Warning: Permanently added '10.128.0.240' (ECDSA) to the list of known hosts.
2020/07/30 22:20:10 fuzzer started
2020/07/30 22:20:10 dialing manager at 10.128.0.105:45459
2020/07/30 22:20:11 syscalls: 3254
2020/07/30 22:20:11 code coverage: enabled
2020/07/30 22:20:11 comparison tracing: enabled
2020/07/30 22:20:11 extra coverage: enabled
2020/07/30 22:20:11 setuid sandbox: enabled
2020/07/30 22:20:11 namespace sandbox: enabled
2020/07/30 22:20:11 Android sandbox: /sys/fs/selinux/policy does not exist
2020/07/30 22:20:11 fault injection: enabled
2020/07/30 22:20:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/07/30 22:20:11 net packet injection: enabled
2020/07/30 22:20:11 net device setup: enabled
2020/07/30 22:20:11 concurrency sanitizer: enabled
2020/07/30 22:20:11 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/07/30 22:20:11 USB emulation: enabled
2020/07/30 22:20:11 hci packet injection: enabled
2020/07/30 22:20:12 suppressing KCSAN reports in functions: 'ext4_mb_regular_allocator' 'do_nanosleep' 'do_epoll_wait' 'find_get_pages_range_tag' 'do_signal_stop' 'blk_mq_dispatch_rq_list' 'n_tty_receive_buf_common' '__xa_clear_mark' 'pcpu_alloc' '__ext4_new_inode' 'blk_mq_rq_ctx_init' 'blk_mq_sched_dispatch_requests' 'alloc_pid' 'ext4_free_inode' 'io_sq_thread' 
syzkaller login: [   36.502846][ T8644] ==================================================================
[   36.510934][ T8644] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle
[   36.518093][ T8644] 
[   36.520393][ T8644] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0:
[   36.527727][ T8644]  timer_clear_idle+0x2e/0x40
[   36.532372][ T8644]  tick_nohz_idle_retain_tick+0x3e/0x40
[   36.537886][ T8644]  do_idle+0x287/0x310
[   36.541920][ T8644]  cpu_startup_entry+0x15/0x20
[   36.546651][ T8644]  rest_init+0xd8/0xe0
[   36.550686][ T8644]  arch_call_rest_init+0xa/0xb
[   36.555414][ T8644]  start_kernel+0x608/0x6d0
[   36.559883][ T8644]  secondary_startup_64+0xa4/0xb0
[   36.564867][ T8644] 
[   36.567166][ T8644] read to 0xffff88812c01cb24 of 1 bytes by task 8644 on cpu 1:
[   36.574673][ T8644]  __mod_timer+0xbd7/0x1020
[   36.579140][ T8644]  mod_timer+0x1b/0x20
[   36.583176][ T8644]  sk_reset_timer+0x1f/0xa0
[   36.587643][ T8644]  tcp_rearm_rto+0x204/0x210
[   36.592198][ T8644]  tcp_write_xmit+0x1bee/0x3f40
[   36.597016][ T8644]  __tcp_push_pending_frames+0x68/0x1c0
[   36.602529][ T8644]  tcp_push+0x2da/0x2f0
[   36.606662][ T8644]  tcp_sendmsg_locked+0x1bf9/0x2200
[   36.611830][ T8644]  tcp_sendmsg+0x2c/0x40
[   36.616041][ T8644]  inet_sendmsg+0x5f/0x80
[   36.620341][ T8644]  sock_write_iter+0x1a1/0x200
[   36.625076][ T8644]  vfs_write+0x607/0x690
[   36.629289][ T8644]  ksys_write+0xce/0x180
[   36.633501][ T8644]  __x64_sys_write+0x3e/0x50
[   36.638060][ T8644]  do_syscall_64+0x51/0xb0
[   36.642446][ T8644]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   36.648306][ T8644] 
[   36.650635][ T8644] Reported by Kernel Concurrency Sanitizer on:
[   36.656762][ T8644] CPU: 1 PID: 8644 Comm: syz-fuzzer Not tainted 5.8.0-rc7-syzkaller #0
[   36.664959][ T8644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.675015][ T8644] ==================================================================
[   36.683040][ T8644] Kernel panic - not syncing: panic_on_warn set ...
[   36.689591][ T8644] CPU: 1 PID: 8644 Comm: syz-fuzzer Not tainted 5.8.0-rc7-syzkaller #0
[   36.697791][ T8644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.707813][ T8644] Call Trace:
[   36.711071][ T8644]  dump_stack+0x10f/0x19d
[   36.715369][ T8644]  panic+0x207/0x64a
[   36.719237][ T8644]  ? vprintk_emit+0x44a/0x4f0
[   36.723899][ T8644]  kcsan_report+0x684/0x690
[   36.728370][ T8644]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   36.733884][ T8644]  ? __mod_timer+0xbd7/0x1020
[   36.738878][ T8644]  ? mod_timer+0x1b/0x20
[   36.743101][ T8644]  ? sk_reset_timer+0x1f/0xa0
[   36.747951][ T8644]  ? tcp_rearm_rto+0x204/0x210
[   36.752691][ T8644]  ? tcp_write_xmit+0x1bee/0x3f40
[   36.757688][ T8644]  ? __tcp_push_pending_frames+0x68/0x1c0
[   36.763376][ T8644]  ? tcp_push+0x2da/0x2f0
[   36.767675][ T8644]  ? tcp_sendmsg_locked+0x1bf9/0x2200
[   36.773026][ T8644]  ? tcp_sendmsg+0x2c/0x40
[   36.777412][ T8644]  ? inet_sendmsg+0x5f/0x80
[   36.781887][ T8644]  ? sock_write_iter+0x1a1/0x200
[   36.786793][ T8644]  ? vfs_write+0x607/0x690
[   36.791178][ T8644]  ? ksys_write+0xce/0x180
[   36.795561][ T8644]  ? __x64_sys_write+0x3e/0x50
[   36.800290][ T8644]  ? do_syscall_64+0x51/0xb0
[   36.804848][ T8644]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   36.811392][ T8644]  ? snd_nativeinstruments_control_put+0xa4/0x170
[   36.817781][ T8644]  kcsan_setup_watchpoint+0x453/0x4d0
[   36.823163][ T8644]  __mod_timer+0xbd7/0x1020
[   36.827648][ T8644]  mod_timer+0x1b/0x20
[   36.831690][ T8644]  sk_reset_timer+0x1f/0xa0
[   36.836160][ T8644]  tcp_rearm_rto+0x204/0x210
[   36.840769][ T8644]  tcp_write_xmit+0x1bee/0x3f40
[   36.845619][ T8644]  ? check_preemption_disabled+0x51/0x140
[   36.851311][ T8644]  ? iov_iter_advance+0x1e0/0x890
[   36.856307][ T8644]  ? _copy_from_iter_full+0x1d9/0x6d0
[   36.861647][ T8644]  __tcp_push_pending_frames+0x68/0x1c0
[   36.867160][ T8644]  tcp_push+0x2da/0x2f0
[   36.871333][ T8644]  tcp_sendmsg_locked+0x1bf9/0x2200
[   36.876512][ T8644]  tcp_sendmsg+0x2c/0x40
[   36.880724][ T8644]  inet_sendmsg+0x5f/0x80
[   36.885020][ T8644]  sock_write_iter+0x1a1/0x200
[   36.889753][ T8644]  vfs_write+0x607/0x690
[   36.893967][ T8644]  ksys_write+0xce/0x180
[   36.898207][ T8644]  __x64_sys_write+0x3e/0x50
[   36.902784][ T8644]  do_syscall_64+0x51/0xb0
[   36.907227][ T8644]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   36.920652][ T8644] RIP: 0033:0x4b3cdb
[   36.924521][ T8644] 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
[   36.944094][ T8644] RSP: 002b:000000c001819540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   36.952527][ T8644] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3cdb
[   36.960546][ T8644] RDX: 0000000000000008 RSI: 000000c00000a200 RDI: 0000000000000006
[   36.968543][ T8644] RBP: 000000c001819590 R08: 000000c00000a201 R09: 0000000000000008
[   36.976489][ T8644] R10: 000000c000094000 R11: 0000000000000202 R12: 000000000000011e
[   36.984433][ T8644] R13: 000000c000346000 R14: 0000000000000007 R15: 0000000000001793
[   38.109030][ T8644] Shutting down cpus with NMI
[   38.114842][ T8644] Kernel Offset: disabled
[   38.119189][ T8644] Rebooting in 86400 seconds..