Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts.
2020/06/10 00:37:06 fuzzer started
2020/06/10 00:37:06 dialing manager at 10.128.0.105:35015
2020/06/10 00:37:07 syscalls: 3072
2020/06/10 00:37:07 code coverage: enabled
2020/06/10 00:37:07 comparison tracing: enabled
2020/06/10 00:37:07 extra coverage: enabled
2020/06/10 00:37:07 setuid sandbox: enabled
2020/06/10 00:37:07 namespace sandbox: enabled
2020/06/10 00:37:07 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/10 00:37:07 fault injection: enabled
2020/06/10 00:37:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/10 00:37:07 net packet injection: enabled
2020/06/10 00:37:07 net device setup: enabled
2020/06/10 00:37:07 concurrency sanitizer: enabled
2020/06/10 00:37:07 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/10 00:37:07 USB emulation: enabled
syzkaller login: [   53.309232][ T8913] KCSAN: could not find function: '_find_next_bit'
2020/06/10 00:37:08 adding functions to KCSAN blacklist: 'run_timer_softirq' 'futex_wait_queue_me' 'generic_write_end' 'ep_poll' '_find_next_bit' 'do_nanosleep' 'pcpu_alloc' '__ext4_new_inode' 'copy_process' '__send_signal' 
[   66.199962][ T8900] ==================================================================
[   66.208175][ T8900] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[   66.215077][ T8900] 
[   66.217382][ T8900] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1:
[   66.224728][ T8900]  timer_clear_idle+0x3d/0x50
[   66.229410][ T8900]  __tick_nohz_idle_restart_tick+0x32/0x1a0
[   66.235281][ T8900]  tick_nohz_idle_exit+0x19c/0x1d0
[   66.240541][ T8900]  do_idle+0xac/0x290
[   66.244496][ T8900]  cpu_startup_entry+0x14/0x20
[   66.249242][ T8900]  start_secondary+0x169/0x1b0
[   66.253998][ T8900]  secondary_startup_64+0xa4/0xb0
[   66.258991][ T8900] 
[   66.261301][ T8900] read to 0xffff88812c11dca4 of 1 bytes by task 8900 on cpu 0:
[   66.268823][ T8900]  mod_timer+0x631/0x830
[   66.273044][ T8900]  sk_reset_timer+0x29/0xc0
[   66.277539][ T8900]  tcp_rearm_rto+0x1ce/0x280
[   66.282124][ T8900]  tcp_event_new_data_sent+0x23f/0x260
[   66.287573][ T8900]  tcp_write_xmit+0x5c6/0x31e0
[   66.292317][ T8900]  __tcp_push_pending_frames+0x72/0x1b0
[   66.297833][ T8900]  tcp_push+0x1ec/0x3e0
[   66.302051][ T8900]  tcp_sendmsg_locked+0x1de3/0x20f0
[   66.307224][ T8900]  tcp_sendmsg+0x35/0x50
[   66.311441][ T8900]  inet_sendmsg+0x69/0x90
[   66.315744][ T8900]  sock_sendmsg+0x98/0xc0
[   66.320047][ T8900]  sock_write_iter+0x186/0x240
[   66.324789][ T8900]  new_sync_write+0x303/0x400
[   66.329441][ T8900]  __vfs_write+0x9e/0xb0
[   66.333655][ T8900]  vfs_write+0x189/0x380
[   66.337870][ T8900]  ksys_write+0x16a/0x1a0
[   66.342171][ T8900]  __x64_sys_write+0x49/0x60
[   66.346738][ T8900]  do_syscall_64+0xc7/0x3b0
[   66.351225][ T8900]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   66.357081][ T8900] 
[   66.359383][ T8900] Reported by Kernel Concurrency Sanitizer on:
[   66.365519][ T8900] CPU: 0 PID: 8900 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   66.373735][ T8900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   66.383762][ T8900] ==================================================================
[   66.391801][ T8900] Kernel panic - not syncing: panic_on_warn set ...
[   66.398363][ T8900] CPU: 0 PID: 8900 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   66.406653][ T8900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   66.416680][ T8900] Call Trace:
[   66.419951][ T8900]  dump_stack+0x11d/0x187
[   66.424269][ T8900]  panic+0x210/0x640
[   66.428157][ T8900]  ? vprintk_func+0x89/0x13a
[   66.432730][ T8900]  kcsan_report.cold+0xc/0x1a
[   66.437387][ T8900]  kcsan_setup_watchpoint+0x3fb/0x440
[   66.442999][ T8900]  mod_timer+0x631/0x830
[   66.447220][ T8900]  sk_reset_timer+0x29/0xc0
[   66.451700][ T8900]  tcp_rearm_rto+0x1ce/0x280
[   66.456788][ T8900]  tcp_event_new_data_sent+0x23f/0x260
[   66.462226][ T8900]  tcp_write_xmit+0x5c6/0x31e0
[   66.466990][ T8900]  ? iov_iter_advance+0x21c/0x900
[   66.471991][ T8900]  __tcp_push_pending_frames+0x72/0x1b0
[   66.477519][ T8900]  tcp_push+0x1ec/0x3e0
[   66.481651][ T8900]  tcp_sendmsg_locked+0x1de3/0x20f0
[   66.486913][ T8900]  ? aa_label_sk_perm.part.0+0x220/0x290
[   66.493569][ T8900]  tcp_sendmsg+0x35/0x50
[   66.497790][ T8900]  inet_sendmsg+0x69/0x90
[   66.502094][ T8900]  ? inet_send_prepare+0x1f0/0x1f0
[   66.507179][ T8900]  sock_sendmsg+0x98/0xc0
[   66.511496][ T8900]  sock_write_iter+0x186/0x240
[   66.516240][ T8900]  new_sync_write+0x303/0x400
[   66.520917][ T8900]  __vfs_write+0x9e/0xb0
[   66.525133][ T8900]  vfs_write+0x189/0x380
[   66.529360][ T8900]  ksys_write+0x16a/0x1a0
[   66.533666][ T8900]  __x64_sys_write+0x49/0x60
[   66.538236][ T8900]  do_syscall_64+0xc7/0x3b0
[   66.542721][ T8900]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   66.548588][ T8900] RIP: 0033:0x4b3cdb
[   66.552486][ T8900] 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
[   66.572062][ T8900] RSP: 002b:000000c0004c1540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   66.580453][ T8900] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb
[   66.588397][ T8900] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006
[   66.596352][ T8900] RBP: 000000c0004c1590 R08: 000000c00000a201 R09: 0000000000000007
[   66.604298][ T8900] R10: 000000c000114000 R11: 0000000000000202 R12: 000000000000011e
[   66.612241][ T8900] R13: 000000c000296000 R14: 0000000000000007 R15: 0000000000004868
[   67.704933][ T8900] Shutting down cpus with NMI
[   67.710804][ T8900] Kernel Offset: disabled
[   67.715125][ T8900] Rebooting in 86400 seconds..