Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts.
2020/05/30 14:30:53 fuzzer started
2020/05/30 14:30:53 dialing manager at 10.128.0.105:36125
2020/05/30 14:30:53 syscalls: 3055
2020/05/30 14:30:53 code coverage: enabled
2020/05/30 14:30:53 comparison tracing: enabled
2020/05/30 14:30:53 extra coverage: enabled
2020/05/30 14:30:53 setuid sandbox: enabled
2020/05/30 14:30:53 namespace sandbox: enabled
2020/05/30 14:30:53 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/30 14:30:53 fault injection: enabled
2020/05/30 14:30:53 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/30 14:30:53 net packet injection: enabled
2020/05/30 14:30:53 net device setup: enabled
2020/05/30 14:30:53 concurrency sanitizer: enabled
2020/05/30 14:30:53 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/30 14:30:53 USB emulation: enabled
2020/05/30 14:30:53 adding functions to KCSAN blacklist: 'ktime_get_real_seconds' 'ep_poll' 'do_wait' 
syzkaller login: [   57.798850][ T8916] ==================================================================
[   57.806966][ T8916] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[   57.813874][ T8916] 
[   57.816185][ T8916] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1:
[   57.824510][ T8916]  timer_clear_idle+0x3d/0x50
[   57.832297][ T8916]  __tick_nohz_idle_restart_tick+0x32/0x1a0
[   57.838293][ T8916]  tick_nohz_idle_exit+0x19c/0x1d0
[   57.843670][ T8916]  do_idle+0xac/0x290
[   57.847635][ T8916]  cpu_startup_entry+0x14/0x20
[   57.852384][ T8916]  start_secondary+0x169/0x1b0
[   57.857132][ T8916]  secondary_startup_64+0xa4/0xb0
[   57.862133][ T8916] 
[   57.864449][ T8916] read to 0xffff88812c11dca4 of 1 bytes by task 8916 on cpu 0:
[   57.872008][ T8916]  mod_timer+0x631/0x830
[   57.876232][ T8916]  sk_reset_timer+0x29/0xc0
[   57.880715][ T8916]  tcp_rearm_rto+0x1ce/0x280
[   57.885287][ T8916]  tcp_event_new_data_sent+0x23f/0x260
[   57.890728][ T8916]  tcp_write_xmit+0x5c6/0x31e0
[   57.895494][ T8916]  __tcp_push_pending_frames+0x72/0x1b0
[   57.901019][ T8916]  tcp_push+0x1ec/0x3e0
[   57.905171][ T8916]  tcp_sendmsg_locked+0x1de3/0x20f0
[   57.910783][ T8916]  tcp_sendmsg+0x35/0x50
[   57.915005][ T8916]  inet_sendmsg+0x69/0x90
[   57.919316][ T8916]  sock_sendmsg+0x98/0xc0
[   57.923649][ T8916]  sock_write_iter+0x186/0x240
[   57.928396][ T8916]  new_sync_write+0x303/0x400
[   57.933207][ T8916]  __vfs_write+0x9e/0xb0
[   57.937435][ T8916]  vfs_write+0x189/0x380
[   57.941666][ T8916]  ksys_write+0x16a/0x1a0
[   57.946144][ T8916]  __x64_sys_write+0x49/0x60
[   57.950746][ T8916]  do_syscall_64+0xc7/0x3b0
[   57.955344][ T8916]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.961227][ T8916] 
[   57.963549][ T8916] Reported by Kernel Concurrency Sanitizer on:
[   57.969695][ T8916] CPU: 0 PID: 8916 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   57.978103][ T8916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.988159][ T8916] ==================================================================
[   57.996203][ T8916] Kernel panic - not syncing: panic_on_warn set ...
[   58.002773][ T8916] CPU: 0 PID: 8916 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   58.010988][ T8916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.021028][ T8916] Call Trace:
[   58.024306][ T8916]  dump_stack+0x11d/0x187
[   58.028748][ T8916]  panic+0x210/0x640
[   58.032725][ T8916]  ? vprintk_func+0x89/0x13a
[   58.037316][ T8916]  kcsan_report.cold+0xc/0x1a
[   58.041987][ T8916]  kcsan_setup_watchpoint+0x3fb/0x440
[   58.047348][ T8916]  mod_timer+0x631/0x830
[   58.051582][ T8916]  sk_reset_timer+0x29/0xc0
[   58.056088][ T8916]  tcp_rearm_rto+0x1ce/0x280
[   58.060665][ T8916]  tcp_event_new_data_sent+0x23f/0x260
[   58.066199][ T8916]  tcp_write_xmit+0x5c6/0x31e0
[   58.071570][ T8916]  ? iov_iter_advance+0x21c/0x900
[   58.076582][ T8916]  __tcp_push_pending_frames+0x72/0x1b0
[   58.082109][ T8916]  tcp_push+0x1ec/0x3e0
[   58.086266][ T8916]  tcp_sendmsg_locked+0x1de3/0x20f0
[   58.091471][ T8916]  ? aa_label_sk_perm.part.0+0x220/0x290
[   58.097318][ T8916]  tcp_sendmsg+0x35/0x50
[   58.102269][ T8916]  inet_sendmsg+0x69/0x90
[   58.106590][ T8916]  ? inet_send_prepare+0x1f0/0x1f0
[   58.111693][ T8916]  sock_sendmsg+0x98/0xc0
[   58.116194][ T8916]  sock_write_iter+0x186/0x240
[   58.120970][ T8916]  new_sync_write+0x303/0x400
[   58.125912][ T8916]  __vfs_write+0x9e/0xb0
[   58.130154][ T8916]  vfs_write+0x189/0x380
[   58.134394][ T8916]  ksys_write+0x16a/0x1a0
[   58.138717][ T8916]  __x64_sys_write+0x49/0x60
[   58.143289][ T8916]  do_syscall_64+0xc7/0x3b0
[   58.147780][ T8916]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.153649][ T8916] RIP: 0033:0x4b3cdb
[   58.157523][ T8916] 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
[   58.177138][ T8916] RSP: 002b:000000c00081d540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   58.185537][ T8916] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3cdb
[   58.193509][ T8916] RDX: 0000000000000007 RSI: 000000c00000a3e0 RDI: 0000000000000006
[   58.203297][ T8916] RBP: 000000c00081d590 R08: 000000c00000a301 R09: 0000000000000007
[   58.211263][ T8916] R10: 000000c000112000 R11: 0000000000000202 R12: 000000000000011e
[   58.219235][ T8916] R13: 000000c000280000 R14: 0000000000000007 R15: 0000000000000cc0
[   59.303973][ T8916] Shutting down cpus with NMI
[   59.310074][ T8916] Kernel Offset: disabled
[   59.315449][ T8916] Rebooting in 86400 seconds..