Warning: Permanently added '10.128.1.22' (ECDSA) to the list of known hosts. 2020/07/18 18:59:47 fuzzer started 2020/07/18 18:59:47 dialing manager at 10.128.0.105:42823 2020/07/18 18:59:47 syscalls: 3189 2020/07/18 18:59:47 code coverage: enabled 2020/07/18 18:59:47 comparison tracing: enabled 2020/07/18 18:59:47 extra coverage: enabled 2020/07/18 18:59:47 setuid sandbox: enabled 2020/07/18 18:59:47 namespace sandbox: enabled 2020/07/18 18:59:47 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/18 18:59:47 fault injection: enabled 2020/07/18 18:59:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/18 18:59:47 net packet injection: enabled 2020/07/18 18:59:47 net device setup: enabled 2020/07/18 18:59:47 concurrency sanitizer: enabled 2020/07/18 18:59:47 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/18 18:59:47 USB emulation: enabled 2020/07/18 18:59:48 suppressing KCSAN reports in functions: 'dnotify_flush' 'blk_mq_dispatch_rq_list' 'ext4_free_inode' '__xa_clear_mark' 'generic_write_end' 'do_nanosleep' syzkaller login: [ 33.188635][ T8663] ================================================================== [ 33.196770][ T8663] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback [ 33.204021][ T8663] [ 33.206335][ T8663] write to 0xffff88812151aad0 of 8 bytes by interrupt on cpu 1: [ 33.213952][ T8663] ep_poll_callback+0x29c/0x510 [ 33.218788][ T8663] __wake_up_common+0xbc/0x130 [ 33.223536][ T8663] __wake_up_sync_key+0x83/0xc0 [ 33.228555][ T8663] sock_def_readable+0x61/0xe0 [ 33.233300][ T8663] tcp_rcv_established+0x13c0/0x1520 [ 33.238568][ T8663] tcp_v4_do_rcv+0x25e/0x480 [ 33.243170][ T8663] tcp_v4_rcv+0x219b/0x2420 [ 33.247655][ T8663] ip_protocol_deliver_rcu+0x1f9/0x400 [ 33.253098][ T8663] ip_local_deliver+0x1d6/0x2a0 [ 33.257929][ T8663] ip_sublist_rcv+0x4d4/0x5a0 [ 33.262588][ T8663] ip_list_rcv+0x262/0x290 [ 33.266988][ T8663] __netif_receive_skb_list_core+0x34b/0x450 [ 33.272958][ T8663] __netif_receive_skb_list+0x298/0x310 [ 33.278500][ T8663] netif_receive_skb_list_internal+0xda/0x330 [ 33.284577][ T8663] napi_gro_receive+0x329/0x5a0 [ 33.289414][ T8663] receive_buf+0x7a4/0xcf0 [ 33.293830][ T8663] virtnet_poll+0x2fa/0x780 [ 33.298334][ T8663] napi_poll+0x178/0x4a0 [ 33.302562][ T8663] net_rx_action+0x1ba/0x530 [ 33.307134][ T8663] __do_softirq+0x198/0x360 [ 33.311622][ T8663] run_ksoftirqd+0x2f/0x60 [ 33.316023][ T8663] smpboot_thread_fn+0x347/0x530 [ 33.320945][ T8663] kthread+0x20d/0x230 [ 33.325000][ T8663] ret_from_fork+0x1f/0x30 [ 33.329392][ T8663] [ 33.331709][ T8663] read to 0xffff88812151aad0 of 8 bytes by task 8663 on cpu 0: [ 33.339258][ T8663] do_epoll_wait+0x2e2/0x870 [ 33.343831][ T8663] __x64_sys_epoll_pwait+0x92/0x150 [ 33.349013][ T8663] do_syscall_64+0x51/0xb0 [ 33.353415][ T8663] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.359281][ T8663] [ 33.361588][ T8663] Reported by Kernel Concurrency Sanitizer on: [ 33.367730][ T8663] CPU: 0 PID: 8663 Comm: syz-fuzzer Not tainted 5.8.0-rc5-syzkaller #0 [ 33.375952][ T8663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.386004][ T8663] ================================================================== [ 33.394058][ T8663] Kernel panic - not syncing: panic_on_warn set ... [ 33.400642][ T8663] CPU: 0 PID: 8663 Comm: syz-fuzzer Not tainted 5.8.0-rc5-syzkaller #0 [ 33.408888][ T8663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.418934][ T8663] Call Trace: [ 33.422215][ T8663] dump_stack+0x10f/0x19d [ 33.426531][ T8663] panic+0x207/0x64a [ 33.430413][ T8663] ? vprintk_emit+0x44a/0x4f0 [ 33.435086][ T8663] kcsan_report+0x684/0x690 [ 33.439604][ T8663] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 33.445158][ T8663] ? do_epoll_wait+0x2e2/0x870 [ 33.450004][ T8663] ? __x64_sys_epoll_pwait+0x92/0x150 [ 33.455369][ T8663] ? do_syscall_64+0x51/0xb0 [ 33.459968][ T8663] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.466043][ T8663] ? ep_send_events_proc+0x4fd/0x620 [ 33.471345][ T8663] kcsan_setup_watchpoint+0x453/0x4d0 [ 33.476704][ T8663] do_epoll_wait+0x2e2/0x870 [ 33.481299][ T8663] ? debug_smp_processor_id+0x18/0x20 [ 33.486657][ T8663] __x64_sys_epoll_pwait+0x92/0x150 [ 33.491841][ T8663] do_syscall_64+0x51/0xb0 [ 33.496246][ T8663] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.502121][ T8663] RIP: 0033:0x469240 [ 33.505991][ T8663] Code: Bad RIP value. [ 33.510054][ T8663] RSP: 002b:000000c0003297f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 33.518487][ T8663] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 0000000000469240 [ 33.526452][ T8663] RDX: 0000000000000080 RSI: 000000c000329840 RDI: 0000000000000003 [ 33.534415][ T8663] RBP: 000000c000329e40 R08: 0000000000000000 R09: 00007ffcef7a6080 [ 33.542397][ T8663] R10: 000000000000000d R11: 0000000000000246 R12: 0000000000000003 [ 33.550355][ T8663] R13: 000000c000001e00 R14: 0000000000000004 R15: 0000000000000002 [ 33.559563][ T8663] Kernel Offset: disabled [ 33.563875][ T8663] Rebooting in 86400 seconds..