Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. 2019/10/22 10:59:23 fuzzer started 2019/10/22 10:59:24 dialing manager at 10.128.0.105:37053 2019/10/22 10:59:24 syscalls: 2524 2019/10/22 10:59:24 code coverage: enabled 2019/10/22 10:59:24 comparison tracing: enabled 2019/10/22 10:59:24 extra coverage: extra coverage is not supported by the kernel 2019/10/22 10:59:24 setuid sandbox: enabled 2019/10/22 10:59:24 namespace sandbox: enabled 2019/10/22 10:59:24 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 10:59:24 fault injection: enabled 2019/10/22 10:59:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 10:59:24 net packet injection: enabled 2019/10/22 10:59:24 net device setup: enabled 2019/10/22 10:59:24 concurrency sanitizer: enabled syzkaller login: [ 45.386597][ T7207] ================================================================== [ 45.395471][ T7207] BUG: KCSAN: data-race in __nf_ct_refresh_acct / __nf_ct_refresh_acct [ 45.403679][ T7207] [ 45.405987][ T7207] read to 0xffff8881233c7508 of 4 bytes by interrupt on cpu 0: [ 45.413512][ T7207] __nf_ct_refresh_acct+0xd4/0x1b0 [ 45.418654][ T7207] nf_conntrack_tcp_packet+0xd40/0x3390 [ 45.424191][ T7207] nf_conntrack_in+0x410/0xa80 [ 45.428933][ T7207] ipv4_conntrack_in+0x27/0x40 [ 45.433674][ T7207] nf_hook_slow+0x83/0x160 [ 45.438063][ T7207] ip_rcv+0x12f/0x1a0 [ 45.442025][ T7207] __netif_receive_skb_one_core+0xa7/0xe0 [ 45.447732][ T7207] __netif_receive_skb+0x37/0xf0 [ 45.452647][ T7207] netif_receive_skb_internal+0x59/0x190 [ 45.458258][ T7207] napi_gro_receive+0x28f/0x330 [ 45.463084][ T7207] receive_buf+0x284/0x30b0 [ 45.467576][ T7207] virtnet_poll+0x436/0x7d0 [ 45.472073][ T7207] net_rx_action+0x3ae/0xa90 [ 45.476640][ T7207] __do_softirq+0x115/0x33f [ 45.481111][ T7207] [ 45.483418][ T7207] write to 0xffff8881233c7508 of 4 bytes by task 7207 on cpu 1: [ 45.491038][ T7207] __nf_ct_refresh_acct+0xfb/0x1b0 [ 45.496125][ T7207] nf_conntrack_tcp_packet+0xd40/0x3390 [ 45.501733][ T7207] nf_conntrack_in+0x410/0xa80 [ 45.506473][ T7207] ipv4_conntrack_local+0xbe/0x130 [ 45.511559][ T7207] nf_hook_slow+0x83/0x160 [ 45.515956][ T7207] __ip_local_out+0x1f7/0x2b0 [ 45.520628][ T7207] ip_local_out+0x31/0x90 [ 45.525024][ T7207] __ip_queue_xmit+0x3a8/0xa40 [ 45.529767][ T7207] ip_queue_xmit+0x45/0x60 [ 45.534158][ T7207] __tcp_transmit_skb+0xe81/0x1d60 [ 45.539243][ T7207] __tcp_send_ack+0x246/0x300 [ 45.543897][ T7207] tcp_send_ack+0x34/0x40 [ 45.548233][ T7207] tcp_cleanup_rbuf+0x130/0x360 [ 45.553054][ T7207] [ 45.555357][ T7207] Reported by Kernel Concurrency Sanitizer on: [ 45.561501][ T7207] CPU: 1 PID: 7207 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 45.568930][ T7207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.578975][ T7207] ================================================================== [ 45.587012][ T7207] Kernel panic - not syncing: panic_on_warn set ... [ 45.593580][ T7207] CPU: 1 PID: 7207 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 45.601019][ T7207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.611063][ T7207] Call Trace: [ 45.614334][ T7207] dump_stack+0xf5/0x159 [ 45.618566][ T7207] panic+0x210/0x640 [ 45.622461][ T7207] ? ip_queue_xmit+0x45/0x60 [ 45.627032][ T7207] ? vprintk_func+0x8d/0x140 [ 45.631879][ T7207] kcsan_report.cold+0xc/0x10 [ 45.636552][ T7207] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 45.642084][ T7207] __tsan_write4+0x32/0x40 [ 45.646481][ T7207] __nf_ct_refresh_acct+0xfb/0x1b0 [ 45.651570][ T7207] nf_conntrack_tcp_packet+0xd40/0x3390 [ 45.657117][ T7207] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 45.662728][ T7207] nf_conntrack_in+0x410/0xa80 [ 45.667474][ T7207] ipv4_conntrack_local+0xbe/0x130 [ 45.672589][ T7207] nf_hook_slow+0x83/0x160 [ 45.677075][ T7207] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 45.681831][ T7207] __ip_local_out+0x1f7/0x2b0 [ 45.686487][ T7207] ? constant_test_bit+0x30/0x30 [ 45.691403][ T7207] ip_local_out+0x31/0x90 [ 45.695725][ T7207] __ip_queue_xmit+0x3a8/0xa40 [ 45.700471][ T7207] ip_queue_xmit+0x45/0x60 [ 45.704868][ T7207] __tcp_transmit_skb+0xe81/0x1d60 [ 45.710066][ T7207] __tcp_send_ack+0x246/0x300 [ 45.723926][ T7207] tcp_send_ack+0x34/0x40 [ 45.728253][ T7207] tcp_cleanup_rbuf+0x130/0x360 [ 45.733153][ T7207] tcp_recvmsg+0x633/0x1a30 [ 45.737650][ T7207] inet_recvmsg+0xbb/0x250 [ 45.742050][ T7207] ? __tsan_read8+0x2c/0x30 [ 45.746533][ T7207] ? inet_sendpage+0x100/0x100 [ 45.751303][ T7207] sock_recvmsg+0x92/0xb0 [ 45.755620][ T7207] sock_read_iter+0x15f/0x1e0 [ 45.760305][ T7207] new_sync_read+0x389/0x4f0 [ 45.764986][ T7207] __vfs_read+0xb1/0xc0 [ 45.769121][ T7207] vfs_read+0x143/0x2c0 [ 45.773258][ T7207] ksys_read+0xd5/0x1b0 [ 45.777395][ T7207] __x64_sys_read+0x4c/0x60 [ 45.781895][ T7207] do_syscall_64+0xcc/0x370 [ 45.786401][ T7207] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.792291][ T7207] RIP: 0033:0x47c530 [ 45.796172][ T7207] 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 [ 45.815760][ T7207] RSP: 002b:000000c4203ad810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 45.824153][ T7207] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 45.832105][ T7207] RDX: 0000000000001000 RSI: 000000c420388000 RDI: 0000000000000003 [ 45.840056][ T7207] RBP: 000000c4203ad868 R08: 0000000000000000 R09: 0000000000000000 [ 45.848005][ T7207] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008 [ 45.855969][ T7207] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff [ 45.865270][ T7207] Kernel Offset: disabled [ 45.869596][ T7207] Rebooting in 86400 seconds..