Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts.
2020/06/30 00:07:25 fuzzer started
2020/06/30 00:07:25 dialing manager at 10.128.0.105:43237
2020/06/30 00:07:25 syscalls: 3106
2020/06/30 00:07:25 code coverage: enabled
2020/06/30 00:07:25 comparison tracing: enabled
2020/06/30 00:07:25 extra coverage: enabled
2020/06/30 00:07:25 setuid sandbox: enabled
2020/06/30 00:07:25 namespace sandbox: enabled
2020/06/30 00:07:25 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/30 00:07:25 fault injection: enabled
2020/06/30 00:07:25 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/30 00:07:25 net packet injection: enabled
2020/06/30 00:07:25 net device setup: enabled
2020/06/30 00:07:25 concurrency sanitizer: enabled
2020/06/30 00:07:25 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/30 00:07:25 USB emulation: enabled
2020/06/30 00:07:26 suppressing KCSAN reports in functions: 'n_tty_receive_buf_common' 'io_sq_thread' 'ext4_free_inodes_count' 'ext4_free_inode' 'futex_wait_queue_me' 'copy_process' 'do_epoll_wait' '__ext4_new_inode' 
syzkaller login: [   35.439317][ T8659] ==================================================================
[   35.447425][ T8659] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle
[   35.454607][ T8659] 
[   35.456907][ T8659] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0:
[   35.464249][ T8659]  timer_clear_idle+0x2e/0x40
[   35.468950][ T8659]  tick_nohz_idle_retain_tick+0x3e/0x40
[   35.474465][ T8659]  do_idle+0x287/0x310
[   35.478510][ T8659]  cpu_startup_entry+0x15/0x20
[   35.483244][ T8659]  rest_init+0xd8/0xe0
[   35.487288][ T8659]  arch_call_rest_init+0xa/0xb
[   35.492020][ T8659]  start_kernel+0x608/0x6d0
[   35.496493][ T8659]  secondary_startup_64+0xa4/0xb0
[   35.501483][ T8659] 
[   35.503825][ T8659] read to 0xffff88812c01cb24 of 1 bytes by task 8659 on cpu 1:
[   35.511340][ T8659]  __mod_timer+0xb87/0xf00
[   35.515725][ T8659]  mod_timer+0x1b/0x20
[   35.519809][ T8659]  sk_reset_timer+0x1f/0xa0
[   35.524333][ T8659]  tcp_rearm_rto+0x204/0x210
[   35.528891][ T8659]  tcp_write_xmit+0x1bee/0x3f40
[   35.533712][ T8659]  __tcp_push_pending_frames+0x68/0x1c0
[   35.539227][ T8659]  tcp_push+0x2da/0x2f0
[   35.543364][ T8659]  tcp_sendmsg_locked+0x1bf9/0x2200
[   35.548527][ T8659]  tcp_sendmsg+0x2c/0x40
[   35.552736][ T8659]  inet_sendmsg+0x5f/0x80
[   35.557034][ T8659]  sock_write_iter+0x1a1/0x200
[   35.561766][ T8659]  __vfs_write+0x2d8/0x340
[   35.566148][ T8659]  vfs_write+0x19b/0x350
[   35.570360][ T8659]  ksys_write+0xce/0x180
[   35.574570][ T8659]  __x64_sys_write+0x3e/0x50
[   35.579126][ T8659]  do_syscall_64+0x51/0xb0
[   35.583513][ T8659]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   35.589368][ T8659] 
[   35.591664][ T8659] Reported by Kernel Concurrency Sanitizer on:
[   35.597803][ T8659] CPU: 1 PID: 8659 Comm: syz-fuzzer Not tainted 5.8.0-rc3-syzkaller #0
[   35.606017][ T8659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.616051][ T8659] ==================================================================
[   35.624081][ T8659] Kernel panic - not syncing: panic_on_warn set ...
[   35.630664][ T8659] CPU: 1 PID: 8659 Comm: syz-fuzzer Not tainted 5.8.0-rc3-syzkaller #0
[   35.638867][ T8659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.648891][ T8659] Call Trace:
[   35.652152][ T8659]  dump_stack+0x10f/0x19d
[   35.656472][ T8659]  panic+0x207/0x64a
[   35.660337][ T8659]  ? vprintk_emit+0x44a/0x4f0
[   35.664987][ T8659]  kcsan_report+0x684/0x690
[   35.669478][ T8659]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   35.674993][ T8659]  ? __mod_timer+0xb87/0xf00
[   35.679562][ T8659]  ? mod_timer+0x1b/0x20
[   35.683771][ T8659]  ? sk_reset_timer+0x1f/0xa0
[   35.688416][ T8659]  ? tcp_rearm_rto+0x204/0x210
[   35.693147][ T8659]  ? tcp_write_xmit+0x1bee/0x3f40
[   35.698159][ T8659]  ? __tcp_push_pending_frames+0x68/0x1c0
[   35.703845][ T8659]  ? tcp_push+0x2da/0x2f0
[   35.708155][ T8659]  ? tcp_sendmsg_locked+0x1bf9/0x2200
[   35.713494][ T8659]  ? tcp_sendmsg+0x2c/0x40
[   35.717890][ T8659]  ? inet_sendmsg+0x5f/0x80
[   35.722363][ T8659]  ? sock_write_iter+0x1a1/0x200
[   35.727268][ T8659]  ? __vfs_write+0x2d8/0x340
[   35.731838][ T8659]  ? vfs_write+0x19b/0x350
[   35.736222][ T8659]  ? ksys_write+0xce/0x180
[   35.740607][ T8659]  ? __x64_sys_write+0x3e/0x50
[   35.745339][ T8659]  ? do_syscall_64+0x51/0xb0
[   35.749900][ T8659]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   35.755937][ T8659]  ? __ip_queue_xmit+0x9ba/0x9e0
[   35.760841][ T8659]  ? __copy_skb_header+0x228/0x270
[   35.765923][ T8659]  kcsan_setup_watchpoint+0x453/0x4d0
[   35.771266][ T8659]  __mod_timer+0xb87/0xf00
[   35.775662][ T8659]  mod_timer+0x1b/0x20
[   35.779725][ T8659]  sk_reset_timer+0x1f/0xa0
[   35.784193][ T8659]  tcp_rearm_rto+0x204/0x210
[   35.788751][ T8659]  tcp_write_xmit+0x1bee/0x3f40
[   35.793573][ T8659]  ? _raw_spin_unlock_irqrestore+0x53/0x70
[   35.799466][ T8659]  ? check_preemption_disabled+0x51/0x140
[   35.805154][ T8659]  ? iov_iter_advance+0x1e0/0x890
[   35.810149][ T8659]  ? _copy_from_iter_full+0x1d9/0x6d0
[   35.815495][ T8659]  __tcp_push_pending_frames+0x68/0x1c0
[   35.821010][ T8659]  tcp_push+0x2da/0x2f0
[   35.825152][ T8659]  tcp_sendmsg_locked+0x1bf9/0x2200
[   35.830325][ T8659]  tcp_sendmsg+0x2c/0x40
[   35.834538][ T8659]  inet_sendmsg+0x5f/0x80
[   35.838852][ T8659]  sock_write_iter+0x1a1/0x200
[   35.843587][ T8659]  __vfs_write+0x2d8/0x340
[   35.847993][ T8659]  vfs_write+0x19b/0x350
[   35.852218][ T8659]  ksys_write+0xce/0x180
[   35.856434][ T8659]  __x64_sys_write+0x3e/0x50
[   35.861013][ T8659]  do_syscall_64+0x51/0xb0
[   35.865413][ T8659]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   35.871287][ T8659] RIP: 0033:0x4b3cdb
[   35.875156][ T8659] Code: Bad RIP value.
[   35.879203][ T8659] RSP: 002b:000000c0000e3540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   35.887589][ T8659] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb
[   35.895621][ T8659] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006
[   35.903564][ T8659] RBP: 000000c0000e3590 R08: 000000c00000a201 R09: 0000000000000007
[   35.911517][ T8659] R10: 000000c000092000 R11: 0000000000000202 R12: 000000000000011e
[   35.919470][ T8659] R13: 000000c000484000 R14: 0000000000000007 R15: 00000000000004a0
[   37.039391][ T8659] Shutting down cpus with NMI
[   37.045420][ T8659] Kernel Offset: disabled
[   37.049730][ T8659] Rebooting in 86400 seconds..