Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts.
2020/05/20 13:57:19 fuzzer started
2020/05/20 13:57:19 dialing manager at 10.128.0.105:44971
2020/05/20 13:57:19 syscalls: 3055
2020/05/20 13:57:19 code coverage: enabled
2020/05/20 13:57:19 comparison tracing: enabled
2020/05/20 13:57:19 extra coverage: enabled
2020/05/20 13:57:19 setuid sandbox: enabled
2020/05/20 13:57:19 namespace sandbox: enabled
2020/05/20 13:57:19 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/20 13:57:19 fault injection: enabled
2020/05/20 13:57:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/20 13:57:19 net packet injection: enabled
2020/05/20 13:57:19 net device setup: enabled
2020/05/20 13:57:19 concurrency sanitizer: enabled
2020/05/20 13:57:19 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/20 13:57:19 USB emulation: enabled
2020/05/20 13:57:19 adding functions to KCSAN blacklist: 'shmem_getpage_gfp' 'ep_poll' 'do_signal_stop' 'add_timer' 'alloc_pid' 'xas_clear_mark' 'find_get_pages_range_tag' 'echo_char' 
syzkaller login: [   58.718221][ T8909] ==================================================================
[   58.726325][ T8909] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[   58.733227][ T8909] 
[   58.735682][ T8909] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1:
[   58.743045][ T8909]  timer_clear_idle+0x3d/0x50
[   58.747702][ T8909]  __tick_nohz_idle_restart_tick+0x32/0x1a0
[   58.753577][ T8909]  tick_nohz_idle_exit+0x19c/0x1d0
[   58.758838][ T8909]  do_idle+0xac/0x290
[   58.762796][ T8909]  cpu_startup_entry+0x14/0x20
[   58.768501][ T8909]  start_secondary+0x169/0x1b0
[   58.773302][ T8909]  secondary_startup_64+0xa4/0xb0
[   58.778305][ T8909] 
[   58.780633][ T8909] read to 0xffff88812c11dca4 of 1 bytes by task 8909 on cpu 0:
[   58.788168][ T8909]  mod_timer+0x631/0x830
[   58.792384][ T8909]  sk_reset_timer+0x29/0xc0
[   58.796961][ T8909]  tcp_rearm_rto+0x1ce/0x280
[   58.801634][ T8909]  tcp_event_new_data_sent+0x23f/0x260
[   58.807081][ T8909]  tcp_write_xmit+0x5c6/0x31e0
[   58.812168][ T8909]  __tcp_push_pending_frames+0x72/0x1b0
[   58.817707][ T8909]  tcp_push+0x1ec/0x3e0
[   58.821860][ T8909]  tcp_sendmsg_locked+0x1de3/0x20f0
[   58.827045][ T8909]  tcp_sendmsg+0x35/0x50
[   58.831275][ T8909]  inet_sendmsg+0x69/0x90
[   58.836390][ T8909]  sock_sendmsg+0x98/0xc0
[   58.840793][ T8909]  sock_write_iter+0x186/0x240
[   58.845542][ T8909]  new_sync_write+0x303/0x400
[   58.850210][ T8909]  __vfs_write+0x9e/0xb0
[   58.854436][ T8909]  vfs_write+0x189/0x380
[   58.858650][ T8909]  ksys_write+0x16a/0x1a0
[   58.862965][ T8909]  __x64_sys_write+0x49/0x60
[   58.867541][ T8909]  do_syscall_64+0xc7/0x3b0
[   58.872019][ T8909]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.877877][ T8909] 
[   58.880525][ T8909] Reported by Kernel Concurrency Sanitizer on:
[   58.886665][ T8909] CPU: 0 PID: 8909 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   58.894869][ T8909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.905086][ T8909] ==================================================================
[   58.913126][ T8909] Kernel panic - not syncing: panic_on_warn set ...
[   58.919700][ T8909] CPU: 0 PID: 8909 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   58.928027][ T8909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.938067][ T8909] Call Trace:
[   58.941340][ T8909]  dump_stack+0x11d/0x187
[   58.945648][ T8909]  panic+0x210/0x640
[   58.949534][ T8909]  ? vprintk_func+0x89/0x13a
[   58.954103][ T8909]  kcsan_report.cold+0xc/0x1a
[   58.959022][ T8909]  kcsan_setup_watchpoint+0x3fb/0x440
[   58.964400][ T8909]  mod_timer+0x631/0x830
[   58.968632][ T8909]  sk_reset_timer+0x29/0xc0
[   58.973114][ T8909]  tcp_rearm_rto+0x1ce/0x280
[   58.977694][ T8909]  tcp_event_new_data_sent+0x23f/0x260
[   58.983132][ T8909]  tcp_write_xmit+0x5c6/0x31e0
[   58.987900][ T8909]  ? iov_iter_advance+0x21c/0x900
[   58.992932][ T8909]  __tcp_push_pending_frames+0x72/0x1b0
[   58.998454][ T8909]  tcp_push+0x1ec/0x3e0
[   59.002607][ T8909]  tcp_sendmsg_locked+0x1de3/0x20f0
[   59.007786][ T8909]  ? aa_label_sk_perm.part.0+0x220/0x290
[   59.013407][ T8909]  tcp_sendmsg+0x35/0x50
[   59.017626][ T8909]  inet_sendmsg+0x69/0x90
[   59.021933][ T8909]  ? inet_send_prepare+0x1f0/0x1f0
[   59.027030][ T8909]  sock_sendmsg+0x98/0xc0
[   59.031338][ T8909]  sock_write_iter+0x186/0x240
[   59.036082][ T8909]  new_sync_write+0x303/0x400
[   59.040745][ T8909]  __vfs_write+0x9e/0xb0
[   59.044986][ T8909]  vfs_write+0x189/0x380
[   59.049203][ T8909]  ksys_write+0x16a/0x1a0
[   59.053511][ T8909]  __x64_sys_write+0x49/0x60
[   59.058090][ T8909]  do_syscall_64+0xc7/0x3b0
[   59.062588][ T8909]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   59.068452][ T8909] RIP: 0033:0x47c530
[   59.072348][ T8909] 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
[   59.091936][ T8909] RSP: 002b:000000c4210614a0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   59.100333][ T8909] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   59.108279][ T8909] RDX: 0000000000000007 RSI: 000000c4202ae200 RDI: 0000000000000003
[   59.116224][ T8909] RBP: 000000c4210614f8 R08: 0000000000000000 R09: 0000000000000000
[   59.124169][ T8909] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c4200c3b00
[   59.132115][ T8909] R13: 0000000000000007 R14: 0000000000c77780 R15: 0000000000003812
[   60.216249][ T8909] Shutting down cpus with NMI
[   60.222352][ T8909] Kernel Offset: disabled
[   60.226670][ T8909] Rebooting in 86400 seconds..