Warning: Permanently added '10.128.0.205' (ECDSA) to the list of known hosts.
2020/06/30 22:18:22 fuzzer started
2020/06/30 22:18:22 dialing manager at 10.128.0.105:33683
2020/06/30 22:18:22 syscalls: 3106
2020/06/30 22:18:22 code coverage: enabled
2020/06/30 22:18:22 comparison tracing: enabled
2020/06/30 22:18:22 extra coverage: enabled
2020/06/30 22:18:22 setuid sandbox: enabled
2020/06/30 22:18:22 namespace sandbox: enabled
2020/06/30 22:18:22 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/30 22:18:22 fault injection: enabled
2020/06/30 22:18:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/30 22:18:22 net packet injection: enabled
2020/06/30 22:18:22 net device setup: enabled
2020/06/30 22:18:22 concurrency sanitizer: enabled
2020/06/30 22:18:22 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/30 22:18:22 USB emulation: enabled
2020/06/30 22:18:23 suppressing KCSAN reports in functions: 'copy_process' 'ext4_mb_regular_allocator' 'find_get_pages_range_tag' 'ext4_free_inodes_count' '__ext4_new_inode' 'do_epoll_wait' 'generic_write_end' 'blk_mq_dispatch_rq_list' 
syzkaller login: [   34.550416][ T8654] ==================================================================
[   34.558629][ T8654] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle
[   34.566337][ T8654] 
[   34.568641][ T8654] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0:
[   34.576000][ T8654]  timer_clear_idle+0x2e/0x40
[   34.580672][ T8654]  tick_nohz_idle_retain_tick+0x3e/0x40
[   34.587156][ T8654]  do_idle+0x287/0x310
[   34.591337][ T8654]  cpu_startup_entry+0x15/0x20
[   34.596079][ T8654]  rest_init+0xd8/0xe0
[   34.600120][ T8654]  arch_call_rest_init+0xa/0xb
[   34.604867][ T8654]  start_kernel+0x608/0x6d0
[   34.609346][ T8654]  secondary_startup_64+0xa4/0xb0
[   34.614332][ T8654] 
[   34.616646][ T8654] read to 0xffff88812c01cb24 of 1 bytes by task 8654 on cpu 1:
[   34.624443][ T8654]  __mod_timer+0xb87/0xf00
[   34.628826][ T8654]  mod_timer+0x1b/0x20
[   34.632861][ T8654]  sk_reset_timer+0x1f/0xa0
[   34.637332][ T8654]  tcp_rearm_rto+0x204/0x210
[   34.642507][ T8654]  tcp_write_xmit+0x1bee/0x3f40
[   34.647463][ T8654]  __tcp_push_pending_frames+0x68/0x1c0
[   34.652979][ T8654]  tcp_push+0x2da/0x2f0
[   34.657117][ T8654]  tcp_sendmsg_locked+0x1bf9/0x2200
[   34.662286][ T8654]  tcp_sendmsg+0x2c/0x40
[   34.666506][ T8654]  inet_sendmsg+0x5f/0x80
[   34.670808][ T8654]  sock_write_iter+0x1a1/0x200
[   34.675541][ T8654]  __vfs_write+0x2d8/0x340
[   34.680010][ T8654]  vfs_write+0x19b/0x350
[   34.684228][ T8654]  ksys_write+0xce/0x180
[   34.688523][ T8654]  __x64_sys_write+0x3e/0x50
[   34.693101][ T8654]  do_syscall_64+0x51/0xb0
[   34.697505][ T8654]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   34.703365][ T8654] 
[   34.705763][ T8654] Reported by Kernel Concurrency Sanitizer on:
[   34.712516][ T8654] CPU: 1 PID: 8654 Comm: syz-fuzzer Not tainted 5.8.0-rc3-syzkaller #0
[   34.720828][ T8654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.730858][ T8654] ==================================================================
[   34.739840][ T8654] Kernel panic - not syncing: panic_on_warn set ...
[   34.746396][ T8654] CPU: 1 PID: 8654 Comm: syz-fuzzer Not tainted 5.8.0-rc3-syzkaller #0
[   34.754597][ T8654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.764617][ T8654] Call Trace:
[   34.767892][ T8654]  dump_stack+0x10f/0x19d
[   34.772224][ T8654]  panic+0x207/0x64a
[   34.776090][ T8654]  ? vprintk_emit+0x44a/0x4f0
[   34.780739][ T8654]  kcsan_report+0x684/0x690
[   34.785214][ T8654]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   34.790727][ T8654]  ? __mod_timer+0xb87/0xf00
[   34.795299][ T8654]  ? mod_timer+0x1b/0x20
[   34.799512][ T8654]  ? sk_reset_timer+0x1f/0xa0
[   34.804160][ T8654]  ? tcp_rearm_rto+0x204/0x210
[   34.809597][ T8654]  ? tcp_write_xmit+0x1bee/0x3f40
[   34.814761][ T8654]  ? __tcp_push_pending_frames+0x68/0x1c0
[   34.820709][ T8654]  ? tcp_push+0x2da/0x2f0
[   34.825875][ T8654]  ? tcp_sendmsg_locked+0x1bf9/0x2200
[   34.831217][ T8654]  ? tcp_sendmsg+0x2c/0x40
[   34.835712][ T8654]  ? inet_sendmsg+0x5f/0x80
[   34.840454][ T8654]  ? sock_write_iter+0x1a1/0x200
[   34.846092][ T8654]  ? __vfs_write+0x2d8/0x340
[   34.850776][ T8654]  ? vfs_write+0x19b/0x350
[   34.855162][ T8654]  ? ksys_write+0xce/0x180
[   34.859673][ T8654]  ? __x64_sys_write+0x3e/0x50
[   34.864439][ T8654]  ? do_syscall_64+0x51/0xb0
[   34.869005][ T8654]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   34.875054][ T8654]  ? __ip_queue_xmit+0x9ba/0x9e0
[   34.880066][ T8654]  ? __copy_skb_header+0x228/0x270
[   34.885151][ T8654]  kcsan_setup_watchpoint+0x453/0x4d0
[   34.890492][ T8654]  __mod_timer+0xb87/0xf00
[   34.894877][ T8654]  mod_timer+0x1b/0x20
[   34.898913][ T8654]  sk_reset_timer+0x1f/0xa0
[   34.903382][ T8654]  tcp_rearm_rto+0x204/0x210
[   34.907944][ T8654]  tcp_write_xmit+0x1bee/0x3f40
[   34.912769][ T8654]  ? find_next_bit+0xa7/0xf0
[   34.917342][ T8654]  ? check_preemption_disabled+0x51/0x140
[   34.923027][ T8654]  ? iov_iter_advance+0x1e0/0x890
[   34.928636][ T8654]  ? _copy_from_iter_full+0x1d9/0x6d0
[   34.933974][ T8654]  __tcp_push_pending_frames+0x68/0x1c0
[   34.939523][ T8654]  tcp_push+0x2da/0x2f0
[   34.943758][ T8654]  tcp_sendmsg_locked+0x1bf9/0x2200
[   34.949798][ T8654]  tcp_sendmsg+0x2c/0x40
[   34.954022][ T8654]  inet_sendmsg+0x5f/0x80
[   34.958321][ T8654]  sock_write_iter+0x1a1/0x200
[   34.963051][ T8654]  __vfs_write+0x2d8/0x340
[   34.967457][ T8654]  vfs_write+0x19b/0x350
[   34.971681][ T8654]  ksys_write+0xce/0x180
[   34.975892][ T8654]  __x64_sys_write+0x3e/0x50
[   34.980449][ T8654]  do_syscall_64+0x51/0xb0
[   34.984842][ T8654]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   34.990711][ T8654] RIP: 0033:0x4b3cdb
[   34.994579][ T8654] Code: Bad RIP value.
[   34.998612][ T8654] RSP: 002b:000000c000077540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   35.007101][ T8654] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3cdb
[   35.015159][ T8654] RDX: 0000000000000008 RSI: 000000c00000a200 RDI: 0000000000000006
[   35.023127][ T8654] RBP: 000000c000077590 R08: 000000c00000a201 R09: 0000000000000008
[   35.031084][ T8654] R10: 000000c0000c4000 R11: 0000000000000202 R12: 000000000000011e
[   35.039027][ T8654] R13: 000000c0004b2000 R14: 0000000000000007 R15: 00000000000020db
[   36.161736][ T8654] Shutting down cpus with NMI
[   36.168122][ T8654] Kernel Offset: disabled
[   36.172446][ T8654] Rebooting in 86400 seconds..