Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts.
2020/06/07 10:21:58 fuzzer started
2020/06/07 10:21:59 dialing manager at 10.128.0.105:43689
2020/06/07 10:22:06 syscalls: 3055
2020/06/07 10:22:06 code coverage: enabled
2020/06/07 10:22:06 comparison tracing: enabled
2020/06/07 10:22:06 extra coverage: enabled
2020/06/07 10:22:06 setuid sandbox: enabled
2020/06/07 10:22:06 namespace sandbox: enabled
2020/06/07 10:22:06 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/07 10:22:06 fault injection: enabled
2020/06/07 10:22:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/07 10:22:06 net packet injection: enabled
2020/06/07 10:22:06 net device setup: enabled
2020/06/07 10:22:06 concurrency sanitizer: enabled
2020/06/07 10:22:06 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/07 10:22:06 USB emulation: enabled
syzkaller login: [   58.076087][ T8906] KCSAN: could not find function: '_find_next_bit'
2020/06/07 10:22:10 adding functions to KCSAN blacklist: 'blk_mq_dispatch_rq_list' 'tick_sched_do_timer' 'do_nanosleep' 'file_update_time' 'page_counter_charge' 'echo_char' '_find_next_bit' 'copy_process' 'ep_poll' 'run_timer_softirq' 'wbt_done' '__ext4_new_inode' 'ext4_free_inodes_count' 'dd_has_work' 'tick_nohz_idle_stop_tick' 'atime_needs_update' 'direct_page_fault' 'generic_write_end' 'tick_nohz_next_event' 'futex_wait_queue_me' 'xas_clear_mark' 'blk_mq_get_request' 'find_get_pages_range_tag' '__snd_rawmidi_transmit_ack' 'add_timer' 'generic_fillattr' 
[  143.115299][ T8894] ==================================================================
[  143.124244][ T8894] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[  143.131383][ T8894] 
[  143.133743][ T8894] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1:
[  143.141311][ T8894]  timer_clear_idle+0x3d/0x50
[  143.146212][ T8894]  __tick_nohz_idle_restart_tick+0x32/0x1a0
[  143.152349][ T8894]  tick_nohz_idle_exit+0x19c/0x1d0
[  143.157491][ T8894]  do_idle+0xac/0x290
[  143.161877][ T8894]  cpu_startup_entry+0x14/0x20
[  143.167034][ T8894]  start_secondary+0x169/0x1b0
[  143.171806][ T8894]  secondary_startup_64+0xa4/0xb0
[  143.176810][ T8894] 
[  143.179169][ T8894] read to 0xffff88812c11dca4 of 1 bytes by task 8894 on cpu 0:
[  143.187135][ T8894]  mod_timer+0x631/0x830
[  143.191784][ T8894]  sk_reset_timer+0x29/0xc0
[  143.196484][ T8894]  tcp_rearm_rto+0x1ce/0x280
[  143.201079][ T8894]  tcp_event_new_data_sent+0x23f/0x260
[  143.206535][ T8894]  tcp_write_xmit+0x5c6/0x31e0
[  143.211295][ T8894]  __tcp_push_pending_frames+0x72/0x1b0
[  143.217642][ T8894]  tcp_push+0x1ec/0x3e0
[  143.222515][ T8894]  tcp_sendmsg_locked+0x1de3/0x20f0
[  143.227837][ T8894]  tcp_sendmsg+0x35/0x50
[  143.232461][ T8894]  inet_sendmsg+0x69/0x90
[  143.236914][ T8894]  sock_sendmsg+0x98/0xc0
[  143.241275][ T8894]  sock_write_iter+0x186/0x240
[  143.246205][ T8894]  new_sync_write+0x303/0x400
[  143.250874][ T8894]  __vfs_write+0x9e/0xb0
[  143.255103][ T8894]  vfs_write+0x189/0x380
[  143.259524][ T8894]  ksys_write+0x16a/0x1a0
[  143.264013][ T8894]  __x64_sys_write+0x49/0x60
[  143.269196][ T8894]  do_syscall_64+0xc7/0x3b0
[  143.273928][ T8894]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  143.279804][ T8894] 
[  143.282130][ T8894] Reported by Kernel Concurrency Sanitizer on:
[  143.288796][ T8894] CPU: 0 PID: 8894 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[  143.297430][ T8894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  143.309646][ T8894] ==================================================================
[  143.317955][ T8894] Kernel panic - not syncing: panic_on_warn set ...
[  143.324666][ T8894] CPU: 0 PID: 8894 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[  143.333321][ T8894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  143.343999][ T8894] Call Trace:
[  143.347293][ T8894]  dump_stack+0x11d/0x187
[  143.351791][ T8894]  panic+0x210/0x640
[  143.355685][ T8894]  ? vprintk_func+0x89/0x13a
[  143.360284][ T8894]  kcsan_report.cold+0xc/0x1a
[  143.365107][ T8894]  kcsan_setup_watchpoint+0x3fb/0x440
[  143.370656][ T8894]  mod_timer+0x631/0x830
[  143.375266][ T8894]  sk_reset_timer+0x29/0xc0
[  143.379886][ T8894]  tcp_rearm_rto+0x1ce/0x280
[  143.384719][ T8894]  tcp_event_new_data_sent+0x23f/0x260
[  143.390561][ T8894]  tcp_write_xmit+0x5c6/0x31e0
[  143.395527][ T8894]  ? iov_iter_advance+0x21c/0x900
[  143.400982][ T8894]  __tcp_push_pending_frames+0x72/0x1b0
[  143.406916][ T8894]  tcp_push+0x1ec/0x3e0
[  143.411068][ T8894]  tcp_sendmsg_locked+0x1de3/0x20f0
[  143.416384][ T8894]  ? aa_label_sk_perm.part.0+0x220/0x290
[  143.422278][ T8894]  tcp_sendmsg+0x35/0x50
[  143.427090][ T8894]  inet_sendmsg+0x69/0x90
[  143.431941][ T8894]  ? inet_send_prepare+0x1f0/0x1f0
[  143.437099][ T8894]  sock_sendmsg+0x98/0xc0
[  143.441585][ T8894]  sock_write_iter+0x186/0x240
[  143.446365][ T8894]  new_sync_write+0x303/0x400
[  143.451389][ T8894]  __vfs_write+0x9e/0xb0
[  143.455718][ T8894]  vfs_write+0x189/0x380
[  143.460152][ T8894]  ksys_write+0x16a/0x1a0
[  143.465794][ T8894]  __x64_sys_write+0x49/0x60
[  143.470864][ T8894]  do_syscall_64+0xc7/0x3b0
[  143.475363][ T8894]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  143.481365][ T8894] RIP: 0033:0x4b3cdb
[  143.485383][ T8894] 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
[  143.506016][ T8894] RSP: 002b:000000c00c743540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  143.514463][ T8894] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb
[  143.522957][ T8894] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006
[  143.531028][ T8894] RBP: 000000c00c743590 R08: 000000c00000a201 R09: 0000000000000007
[  143.539150][ T8894] R10: 000000c0000c4000 R11: 0000000000000202 R12: 000000000000011e
[  143.547467][ T8894] R13: 000000c00034c000 R14: 0000000000000007 R15: 00000000000098e4
[  144.633251][ T8894] Shutting down cpus with NMI
[  144.639553][ T8894] Kernel Offset: disabled
[  144.643889][ T8894] Rebooting in 86400 seconds..