Warning: Permanently added '10.128.0.142' (ECDSA) to the list of known hosts.
2019/10/14 10:45:15 fuzzer started
2019/10/14 10:45:16 dialing manager at 10.128.0.105:43961
2019/10/14 10:45:16 syscalls: 2523
2019/10/14 10:45:16 code coverage: enabled
2019/10/14 10:45:16 comparison tracing: enabled
2019/10/14 10:45:16 extra coverage: extra coverage is not supported by the kernel
2019/10/14 10:45:16 setuid sandbox: enabled
2019/10/14 10:45:16 namespace sandbox: enabled
2019/10/14 10:45:16 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/14 10:45:16 fault injection: enabled
2019/10/14 10:45:16 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/14 10:45:16 net packet injection: enabled
2019/10/14 10:45:16 net device setup: enabled
2019/10/14 10:45:16 concurrency sanitizer: enabled
syzkaller login: [   51.788430][ T7323] ==================================================================
[   51.796938][ T7323] BUG: KCSAN: data-race in rcu_gp_fqs_check_wake / rcu_preempt_deferred_qs_irqrestore
[   51.806459][ T7323] 
[   51.808796][ T7323] read to 0xffffffff85a7f190 of 8 bytes by task 10 on cpu 0:
[   51.816165][ T7323]  rcu_gp_fqs_check_wake+0x93/0xd0
[   51.821262][ T7323]  rcu_gp_fqs_loop+0x36c/0x580
[   51.826015][ T7323]  rcu_gp_kthread+0x143/0x220
[   51.830688][ T7323]  kthread+0x1d4/0x200
[   51.834745][ T7323]  ret_from_fork+0x1f/0x30
[   51.839173][ T7323] 
[   51.841493][ T7323] write to 0xffffffff85a7f190 of 8 bytes by task 7323 on cpu 1:
[   51.849129][ T7323]  rcu_preempt_deferred_qs_irqrestore+0x43d/0x580
[   51.855529][ T7323]  rcu_read_unlock_special+0xec/0x370
[   51.860886][ T7323]  __rcu_read_unlock+0xcf/0xe0
[   51.865659][ T7323]  __ip_queue_xmit+0x3b0/0xa40
[   51.870432][ T7323]  ip_queue_xmit+0x45/0x60
[   51.874865][ T7323]  __tcp_transmit_skb+0xdeb/0x1cd0
[   51.879978][ T7323]  __tcp_send_ack+0x246/0x300
[   51.884646][ T7323]  tcp_send_ack+0x34/0x40
[   51.888991][ T7323]  tcp_cleanup_rbuf+0x130/0x360
[   51.893826][ T7323]  tcp_recvmsg+0x633/0x1a30
[   51.898316][ T7323]  inet_recvmsg+0xbb/0x250
[   51.902721][ T7323]  sock_recvmsg+0x92/0xb0
[   51.907035][ T7323]  sock_read_iter+0x15f/0x1e0
[   51.912037][ T7323] 
[   51.914346][ T7323] Reported by Kernel Concurrency Sanitizer on:
[   51.920484][ T7323] CPU: 1 PID: 7323 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   51.927757][ T7323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.937823][ T7323] ==================================================================
[   51.946081][ T7323] Kernel panic - not syncing: panic_on_warn set ...
[   51.952664][ T7323] CPU: 1 PID: 7323 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   51.959775][ T7323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.969928][ T7323] Call Trace:
[   51.973219][ T7323]  dump_stack+0xf5/0x159
[   51.977482][ T7323]  panic+0x209/0x639
[   51.981395][ T7323]  ? tcp_cleanup_rbuf+0x130/0x360
[   51.986418][ T7323]  ? vprintk_func+0x8d/0x140
[   51.991003][ T7323]  kcsan_report.cold+0xc/0x1b
[   51.995670][ T7323]  __kcsan_setup_watchpoint+0x3ee/0x510
[   52.001204][ T7323]  __tsan_write8+0x32/0x40
[   52.005614][ T7323]  rcu_preempt_deferred_qs_irqrestore+0x43d/0x580
[   52.012022][ T7323]  rcu_read_unlock_special+0xec/0x370
[   52.017387][ T7323]  __rcu_read_unlock+0xcf/0xe0
[   52.022142][ T7323]  __ip_queue_xmit+0x3b0/0xa40
[   52.026895][ T7323]  ip_queue_xmit+0x45/0x60
[   52.031317][ T7323]  __tcp_transmit_skb+0xdeb/0x1cd0
[   52.036428][ T7323]  __tcp_send_ack+0x246/0x300
[   52.041096][ T7323]  tcp_send_ack+0x34/0x40
[   52.045409][ T7323]  tcp_cleanup_rbuf+0x130/0x360
[   52.050248][ T7323]  tcp_recvmsg+0x633/0x1a30
[   52.054750][ T7323]  inet_recvmsg+0xbb/0x250
[   52.059150][ T7323]  ? __tsan_read8+0x2c/0x30
[   52.063641][ T7323]  ? inet_sendpage+0x100/0x100
[   52.068391][ T7323]  sock_recvmsg+0x92/0xb0
[   52.072712][ T7323]  sock_read_iter+0x15f/0x1e0
[   52.077385][ T7323]  new_sync_read+0x389/0x4f0
[   52.081972][ T7323]  __vfs_read+0xb1/0xc0
[   52.086117][ T7323]  vfs_read+0x143/0x2c0
[   52.090261][ T7323]  ksys_read+0xd5/0x1b0
[   52.094413][ T7323]  __x64_sys_read+0x4c/0x60
[   52.098907][ T7323]  do_syscall_64+0xcf/0x2f0
[   52.103404][ T7323]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   52.109280][ T7323] RIP: 0033:0x47c530
[   52.113167][ T7323] 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
[   52.132794][ T7323] RSP: 002b:000000c4203b77d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   52.141198][ T7323] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   52.149193][ T7323] RDX: 0000000000001000 RSI: 000000c420148000 RDI: 0000000000000003
[   52.157249][ T7323] RBP: 000000c4203b7830 R08: 0000000000000000 R09: 0000000000000000
[   52.165216][ T7323] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000008
[   52.173196][ T7323] R13: ffffffffffffffff R14: 0000000000000010 R15: ffffffffffffffff
[   53.309949][ T7323] Shutting down cpus with NMI
[   53.316190][ T7323] Kernel Offset: disabled
[   53.320535][ T7323] Rebooting in 86400 seconds..