Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. 2020/07/22 01:58:15 fuzzer started 2020/07/22 01:58:15 dialing manager at 10.128.0.105:41275 2020/07/22 01:58:15 syscalls: 3214 2020/07/22 01:58:15 code coverage: enabled 2020/07/22 01:58:15 comparison tracing: enabled 2020/07/22 01:58:15 extra coverage: enabled 2020/07/22 01:58:15 setuid sandbox: enabled 2020/07/22 01:58:15 namespace sandbox: enabled 2020/07/22 01:58:15 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/22 01:58:15 fault injection: enabled 2020/07/22 01:58:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/22 01:58:15 net packet injection: enabled 2020/07/22 01:58:15 net device setup: enabled 2020/07/22 01:58:15 concurrency sanitizer: enabled 2020/07/22 01:58:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/22 01:58:15 USB emulation: enabled 2020/07/22 01:58:16 suppressing KCSAN reports in functions: 'ext4_free_inode' '__ext4_new_inode' 'ext4_mark_iloc_dirty' 'blk_mq_sched_dispatch_requests' 'n_tty_receive_buf_common' 'find_get_pages_range_tag' 'complete_signal' '__xa_clear_mark' 'generic_write_end' [ 33.200871][ T8649] ================================================================== [ 33.209001][ T8649] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback [ 33.216258][ T8649] [ 33.218575][ T8649] write to 0xffff88812484e710 of 8 bytes by interrupt on cpu 1: [ 33.226184][ T8649] ep_poll_callback+0x29c/0x510 [ 33.231017][ T8649] __wake_up_common+0xbc/0x130 [ 33.235757][ T8649] __wake_up_sync_key+0x83/0xc0 [ 33.240581][ T8649] sock_def_readable+0x61/0xe0 [ 33.245314][ T8649] tcp_rcv_established+0x13c0/0x1520 [ 33.250570][ T8649] tcp_v4_do_rcv+0x25e/0x480 [ 33.255133][ T8649] tcp_v4_rcv+0x219b/0x2420 [ 33.259626][ T8649] ip_protocol_deliver_rcu+0x1f9/0x400 [ 33.265053][ T8649] ip_local_deliver+0x1d6/0x2a0 [ 33.269889][ T8649] ip_sublist_rcv+0x4d4/0x5a0 [ 33.274553][ T8649] ip_list_rcv+0x262/0x290 [ 33.278943][ T8649] __netif_receive_skb_list_core+0x34b/0x450 [ 33.284894][ T8649] __netif_receive_skb_list+0x298/0x310 [ 33.290433][ T8649] netif_receive_skb_list_internal+0xda/0x330 [ 33.296474][ T8649] napi_gro_receive+0x329/0x5a0 [ 33.301292][ T8649] receive_buf+0x7a4/0xcf0 [ 33.305678][ T8649] virtnet_poll+0x2fa/0x780 [ 33.310153][ T8649] napi_poll+0x178/0x4a0 [ 33.314366][ T8649] net_rx_action+0x1ba/0x530 [ 33.318928][ T8649] __do_softirq+0x198/0x360 [ 33.323403][ T8649] run_ksoftirqd+0x2f/0x60 [ 33.327802][ T8649] smpboot_thread_fn+0x347/0x530 [ 33.332726][ T8649] kthread+0x20d/0x230 [ 33.336771][ T8649] ret_from_fork+0x1f/0x30 [ 33.341156][ T8649] [ 33.343486][ T8649] read to 0xffff88812484e710 of 8 bytes by task 8649 on cpu 0: [ 33.351025][ T8649] do_epoll_wait+0x2e2/0x870 [ 33.355593][ T8649] __x64_sys_epoll_pwait+0x92/0x150 [ 33.360763][ T8649] do_syscall_64+0x51/0xb0 [ 33.365152][ T8649] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.371012][ T8649] [ 33.373313][ T8649] Reported by Kernel Concurrency Sanitizer on: [ 33.379440][ T8649] CPU: 0 PID: 8649 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0 [ 33.387645][ T8649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.397675][ T8649] ================================================================== [ 33.405715][ T8649] Kernel panic - not syncing: panic_on_warn set ... [ 33.412277][ T8649] CPU: 0 PID: 8649 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0 [ 33.420482][ T8649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.430509][ T8649] Call Trace: [ 33.433790][ T8649] dump_stack+0x10f/0x19d [ 33.438120][ T8649] panic+0x207/0x64a [ 33.441992][ T8649] ? vprintk_emit+0x44a/0x4f0 [ 33.446643][ T8649] kcsan_report+0x684/0x690 [ 33.451138][ T8649] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 33.456662][ T8649] ? do_epoll_wait+0x2e2/0x870 [ 33.461400][ T8649] ? __x64_sys_epoll_pwait+0x92/0x150 [ 33.466760][ T8649] ? do_syscall_64+0x51/0xb0 [ 33.471327][ T8649] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.477373][ T8649] ? ep_send_events_proc+0x4fd/0x620 [ 33.482634][ T8649] kcsan_setup_watchpoint+0x453/0x4d0 [ 33.487979][ T8649] do_epoll_wait+0x2e2/0x870 [ 33.492546][ T8649] ? debug_smp_processor_id+0x18/0x20 [ 33.497905][ T8649] __x64_sys_epoll_pwait+0x92/0x150 [ 33.503073][ T8649] do_syscall_64+0x51/0xb0 [ 33.507467][ T8649] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.513328][ T8649] RIP: 0033:0x469240 [ 33.517191][ T8649] Code: Bad RIP value. [ 33.521224][ T8649] RSP: 002b:000000c0000497f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 33.529621][ T8649] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000469240 [ 33.537564][ T8649] RDX: 0000000000000080 RSI: 000000c000049840 RDI: 0000000000000003 [ 33.545508][ T8649] RBP: 000000c000049e40 R08: 0000000000000000 R09: 00007ffee8ba6080 [ 33.553451][ T8649] R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000003 [ 33.561395][ T8649] R13: 000000c000000f00 R14: 0000004d92eb930d R15: 0000000000000004 [ 33.570415][ T8649] Kernel Offset: disabled [ 33.574719][ T8649] Rebooting in 86400 seconds..