Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts.
2019/10/14 03:27:56 fuzzer started
2019/10/14 03:27:57 dialing manager at 10.128.0.105:40973
2019/10/14 03:27:57 syscalls: 2523
2019/10/14 03:27:57 code coverage: enabled
2019/10/14 03:27:57 comparison tracing: enabled
2019/10/14 03:27:57 extra coverage: extra coverage is not supported by the kernel
2019/10/14 03:27:57 setuid sandbox: enabled
2019/10/14 03:27:57 namespace sandbox: enabled
2019/10/14 03:27:57 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/14 03:27:57 fault injection: enabled
2019/10/14 03:27:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/14 03:27:57 net packet injection: enabled
2019/10/14 03:27:57 net device setup: enabled
2019/10/14 03:27:57 concurrency sanitizer: enabled
syzkaller login: [   51.117801][ T7161] ==================================================================
[   51.125934][ T7161] BUG: KCSAN: data-race in __zone_watermark_ok / free_one_page
[   51.133479][ T7161] 
[   51.135820][ T7161] read to 0xffff88812fffcf58 of 8 bytes by interrupt on cpu 0:
[   51.143529][ T7161]  __zone_watermark_ok+0x106/0x240
[   51.148634][ T7161]  get_page_from_freelist+0x629/0x2300
[   51.154083][ T7161]  __alloc_pages_nodemask+0x255/0x4d0
[   51.159460][ T7161]  page_frag_alloc+0x11e/0x2d0
[   51.164215][ T7161]  __napi_alloc_skb+0x172/0x210
[   51.169076][ T7161]  page_to_skb+0x8d/0x480
[   51.173483][ T7161]  receive_buf+0x17c7/0x30b0
[   51.178079][ T7161]  virtnet_poll+0x436/0x7d0
[   51.182580][ T7161]  net_rx_action+0x3ae/0xa50
[   51.187274][ T7161]  __do_softirq+0x115/0x33f
[   51.191767][ T7161]  run_ksoftirqd+0x46/0x60
[   51.196171][ T7161]  smpboot_thread_fn+0x37d/0x4a0
[   51.201098][ T7161]  kthread+0x1d4/0x200
[   51.205168][ T7161]  ret_from_fork+0x1f/0x30
[   51.209593][ T7161] 
[   51.211922][ T7161] write to 0xffff88812fffcf58 of 8 bytes by task 7161 on cpu 1:
[   51.219652][ T7161]  free_one_page+0x783/0x840
[   51.224229][ T7161]  __free_pages_ok+0x370/0x640
[   51.228982][ T7161]  page_frag_free+0xd0/0x100
[   51.233567][ T7161]  skb_free_head+0x55/0x80
[   51.237984][ T7161]  skb_release_data+0x25d/0x3a0
[   51.242824][ T7161]  skb_release_all+0x44/0x60
[   51.247423][ T7161]  __kfree_skb+0x1f/0x30
[   51.251652][ T7161]  tcp_recvmsg+0xf59/0x1a30
[   51.256263][ T7161]  inet_recvmsg+0xbb/0x250
[   51.260669][ T7161]  sock_recvmsg+0x92/0xb0
[   51.265007][ T7161]  sock_read_iter+0x15f/0x1e0
[   51.269679][ T7161]  new_sync_read+0x389/0x4f0
[   51.274625][ T7161]  __vfs_read+0xb1/0xc0
[   51.278774][ T7161] 
[   51.281089][ T7161] Reported by Kernel Concurrency Sanitizer on:
[   51.287230][ T7161] CPU: 1 PID: 7161 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   51.294408][ T7161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.304449][ T7161] ==================================================================
[   51.313547][ T7161] Kernel panic - not syncing: panic_on_warn set ...
[   51.320221][ T7161] CPU: 1 PID: 7161 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   51.327412][ T7161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.337508][ T7161] Call Trace:
[   51.340794][ T7161]  dump_stack+0xf5/0x159
[   51.345029][ T7161]  panic+0x209/0x639
[   51.348928][ T7161]  ? inet_recvmsg+0xbb/0x250
[   51.353693][ T7161]  ? vprintk_func+0x8d/0x140
[   51.358277][ T7161]  kcsan_report.cold+0xc/0x1b
[   51.362954][ T7161]  __kcsan_setup_watchpoint+0x3ee/0x510
[   51.368506][ T7161]  __tsan_write8+0x32/0x40
[   51.373176][ T7161]  free_one_page+0x783/0x840
[   51.377780][ T7161]  __free_pages_ok+0x370/0x640
[   51.382610][ T7161]  page_frag_free+0xd0/0x100
[   51.387214][ T7161]  skb_free_head+0x55/0x80
[   51.391621][ T7161]  skb_release_data+0x25d/0x3a0
[   51.396476][ T7161]  skb_release_all+0x44/0x60
[   51.401071][ T7161]  __kfree_skb+0x1f/0x30
[   51.405316][ T7161]  tcp_recvmsg+0xf59/0x1a30
[   51.409828][ T7161]  inet_recvmsg+0xbb/0x250
[   51.414427][ T7161]  ? __tsan_read8+0x2c/0x30
[   51.419096][ T7161]  ? inet_sendpage+0x100/0x100
[   51.423857][ T7161]  sock_recvmsg+0x92/0xb0
[   51.428179][ T7161]  sock_read_iter+0x15f/0x1e0
[   51.432855][ T7161]  new_sync_read+0x389/0x4f0
[   51.437456][ T7161]  __vfs_read+0xb1/0xc0
[   51.441648][ T7161]  vfs_read+0x143/0x2c0
[   51.445888][ T7161]  ksys_read+0xd5/0x1b0
[   51.450039][ T7161]  __x64_sys_read+0x4c/0x60
[   51.454533][ T7161]  do_syscall_64+0xcf/0x2f0
[   51.459033][ T7161]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   51.464911][ T7161] RIP: 0033:0x47c530
[   51.468816][ T7161] 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
[   51.488843][ T7161] RSP: 002b:000000c4203b3818 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   51.497339][ T7161] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   51.505326][ T7161] RDX: 0000000000001000 RSI: 000000c4203ce000 RDI: 0000000000000003
[   51.513594][ T7161] RBP: 000000c4203b3870 R08: 0000000000000000 R09: 0000000000000000
[   51.521709][ T7161] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   51.529687][ T7161] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   52.673230][ T7161] Shutting down cpus with NMI
[   52.679527][ T7161] Kernel Offset: disabled
[   52.683906][ T7161] Rebooting in 86400 seconds..