Warning: Permanently added '10.128.0.103' (ECDSA) to the list of known hosts. 2019/10/25 23:45:02 fuzzer started 2019/10/25 23:45:04 dialing manager at 10.128.0.105:32811 2019/10/25 23:45:04 syscalls: 2533 2019/10/25 23:45:04 code coverage: enabled 2019/10/25 23:45:04 comparison tracing: enabled 2019/10/25 23:45:04 extra coverage: extra coverage is not supported by the kernel 2019/10/25 23:45:04 setuid sandbox: enabled 2019/10/25 23:45:04 namespace sandbox: enabled 2019/10/25 23:45:04 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/25 23:45:04 fault injection: enabled 2019/10/25 23:45:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/25 23:45:04 net packet injection: enabled 2019/10/25 23:45:04 net device setup: enabled 2019/10/25 23:45:04 concurrency sanitizer: enabled 2019/10/25 23:45:07 adding functions to KCSAN blacklist: '__hrtimer_run_queues' 'ktime_get_real_seconds' 'ext4_free_inode' 'pid_update_inode' 'common_perm_cond' 'tcp_add_backlog' 'mod_timer' 'blk_mq_get_request' 'run_timer_softirq' '__tcp_select_window' 'generic_permission' 'tick_do_update_jiffies64' 'tomoyo_supervisor' 'echo_char' 'blk_mq_sched_dispatch_requests' syzkaller login: [ 52.516025][ T7177] ================================================================== [ 52.524262][ T7177] BUG: KCSAN: data-race in schedule_hrtimeout_range_clock / watchdog [ 52.532311][ T7177] [ 52.534653][ T7177] read to 0xffff88812a8ec010 of 8 bytes by task 1061 on cpu 0: [ 52.542207][ T7177] watchdog+0x2c3/0x7c0 [ 52.546341][ T7177] kthread+0x1d4/0x200 [ 52.550389][ T7177] ret_from_fork+0x1f/0x30 [ 52.554804][ T7177] [ 52.557116][ T7177] write to 0xffff88812a8ec010 of 8 bytes by task 7177 on cpu 1: [ 52.564738][ T7177] schedule_hrtimeout_range_clock+0x14e/0x1e0 [ 52.570785][ T7177] schedule_hrtimeout_range+0x34/0x50 [ 52.576135][ T7177] poll_schedule_timeout.constprop.0+0x75/0xc0 [ 52.582264][ T7177] do_select+0xd7f/0x1020 [ 52.586585][ T7177] core_sys_select+0x381/0x550 [ 52.591325][ T7177] do_pselect.constprop.0+0x11d/0x160 [ 52.596771][ T7177] __x64_sys_pselect6+0x12e/0x170 [ 52.601774][ T7177] do_syscall_64+0xcc/0x370 [ 52.606252][ T7177] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.612113][ T7177] [ 52.614414][ T7177] Reported by Kernel Concurrency Sanitizer on: [ 52.620546][ T7177] CPU: 1 PID: 7177 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 52.627985][ T7177] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.638014][ T7177] ================================================================== [ 52.646048][ T7177] Kernel panic - not syncing: panic_on_warn set ... [ 52.652613][ T7177] CPU: 1 PID: 7177 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 52.660064][ T7177] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.670103][ T7177] Call Trace: [ 52.673375][ T7177] dump_stack+0xf5/0x159 [ 52.677618][ T7177] panic+0x210/0x640 [ 52.681511][ T7177] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.687555][ T7177] ? vprintk_func+0x8d/0x140 [ 52.692124][ T7177] kcsan_report.cold+0xc/0x10 [ 52.696778][ T7177] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 52.702333][ T7177] __tsan_write8+0x32/0x40 [ 52.706740][ T7177] schedule_hrtimeout_range_clock+0x14e/0x1e0 [ 52.712782][ T7177] ? hrtimer_active+0x1a0/0x1a0 [ 52.717625][ T7177] schedule_hrtimeout_range+0x34/0x50 [ 52.722974][ T7177] poll_schedule_timeout.constprop.0+0x75/0xc0 [ 52.729117][ T7177] do_select+0xd7f/0x1020 [ 52.733576][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.739188][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.744806][ T7177] ? __tsan_read1+0x2c/0x30 [ 52.749287][ T7177] ? pvclock_clocksource_read+0x178/0x1e0 [ 52.755001][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.760618][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.766225][ T7177] ? __tsan_write4+0x32/0x40 [ 52.770806][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.776426][ T7177] ? __tsan_read8+0x2c/0x30 [ 52.780908][ T7177] ? __tsan_read8+0x2c/0x30 [ 52.785392][ T7177] ? tcp_poll+0x334/0x6b0 [ 52.789701][ T7177] ? tcp_alloc_md5sig_pool+0x320/0x320 [ 52.795152][ T7177] ? sock_poll+0xfe/0x250 [ 52.799471][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.805097][ T7177] ? __tsan_write4+0x32/0x40 [ 52.809673][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.815284][ T7177] ? __rcu_read_unlock+0x66/0x3c0 [ 52.820285][ T7177] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 52.826170][ T7177] core_sys_select+0x381/0x550 [ 52.830934][ T7177] ? ep_scan_ready_list.constprop.0+0x47f/0x500 [ 52.837151][ T7177] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 52.842762][ T7177] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 52.848641][ T7177] ? __tsan_write8+0x32/0x40 [ 52.853209][ T7177] ? ktime_get_ts64+0x286/0x2c0 [ 52.858038][ T7177] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 52.863736][ T7177] ? timespec64_add_safe+0xae/0xd0 [ 52.868827][ T7177] do_pselect.constprop.0+0x11d/0x160 [ 52.874180][ T7177] __x64_sys_pselect6+0x12e/0x170 [ 52.879186][ T7177] do_syscall_64+0xcc/0x370 [ 52.883668][ T7177] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.889535][ T7177] RIP: 0033:0x45ac23 [ 52.893410][ T7177] Code: 48 89 44 24 08 bf 00 00 00 00 be 00 00 00 00 ba 00 00 00 00 41 ba 00 00 00 00 49 89 e0 41 b9 00 00 00 00 b8 0e 01 00 00 0f 05 <48> 8b 6c 24 10 48 83 c4 18 c3 cc cc cc b8 ba 00 00 00 0f 05 89 44 [ 52.912991][ T7177] RSP: 002b:000000c4202cfe38 EFLAGS: 00000206 ORIG_RAX: 000000000000010e [ 52.921377][ T7177] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045ac23 [ 52.929324][ T7177] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 52.937273][ T7177] RBP: 000000c4202cfe48 R08: 000000c4202cfe38 R09: 0000000000000000 [ 52.945233][ T7177] R10: 0000000000000000 R11: 0000000000000206 R12: 000000c420904000 [ 52.953442][ T7177] R13: 00000000000000da R14: 0000000000000000 R15: 0000000000000000 [ 52.962663][ T7177] Kernel Offset: disabled [ 52.966979][ T7177] Rebooting in 86400 seconds..