Warning: Permanently added '10.128.0.222' (ECDSA) to the list of known hosts. 2019/11/03 09:29:55 fuzzer started 2019/11/03 09:29:57 dialing manager at 10.128.0.105:43165 2019/11/03 09:29:57 syscalls: 2554 2019/11/03 09:29:57 code coverage: enabled 2019/11/03 09:29:57 comparison tracing: enabled 2019/11/03 09:29:57 extra coverage: extra coverage is not supported by the kernel 2019/11/03 09:29:57 setuid sandbox: enabled 2019/11/03 09:29:57 namespace sandbox: enabled 2019/11/03 09:29:57 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/03 09:29:57 fault injection: enabled 2019/11/03 09:29:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/03 09:29:57 net packet injection: enabled 2019/11/03 09:29:57 net device setup: enabled 2019/11/03 09:29:57 concurrency sanitizer: enabled 2019/11/03 09:30:00 adding functions to KCSAN blacklist: 'tcp_add_backlog' 'tomoyo_supervisor' 'rcu_gp_fqs_loop' 'tick_sched_do_timer' 'task_dump_owner' 'run_timer_softirq' 'tcp_poll' 'generic_permission' 'do_nanosleep' '__hrtimer_run_queues' '__tcp_select_window' syzkaller login: [ 51.925334][ T7151] ================================================================== [ 51.933565][ T7151] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct [ 51.942043][ T7151] [ 51.944373][ T7151] read to 0xffff8881211b1608 of 4 bytes by interrupt on cpu 1: [ 51.951916][ T7151] __nf_conntrack_find_get+0x284/0x880 [ 51.957386][ T7151] nf_conntrack_in+0x2ef/0xa80 [ 51.962167][ T7151] ipv4_conntrack_in+0x27/0x40 [ 51.966909][ T7151] nf_hook_slow+0x83/0x160 [ 51.971334][ T7151] ip_rcv+0x12f/0x1a0 [ 51.975290][ T7151] __netif_receive_skb_one_core+0xa7/0xe0 [ 51.980986][ T7151] __netif_receive_skb+0x37/0xf0 [ 51.985922][ T7151] netif_receive_skb_internal+0x59/0x190 [ 51.991531][ T7151] napi_gro_receive+0x28f/0x330 [ 51.996369][ T7151] receive_buf+0x284/0x30b0 [ 52.000857][ T7151] virtnet_poll+0x436/0x7d0 [ 52.006378][ T7151] net_rx_action+0x3ae/0xa90 [ 52.010941][ T7151] __do_softirq+0x115/0x33f [ 52.015416][ T7151] irq_exit+0xbb/0xe0 [ 52.019386][ T7151] [ 52.021706][ T7151] write to 0xffff8881211b1608 of 4 bytes by task 7151 on cpu 0: [ 52.029320][ T7151] __nf_ct_refresh_acct+0xfb/0x1b0 [ 52.034451][ T7151] nf_conntrack_tcp_packet+0xd40/0x3390 [ 52.039981][ T7151] nf_conntrack_in+0x410/0xa80 [ 52.044744][ T7151] ipv4_conntrack_local+0xbe/0x130 [ 52.049830][ T7151] nf_hook_slow+0x83/0x160 [ 52.054218][ T7151] __ip_local_out+0x1f7/0x2b0 [ 52.058867][ T7151] ip_local_out+0x31/0x90 [ 52.063174][ T7151] __ip_queue_xmit+0x3a8/0xa40 [ 52.067937][ T7151] ip_queue_xmit+0x45/0x60 [ 52.072329][ T7151] __tcp_transmit_skb+0xe81/0x1d60 [ 52.077413][ T7151] __tcp_send_ack+0x246/0x300 [ 52.082066][ T7151] tcp_send_ack+0x34/0x40 [ 52.086370][ T7151] tcp_cleanup_rbuf+0x130/0x360 [ 52.091197][ T7151] [ 52.093497][ T7151] Reported by Kernel Concurrency Sanitizer on: [ 52.099626][ T7151] CPU: 0 PID: 7151 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 52.107061][ T7151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.117100][ T7151] ================================================================== [ 52.125144][ T7151] Kernel panic - not syncing: panic_on_warn set ... [ 52.131707][ T7151] CPU: 0 PID: 7151 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 52.139145][ T7151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.149170][ T7151] Call Trace: [ 52.152438][ T7151] dump_stack+0xf5/0x159 [ 52.156672][ T7151] panic+0x210/0x640 [ 52.160546][ T7151] ? ip_queue_xmit+0x45/0x60 [ 52.165116][ T7151] ? vprintk_func+0x8d/0x140 [ 52.169688][ T7151] kcsan_report.cold+0xc/0x10 [ 52.174341][ T7151] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 52.179861][ T7151] __tsan_write4+0x32/0x40 [ 52.184253][ T7151] __nf_ct_refresh_acct+0xfb/0x1b0 [ 52.189353][ T7151] nf_conntrack_tcp_packet+0xd40/0x3390 [ 52.194880][ T7151] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.200489][ T7151] nf_conntrack_in+0x410/0xa80 [ 52.205233][ T7151] ipv4_conntrack_local+0xbe/0x130 [ 52.210428][ T7151] nf_hook_slow+0x83/0x160 [ 52.214831][ T7151] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 52.219568][ T7151] __ip_local_out+0x1f7/0x2b0 [ 52.224221][ T7151] ? constant_test_bit+0x30/0x30 [ 52.229144][ T7151] ip_local_out+0x31/0x90 [ 52.233452][ T7151] __ip_queue_xmit+0x3a8/0xa40 [ 52.238195][ T7151] ip_queue_xmit+0x45/0x60 [ 52.242587][ T7151] __tcp_transmit_skb+0xe81/0x1d60 [ 52.247683][ T7151] __tcp_send_ack+0x246/0x300 [ 52.252333][ T7151] tcp_send_ack+0x34/0x40 [ 52.256645][ T7151] tcp_cleanup_rbuf+0x130/0x360 [ 52.261472][ T7151] tcp_recvmsg+0x633/0x1a30 [ 52.265968][ T7151] inet_recvmsg+0xbb/0x250 [ 52.270360][ T7151] ? __tsan_read8+0x2c/0x30 [ 52.274837][ T7151] ? inet_sendpage+0x100/0x100 [ 52.279578][ T7151] sock_recvmsg+0x92/0xb0 [ 52.283895][ T7151] sock_read_iter+0x15f/0x1e0 [ 52.288553][ T7151] new_sync_read+0x389/0x4f0 [ 52.293125][ T7151] __vfs_read+0xb1/0xc0 [ 52.297253][ T7151] vfs_read+0x143/0x2c0 [ 52.301384][ T7151] ksys_read+0xd5/0x1b0 [ 52.305516][ T7151] __x64_sys_read+0x4c/0x60 [ 52.309999][ T7151] do_syscall_64+0xcc/0x370 [ 52.314490][ T7151] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.320356][ T7151] RIP: 0033:0x47c530 [ 52.324242][ T7151] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 52.343832][ T7151] RSP: 002b:000000c420149810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 52.352217][ T7151] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 52.360163][ T7151] RDX: 0000000000001000 RSI: 000000c4200a8000 RDI: 0000000000000003 [ 52.368120][ T7151] RBP: 000000c420149868 R08: 0000000000000000 R09: 0000000000000000 [ 52.376080][ T7151] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008 [ 52.384036][ T7151] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff [ 52.393410][ T7151] Kernel Offset: disabled [ 52.397758][ T7151] Rebooting in 86400 seconds..