Warning: Permanently added '10.128.0.114' (ECDSA) to the list of known hosts. 2020/07/24 22:22:29 fuzzer started 2020/07/24 22:22:29 dialing manager at 10.128.0.105:40099 2020/07/24 22:22:30 syscalls: 3213 2020/07/24 22:22:30 code coverage: enabled 2020/07/24 22:22:30 comparison tracing: enabled 2020/07/24 22:22:30 extra coverage: enabled 2020/07/24 22:22:30 setuid sandbox: enabled 2020/07/24 22:22:30 namespace sandbox: enabled 2020/07/24 22:22:30 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/24 22:22:30 fault injection: enabled 2020/07/24 22:22:30 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/24 22:22:30 net packet injection: enabled 2020/07/24 22:22:30 net device setup: enabled 2020/07/24 22:22:30 concurrency sanitizer: enabled 2020/07/24 22:22:30 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/24 22:22:30 USB emulation: enabled 2020/07/24 22:22:31 suppressing KCSAN reports in functions: 'atime_needs_update' 'dd_has_work' 'xas_clear_mark' '__xa_clear_mark' 'generic_write_end' 'ext4_writepages' 'blk_mq_dispatch_rq_list' 'ext4_free_inode' 'expire_timers' '__ext4_new_inode' [ 37.853084][ T8646] ================================================================== [ 37.861208][ T8646] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback [ 37.868493][ T8646] [ 37.870815][ T8646] write to 0xffff88812841c050 of 8 bytes by interrupt on cpu 1: [ 37.878425][ T8646] ep_poll_callback+0x29c/0x510 [ 37.883253][ T8646] __wake_up_common+0xbc/0x130 [ 37.888005][ T8646] __wake_up_sync_key+0x83/0xc0 [ 37.892844][ T8646] sock_def_readable+0x61/0xe0 [ 37.897584][ T8646] tcp_rcv_established+0x13c0/0x1520 [ 37.902864][ T8646] tcp_v4_do_rcv+0x25e/0x480 [ 37.907443][ T8646] tcp_v4_rcv+0x219b/0x2420 [ 37.911962][ T8646] ip_protocol_deliver_rcu+0x1f9/0x400 [ 37.917419][ T8646] ip_local_deliver+0x1d6/0x2a0 [ 37.922247][ T8646] ip_sublist_rcv+0x4d4/0x5a0 [ 37.926914][ T8646] ip_list_rcv+0x262/0x290 [ 37.931311][ T8646] __netif_receive_skb_list_core+0x34b/0x450 [ 37.937272][ T8646] __netif_receive_skb_list+0x298/0x310 [ 37.942795][ T8646] netif_receive_skb_list_internal+0xda/0x330 [ 37.948860][ T8646] napi_complete_done+0x1a1/0x3c0 [ 37.953882][ T8646] virtqueue_napi_complete+0x28/0x80 [ 37.959155][ T8646] virtnet_poll+0x64f/0x780 [ 37.963654][ T8646] napi_poll+0x178/0x4a0 [ 37.967874][ T8646] net_rx_action+0x1ba/0x530 [ 37.972453][ T8646] __do_softirq+0x198/0x360 [ 37.976933][ T8646] run_ksoftirqd+0x2f/0x60 [ 37.985416][ T8646] smpboot_thread_fn+0x347/0x530 [ 37.990342][ T8646] kthread+0x20d/0x230 [ 37.995388][ T8646] ret_from_fork+0x1f/0x30 [ 37.999785][ T8646] [ 38.002094][ T8646] read to 0xffff88812841c050 of 8 bytes by task 8646 on cpu 0: [ 38.009630][ T8646] do_epoll_wait+0x2e2/0x870 [ 38.014214][ T8646] __x64_sys_epoll_pwait+0x92/0x150 [ 38.019391][ T8646] do_syscall_64+0x51/0xb0 [ 38.023799][ T8646] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.029674][ T8646] [ 38.031987][ T8646] Reported by Kernel Concurrency Sanitizer on: [ 38.038119][ T8646] CPU: 0 PID: 8646 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0 [ 38.046339][ T8646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.056371][ T8646] ================================================================== [ 38.064426][ T8646] Kernel panic - not syncing: panic_on_warn set ... [ 38.072037][ T8646] CPU: 0 PID: 8646 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0 [ 38.080263][ T8646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.090309][ T8646] Call Trace: [ 38.093591][ T8646] dump_stack+0x10f/0x19d [ 38.097911][ T8646] panic+0x207/0x64a [ 38.101787][ T8646] ? vprintk_emit+0x44a/0x4f0 [ 38.106450][ T8646] kcsan_report+0x684/0x690 [ 38.110948][ T8646] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 38.116471][ T8646] ? do_epoll_wait+0x2e2/0x870 [ 38.121211][ T8646] ? __x64_sys_epoll_pwait+0x92/0x150 [ 38.126561][ T8646] ? do_syscall_64+0x51/0xb0 [ 38.131144][ T8646] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.137211][ T8646] ? ep_send_events_proc+0x4fd/0x620 [ 38.142489][ T8646] kcsan_setup_watchpoint+0x453/0x4d0 [ 38.147861][ T8646] do_epoll_wait+0x2e2/0x870 [ 38.152431][ T8646] ? debug_smp_processor_id+0x18/0x20 [ 38.157791][ T8646] __x64_sys_epoll_pwait+0x92/0x150 [ 38.162965][ T8646] do_syscall_64+0x51/0xb0 [ 38.167373][ T8646] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.173252][ T8646] RIP: 0033:0x469240 [ 38.177162][ T8646] Code: Bad RIP value. [ 38.181219][ T8646] RSP: 002b:000000c0000c97f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 38.189619][ T8646] RAX: ffffffffffffffda RBX: 00000000000000b8 RCX: 0000000000469240 [ 38.197565][ T8646] RDX: 0000000000000080 RSI: 000000c0000c9840 RDI: 0000000000000003 [ 38.205522][ T8646] RBP: 000000c0000c9e40 R08: 0000000000000000 R09: 0000000000000000 [ 38.213486][ T8646] R10: 00000000000000b8 R11: 0000000000000246 R12: 0000000000000003 [ 38.222229][ T8646] R13: 000000c000001500 R14: 0000000000000008 R15: 0000000000000004 [ 38.231212][ T8646] Kernel Offset: disabled [ 38.235527][ T8646] Rebooting in 86400 seconds..