Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts. 2019/10/22 10:37:54 fuzzer started 2019/10/22 10:37:55 dialing manager at 10.128.0.105:37053 2019/10/22 10:37:55 syscalls: 2524 2019/10/22 10:37:55 code coverage: enabled 2019/10/22 10:37:55 comparison tracing: enabled 2019/10/22 10:37:55 extra coverage: extra coverage is not supported by the kernel 2019/10/22 10:37:55 setuid sandbox: enabled 2019/10/22 10:37:55 namespace sandbox: enabled 2019/10/22 10:37:55 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 10:37:55 fault injection: enabled 2019/10/22 10:37:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 10:37:55 net packet injection: enabled 2019/10/22 10:37:55 net device setup: enabled 2019/10/22 10:37:55 concurrency sanitizer: enabled syzkaller login: [ 43.001571][ T7195] ================================================================== [ 43.009711][ T7195] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct [ 43.018191][ T7195] [ 43.020502][ T7195] read to 0xffff8881237c7808 of 4 bytes by interrupt on cpu 0: [ 43.028026][ T7195] __nf_conntrack_find_get+0x284/0x880 [ 43.033459][ T7195] nf_conntrack_in+0x2ef/0xa80 [ 43.038199][ T7195] ipv4_conntrack_in+0x27/0x40 [ 43.042941][ T7195] nf_hook_slow+0x83/0x160 [ 43.047329][ T7195] ip_rcv+0x12f/0x1a0 [ 43.051289][ T7195] __netif_receive_skb_one_core+0xa7/0xe0 [ 43.056985][ T7195] __netif_receive_skb+0x37/0xf0 [ 43.061913][ T7195] netif_receive_skb_internal+0x59/0x190 [ 43.067531][ T7195] napi_gro_receive+0x28f/0x330 [ 43.072373][ T7195] receive_buf+0x284/0x30b0 [ 43.077283][ T7195] virtnet_poll+0x436/0x7d0 [ 43.081775][ T7195] net_rx_action+0x3ae/0xa90 [ 43.086357][ T7195] __do_softirq+0x115/0x33f [ 43.090851][ T7195] run_ksoftirqd+0x46/0x60 [ 43.095236][ T7195] [ 43.097545][ T7195] write to 0xffff8881237c7808 of 4 bytes by task 7195 on cpu 1: [ 43.106103][ T7195] __nf_ct_refresh_acct+0xfb/0x1b0 [ 43.111187][ T7195] nf_conntrack_tcp_packet+0xd40/0x3390 [ 43.116708][ T7195] nf_conntrack_in+0x410/0xa80 [ 43.121445][ T7195] ipv4_conntrack_local+0xbe/0x130 [ 43.126594][ T7195] nf_hook_slow+0x83/0x160 [ 43.131003][ T7195] __ip_local_out+0x1f7/0x2b0 [ 43.135670][ T7195] ip_local_out+0x31/0x90 [ 43.140021][ T7195] __ip_queue_xmit+0x3a8/0xa40 [ 43.144774][ T7195] ip_queue_xmit+0x45/0x60 [ 43.149343][ T7195] __tcp_transmit_skb+0xe81/0x1d60 [ 43.154438][ T7195] __tcp_send_ack+0x246/0x300 [ 43.159094][ T7195] tcp_send_ack+0x34/0x40 [ 43.163408][ T7195] tcp_cleanup_rbuf+0x130/0x360 [ 43.168260][ T7195] [ 43.170575][ T7195] Reported by Kernel Concurrency Sanitizer on: [ 43.176707][ T7195] CPU: 1 PID: 7195 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 43.184134][ T7195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.194173][ T7195] ================================================================== [ 43.202228][ T7195] Kernel panic - not syncing: panic_on_warn set ... [ 43.208797][ T7195] CPU: 1 PID: 7195 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 43.216227][ T7195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.226273][ T7195] Call Trace: [ 43.229548][ T7195] dump_stack+0xf5/0x159 [ 43.233768][ T7195] panic+0x210/0x640 [ 43.237656][ T7195] ? ip_queue_xmit+0x45/0x60 [ 43.242238][ T7195] ? vprintk_func+0x8d/0x140 [ 43.246808][ T7195] kcsan_report.cold+0xc/0x10 [ 43.251468][ T7195] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 43.257005][ T7195] __tsan_write4+0x32/0x40 [ 43.261400][ T7195] __nf_ct_refresh_acct+0xfb/0x1b0 [ 43.266490][ T7195] nf_conntrack_tcp_packet+0xd40/0x3390 [ 43.272026][ T7195] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 43.277636][ T7195] nf_conntrack_in+0x410/0xa80 [ 43.282381][ T7195] ipv4_conntrack_local+0xbe/0x130 [ 43.287473][ T7195] nf_hook_slow+0x83/0x160 [ 43.291864][ T7195] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 43.296604][ T7195] __ip_local_out+0x1f7/0x2b0 [ 43.301262][ T7195] ? constant_test_bit+0x30/0x30 [ 43.306191][ T7195] ip_local_out+0x31/0x90 [ 43.310514][ T7195] __ip_queue_xmit+0x3a8/0xa40 [ 43.315259][ T7195] ip_queue_xmit+0x45/0x60 [ 43.319652][ T7195] __tcp_transmit_skb+0xe81/0x1d60 [ 43.324745][ T7195] __tcp_send_ack+0x246/0x300 [ 43.329400][ T7195] tcp_send_ack+0x34/0x40 [ 43.333707][ T7195] tcp_cleanup_rbuf+0x130/0x360 [ 43.338536][ T7195] tcp_recvmsg+0x633/0x1a30 [ 43.343025][ T7195] inet_recvmsg+0xbb/0x250 [ 43.347430][ T7195] ? __tsan_read8+0x2c/0x30 [ 43.351911][ T7195] ? inet_sendpage+0x100/0x100 [ 43.356656][ T7195] sock_recvmsg+0x92/0xb0 [ 43.360965][ T7195] sock_read_iter+0x15f/0x1e0 [ 43.365630][ T7195] new_sync_read+0x389/0x4f0 [ 43.370202][ T7195] __vfs_read+0xb1/0xc0 [ 43.374334][ T7195] vfs_read+0x143/0x2c0 [ 43.378483][ T7195] ksys_read+0xd5/0x1b0 [ 43.382622][ T7195] __x64_sys_read+0x4c/0x60 [ 43.387120][ T7195] do_syscall_64+0xcc/0x370 [ 43.391606][ T7195] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 43.397556][ T7195] RIP: 0033:0x47c530 [ 43.401438][ T7195] 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 [ 43.421022][ T7195] RSP: 002b:000000c4203cf7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 43.429411][ T7195] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 43.437359][ T7195] RDX: 0000000000001000 RSI: 000000c42024a000 RDI: 0000000000000003 [ 43.445305][ T7195] RBP: 000000c4203cf830 R08: 0000000000000000 R09: 0000000000000000 [ 43.453252][ T7195] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000007 [ 43.461211][ T7195] R13: 000000c420021010 R14: 0000000000000004 R15: ffffffffffffffff [ 43.470474][ T7195] Kernel Offset: disabled [ 43.475749][ T7195] Rebooting in 86400 seconds..