Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts.
2019/10/09 05:55:35 fuzzer started
2019/10/09 05:55:36 dialing manager at 10.128.0.105:35069
2019/10/09 05:55:36 syscalls: 2523
2019/10/09 05:55:36 code coverage: enabled
2019/10/09 05:55:36 comparison tracing: enabled
2019/10/09 05:55:36 extra coverage: extra coverage is not supported by the kernel
2019/10/09 05:55:36 setuid sandbox: enabled
2019/10/09 05:55:36 namespace sandbox: enabled
2019/10/09 05:55:36 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/09 05:55:36 fault injection: enabled
2019/10/09 05:55:36 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/09 05:55:36 net packet injection: enabled
2019/10/09 05:55:36 net device setup: enabled
2019/10/09 05:55:36 concurrency sanitizer: enabled
syzkaller login: [   48.947525][    T0] ==================================================================
[   48.956062][    T0] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[   48.963421][    T0] 
[   48.965778][    T0] read to 0xffff88812bf1b6e4 of 1 bytes by task 7327 on cpu 0:
[   48.973535][    T0]  mod_timer+0x50d/0x7a0
[   48.977787][    T0]  sk_reset_timer+0x2d/0x70
[   48.982391][    T0]  tcp_rearm_rto.part.0+0x190/0x240
[   48.987811][    T0]  tcp_rearm_rto+0x4f/0x60
[   48.992546][    T0]  tcp_event_new_data_sent+0x1bb/0x1c0
[   48.998518][    T0]  tcp_write_xmit+0xa16/0x3080
[   49.003648][    T0]  __tcp_push_pending_frames+0x7b/0x1d0
[   49.009656][    T0]  tcp_push+0x1e9/0x3d0
[   49.014755][    T0]  tcp_sendmsg_locked+0x1d1b/0x1ef0
[   49.021030][    T0]  tcp_sendmsg+0x39/0x60
[   49.026003][    T0]  inet_sendmsg+0x6d/0x90
[   49.030367][    T0]  sock_sendmsg+0x9f/0xc0
[   49.035249][    T0]  sock_write_iter+0x16b/0x210
[   49.040579][    T0]  new_sync_write+0x388/0x4a0
[   49.045452][    T0] 
[   49.047784][    T0] write to 0xffff88812bf1b6e4 of 1 bytes by task 0 on cpu 1:
[   49.055517][    T0]  timer_clear_idle+0x42/0x50
[   49.060467][    T0]  __tick_nohz_idle_restart_tick+0x36/0x1b0
[   49.066477][    T0]  tick_nohz_idle_exit+0x1af/0x1e0
[   49.071859][    T0]  do_idle+0xb0/0x2c0
[   49.076115][    T0]  cpu_startup_entry+0x1b/0x20
[   49.080957][    T0]  start_secondary+0x207/0x260
[   49.085718][    T0]  secondary_startup_64+0xa4/0xb0
[   49.091021][    T0] 
[   49.093527][    T0] Reported by Kernel Concurrency Sanitizer on:
[   49.099927][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0+ #0
[   49.107345][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.117437][    T0] ==================================================================
[   49.126810][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   49.133609][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0+ #0
[   49.140453][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.150581][    T0] Call Trace:
[   49.154011][    T0]  dump_stack+0xf5/0x159
[   49.158561][    T0]  panic+0x209/0x639
[   49.162668][    T0]  ? vprintk_func+0x8d/0x140
[   49.167358][    T0]  kcsan_report.cold+0xc/0x1b
[   49.175681][    T0]  __kcsan_setup_watchpoint+0x3ee/0x510
[   49.181600][    T0]  __tsan_write1+0x32/0x40
[   49.186047][    T0]  timer_clear_idle+0x42/0x50
[   49.190865][    T0]  __tick_nohz_idle_restart_tick+0x36/0x1b0
[   49.196878][    T0]  tick_nohz_idle_exit+0x1af/0x1e0
[   49.202416][    T0]  do_idle+0xb0/0x2c0
[   49.206565][    T0]  ? complete+0x44/0x50
[   49.210934][    T0]  cpu_startup_entry+0x1b/0x20
[   49.216033][    T0]  start_secondary+0x207/0x260
[   49.220910][    T0]  secondary_startup_64+0xa4/0xb0
[   49.228160][    T0] Kernel Offset: disabled
[   49.232501][    T0] Rebooting in 86400 seconds..