Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts.
2020/06/11 16:26:49 fuzzer started
2020/06/11 16:26:49 dialing manager at 10.128.0.105:39743
2020/06/11 16:26:49 syscalls: 3078
2020/06/11 16:26:49 code coverage: enabled
2020/06/11 16:26:49 comparison tracing: enabled
2020/06/11 16:26:49 extra coverage: enabled
2020/06/11 16:26:49 setuid sandbox: enabled
2020/06/11 16:26:49 namespace sandbox: enabled
2020/06/11 16:26:49 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/11 16:26:49 fault injection: enabled
2020/06/11 16:26:49 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/11 16:26:49 net packet injection: enabled
2020/06/11 16:26:49 net device setup: enabled
2020/06/11 16:26:49 concurrency sanitizer: enabled
2020/06/11 16:26:49 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/11 16:26:49 USB emulation: enabled
2020/06/11 16:26:51 adding functions to KCSAN blacklist: 'blk_mq_get_request' 'generic_fillattr' 'do_nanosleep' 'copy_process' 'run_timer_softirq' 'ep_poll' 'generic_write_end' '__ext4_new_inode' 'find_get_pages_range_tag' 'xas_clear_mark' 'do_syslog' 
syzkaller login: [   59.127199][ T8904] ==================================================================
[   59.135299][ T8904] BUG: KCSAN: data-race in mod_timer / timer_clear_idle
[   59.142198][ T8904] 
[   59.144503][ T8904] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1:
[   59.151886][ T8904]  timer_clear_idle+0x3d/0x50
[   59.156537][ T8904]  __tick_nohz_idle_restart_tick+0x32/0x1a0
[   59.162408][ T8904]  tick_nohz_idle_exit+0x19c/0x1d0
[   59.167495][ T8904]  do_idle+0xac/0x290
[   59.171449][ T8904]  cpu_startup_entry+0x14/0x20
[   59.176199][ T8904]  start_secondary+0x169/0x1b0
[   59.180986][ T8904]  secondary_startup_64+0xa4/0xb0
[   59.185980][ T8904] 
[   59.188311][ T8904] read to 0xffff88812c11dca4 of 1 bytes by task 8904 on cpu 0:
[   59.195841][ T8904]  mod_timer+0x631/0x830
[   59.200061][ T8904]  sk_reset_timer+0x29/0xc0
[   59.204539][ T8904]  tcp_rearm_rto+0x1ce/0x280
[   59.209141][ T8904]  tcp_event_new_data_sent+0x23f/0x260
[   59.214576][ T8904]  tcp_write_xmit+0x5c6/0x31e0
[   59.219364][ T8904]  __tcp_push_pending_frames+0x72/0x1b0
[   59.224884][ T8904]  tcp_push+0x1ec/0x3e0
[   59.229049][ T8904]  tcp_sendmsg_locked+0x1de3/0x20f0
[   59.234234][ T8904]  tcp_sendmsg+0x35/0x50
[   59.238470][ T8904]  inet_sendmsg+0x69/0x90
[   59.242789][ T8904]  sock_sendmsg+0x98/0xc0
[   59.247108][ T8904]  sock_write_iter+0x186/0x240
[   59.251850][ T8904]  new_sync_write+0x303/0x400
[   59.256503][ T8904]  __vfs_write+0x9e/0xb0
[   59.260731][ T8904]  vfs_write+0x189/0x380
[   59.264948][ T8904]  ksys_write+0x16a/0x1a0
[   59.269249][ T8904]  __x64_sys_write+0x49/0x60
[   59.273835][ T8904]  do_syscall_64+0xc7/0x3b0
[   59.278312][ T8904]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   59.284175][ T8904] 
[   59.286490][ T8904] Reported by Kernel Concurrency Sanitizer on:
[   59.292620][ T8904] CPU: 0 PID: 8904 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   59.300842][ T8904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.310868][ T8904] ==================================================================
[   59.318899][ T8904] Kernel panic - not syncing: panic_on_warn set ...
[   59.325462][ T8904] CPU: 0 PID: 8904 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   59.333667][ T8904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.343694][ T8904] Call Trace:
[   59.346974][ T8904]  dump_stack+0x11d/0x187
[   59.351281][ T8904]  panic+0x210/0x640
[   59.355164][ T8904]  ? vprintk_func+0x89/0x13a
[   59.359744][ T8904]  kcsan_report.cold+0xc/0x1a
[   59.364402][ T8904]  kcsan_setup_watchpoint+0x3fb/0x440
[   59.369938][ T8904]  mod_timer+0x631/0x830
[   59.374160][ T8904]  sk_reset_timer+0x29/0xc0
[   59.378640][ T8904]  tcp_rearm_rto+0x1ce/0x280
[   59.383209][ T8904]  tcp_event_new_data_sent+0x23f/0x260
[   59.388669][ T8904]  tcp_write_xmit+0x5c6/0x31e0
[   59.393416][ T8904]  ? iov_iter_advance+0x21c/0x900
[   59.398421][ T8904]  __tcp_push_pending_frames+0x72/0x1b0
[   59.403957][ T8904]  tcp_push+0x1ec/0x3e0
[   59.408090][ T8904]  tcp_sendmsg_locked+0x1de3/0x20f0
[   59.413270][ T8904]  ? aa_label_sk_perm.part.0+0x220/0x290
[   59.418883][ T8904]  tcp_sendmsg+0x35/0x50
[   59.423117][ T8904]  inet_sendmsg+0x69/0x90
[   59.427422][ T8904]  ? inet_send_prepare+0x1f0/0x1f0
[   59.432508][ T8904]  sock_sendmsg+0x98/0xc0
[   59.436812][ T8904]  sock_write_iter+0x186/0x240
[   59.441558][ T8904]  new_sync_write+0x303/0x400
[   59.446221][ T8904]  __vfs_write+0x9e/0xb0
[   59.450450][ T8904]  vfs_write+0x189/0x380
[   59.454683][ T8904]  ksys_write+0x16a/0x1a0
[   59.459006][ T8904]  __x64_sys_write+0x49/0x60
[   59.463590][ T8904]  do_syscall_64+0xc7/0x3b0
[   59.468073][ T8904]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   59.473938][ T8904] RIP: 0033:0x4b3cdb
[   59.477813][ T8904] 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
[   59.497395][ T8904] RSP: 002b:000000c000239540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   59.505781][ T8904] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3cdb
[   59.513726][ T8904] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006
[   59.521689][ T8904] RBP: 000000c000239590 R08: 000000c00000a201 R09: 0000000000000007
[   59.529647][ T8904] R10: 000000c000114000 R11: 0000000000000202 R12: 000000000000011e
[   59.537607][ T8904] R13: 000000c0004a0000 R14: 0000000000000007 R15: 0000000000000820
[   60.622120][ T8904] Shutting down cpus with NMI
[   60.627890][ T8904] Kernel Offset: disabled
[   60.632203][ T8904] Rebooting in 86400 seconds..