Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts. 2020/07/28 19:40:04 fuzzer started 2020/07/28 19:40:04 dialing manager at 10.128.0.105:36309 2020/07/28 19:40:05 syscalls: 3224 2020/07/28 19:40:05 code coverage: enabled 2020/07/28 19:40:05 comparison tracing: enabled 2020/07/28 19:40:05 extra coverage: enabled 2020/07/28 19:40:05 setuid sandbox: enabled 2020/07/28 19:40:05 namespace sandbox: enabled 2020/07/28 19:40:05 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/28 19:40:05 fault injection: enabled 2020/07/28 19:40:05 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/28 19:40:05 net packet injection: enabled 2020/07/28 19:40:05 net device setup: enabled 2020/07/28 19:40:05 concurrency sanitizer: enabled 2020/07/28 19:40:05 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/28 19:40:05 USB emulation: enabled 2020/07/28 19:40:05 suppressing KCSAN reports in functions: 'exit_mm' '__mod_timer' 'blk_mq_rq_ctx_init' 'ext4_free_inode' '__send_signal' 'n_tty_receive_buf_common' 'generic_write_end' '__ext4_new_inode' 'find_get_pages_range_tag' '__xa_clear_mark' [ 32.762771][ T8658] ================================================================== [ 32.770877][ T8658] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback [ 32.778135][ T8658] [ 32.780449][ T8658] write to 0xffff888120d7ca10 of 8 bytes by interrupt on cpu 0: [ 32.788227][ T8658] ep_poll_callback+0x29c/0x510 [ 32.793049][ T8658] __wake_up_common+0xbc/0x130 [ 32.797809][ T8658] __wake_up_sync_key+0x83/0xc0 [ 32.802629][ T8658] sock_def_readable+0x61/0xe0 [ 32.807360][ T8658] tcp_rcv_established+0x13c0/0x1520 [ 32.812700][ T8658] tcp_v4_do_rcv+0x25e/0x480 [ 32.817284][ T8658] tcp_v4_rcv+0x219b/0x2420 [ 32.821755][ T8658] ip_protocol_deliver_rcu+0x1f9/0x400 [ 32.827179][ T8658] ip_local_deliver+0x1d6/0x2a0 [ 32.832001][ T8658] ip_sublist_rcv+0x4d4/0x5a0 [ 32.836644][ T8658] ip_list_rcv+0x262/0x290 [ 32.841026][ T8658] __netif_receive_skb_list_core+0x34b/0x450 [ 32.846973][ T8658] __netif_receive_skb_list+0x298/0x310 [ 32.852769][ T8658] netif_receive_skb_list_internal+0xda/0x330 [ 32.858800][ T8658] napi_gro_receive+0x329/0x5a0 [ 32.863617][ T8658] receive_buf+0x7a4/0xcf0 [ 32.868085][ T8658] virtnet_poll+0x2fa/0x780 [ 32.872555][ T8658] napi_poll+0x178/0x4a0 [ 32.876775][ T8658] net_rx_action+0x1ba/0x530 [ 32.881502][ T8658] __do_softirq+0x198/0x360 [ 32.885972][ T8658] run_ksoftirqd+0x2f/0x60 [ 32.890356][ T8658] smpboot_thread_fn+0x347/0x530 [ 32.895258][ T8658] kthread+0x20d/0x230 [ 32.899305][ T8658] ret_from_fork+0x1f/0x30 [ 32.903683][ T8658] [ 32.905982][ T8658] read to 0xffff888120d7ca10 of 8 bytes by task 8658 on cpu 1: [ 32.913505][ T8658] do_epoll_wait+0x2e2/0x870 [ 32.918060][ T8658] __x64_sys_epoll_pwait+0x92/0x150 [ 32.923223][ T8658] do_syscall_64+0x51/0xb0 [ 32.927609][ T8658] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 32.933464][ T8658] [ 32.935757][ T8658] Reported by Kernel Concurrency Sanitizer on: [ 32.944669][ T8658] CPU: 1 PID: 8658 Comm: syz-fuzzer Not tainted 5.8.0-rc7-syzkaller #0 [ 32.952957][ T8658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.962978][ T8658] ================================================================== [ 32.971012][ T8658] Kernel panic - not syncing: panic_on_warn set ... [ 32.977568][ T8658] CPU: 1 PID: 8658 Comm: syz-fuzzer Not tainted 5.8.0-rc7-syzkaller #0 [ 32.985768][ T8658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.995804][ T8658] Call Trace: [ 32.999071][ T8658] dump_stack+0x10f/0x19d [ 33.003394][ T8658] panic+0x207/0x64a [ 33.007274][ T8658] ? vprintk_emit+0x44a/0x4f0 [ 33.011920][ T8658] kcsan_report+0x684/0x690 [ 33.016999][ T8658] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 33.022603][ T8658] ? do_epoll_wait+0x2e2/0x870 [ 33.027333][ T8658] ? __x64_sys_epoll_pwait+0x92/0x150 [ 33.032670][ T8658] ? do_syscall_64+0x51/0xb0 [ 33.037329][ T8658] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.043382][ T8658] ? ep_send_events_proc+0x4fd/0x620 [ 33.048653][ T8658] kcsan_setup_watchpoint+0x453/0x4d0 [ 33.054007][ T8658] do_epoll_wait+0x2e2/0x870 [ 33.058568][ T8658] ? debug_smp_processor_id+0x18/0x20 [ 33.064012][ T8658] __x64_sys_epoll_pwait+0x92/0x150 [ 33.069176][ T8658] do_syscall_64+0x51/0xb0 [ 33.073566][ T8658] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 33.079511][ T8658] RIP: 0033:0x469240 [ 33.083389][ T8658] Code: 0f 05 89 44 24 20 c3 cc cc cc 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 44 8b 54 24 1c 49 c7 c0 00 00 00 00 b8 19 01 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 c7 [ 33.102958][ T8658] RSP: 002b:000000c00010f7f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 33.111335][ T8658] RAX: ffffffffffffffda RBX: 000000000000031d RCX: 0000000000469240 [ 33.119284][ T8658] RDX: 0000000000000080 RSI: 000000c00010f840 RDI: 0000000000000003 [ 33.127222][ T8658] RBP: 000000c00010fe40 R08: 0000000000000000 R09: 0000000000000000 [ 33.135183][ T8658] R10: 000000000000031d R11: 0000000000000246 R12: 0000000000000003 [ 33.143129][ T8658] R13: 000000c000124180 R14: 0000000000000004 R15: 0000000000000002 [ 33.152262][ T8658] Kernel Offset: disabled [ 33.156567][ T8658] Rebooting in 86400 seconds..