 0000000000000f73 f9a9a8cb61184120 ffff8801db206ff0 ffffffff8140c8fc |
| [ 757.920592] ffff8801db21f4c0 0000000000000000 dffffc0000000000 ffffffff844bef00 |
| [ 757.928622] ffffffff844bef84 ffff8801db207010 ffffffff8140cb87 ffffffff844bef48 |
| [ 757.936617] Call Trace: |
| [ 757.939184] <IRQ> [<ffffffff8140c8fc>] sched_show_task+0x2cb/0x2d6 |
| [ 757.945782] [<ffffffff8140cb87>] dump_cpu_task+0x79/0x7e |
| [ 757.951308] [<ffffffff8141704d>] rcu_dump_cpu_stacks+0x150/0x164 |
| [ 757.957513] [<ffffffff81417c4a>] rcu_check_callbacks.cold.75+0x5c3/0xd20 |
| [ 757.970200] [<ffffffff8129a7da>] update_process_times+0x3a/0x70 |
| [ 757.976320] [<ffffffff812c5195>] tick_sched_handle.isra.15+0x55/0xf0 |
| [ 757.982881] [<ffffffff812c5822>] tick_sched_timer+0x72/0x120 |
| [ 757.994948] [<ffffffff8129dd4d>] __hrtimer_run_queues+0x3ad/0x1000 |
| [ 758.025989] [<ffffffff8129f4c1>] hrtimer_interrupt+0x1b1/0x430 |
| [ 758.032028] [<ffffffff810ad284>] local_apic_timer_interrupt+0x74/0xa0 |
| [ 758.038752] [<ffffffff838c534c>] smp_apic_timer_interrupt+0x7c/0xa0 |
| [ 758.045218] [<ffffffff838c4290>] apic_timer_interrupt+0xa0/0xb0 |
| [ 758.063861] [<ffffffff833c9b39>] __xfrm_decode_session+0x69/0x100 |
| [ 758.070171] [<ffffffff834a3d9e>] icmpv6_route_lookup+0x2ce/0x440 |
| [ 758.088109] [<ffffffff834a5b99>] icmp6_send+0xee9/0x1b80 |
| [ 758.152555] [<ffffffff8355b491>] icmpv6_send+0xb1/0x1b0 |
| [ 758.164964] [<ffffffff8346309d>] ip6_pkt_drop+0x16d/0x430 |
| [ 758.170569] [<ffffffff8346337c>] ip6_pkt_discard+0x1c/0x20 |
| [ 758.176265] [<ffffffff834360bd>] ip6_rcv_finish+0x13d/0x640 |
| [ 758.187979] [<ffffffff83438bdb>] ipv6_rcv+0x10cb/0x1cd0 |
| [ 758.217187] [<ffffffff82f7eb06>] __netif_receive_skb_core+0x12d6/0x2940 |
| [ 758.237196] [<ffffffff82f801cb>] __netif_receive_skb+0x5b/0x1b0 |
| [ 758.243331] [<ffffffff82f84756>] process_backlog+0x216/0x6a0 |
| [ 758.255225] [<ffffffff82f81592>] net_rx_action+0x3a2/0xdb0 |
| [ 758.274043] [<ffffffff838c5bec>] __do_softirq+0x22c/0xa1a |
| [ 758.286381] [<ffffffff838c399c>] do_softirq_own_stack+0x1c/0x30 |
| [ 758.292494] <EOI> [<ffffffff8113d9d4>] do_softirq.part.16+0x54/0x60 |
| [ 758.299190] [<ffffffff8113f6c9>] do_softirq+0x19/0x20 |
| [ 758.304442] [<ffffffff82f7caac>] netif_rx_ni+0xec/0x3a0 |
| [ 758.309892] [<ffffffff82753187>] tun_get_user+0xbe7/0x2410 |
| [ 758.326886] [<ffffffff82754bc5>] tun_chr_write_iter+0xd5/0x190 |
| [ 758.332918] [<ffffffff8151ce0d>] __vfs_write+0x30d/0x3f0 |
| [ 758.380578] [<ffffffff8151e9f1>] vfs_write+0x191/0x4e0 |
| [ 758.385913] [<ffffffff81520ff9>] SyS_write+0xd9/0x1c0 |
| [ 758.414182] [<ffffffff81006d96>] do_fast_syscall_32+0x326/0x8b0 |
| [ 758.420301] [<ffffffff838c406a>] sysenter_flags_fixed+0xd/0x17 |
