Warning: Permanently added '10.128.0.179' (ECDSA) to the list of known hosts. 2019/10/22 04:27:34 fuzzer started 2019/10/22 04:27:36 dialing manager at 10.128.0.105:37053 2019/10/22 04:27:36 syscalls: 2524 2019/10/22 04:27:36 code coverage: enabled 2019/10/22 04:27:36 comparison tracing: enabled 2019/10/22 04:27:36 extra coverage: extra coverage is not supported by the kernel 2019/10/22 04:27:36 setuid sandbox: enabled 2019/10/22 04:27:36 namespace sandbox: enabled 2019/10/22 04:27:36 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 04:27:36 fault injection: enabled 2019/10/22 04:27:36 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 04:27:36 net packet injection: enabled 2019/10/22 04:27:36 net device setup: enabled 2019/10/22 04:27:36 concurrency sanitizer: enabled syzkaller login: [ 50.598615][ T7271] ================================================================== [ 50.609116][ T7271] BUG: KCSAN: data-race in __nf_ct_refresh_acct / __nf_ct_refresh_acct [ 50.617616][ T7271] [ 50.619939][ T7271] read to 0xffff888124a06308 of 4 bytes by interrupt on cpu 0: [ 50.627473][ T7271] __nf_ct_refresh_acct+0xd4/0x1b0 [ 50.632593][ T7271] nf_conntrack_tcp_packet+0xd40/0x3390 [ 50.638162][ T7271] nf_conntrack_in+0x410/0xa80 [ 50.643021][ T7271] ipv4_conntrack_in+0x27/0x40 [ 50.647767][ T7271] nf_hook_slow+0x83/0x160 [ 50.652177][ T7271] ip_rcv+0x12f/0x1a0 [ 50.656244][ T7271] __netif_receive_skb_one_core+0xa7/0xe0 [ 50.661949][ T7271] __netif_receive_skb+0x37/0xf0 [ 50.666865][ T7271] netif_receive_skb_internal+0x59/0x190 [ 50.672483][ T7271] napi_gro_receive+0x28f/0x330 [ 50.678268][ T7271] receive_buf+0x284/0x30b0 [ 50.682749][ T7271] virtnet_poll+0x436/0x7d0 [ 50.687248][ T7271] net_rx_action+0x3ae/0xa90 [ 50.691827][ T7271] __do_softirq+0x115/0x33f [ 50.696317][ T7271] [ 50.698629][ T7271] write to 0xffff888124a06308 of 4 bytes by task 7271 on cpu 1: [ 50.706321][ T7271] __nf_ct_refresh_acct+0xfb/0x1b0 [ 50.711581][ T7271] nf_conntrack_tcp_packet+0xd40/0x3390 [ 50.717116][ T7271] nf_conntrack_in+0x410/0xa80 [ 50.721867][ T7271] ipv4_conntrack_local+0xbe/0x130 [ 50.727152][ T7271] nf_hook_slow+0x83/0x160 [ 50.731582][ T7271] __ip_local_out+0x1f7/0x2b0 [ 50.736462][ T7271] ip_local_out+0x31/0x90 [ 50.740870][ T7271] __ip_queue_xmit+0x3a8/0xa40 [ 50.746700][ T7271] ip_queue_xmit+0x45/0x60 [ 50.751148][ T7271] __tcp_transmit_skb+0xe81/0x1d60 [ 50.756900][ T7271] __tcp_send_ack+0x246/0x300 [ 50.761671][ T7271] tcp_send_ack+0x34/0x40 [ 50.765991][ T7271] tcp_cleanup_rbuf+0x130/0x360 [ 50.771008][ T7271] [ 50.773326][ T7271] Reported by Kernel Concurrency Sanitizer on: [ 50.779473][ T7271] CPU: 1 PID: 7271 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 50.787165][ T7271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.797228][ T7271] ================================================================== [ 50.805274][ T7271] Kernel panic - not syncing: panic_on_warn set ... [ 50.811858][ T7271] CPU: 1 PID: 7271 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 50.819386][ T7271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.829984][ T7271] Call Trace: [ 50.833361][ T7271] dump_stack+0xf5/0x159 [ 50.838036][ T7271] panic+0x210/0x640 [ 50.842014][ T7271] ? ip_queue_xmit+0x45/0x60 [ 50.846602][ T7271] ? vprintk_func+0x8d/0x140 [ 50.851172][ T7271] kcsan_report.cold+0xc/0x10 [ 50.855860][ T7271] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 50.861408][ T7271] __tsan_write4+0x32/0x40 [ 50.865994][ T7271] __nf_ct_refresh_acct+0xfb/0x1b0 [ 50.871110][ T7271] nf_conntrack_tcp_packet+0xd40/0x3390 [ 50.876832][ T7271] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 50.882563][ T7271] nf_conntrack_in+0x410/0xa80 [ 50.887854][ T7271] ipv4_conntrack_local+0xbe/0x130 [ 50.893153][ T7271] nf_hook_slow+0x83/0x160 [ 50.897662][ T7271] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 50.902467][ T7271] __ip_local_out+0x1f7/0x2b0 [ 50.907140][ T7271] ? constant_test_bit+0x30/0x30 [ 50.912064][ T7271] ip_local_out+0x31/0x90 [ 50.916432][ T7271] __ip_queue_xmit+0x3a8/0xa40 [ 50.921230][ T7271] ip_queue_xmit+0x45/0x60 [ 50.925870][ T7271] __tcp_transmit_skb+0xe81/0x1d60 [ 50.931076][ T7271] __tcp_send_ack+0x246/0x300 [ 50.937023][ T7271] tcp_send_ack+0x34/0x40 [ 50.941350][ T7271] tcp_cleanup_rbuf+0x130/0x360 [ 50.946246][ T7271] tcp_recvmsg+0x633/0x1a30 [ 50.950759][ T7271] inet_recvmsg+0xbb/0x250 [ 50.955171][ T7271] ? __tsan_read8+0x2c/0x30 [ 50.959672][ T7271] ? inet_sendpage+0x100/0x100 [ 50.964444][ T7271] sock_recvmsg+0x92/0xb0 [ 50.968855][ T7271] sock_read_iter+0x15f/0x1e0 [ 50.973526][ T7271] new_sync_read+0x389/0x4f0 [ 50.978982][ T7271] __vfs_read+0xb1/0xc0 [ 50.983123][ T7271] vfs_read+0x143/0x2c0 [ 50.987278][ T7271] ksys_read+0xd5/0x1b0 [ 50.991439][ T7271] __x64_sys_read+0x4c/0x60 [ 50.996201][ T7271] do_syscall_64+0xcc/0x370 [ 51.000804][ T7271] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 51.006684][ T7271] RIP: 0033:0x47c530 [ 51.010580][ T7271] 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 [ 51.030359][ T7271] RSP: 002b:000000c4204fb7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 51.038756][ T7271] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 51.047408][ T7271] RDX: 0000000000001000 RSI: 000000c420162000 RDI: 0000000000000003 [ 51.055701][ T7271] RBP: 000000c4204fb830 R08: 0000000000000000 R09: 0000000000000000 [ 51.063766][ T7271] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004 [ 51.071749][ T7271] R13: ffffffffffffffff R14: 0000000000000008 R15: ffffffffffffffff [ 51.081492][ T7271] Kernel Offset: disabled [ 51.087336][ T7271] Rebooting in 86400 seconds..