Warning: Permanently added '10.128.15.209' (ECDSA) to the list of known hosts.
2020/07/19 08:39:59 fuzzer started
2020/07/19 08:39:59 dialing manager at 10.128.0.105:46731
2020/07/19 08:40:01 syscalls: 3189
2020/07/19 08:40:01 code coverage: enabled
2020/07/19 08:40:01 comparison tracing: enabled
2020/07/19 08:40:01 extra coverage: enabled
2020/07/19 08:40:01 setuid sandbox: enabled
2020/07/19 08:40:01 namespace sandbox: enabled
2020/07/19 08:40:01 Android sandbox: /sys/fs/selinux/policy does not exist
2020/07/19 08:40:01 fault injection: enabled
2020/07/19 08:40:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/07/19 08:40:01 net packet injection: enabled
2020/07/19 08:40:01 net device setup: enabled
2020/07/19 08:40:01 concurrency sanitizer: enabled
2020/07/19 08:40:01 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/07/19 08:40:01 USB emulation: enabled
2020/07/19 08:40:02 suppressing KCSAN reports in functions: 'generic_write_end' '__xa_clear_mark' 'blk_mq_sched_dispatch_requests' 'ext4_mark_iloc_dirty' 'page_counter_charge' 'do_sys_poll' 'ext4_free_inode' '__ext4_new_inode' 'blk_mq_dispatch_rq_list' 'xas_clear_mark' 'do_epoll_wait' 'expire_timers' 'do_nanosleep' 'exit_mm' 'generic_file_buffered_read' 'ext4_writepages' 'kauditd_thread' 'alloc_pid' 'do_syslog' 
syzkaller login: [   49.496698][ T8652] ==================================================================
[   49.504893][ T8652] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle
[   49.511967][ T8652] 
[   49.514271][ T8652] write to 0xffff88812c11cb24 of 1 bytes by task 0 on cpu 1:
[   49.521730][ T8652]  timer_clear_idle+0x2e/0x40
[   49.526534][ T8652]  tick_nohz_idle_retain_tick+0x3e/0x40
[   49.532061][ T8652]  do_idle+0x287/0x310
[   49.536100][ T8652]  cpu_startup_entry+0x15/0x20
[   49.541023][ T8652]  start_secondary+0xe3/0x110
[   49.545682][ T8652]  secondary_startup_64+0xa4/0xb0
[   49.550670][ T8652] 
[   49.552971][ T8652] read to 0xffff88812c11cb24 of 1 bytes by task 8652 on cpu 0:
[   49.560483][ T8652]  __mod_timer+0xb87/0xf00
[   49.564871][ T8652]  mod_timer+0x1b/0x20
[   49.568908][ T8652]  sk_reset_timer+0x1f/0xa0
[   49.573392][ T8652]  tcp_rearm_rto+0x204/0x210
[   49.577949][ T8652]  tcp_write_xmit+0x1bee/0x3f40
[   49.582778][ T8652]  __tcp_push_pending_frames+0x68/0x1c0
[   49.588291][ T8652]  tcp_push+0x2da/0x2f0
[   49.592421][ T8652]  tcp_sendmsg_locked+0x1bf9/0x2200
[   49.597598][ T8652]  tcp_sendmsg+0x2c/0x40
[   49.601807][ T8652]  inet_sendmsg+0x5f/0x80
[   49.606105][ T8652]  sock_write_iter+0x1a1/0x200
[   49.610835][ T8652]  vfs_write+0x607/0x690
[   49.615060][ T8652]  ksys_write+0xce/0x180
[   49.619294][ T8652]  __x64_sys_write+0x3e/0x50
[   49.623875][ T8652]  do_syscall_64+0x51/0xb0
[   49.628277][ T8652]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.634183][ T8652] 
[   49.636479][ T8652] Reported by Kernel Concurrency Sanitizer on:
[   49.642614][ T8652] CPU: 0 PID: 8652 Comm: syz-fuzzer Not tainted 5.8.0-rc5-syzkaller #0
[   49.650907][ T8652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.661146][ T8652] ==================================================================
[   49.669174][ T8652] Kernel panic - not syncing: panic_on_warn set ...
[   49.675750][ T8652] CPU: 0 PID: 8652 Comm: syz-fuzzer Not tainted 5.8.0-rc5-syzkaller #0
[   49.684080][ T8652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.694110][ T8652] Call Trace:
[   49.697378][ T8652]  dump_stack+0x10f/0x19d
[   49.701682][ T8652]  panic+0x207/0x64a
[   49.705564][ T8652]  ? vprintk_emit+0x44a/0x4f0
[   49.710213][ T8652]  kcsan_report+0x684/0x690
[   49.715397][ T8652]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   49.721003][ T8652]  ? __mod_timer+0xb87/0xf00
[   49.725824][ T8652]  ? mod_timer+0x1b/0x20
[   49.730126][ T8652]  ? sk_reset_timer+0x1f/0xa0
[   49.734783][ T8652]  ? tcp_rearm_rto+0x204/0x210
[   49.739602][ T8652]  ? tcp_write_xmit+0x1bee/0x3f40
[   49.744596][ T8652]  ? __tcp_push_pending_frames+0x68/0x1c0
[   49.750285][ T8652]  ? tcp_push+0x2da/0x2f0
[   49.754586][ T8652]  ? tcp_sendmsg_locked+0x1bf9/0x2200
[   49.759926][ T8652]  ? tcp_sendmsg+0x2c/0x40
[   49.764327][ T8652]  ? inet_sendmsg+0x5f/0x80
[   49.768800][ T8652]  ? sock_write_iter+0x1a1/0x200
[   49.773798][ T8652]  ? vfs_write+0x607/0x690
[   49.778191][ T8652]  ? ksys_write+0xce/0x180
[   49.782594][ T8652]  ? __x64_sys_write+0x3e/0x50
[   49.788905][ T8652]  ? do_syscall_64+0x51/0xb0
[   49.793473][ T8652]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.799600][ T8652]  ? __ip_queue_xmit+0x9ba/0x9e0
[   49.804507][ T8652]  ? __copy_skb_header+0x228/0x270
[   49.809609][ T8652]  kcsan_setup_watchpoint+0x453/0x4d0
[   49.815186][ T8652]  __mod_timer+0xb87/0xf00
[   49.819669][ T8652]  mod_timer+0x1b/0x20
[   49.823846][ T8652]  sk_reset_timer+0x1f/0xa0
[   49.828319][ T8652]  tcp_rearm_rto+0x204/0x210
[   49.833489][ T8652]  tcp_write_xmit+0x1bee/0x3f40
[   49.838316][ T8652]  ? _raw_spin_unlock_irqrestore+0x53/0x70
[   49.844096][ T8652]  ? check_preemption_disabled+0x51/0x140
[   49.849800][ T8652]  ? iov_iter_advance+0x1e0/0x890
[   49.854811][ T8652]  ? _copy_from_iter_full+0x1d9/0x6d0
[   49.860242][ T8652]  __tcp_push_pending_frames+0x68/0x1c0
[   49.865757][ T8652]  tcp_push+0x2da/0x2f0
[   49.870928][ T8652]  tcp_sendmsg_locked+0x1bf9/0x2200
[   49.876101][ T8652]  tcp_sendmsg+0x2c/0x40
[   49.880312][ T8652]  inet_sendmsg+0x5f/0x80
[   49.884611][ T8652]  sock_write_iter+0x1a1/0x200
[   49.890409][ T8652]  vfs_write+0x607/0x690
[   49.894626][ T8652]  ksys_write+0xce/0x180
[   49.898841][ T8652]  __x64_sys_write+0x3e/0x50
[   49.903420][ T8652]  do_syscall_64+0x51/0xb0
[   49.907809][ T8652]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.913669][ T8652] RIP: 0033:0x4b3cdb
[   49.917534][ T8652] Code: Bad RIP value.
[   49.921568][ T8652] RSP: 002b:000000c00022d540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   49.929963][ T8652] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3cdb
[   49.937905][ T8652] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006
[   49.945850][ T8652] RBP: 000000c00022d590 R08: 000000c00000a201 R09: 0000000000000007
[   49.953791][ T8652] R10: 000000c000094000 R11: 0000000000000202 R12: 000000000000011e
[   49.961732][ T8652] R13: 000000c000488000 R14: 0000000000000007 R15: 0000000000002e82
[   51.085979][ T8652] Shutting down cpus with NMI
[   51.092233][ T8652] Kernel Offset: disabled
[   51.096546][ T8652] Rebooting in 86400 seconds..