Warning: Permanently added '10.128.0.246' (ECDSA) to the list of known hosts.
2019/10/15 03:06:16 fuzzer started
2019/10/15 03:06:18 dialing manager at 10.128.0.105:33683
2019/10/15 03:06:18 syscalls: 2523
2019/10/15 03:06:18 code coverage: enabled
2019/10/15 03:06:18 comparison tracing: enabled
2019/10/15 03:06:18 extra coverage: extra coverage is not supported by the kernel
2019/10/15 03:06:18 setuid sandbox: enabled
2019/10/15 03:06:18 namespace sandbox: enabled
2019/10/15 03:06:18 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/15 03:06:18 fault injection: enabled
2019/10/15 03:06:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/15 03:06:18 net packet injection: enabled
2019/10/15 03:06:18 net device setup: enabled
2019/10/15 03:06:18 concurrency sanitizer: enabled
syzkaller login: [   48.744882][ T7385] ==================================================================
[   48.753129][ T7385] BUG: KCSAN: data-race in __zone_watermark_ok / free_one_page
[   48.760646][ T7385] 
[   48.762961][ T7385] read to 0xffff88812fffcf58 of 8 bytes by interrupt on cpu 1:
[   48.770489][ T7385]  __zone_watermark_ok+0x106/0x240
[   48.776107][ T7385]  get_page_from_freelist+0x629/0x2300
[   48.781551][ T7385]  __alloc_pages_nodemask+0x255/0x4d0
[   48.786905][ T7385]  alloc_pages_current+0xd1/0x170
[   48.791918][ T7385]  skb_page_frag_refill+0x16f/0x260
[   48.797105][ T7385]  try_fill_recv+0x51f/0xdc0
[   48.801679][ T7385]  virtnet_poll+0x64c/0x7d0
[   48.806164][ T7385]  net_rx_action+0x3ae/0xa50
[   48.810756][ T7385]  __do_softirq+0x115/0x33f
[   48.815244][ T7385]  run_ksoftirqd+0x46/0x60
[   48.819809][ T7385]  smpboot_thread_fn+0x37d/0x4a0
[   48.824732][ T7385]  kthread+0x1d4/0x200
[   48.828783][ T7385]  ret_from_fork+0x1f/0x30
[   48.833521][ T7385] 
[   48.835835][ T7385] write to 0xffff88812fffcf58 of 8 bytes by task 7385 on cpu 0:
[   48.843458][ T7385]  free_one_page+0x214/0x840
[   48.848034][ T7385]  __free_pages_ok+0x370/0x640
[   48.852794][ T7385]  page_frag_free+0xd0/0x100
[   48.857368][ T7385]  skb_free_head+0x55/0x80
[   48.861793][ T7385]  skb_release_data+0x25d/0x3a0
[   48.866623][ T7385]  skb_release_all+0x44/0x60
[   48.871370][ T7385]  __kfree_skb+0x1f/0x30
[   48.875614][ T7385]  tcp_recvmsg+0xf59/0x1a30
[   48.880190][ T7385]  inet_recvmsg+0xbb/0x250
[   48.884592][ T7385]  sock_recvmsg+0x92/0xb0
[   48.888901][ T7385]  sock_read_iter+0x15f/0x1e0
[   48.893560][ T7385]  new_sync_read+0x389/0x4f0
[   48.898226][ T7385]  __vfs_read+0xb1/0xc0
[   48.902355][ T7385] 
[   48.904666][ T7385] Reported by Kernel Concurrency Sanitizer on:
[   48.910805][ T7385] CPU: 0 PID: 7385 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   48.917888][ T7385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.927921][ T7385] ==================================================================
[   48.936048][ T7385] Kernel panic - not syncing: panic_on_warn set ...
[   48.942618][ T7385] CPU: 0 PID: 7385 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   48.949701][ T7385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.960096][ T7385] Call Trace:
[   48.963403][ T7385]  dump_stack+0xf5/0x159
[   48.967632][ T7385]  panic+0x209/0x639
[   48.971512][ T7385]  ? inet_recvmsg+0xbb/0x250
[   48.976086][ T7385]  ? vprintk_func+0x8d/0x140
[   48.980673][ T7385]  kcsan_report.cold+0xc/0x1b
[   48.985337][ T7385]  __kcsan_setup_watchpoint+0x3ee/0x510
[   48.990954][ T7385]  __tsan_write8+0x32/0x40
[   48.995354][ T7385]  free_one_page+0x214/0x840
[   48.999937][ T7385]  __free_pages_ok+0x370/0x640
[   49.004701][ T7385]  page_frag_free+0xd0/0x100
[   49.009276][ T7385]  skb_free_head+0x55/0x80
[   49.013678][ T7385]  skb_release_data+0x25d/0x3a0
[   49.018527][ T7385]  skb_release_all+0x44/0x60
[   49.023113][ T7385]  __kfree_skb+0x1f/0x30
[   49.027354][ T7385]  tcp_recvmsg+0xf59/0x1a30
[   49.031855][ T7385]  inet_recvmsg+0xbb/0x250
[   49.036251][ T7385]  ? __tsan_read8+0x2c/0x30
[   49.040738][ T7385]  ? inet_sendpage+0x100/0x100
[   49.045486][ T7385]  sock_recvmsg+0x92/0xb0
[   49.049807][ T7385]  sock_read_iter+0x15f/0x1e0
[   49.054482][ T7385]  new_sync_read+0x389/0x4f0
[   49.059066][ T7385]  __vfs_read+0xb1/0xc0
[   49.063206][ T7385]  vfs_read+0x143/0x2c0
[   49.067347][ T7385]  ksys_read+0xd5/0x1b0
[   49.071493][ T7385]  __x64_sys_read+0x4c/0x60
[   49.075984][ T7385]  do_syscall_64+0xcf/0x2f0
[   49.080474][ T7385]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.086351][ T7385] RIP: 0033:0x47c530
[   49.090236][ T7385] 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
[   49.110268][ T7385] RSP: 002b:000000c4203b37d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   49.118699][ T7385] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   49.126652][ T7385] RDX: 0000000000001000 RSI: 000000c4203c4000 RDI: 0000000000000003
[   49.134603][ T7385] RBP: 000000c4203b3830 R08: 0000000000000000 R09: 0000000000000000
[   49.142587][ T7385] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   49.150542][ T7385] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   50.288042][ T7385] Shutting down cpus with NMI
[   50.294228][ T7385] Kernel Offset: disabled
[   50.298559][ T7385] Rebooting in 86400 seconds..