Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts.
2020/06/03 12:45:59 fuzzer started
2020/06/03 12:45:59 dialing manager at 10.128.0.105:40391
2020/06/03 12:46:03 syscalls: 3055
2020/06/03 12:46:03 code coverage: enabled
2020/06/03 12:46:03 comparison tracing: enabled
2020/06/03 12:46:03 extra coverage: enabled
2020/06/03 12:46:03 setuid sandbox: enabled
2020/06/03 12:46:03 namespace sandbox: enabled
2020/06/03 12:46:03 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/03 12:46:03 fault injection: enabled
2020/06/03 12:46:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/03 12:46:03 net packet injection: enabled
2020/06/03 12:46:03 net device setup: enabled
2020/06/03 12:46:03 concurrency sanitizer: enabled
2020/06/03 12:46:03 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/03 12:46:03 USB emulation: enabled
2020/06/03 12:46:04 adding functions to KCSAN blacklist: 'do_nanosleep' 'generic_write_end' 'ep_poll' 'kauditd_thread' 'page_counter_charge' 'alloc_pid' '__ext4_new_inode' 'n_tty_receive_buf_common' 'find_get_pages_range_tag' 'generic_file_read_iter' 
syzkaller login: [   77.588312][ T8903] ==================================================================
[   77.596446][ T8903] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[   77.603351][ T8903] 
[   77.605660][ T8903] write to 0xffff88812c01dca4 of 1 bytes by task 0 on cpu 0:
[   77.613005][ T8903]  timer_clear_idle+0x3d/0x50
[   77.617660][ T8903]  __tick_nohz_idle_restart_tick+0x32/0x1a0
[   77.624261][ T8903]  tick_nohz_idle_exit+0x19c/0x1d0
[   77.629353][ T8903]  do_idle+0xac/0x290
[   77.633308][ T8903]  cpu_startup_entry+0x14/0x20
[   77.638057][ T8903]  rest_init+0xe4/0xeb
[   77.642102][ T8903]  arch_call_rest_init+0x13/0x2b
[   77.647014][ T8903]  start_kernel+0x7fe/0x823
[   77.651500][ T8903]  secondary_startup_64+0xa4/0xb0
[   77.656491][ T8903] 
[   77.658805][ T8903] read to 0xffff88812c01dca4 of 1 bytes by task 8903 on cpu 1:
[   77.666322][ T8903]  mod_timer+0x631/0x830
[   77.670539][ T8903]  sk_reset_timer+0x29/0xc0
[   77.675014][ T8903]  tcp_rearm_rto+0x1ce/0x280
[   77.679579][ T8903]  tcp_event_new_data_sent+0x23f/0x260
[   77.685019][ T8903]  tcp_write_xmit+0x5c6/0x31e0
[   77.689759][ T8903]  __tcp_push_pending_frames+0x72/0x1b0
[   77.695285][ T8903]  tcp_push+0x1ec/0x3e0
[   77.699414][ T8903]  tcp_sendmsg_locked+0x1de3/0x20f0
[   77.704585][ T8903]  tcp_sendmsg+0x35/0x50
[   77.708800][ T8903]  inet_sendmsg+0x69/0x90
[   77.713103][ T8903]  sock_sendmsg+0x98/0xc0
[   77.717420][ T8903]  sock_write_iter+0x186/0x240
[   77.722162][ T8903]  new_sync_write+0x303/0x400
[   77.726811][ T8903]  __vfs_write+0x9e/0xb0
[   77.731027][ T8903]  vfs_write+0x189/0x380
[   77.735255][ T8903]  ksys_write+0x16a/0x1a0
[   77.739554][ T8903]  __x64_sys_write+0x49/0x60
[   77.744130][ T8903]  do_syscall_64+0xc7/0x3b0
[   77.748607][ T8903]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   77.754476][ T8903] 
[   77.756775][ T8903] Reported by Kernel Concurrency Sanitizer on:
[   77.762902][ T8903] CPU: 1 PID: 8903 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   77.771218][ T8903] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   77.781244][ T8903] ==================================================================
[   77.789277][ T8903] Kernel panic - not syncing: panic_on_warn set ...
[   77.795839][ T8903] CPU: 1 PID: 8903 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   77.804083][ T8903] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   77.814118][ T8903] Call Trace:
[   77.817418][ T8903]  dump_stack+0x11d/0x187
[   77.821737][ T8903]  panic+0x210/0x640
[   77.825611][ T8903]  ? vprintk_func+0x89/0x13a
[   77.830177][ T8903]  kcsan_report.cold+0xc/0x1a
[   77.834833][ T8903]  kcsan_setup_watchpoint+0x3fb/0x440
[   77.840198][ T8903]  mod_timer+0x631/0x830
[   77.844434][ T8903]  sk_reset_timer+0x29/0xc0
[   77.848928][ T8903]  tcp_rearm_rto+0x1ce/0x280
[   77.853502][ T8903]  tcp_event_new_data_sent+0x23f/0x260
[   77.858948][ T8903]  tcp_write_xmit+0x5c6/0x31e0
[   77.863696][ T8903]  ? iov_iter_advance+0x21c/0x900
[   77.868698][ T8903]  __tcp_push_pending_frames+0x72/0x1b0
[   77.874217][ T8903]  tcp_push+0x1ec/0x3e0
[   77.878361][ T8903]  tcp_sendmsg_locked+0x1de3/0x20f0
[   77.883539][ T8903]  ? aa_label_sk_perm.part.0+0x220/0x290
[   77.889148][ T8903]  tcp_sendmsg+0x35/0x50
[   77.893377][ T8903]  inet_sendmsg+0x69/0x90
[   77.897701][ T8903]  ? inet_send_prepare+0x1f0/0x1f0
[   77.902789][ T8903]  sock_sendmsg+0x98/0xc0
[   77.907108][ T8903]  sock_write_iter+0x186/0x240
[   77.911861][ T8903]  new_sync_write+0x303/0x400
[   77.916645][ T8903]  __vfs_write+0x9e/0xb0
[   77.920872][ T8903]  vfs_write+0x189/0x380
[   77.925094][ T8903]  ksys_write+0x16a/0x1a0
[   77.929414][ T8903]  __x64_sys_write+0x49/0x60
[   77.934096][ T8903]  do_syscall_64+0xc7/0x3b0
[   77.938638][ T8903]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   77.944508][ T8903] RIP: 0033:0x4b3cdb
[   77.948385][ T8903] Code: ff e9 69 ff ff ff cc cc cc cc cc cc cc cc cc e8 bb a1 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 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
[   77.967975][ T8903] RSP: 002b:000000c0000e5540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   77.976357][ T8903] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb
[   77.984337][ T8903] RDX: 0000000000000007 RSI: 000000c00000a3e0 RDI: 0000000000000006
[   77.992294][ T8903] RBP: 000000c0000e5590 R08: 000000c00000a301 R09: 0000000000000007
[   78.000241][ T8903] R10: 000000c0000ac000 R11: 0000000000000202 R12: 000000000000011e
[   78.008196][ T8903] R13: 000000c0003ae000 R14: 0000000000000007 R15: 00000000000022d2
[   79.091536][ T8903] Shutting down cpus with NMI
[   79.097481][ T8903] Kernel Offset: disabled
[   79.101797][ T8903] Rebooting in 86400 seconds..