Warning: Permanently added '10.128.0.188' (ECDSA) to the list of known hosts. 2019/10/22 09:00:16 fuzzer started 2019/10/22 09:00:18 dialing manager at 10.128.0.105:37053 2019/10/22 09:00:18 syscalls: 2524 2019/10/22 09:00:18 code coverage: enabled 2019/10/22 09:00:18 comparison tracing: enabled 2019/10/22 09:00:18 extra coverage: extra coverage is not supported by the kernel 2019/10/22 09:00:18 setuid sandbox: enabled 2019/10/22 09:00:18 namespace sandbox: enabled 2019/10/22 09:00:18 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 09:00:18 fault injection: enabled 2019/10/22 09:00:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 09:00:18 net packet injection: enabled 2019/10/22 09:00:18 net device setup: enabled 2019/10/22 09:00:18 concurrency sanitizer: enabled syzkaller login: [ 49.567269][ T7236] ================================================================== [ 49.575415][ T7236] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct [ 49.583941][ T7236] [ 49.586647][ T7236] read to 0xffff88811f440b08 of 4 bytes by interrupt on cpu 0: [ 49.594193][ T7236] __nf_conntrack_find_get+0x284/0x880 [ 49.599645][ T7236] nf_conntrack_in+0x2ef/0xa80 [ 49.604405][ T7236] ipv4_conntrack_in+0x27/0x40 [ 49.609151][ T7236] nf_hook_slow+0x83/0x160 [ 49.613554][ T7236] ip_rcv+0x12f/0x1a0 [ 49.617514][ T7236] __netif_receive_skb_one_core+0xa7/0xe0 [ 49.623225][ T7236] __netif_receive_skb+0x37/0xf0 [ 49.628154][ T7236] netif_receive_skb_internal+0x59/0x190 [ 49.633765][ T7236] napi_gro_receive+0x28f/0x330 [ 49.638590][ T7236] receive_buf+0x284/0x30b0 [ 49.643082][ T7236] virtnet_poll+0x436/0x7d0 [ 49.647564][ T7236] net_rx_action+0x3ae/0xa90 [ 49.652146][ T7236] __do_softirq+0x115/0x33f [ 49.656638][ T7236] run_ksoftirqd+0x46/0x60 [ 49.661043][ T7236] [ 49.663351][ T7236] write to 0xffff88811f440b08 of 4 bytes by task 7236 on cpu 1: [ 49.670960][ T7236] __nf_ct_refresh_acct+0xfb/0x1b0 [ 49.676045][ T7236] nf_conntrack_tcp_packet+0xd40/0x3390 [ 49.681579][ T7236] nf_conntrack_in+0x410/0xa80 [ 49.686332][ T7236] ipv4_conntrack_local+0xbe/0x130 [ 49.691425][ T7236] nf_hook_slow+0x83/0x160 [ 49.695828][ T7236] __ip_local_out+0x1f7/0x2b0 [ 49.700480][ T7236] ip_local_out+0x31/0x90 [ 49.704784][ T7236] __ip_queue_xmit+0x3a8/0xa40 [ 49.709542][ T7236] ip_queue_xmit+0x45/0x60 [ 49.713954][ T7236] __tcp_transmit_skb+0xe81/0x1d60 [ 49.719043][ T7236] __tcp_send_ack+0x246/0x300 [ 49.723696][ T7236] tcp_send_ack+0x34/0x40 [ 49.728103][ T7236] tcp_cleanup_rbuf+0x130/0x360 [ 49.733455][ T7236] [ 49.735756][ T7236] Reported by Kernel Concurrency Sanitizer on: [ 49.741886][ T7236] CPU: 1 PID: 7236 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 49.749315][ T7236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.759518][ T7236] ================================================================== [ 49.767552][ T7236] Kernel panic - not syncing: panic_on_warn set ... [ 49.774117][ T7236] CPU: 1 PID: 7236 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 49.781545][ T7236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.791597][ T7236] Call Trace: [ 49.794868][ T7236] dump_stack+0xf5/0x159 [ 49.799090][ T7236] panic+0x210/0x640 [ 49.802978][ T7236] ? ip_queue_xmit+0x45/0x60 [ 49.807555][ T7236] ? vprintk_func+0x8d/0x140 [ 49.812136][ T7236] kcsan_report.cold+0xc/0x10 [ 49.816793][ T7236] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 49.822328][ T7236] __tsan_write4+0x32/0x40 [ 49.826810][ T7236] __nf_ct_refresh_acct+0xfb/0x1b0 [ 49.832266][ T7236] nf_conntrack_tcp_packet+0xd40/0x3390 [ 49.838260][ T7236] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 49.844486][ T7236] nf_conntrack_in+0x410/0xa80 [ 49.849571][ T7236] ipv4_conntrack_local+0xbe/0x130 [ 49.854902][ T7236] nf_hook_slow+0x83/0x160 [ 49.860205][ T7236] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 49.865495][ T7236] __ip_local_out+0x1f7/0x2b0 [ 49.870252][ T7236] ? constant_test_bit+0x30/0x30 [ 49.875188][ T7236] ip_local_out+0x31/0x90 [ 49.879621][ T7236] __ip_queue_xmit+0x3a8/0xa40 [ 49.884385][ T7236] ip_queue_xmit+0x45/0x60 [ 49.888784][ T7236] __tcp_transmit_skb+0xe81/0x1d60 [ 49.893892][ T7236] __tcp_send_ack+0x246/0x300 [ 49.898548][ T7236] tcp_send_ack+0x34/0x40 [ 49.902859][ T7236] tcp_cleanup_rbuf+0x130/0x360 [ 49.907704][ T7236] tcp_recvmsg+0x633/0x1a30 [ 49.912192][ T7236] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 49.917817][ T7236] inet_recvmsg+0xbb/0x250 [ 49.922209][ T7236] ? __tsan_read8+0x2c/0x30 [ 49.926703][ T7236] ? inet_sendpage+0x100/0x100 [ 49.931462][ T7236] sock_recvmsg+0x92/0xb0 [ 49.935786][ T7236] sock_read_iter+0x15f/0x1e0 [ 49.940445][ T7236] new_sync_read+0x389/0x4f0 [ 49.945018][ T7236] __vfs_read+0xb1/0xc0 [ 49.949170][ T7236] vfs_read+0x143/0x2c0 [ 49.953318][ T7236] ksys_read+0xd5/0x1b0 [ 49.957573][ T7236] __x64_sys_read+0x4c/0x60 [ 49.962070][ T7236] do_syscall_64+0xcc/0x370 [ 49.966556][ T7236] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 49.972424][ T7236] RIP: 0033:0x47c530 [ 49.976313][ T7236] 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 [ 49.995893][ T7236] RSP: 002b:000000c4203bd7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 50.004368][ T7236] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 50.012951][ T7236] RDX: 0000000000001000 RSI: 000000c42037a000 RDI: 0000000000000003 [ 50.022721][ T7236] RBP: 000000c4203bd830 R08: 0000000000000000 R09: 0000000000000000 [ 50.030691][ T7236] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004 [ 50.039906][ T7236] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff [ 50.049531][ T7236] Kernel Offset: disabled [ 50.053856][ T7236] Rebooting in 86400 seconds..