Warning: Permanently added '10.128.0.150' (ECDSA) to the list of known hosts.
2019/12/12 17:37:08 fuzzer started
2019/12/12 17:37:10 dialing manager at 10.128.0.105:37995
2019/12/12 17:37:10 syscalls: 2689
2019/12/12 17:37:10 code coverage: enabled
2019/12/12 17:37:10 comparison tracing: enabled
2019/12/12 17:37:10 extra coverage: extra coverage is not supported by the kernel
2019/12/12 17:37:10 setuid sandbox: enabled
2019/12/12 17:37:10 namespace sandbox: enabled
2019/12/12 17:37:10 Android sandbox: /sys/fs/selinux/policy does not exist
2019/12/12 17:37:10 fault injection: enabled
2019/12/12 17:37:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/12/12 17:37:10 net packet injection: enabled
2019/12/12 17:37:10 net device setup: enabled
2019/12/12 17:37:10 concurrency sanitizer: enabled
2019/12/12 17:37:10 devlink PCI setup: PCI device 0000:00:10.0 is not available
2019/12/12 17:37:12 adding functions to KCSAN blacklist: 'exit_signals' 'blk_mq_get_request' 'pipe_poll' '__splice_from_pipe' 'tomoyo_supervisor' 'rcu_gp_fqs_loop' 'find_next_bit' '__ext4_new_inode' 'ep_poll' 'find_get_pages_range_tag' 'tcp_add_backlog' 'mod_timer' 'tick_do_update_jiffies64' 'ext4_has_free_clusters' 'tick_sched_do_timer' '__hrtimer_run_queues' 'vm_area_dup' 'run_timer_softirq' 'generic_write_end'
syzkaller login: [ 65.063434][ C0] ==================================================================
[ 65.071574][ C0] BUG: KCSAN: data-race in virtqueue_enable_cb_delayed / virtqueue_enable_cb_prepare
[ 65.081019][ C0]
[ 65.083386][ C0] read to 0xffff88821b1a4c70 of 2 bytes by interrupt on cpu 1:
[ 65.090925][ C0] virtqueue_enable_cb_delayed+0x1dc/0x4d0
[ 65.096713][ C0] start_xmit+0xb0f/0xbe0
[ 65.101026][ C0] dev_hard_start_xmit+0xef/0x430
[ 65.106055][ C0] sch_direct_xmit+0x2b3/0x900
[ 65.110811][ C0] __dev_queue_xmit+0x19a3/0x1b40
[ 65.115835][ C0] dev_queue_xmit+0x21/0x30
[ 65.120331][ C0] ip_finish_output2+0x836/0xe40
[ 65.125259][ C0] __ip_finish_output+0x23a/0x490
[ 65.130273][ C0] ip_finish_output+0x41/0x160
[ 65.135031][ C0] ip_output+0xdf/0x210
[ 65.139180][ C0] ip_local_out+0x74/0x90
[ 65.143492][ C0] __ip_queue_xmit+0x3a8/0xa40
[ 65.148243][ C0] ip_queue_xmit+0x45/0x60
[ 65.152656][ C0] __tcp_transmit_skb+0xe81/0x1d60
[ 65.157755][ C0] __tcp_send_ack+0x246/0x300
[ 65.162420][ C0] tcp_send_ack+0x34/0x40
[ 65.166752][ C0] __tcp_ack_snd_check+0xd9/0x4f0
[ 65.171768][ C0] tcp_rcv_established+0xce9/0xf50
[ 65.176872][ C0] tcp_v4_do_rcv+0x3b5/0x520
[ 65.181456][ C0] tcp_v4_rcv+0x19ec/0x1bd0
[ 65.185951][ C0] ip_protocol_deliver_rcu+0x4d/0x420
[ 65.191305][ C0] ip_local_deliver_finish+0x110/0x140
[ 65.196747][ C0] ip_local_deliver+0x133/0x210
[ 65.201592][ C0] ip_rcv_finish+0x121/0x160
[ 65.206175][ C0] ip_rcv+0x18f/0x1a0
[ 65.210169][ C0] __netif_receive_skb_one_core+0xa7/0xe0
[ 65.215878][ C0] __netif_receive_skb+0x37/0xf0
[ 65.220807][ C0] netif_receive_skb_internal+0x59/0x190
[ 65.226430][ C0] napi_gro_receive+0x28f/0x330
[ 65.231367][ C0] receive_buf+0x284/0x30b0
[ 65.235877][ C0] virtnet_poll+0x436/0x7d0
[ 65.240374][ C0] net_rx_action+0x3ae/0xa90
[ 65.244976][ C0] __do_softirq+0x115/0x33f
[ 65.249469][ C0] irq_exit+0xbb/0xe0
[ 65.253453][ C0] do_IRQ+0x81/0x130
[ 65.257350][ C0] ret_from_intr+0x0/0x19
[ 65.261678][ C0] native_safe_halt+0xe/0x10
[ 65.266260][ C0] arch_cpu_idle+0xa/0x10
[ 65.270570][ C0] default_idle_call+0x1e/0x40
[ 65.275320][ C0] do_idle+0x1af/0x280
[ 65.279385][ C0] cpu_startup_entry+0x1b/0x20
[ 65.284150][ C0] start_secondary+0x168/0x1b0
[ 65.288904][ C0] secondary_startup_64+0xa4/0xb0
[ 65.294861][ C0]
[ 65.297203][ C0] write to 0xffff88821b1a4c70 of 2 bytes by interrupt on cpu 0:
[ 65.305000][ C0] virtqueue_enable_cb_prepare+0x1ce/0x2b0
[ 65.310806][ C0] virtqueue_napi_complete+0x2c/0xa0
[ 65.316080][ C0] virtnet_poll_tx+0x15f/0x1d0
[ 65.320839][ C0] net_rx_action+0x3ae/0xa90
[ 65.325414][ C0] __do_softirq+0x115/0x33f
[ 65.329902][ C0] irq_exit+0xbb/0xe0
[ 65.333872][ C0] do_IRQ+0x81/0x130
[ 65.337753][ C0] ret_from_intr+0x0/0x19
[ 65.342073][ C0] native_safe_halt+0xe/0x10
[ 65.346665][ C0] arch_cpu_idle+0xa/0x10
[ 65.350982][ C0] default_idle_call+0x1e/0x40
[ 65.355764][ C0] do_idle+0x1af/0x280
[ 65.359818][ C0] cpu_startup_entry+0x1b/0x20
[ 65.364573][ C0] rest_init+0xec/0xf6
[ 65.368643][ C0] arch_call_rest_init+0x17/0x37
[ 65.373582][ C0] start_kernel+0x838/0x85e
[ 65.378077][ C0] x86_64_start_reservations+0x29/0x2b
[ 65.383536][ C0] x86_64_start_kernel+0x72/0x76
[ 65.388469][ C0] secondary_startup_64+0xa4/0xb0
[ 65.393471][ C0]
[ 65.395783][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 65.401927][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-syzkaller #0
[ 65.409466][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 65.419619][ C0] ==================================================================
[ 65.427674][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 65.434257][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-syzkaller #0
[ 65.441787][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 65.451833][ C0] Call Trace:
[ 65.455101][ C0]
[ 65.457966][ C0] dump_stack+0x11d/0x181
[ 65.462355][ C0] panic+0x210/0x640
[ 65.466253][ C0] ? vprintk_func+0x8d/0x140
[ 65.470849][ C0] kcsan_report.cold+0xc/0xd
[ 65.475447][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 65.480826][ C0] __tsan_unaligned_write2+0xc4/0x100
[ 65.486201][ C0] virtqueue_enable_cb_prepare+0x1ce/0x2b0
[ 65.492007][ C0] virtqueue_napi_complete+0x2c/0xa0
[ 65.497312][ C0] virtnet_poll_tx+0x15f/0x1d0
[ 65.502084][ C0] net_rx_action+0x3ae/0xa90
[ 65.506701][ C0] __do_softirq+0x115/0x33f
[ 65.511223][ C0] irq_exit+0xbb/0xe0
[ 65.515216][ C0] do_IRQ+0x81/0x130
[ 65.519104][ C0] common_interrupt+0xf/0xf
[ 65.523595][ C0]
[ 65.526542][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 65.531911][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 7c ad 48 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 6c ad 48 00 fb f4 90 55 48 89 e5 41 55 41 54 53 e8 42 6d 9f fc e8 7d 1a b5 fd 0f
[ 65.551507][ C0] RSP: 0018:ffffffff85a03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd6
[ 65.559906][ C0] RAX: 0000000000000000 RBX: ffffffff85a2b780 RCX: ffffffff824ee309
[ 65.567865][ C0] RDX: 0000000000000000 RSI: ffffffff824ee317 RDI: 0000000000000005
[ 65.575830][ C0] RBP: ffffffff85a03e18 R08: ffffffff85a2b780 R09: 0000ffff857d2160
[ 65.583798][ C0] R10: 0000000000000000 R11: 0000ffff857d2167 R12: 0000000000000000
[ 65.591766][ C0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 65.599744][ C0] ? debug_smp_processor_id+0x39/0x172
[ 65.605199][ C0] ? debug_smp_processor_id+0x47/0x172
[ 65.610667][ C0] ? default_idle+0x26/0x180
[ 65.615250][ C0] arch_cpu_idle+0xa/0x10
[ 65.619573][ C0] default_idle_call+0x1e/0x40
[ 65.624330][ C0] do_idle+0x1af/0x280
[ 65.628404][ C0] cpu_startup_entry+0x1b/0x20
[ 65.633169][ C0] rest_init+0xec/0xf6
[ 65.637242][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 65.644443][ C0] arch_call_rest_init+0x17/0x37
[ 65.649382][ C0] start_kernel+0x838/0x85e
[ 65.653886][ C0] x86_64_start_reservations+0x29/0x2b
[ 65.659343][ C0] x86_64_start_kernel+0x72/0x76
[ 65.664282][ C0] secondary_startup_64+0xa4/0xb0
[ 65.670468][ C0] Kernel Offset: disabled
[ 65.674793][ C0] Rebooting in 86400 seconds..