Warning: Permanently added '10.128.0.209' (ECDSA) to the list of known hosts.
2019/10/04 12:25:49 fuzzer started
2019/10/04 12:25:50 dialing manager at 10.128.0.105:38119
2019/10/04 12:25:50 syscalls: 2523
2019/10/04 12:25:50 code coverage: enabled
2019/10/04 12:25:50 comparison tracing: enabled
2019/10/04 12:25:50 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:25:50 setuid sandbox: enabled
2019/10/04 12:25:50 namespace sandbox: enabled
2019/10/04 12:25:50 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:25:50 fault injection: enabled
2019/10/04 12:25:50 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:25:50 net packet injection: enabled
2019/10/04 12:25:50 net device setup: enabled
2019/10/04 12:25:50 concurrency sanitizer: enabled
syzkaller login: [   56.639050][ T7222] ==================================================================
[   56.647229][ T7222] BUG: KCSAN: data-race in __tcp_select_window+0x6b/0x4d0 and tcp_add_backlog+0x4a0/0xcc0
[   56.657086][ T7222] 
[   56.659397][ T7222] write to 0xffff888126b309ec of 4 bytes by interrupt on cpu 0:
[   56.667047][ T7222]  tcp_add_backlog+0x4a0/0xcc0
[   56.671784][ T7222]  tcp_v4_rcv+0x1aba/0x1bf0
[   56.676264][ T7222]  ip_protocol_deliver_rcu+0x51/0x470
[   56.681614][ T7222]  ip_local_deliver_finish+0x110/0x140
[   56.687045][ T7222]  ip_local_deliver+0x133/0x210
[   56.691881][ T7222]  ip_rcv_finish+0x121/0x160
[   56.696446][ T7222]  ip_rcv+0x18f/0x1a0
[   56.700415][ T7222]  __netif_receive_skb_one_core+0xa7/0xe0
[   56.706119][ T7222]  __netif_receive_skb+0x37/0xf0
[   56.711043][ T7222]  netif_receive_skb_internal+0x59/0x190
[   56.716658][ T7222]  napi_gro_complete+0x118/0x1e0
[   56.721579][ T7222]  dev_gro_receive+0xaf6/0x1190
[   56.726432][ T7222]  napi_gro_receive+0x7c/0x330
[   56.731181][ T7222]  receive_buf+0x284/0x30b0
[   56.735658][ T7222] 
[   56.737968][ T7222] read to 0xffff888126b309ec of 4 bytes by task 7222 on cpu 1:
[   56.745490][ T7222]  __tcp_select_window+0x6b/0x4d0
[   56.750491][ T7222]  __tcp_transmit_skb+0x679/0x1cd0
[   56.755582][ T7222]  __tcp_send_ack+0x246/0x300
[   56.760237][ T7222]  tcp_send_ack+0x34/0x40
[   56.764552][ T7222]  tcp_cleanup_rbuf+0x130/0x360
[   56.769377][ T7222]  tcp_recvmsg+0x633/0x1a30
[   56.773867][ T7222]  inet_recvmsg+0xbb/0x250
[   56.778259][ T7222]  sock_recvmsg+0x92/0xb0
[   56.783003][ T7222]  sock_read_iter+0x15f/0x1e0
[   56.787664][ T7222]  new_sync_read+0x389/0x4f0
[   56.792314][ T7222]  __vfs_read+0xb1/0xc0
[   56.796441][ T7222]  vfs_read+0x143/0x2c0
[   56.800580][ T7222]  ksys_read+0xd5/0x1b0
[   56.804704][ T7222] 
[   56.807007][ T7222] Reported by Kernel Concurrency Sanitizer on:
[   56.813134][ T7222] CPU: 1 PID: 7222 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   56.820219][ T7222] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.830249][ T7222] ==================================================================
[   56.838284][ T7222] Kernel panic - not syncing: panic_on_warn set ...
[   56.844859][ T7222] CPU: 1 PID: 7222 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   56.851948][ T7222] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.861985][ T7222] Call Trace:
[   56.865293][ T7222]  dump_stack+0xf5/0x159
[   56.869525][ T7222]  panic+0x209/0x639
[   56.873398][ T7222]  ? vprintk_func+0x8d/0x140
[   56.877964][ T7222]  kcsan_report.cold+0x57/0xeb
[   56.882720][ T7222]  __kcsan_setup_watchpoint+0x342/0x500
[   56.888242][ T7222]  __tsan_read4+0x2c/0x30
[   56.892552][ T7222]  __tcp_select_window+0x6b/0x4d0
[   56.897553][ T7222]  __tcp_transmit_skb+0x679/0x1cd0
[   56.902651][ T7222]  __tcp_send_ack+0x246/0x300
[   56.907304][ T7222]  tcp_send_ack+0x34/0x40
[   56.911609][ T7222]  tcp_cleanup_rbuf+0x130/0x360
[   56.916438][ T7222]  tcp_recvmsg+0x633/0x1a30
[   56.920950][ T7222]  inet_recvmsg+0xbb/0x250
[   56.925348][ T7222]  ? __tsan_read8+0x2c/0x30
[   56.929829][ T7222]  ? inet_sendpage+0x100/0x100
[   56.934570][ T7222]  sock_recvmsg+0x92/0xb0
[   56.938885][ T7222]  sock_read_iter+0x15f/0x1e0
[   56.943548][ T7222]  new_sync_read+0x389/0x4f0
[   56.948121][ T7222]  __vfs_read+0xb1/0xc0
[   56.952260][ T7222]  vfs_read+0x143/0x2c0
[   56.956398][ T7222]  ksys_read+0xd5/0x1b0
[   56.960563][ T7222]  __x64_sys_read+0x4c/0x60
[   56.965047][ T7222]  do_syscall_64+0xcf/0x2f0
[   56.969533][ T7222]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.975401][ T7222] RIP: 0033:0x47c530
[   56.979277][ T7222] 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
[   56.998866][ T7222] RSP: 002b:000000c42014d7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   57.007251][ T7222] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   57.015199][ T7222] RDX: 0000000000001000 RSI: 000000c4200aa000 RDI: 0000000000000003
[   57.023144][ T7222] RBP: 000000c42014d830 R08: 0000000000000000 R09: 0000000000000000
[   57.031092][ T7222] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000008
[   57.039039][ T7222] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   57.048182][ T7222] Kernel Offset: disabled
[   57.052518][ T7222] Rebooting in 86400 seconds..