Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. 2020/07/20 09:34:18 fuzzer started 2020/07/20 09:34:18 dialing manager at 10.128.0.105:37371 2020/07/20 09:34:18 syscalls: 3189 2020/07/20 09:34:18 code coverage: enabled 2020/07/20 09:34:18 comparison tracing: enabled 2020/07/20 09:34:18 extra coverage: ioctl(KCOV_DISABLE) failed: invalid argument 2020/07/20 09:34:18 setuid sandbox: enabled 2020/07/20 09:34:18 namespace sandbox: enabled 2020/07/20 09:34:18 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/20 09:34:18 fault injection: enabled 2020/07/20 09:34:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/20 09:34:18 net packet injection: enabled 2020/07/20 09:34:18 net device setup: enabled 2020/07/20 09:34:18 concurrency sanitizer: enabled 2020/07/20 09:34:18 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/20 09:34:18 USB emulation: enabled 2020/07/20 09:34:19 suppressing KCSAN reports in functions: 'generic_write_end' '__xa_clear_mark' '__ext4_new_inode' 'blk_mq_rq_ctx_init' 'ext4_free_inode' 'ext4_free_inodes_count' 'blk_mq_sched_dispatch_requests' [ 32.234981][ T8631] ================================================================== [ 32.243235][ T8631] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback [ 32.250498][ T8631] [ 32.252801][ T8631] write to 0xffff88811f8e5e90 of 8 bytes by interrupt on cpu 0: [ 32.260414][ T8631] ep_poll_callback+0x29c/0x510 [ 32.265235][ T8631] __wake_up_common+0xbc/0x130 [ 32.269967][ T8631] __wake_up_sync_key+0x83/0xc0 [ 32.274800][ T8631] sock_def_readable+0x61/0xe0 [ 32.279560][ T8631] tcp_rcv_established+0x13c0/0x1520 [ 32.284851][ T8631] tcp_v4_do_rcv+0x25e/0x480 [ 32.289421][ T8631] tcp_v4_rcv+0x219b/0x2420 [ 32.293997][ T8631] ip_protocol_deliver_rcu+0x1f9/0x400 [ 32.299436][ T8631] ip_local_deliver+0x1d6/0x2a0 [ 32.304256][ T8631] ip_sublist_rcv+0x4d4/0x5a0 [ 32.308912][ T8631] ip_list_rcv+0x262/0x290 [ 32.313314][ T8631] __netif_receive_skb_list_core+0x34b/0x450 [ 32.319274][ T8631] __netif_receive_skb_list+0x298/0x310 [ 32.324790][ T8631] netif_receive_skb_list_internal+0xda/0x330 [ 32.330825][ T8631] napi_gro_receive+0x329/0x5a0 [ 32.335644][ T8631] receive_buf+0x7a4/0xcf0 [ 32.340026][ T8631] virtnet_poll+0x2fa/0x780 [ 32.344519][ T8631] napi_poll+0x178/0x4a0 [ 32.348745][ T8631] net_rx_action+0x1ba/0x530 [ 32.353317][ T8631] __do_softirq+0x198/0x360 [ 32.357789][ T8631] asm_call_on_stack+0xf/0x20 [ 32.362435][ T8631] do_softirq_own_stack+0x5d/0x80 [ 32.367440][ T8631] __irq_exit_rcu+0x115/0x120 [ 32.372085][ T8631] common_interrupt+0x14e/0x1e0 [ 32.376919][ T8631] asm_common_interrupt+0x1e/0x40 [ 32.381922][ T8631] native_safe_halt+0xe/0x10 [ 32.386507][ T8631] acpi_idle_enter+0x2ff/0x680 [ 32.391238][ T8631] cpuidle_enter_state+0x245/0x5d0 [ 32.396329][ T8631] cpuidle_enter+0x3c/0x60 [ 32.400727][ T8631] do_idle+0x229/0x310 [ 32.404787][ T8631] cpu_startup_entry+0x15/0x20 [ 32.409535][ T8631] rest_init+0xd8/0xe0 [ 32.413576][ T8631] arch_call_rest_init+0xa/0xb [ 32.418321][ T8631] start_kernel+0x608/0x6d0 [ 32.422796][ T8631] secondary_startup_64+0xa4/0xb0 [ 32.427781][ T8631] [ 32.430094][ T8631] read to 0xffff88811f8e5e90 of 8 bytes by task 8631 on cpu 1: [ 32.437620][ T8631] do_epoll_wait+0x2e2/0x870 [ 32.442180][ T8631] __x64_sys_epoll_pwait+0x92/0x150 [ 32.447346][ T8631] do_syscall_64+0x51/0xb0 [ 32.451748][ T8631] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 32.457601][ T8631] [ 32.459900][ T8631] Reported by Kernel Concurrency Sanitizer on: [ 32.466041][ T8631] CPU: 1 PID: 8631 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0 [ 32.474255][ T8631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.484300][ T8631] ================================================================== [ 32.492330][ T8631] Kernel panic - not syncing: panic_on_warn set ... [ 32.498924][ T8631] CPU: 1 PID: 8631 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0 [ 32.507175][ T8631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.517238][ T8631] Call Trace: [ 32.520527][ T8631] dump_stack+0x10f/0x19d [ 32.524827][ T8631] panic+0x207/0x64a [ 32.528711][ T8631] ? vprintk_emit+0x44a/0x4f0 [ 32.533400][ T8631] kcsan_report+0x684/0x690 [ 32.537879][ T8631] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 32.543406][ T8631] ? do_epoll_wait+0x2e2/0x870 [ 32.548136][ T8631] ? __x64_sys_epoll_pwait+0x92/0x150 [ 32.553484][ T8631] ? do_syscall_64+0x51/0xb0 [ 32.558044][ T8631] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 32.564084][ T8631] ? ep_send_events_proc+0x4fd/0x620 [ 32.569339][ T8631] kcsan_setup_watchpoint+0x453/0x4d0 [ 32.574685][ T8631] do_epoll_wait+0x2e2/0x870 [ 32.579245][ T8631] ? debug_smp_processor_id+0x18/0x20 [ 32.584714][ T8631] __x64_sys_epoll_pwait+0x92/0x150 [ 32.589897][ T8631] do_syscall_64+0x51/0xb0 [ 32.594301][ T8631] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 32.600167][ T8631] RIP: 0033:0x469240 [ 32.604031][ T8631] Code: Bad RIP value. [ 32.608102][ T8631] RSP: 002b:000000c0000497f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 32.616483][ T8631] RAX: ffffffffffffffda RBX: 0000000000000031 RCX: 0000000000469240 [ 32.624427][ T8631] RDX: 0000000000000080 RSI: 000000c000049840 RDI: 0000000000000003 [ 32.632369][ T8631] RBP: 000000c000049e40 R08: 0000000000000000 R09: 0000000000000000 [ 32.640310][ T8631] R10: 0000000000000031 R11: 0000000000000246 R12: 0000000000000003 [ 32.648267][ T8631] R13: 000000c000000f00 R14: 0000000000000010 R15: 0000000000000010 [ 32.657221][ T8631] Kernel Offset: disabled [ 32.661528][ T8631] Rebooting in 86400 seconds..