Warning: Permanently added '10.128.0.184' (ECDSA) to the list of known hosts.
2020/08/16 20:49:10 fuzzer started
2020/08/16 20:49:10 dialing manager at 10.128.0.105:40631
2020/08/16 20:49:10 syscalls: 3272
2020/08/16 20:49:10 code coverage: enabled
2020/08/16 20:49:10 comparison tracing: enabled
2020/08/16 20:49:10 extra coverage: enabled
2020/08/16 20:49:10 setuid sandbox: enabled
2020/08/16 20:49:10 namespace sandbox: enabled
2020/08/16 20:49:10 Android sandbox: /sys/fs/selinux/policy does not exist
2020/08/16 20:49:10 fault injection: enabled
2020/08/16 20:49:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/08/16 20:49:10 net packet injection: enabled
2020/08/16 20:49:10 net device setup: enabled
2020/08/16 20:49:10 concurrency sanitizer: enabled
2020/08/16 20:49:10 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/08/16 20:49:10 USB emulation: enabled
2020/08/16 20:49:10 hci packet injection: enabled
2020/08/16 20:49:13 suppressing KCSAN reports in functions: 'expire_timers' 'do_select' 'ext4_free_inodes_count' 'do_sys_poll' 'blk_mq_rq_ctx_init' '__xa_clear_mark' 'generic_write_end' 'do_syslog' 'find_get_pages_range_tag' 'snd_rawmidi_transmit' 'pcpu_alloc' 'ext4_mb_good_group' 'blk_mq_sched_dispatch_requests' 'exit_mm' 'ext4_mark_iloc_dirty' '__mark_inode_dirty' 'ext4_mb_regular_allocator' '__ext4_new_inode' 'lookup_fast' 'inc_node_page_state' 'xas_clear_mark' 'ext4_writepages' 'dd_has_work' 'snd_rawmidi_poll' 'blk_mq_dispatch_rq_list' 'do_signal_stop' 'ext4_free_inode' 'do_nanosleep' '__delayacct_blkio_end' 'shmem_file_read_iter'
syzkaller login: [ 37.340243][ C0] ==================================================================
[ 37.348531][ C0] BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_enable_cb_delayed
[ 37.357449][ C0]
[ 37.359911][ C0] write to 0xffff88821a162a30 of 2 bytes by interrupt on cpu 1:
[ 37.367818][ C0] virtqueue_enable_cb_delayed+0x253/0x390
[ 37.374152][ C0] start_xmit+0xe6/0xad0
[ 37.378554][ C0] xmit_one+0xc0/0x310
[ 37.382719][ C0] dev_hard_start_xmit+0x72/0x120
[ 37.387995][ C0] sch_direct_xmit+0x16a/0x760
[ 37.393022][ C0] __qdisc_run+0x119/0x180
[ 37.398610][ C0] __dev_queue_xmit+0xa80/0x15a0
[ 37.403545][ C0] dev_queue_xmit+0x13/0x20
[ 37.408046][ C0] ip_finish_output2+0x707/0xb60
[ 37.412976][ C0] __ip_finish_output+0x395/0x3e0
[ 37.418080][ C0] ip_finish_output+0x39/0x160
[ 37.423142][ C0] ip_output+0xf6/0x1a0
[ 37.427515][ C0] __ip_queue_xmit+0x9b3/0x9e0
[ 37.432363][ C0] ip_queue_xmit+0x34/0x40
[ 37.436861][ C0] __tcp_transmit_skb+0x1320/0x1810
[ 37.442807][ C0] __tcp_send_ack+0x229/0x2d0
[ 37.447656][ C0] tcp_send_ack+0x23/0x30
[ 37.451972][ C0] __tcp_ack_snd_check+0x2f0/0x530
[ 37.457068][ C0] tcp_rcv_established+0x12e2/0x1520
[ 37.462580][ C0] tcp_v4_do_rcv+0x25e/0x480
[ 37.467396][ C0] tcp_v4_rcv+0x219b/0x2420
[ 37.471890][ C0] ip_protocol_deliver_rcu+0x1f9/0x400
[ 37.477326][ C0] ip_local_deliver+0x1d6/0x2a0
[ 37.482342][ C0] ip_sublist_rcv+0x4d4/0x5a0
[ 37.487004][ C0] ip_list_rcv+0x262/0x290
[ 37.491402][ C0] __netif_receive_skb_list_core+0x34b/0x450
[ 37.497383][ C0] __netif_receive_skb_list+0x298/0x310
[ 37.502914][ C0] netif_receive_skb_list_internal+0xda/0x330
[ 37.508950][ C0] napi_gro_receive+0x370/0x5f0
[ 37.513783][ C0] receive_buf+0x7a4/0xd50
[ 37.518187][ C0] virtnet_poll+0x2fa/0x780
[ 37.522669][ C0] napi_poll+0x178/0x4f0
[ 37.526893][ C0] net_rx_action+0x1ba/0x530
[ 37.531464][ C0] __do_softirq+0x198/0x360
[ 37.535956][ C0] asm_call_on_stack+0xf/0x20
[ 37.540613][ C0] do_softirq_own_stack+0x5d/0x80
[ 37.545629][ C0] __irq_exit_rcu+0x115/0x120
[ 37.550294][ C0] common_interrupt+0x14e/0x1e0
[ 37.555216][ C0] asm_common_interrupt+0x1e/0x40
[ 37.560218][ C0] native_safe_halt+0xe/0x10
[ 37.564799][ C0] acpi_idle_enter+0x30d/0x680
[ 37.569571][ C0] cpuidle_enter_state+0x245/0x5d0
[ 37.574684][ C0] cpuidle_enter+0x3c/0x60
[ 37.579087][ C0] do_idle+0x229/0x310
[ 37.583136][ C0] cpu_startup_entry+0x15/0x20
[ 37.587877][ C0] secondary_startup_64+0xa4/0xb0
[ 37.592870][ C0]
[ 37.595174][ C0] read to 0xffff88821a162a30 of 2 bytes by interrupt on cpu 0:
[ 37.602703][ C0] virtqueue_disable_cb+0x66/0x120
[ 37.607792][ C0] skb_xmit_done+0xa5/0x110
[ 37.612285][ C0] vring_interrupt+0x11e/0x140
[ 37.617031][ C0] __handle_irq_event_percpu+0x16e/0x4f0
[ 37.622636][ C0] handle_irq_event+0x94/0x140
[ 37.627378][ C0] handle_edge_irq+0x18e/0x5f0
[ 37.632113][ C0] asm_call_on_stack+0xf/0x20
[ 37.636767][ C0] common_interrupt+0xf6/0x1e0
[ 37.641514][ C0] asm_common_interrupt+0x1e/0x40
[ 37.646511][ C0] native_safe_halt+0xe/0x10
[ 37.651075][ C0] acpi_idle_enter+0x30d/0x680
[ 37.655818][ C0] cpuidle_enter_state+0x245/0x5d0
[ 37.660909][ C0] cpuidle_enter+0x3c/0x60
[ 37.665297][ C0] do_idle+0x229/0x310
[ 37.669607][ C0] cpu_startup_entry+0x15/0x20
[ 37.674347][ C0] rest_init+0xd8/0xe0
[ 37.678386][ C0] arch_call_rest_init+0xa/0xb
[ 37.683122][ C0] start_kernel+0x608/0x6d0
[ 37.687602][ C0] secondary_startup_64+0xa4/0xb0
[ 37.692599][ C0]
[ 37.694906][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 37.701036][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-syzkaller #0
[ 37.708555][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 37.718761][ C0] ==================================================================
[ 37.726806][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 37.733368][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-syzkaller #0
[ 37.740895][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 37.750936][ C0] Call Trace:
[ 37.754200][ C0]
[ 37.757049][ C0] dump_stack+0x10f/0x19d
[ 37.761362][ C0] panic+0x207/0x64a
[ 37.765243][ C0] ? vprintk_emit+0x44a/0x4f0
[ 37.769909][ C0] kcsan_report+0x684/0x690
[ 37.774413][ C0] ? kcsan_setup_watchpoint+0x41e/0x4a0
[ 37.779962][ C0] ? virtqueue_disable_cb+0x66/0x120
[ 37.785243][ C0] ? skb_xmit_done+0xa5/0x110
[ 37.789908][ C0] ? vring_interrupt+0x11e/0x140
[ 37.794832][ C0] ? __handle_irq_event_percpu+0x16e/0x4f0
[ 37.800618][ C0] ? handle_irq_event+0x94/0x140
[ 37.805541][ C0] ? handle_edge_irq+0x18e/0x5f0
[ 37.810462][ C0] ? asm_call_on_stack+0xf/0x20
[ 37.815295][ C0] ? common_interrupt+0xf6/0x1e0
[ 37.820217][ C0] ? asm_common_interrupt+0x1e/0x40
[ 37.825418][ C0] ? native_safe_halt+0xe/0x10
[ 37.830177][ C0] ? acpi_idle_enter+0x30d/0x680
[ 37.835110][ C0] ? cpuidle_enter_state+0x245/0x5d0
[ 37.840502][ C0] ? cpuidle_enter+0x3c/0x60
[ 37.845086][ C0] ? do_idle+0x229/0x310
[ 37.849317][ C0] ? cpu_startup_entry+0x15/0x20
[ 37.854242][ C0] ? rest_init+0xd8/0xe0
[ 37.858473][ C0] ? arch_call_rest_init+0xa/0xb
[ 37.863393][ C0] ? start_kernel+0x608/0x6d0
[ 37.868054][ C0] ? secondary_startup_64+0xa4/0xb0
[ 37.873244][ C0] ? __this_cpu_preempt_check+0x18/0x20
[ 37.878780][ C0] kcsan_setup_watchpoint+0x41e/0x4a0
[ 37.884151][ C0] virtqueue_disable_cb+0x66/0x120
[ 37.889269][ C0] skb_xmit_done+0xa5/0x110
[ 37.893756][ C0] ? skb_recv_done+0x90/0x90
[ 37.898332][ C0] vring_interrupt+0x11e/0x140
[ 37.903164][ C0] ? virtqueue_detach_unused_buf+0x1f0/0x1f0
[ 37.909136][ C0] __handle_irq_event_percpu+0x16e/0x4f0
[ 37.914857][ C0] handle_irq_event+0x94/0x140
[ 37.919614][ C0] handle_edge_irq+0x18e/0x5f0
[ 37.924380][ C0] ? handle_fasteoi_nmi+0x290/0x290
[ 37.929897][ C0] asm_call_on_stack+0xf/0x20
[ 37.934560][ C0]
[ 37.937482][ C0] common_interrupt+0xf6/0x1e0
[ 37.942240][ C0] asm_common_interrupt+0x1e/0x40
[ 37.947263][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 37.952631][ C0] Code: 47 fb 48 83 e5 08 75 0a e8 3f 92 47 fb e9 0d ff ff ff e8 35 92 47 fb e9 77 ff ff ff e9 07 00 00 00 0f 00 2d 34 d7 61 00 fb f4 90 e9 07 00 00 00 0f 00 2d 24 d7 61 00 f4 c3 cc cc 65 48 8b 04
[ 37.972495][ C0] RSP: 0018:ffffffff87c03d98 EFLAGS: 00000286
[ 37.978549][ C0] RAX: ffffffff87c320f0 RBX: 0000000000000000 RCX: 0000000000000037
[ 37.986506][ C0] RDX: 0000ffff87c67c00 RSI: 0000000000000000 RDI: ffffffff87c67c00
[ 37.994464][ C0] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000ffff87c67c07
[ 38.002422][ C0] R10: 0000000000000002 R11: ffffffff87c316c0 R12: ffff88812a459800
[ 38.010375][ C0] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88812a459a70
[ 38.018445][ C0] acpi_idle_enter+0x30d/0x680
[ 38.023211][ C0] cpuidle_enter_state+0x245/0x5d0
[ 38.028319][ C0] cpuidle_enter+0x3c/0x60
[ 38.032790][ C0] do_idle+0x229/0x310
[ 38.036867][ C0] cpu_startup_entry+0x15/0x20
[ 38.041649][ C0] rest_init+0xd8/0xe0
[ 38.045710][ C0] ? time_init+0xc/0xc
[ 38.049769][ C0] arch_call_rest_init+0xa/0xb
[ 38.054529][ C0] start_kernel+0x608/0x6d0
[ 38.059044][ C0] secondary_startup_64+0xa4/0xb0
[ 38.065298][ C0] Kernel Offset: disabled
[ 38.069620][ C0] Rebooting in 86400 seconds..