Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts.
2020/11/08 19:56:41 fuzzer started
2020/11/08 19:56:41 dialing manager at 10.128.0.105:38531
2020/11/08 19:56:41 syscalls: 3448
2020/11/08 19:56:41 code coverage: enabled
2020/11/08 19:56:41 comparison tracing: enabled
2020/11/08 19:56:41 extra coverage: enabled
2020/11/08 19:56:41 setuid sandbox: enabled
2020/11/08 19:56:41 namespace sandbox: enabled
2020/11/08 19:56:41 Android sandbox: /sys/fs/selinux/policy does not exist
2020/11/08 19:56:41 fault injection: enabled
2020/11/08 19:56:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/11/08 19:56:41 net packet injection: enabled
2020/11/08 19:56:41 net device setup: enabled
2020/11/08 19:56:41 concurrency sanitizer: enabled
2020/11/08 19:56:41 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/11/08 19:56:41 USB emulation: enabled
2020/11/08 19:56:41 hci packet injection: enabled
2020/11/08 19:56:41 wifi device emulation: enabled
2020/11/08 19:56:44 suppressing KCSAN reports in functions: 'ext4_mark_iloc_dirty' 'do_select' 'ext4_free_inodes_count' 'ext4_free_inode' 'exit_mm' 'ext4_mb_regular_allocator' 'expire_timers' '__xa_clear_mark' 'blk_mq_sched_dispatch_requests' 'blk_mq_rq_ctx_init' '__io_cqring_fill_event' 'do_nanosleep' 'alloc_pid' '__ext4_new_inode' 'find_get_pages_range_tag' 'wg_packet_decrypt_worker' 'snd_rawmidi_kernel_write1' 'generic_write_end' '__mod_timer' 'blk_mq_dispatch_rq_list' 'wbt_done'
syzkaller login: [ 58.134640][ C1] ==================================================================
[ 58.142761][ C1] BUG: KCSAN: data-race in virtnet_poll_tx / virtqueue_add
[ 58.149938][ C1]
[ 58.152250][ C1] read-write to 0xffff8881418ab4ac of 4 bytes by task 8436 on cpu 0:
[ 58.160298][ C1] virtqueue_add+0x15dd/0x1dd0
[ 58.165047][ C1] virtqueue_add_outbuf+0x4f/0x80
[ 58.170048][ C1] start_xmit+0x6f9/0xa80
[ 58.174420][ C1] xmit_one+0xf9/0x2e0
[ 58.178468][ C1] dev_hard_start_xmit+0x72/0x120
[ 58.183572][ C1] sch_direct_xmit+0x170/0x730
[ 58.188311][ C1] __qdisc_run+0x119/0x180
[ 58.192920][ C1] __dev_queue_xmit+0xa62/0x1510
[ 58.197842][ C1] dev_queue_xmit+0x13/0x20
[ 58.202329][ C1] ip_finish_output2+0xb09/0xba0
[ 58.207252][ C1] __ip_finish_output+0x3d8/0x430
[ 58.212276][ C1] ip_finish_output+0x39/0x160
[ 58.217020][ C1] ip_output+0xf6/0x1a0
[ 58.221171][ C1] __ip_queue_xmit+0x9ca/0x9f0
[ 58.226001][ C1] ip_queue_xmit+0x34/0x40
[ 58.230402][ C1] __tcp_transmit_skb+0x1250/0x1860
[ 58.235581][ C1] __tcp_send_ack+0x1e9/0x2e0
[ 58.240244][ C1] tcp_send_ack+0x23/0x30
[ 58.244564][ C1] tcp_cleanup_rbuf+0x1c4/0x310
[ 58.249416][ C1] tcp_recvmsg+0x1119/0x1c10
[ 58.253986][ C1] inet_recvmsg+0xa3/0x210
[ 58.258414][ C1] sock_read_iter+0x19e/0x1e0
[ 58.263064][ C1] vfs_read+0x552/0x5c0
[ 58.267195][ C1] ksys_read+0xce/0x180
[ 58.271329][ C1] __x64_sys_read+0x3e/0x50
[ 58.275822][ C1] do_syscall_64+0x39/0x80
[ 58.280226][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 58.286095][ C1]
[ 58.288427][ C1] read to 0xffff8881418ab4ac of 4 bytes by interrupt on cpu 1:
[ 58.296049][ C1] virtnet_poll_tx+0x155/0x1b0
[ 58.300796][ C1] napi_poll+0x178/0x4c0
[ 58.305026][ C1] net_rx_action+0x17a/0x480
[ 58.309595][ C1] __do_softirq+0x12c/0x2b1
[ 58.314084][ C1] asm_call_irq_on_stack+0xf/0x20
[ 58.319096][ C1] do_softirq_own_stack+0x32/0x40
[ 58.324092][ C1] __irq_exit_rcu+0xb2/0xc0
[ 58.328571][ C1] common_interrupt+0xb5/0x130
[ 58.333308][ C1] asm_common_interrupt+0x1e/0x40
[ 58.338313][ C1] acpi_idle_enter+0x25b/0x2e0
[ 58.343066][ C1] cpuidle_enter_state+0x2bd/0x750
[ 58.348184][ C1] cpuidle_enter+0x3c/0x60
[ 58.352584][ C1] do_idle+0x193/0x230
[ 58.356636][ C1] cpu_startup_entry+0x15/0x20
[ 58.361388][ C1] secondary_startup_64_no_verify+0xb0/0xbb
[ 58.367271][ C1]
[ 58.369577][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 58.375716][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.0-rc2-syzkaller #0
[ 58.383665][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 58.393698][ C1] ==================================================================
[ 58.401758][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 58.408336][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.0-rc2-syzkaller #0
[ 58.416290][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 58.426322][ C1] Call Trace:
[ 58.429581][ C1]
[ 58.432412][ C1] dump_stack+0x116/0x15d
[ 58.436717][ C1] panic+0x1e7/0x5fa
[ 58.440591][ C1] ? vprintk_emit+0x2f2/0x370
[ 58.445266][ C1] kcsan_report+0x67b/0x680
[ 58.449848][ C1] ? kcsan_setup_watchpoint+0x46a/0x4d0
[ 58.455373][ C1] ? virtnet_poll_tx+0x155/0x1b0
[ 58.460294][ C1] ? napi_poll+0x178/0x4c0
[ 58.464771][ C1] ? net_rx_action+0x17a/0x480
[ 58.469595][ C1] ? __do_softirq+0x12c/0x2b1
[ 58.474246][ C1] ? asm_call_irq_on_stack+0xf/0x20
[ 58.479420][ C1] ? do_softirq_own_stack+0x32/0x40
[ 58.484616][ C1] ? __irq_exit_rcu+0xb2/0xc0
[ 58.489290][ C1] ? common_interrupt+0xb5/0x130
[ 58.494217][ C1] ? asm_common_interrupt+0x1e/0x40
[ 58.499390][ C1] ? acpi_idle_enter+0x25b/0x2e0
[ 58.504302][ C1] ? cpuidle_enter_state+0x2bd/0x750
[ 58.509566][ C1] ? cpuidle_enter+0x3c/0x60
[ 58.514140][ C1] ? do_idle+0x193/0x230
[ 58.518372][ C1] ? cpu_startup_entry+0x15/0x20
[ 58.523291][ C1] ? secondary_startup_64_no_verify+0xb0/0xbb
[ 58.529356][ C1] ? ___cache_free+0x44/0x330
[ 58.534010][ C1] ? __kfree_skb+0xfe/0x150
[ 58.538497][ C1] kcsan_setup_watchpoint+0x46a/0x4d0
[ 58.543869][ C1] virtnet_poll_tx+0x155/0x1b0
[ 58.548627][ C1] napi_poll+0x178/0x4c0
[ 58.552848][ C1] net_rx_action+0x17a/0x480
[ 58.557414][ C1] __do_softirq+0x12c/0x2b1
[ 58.561895][ C1] asm_call_irq_on_stack+0xf/0x20
[ 58.566891][ C1]
[ 58.569826][ C1] do_softirq_own_stack+0x32/0x40
[ 58.574861][ C1] __irq_exit_rcu+0xb2/0xc0
[ 58.579341][ C1] common_interrupt+0xb5/0x130
[ 58.584083][ C1] asm_common_interrupt+0x1e/0x40
[ 58.589086][ C1] RIP: 0010:acpi_idle_enter+0x25b/0x2e0
[ 58.594691][ C1] Code: 48 8b 1b 48 89 de 48 83 e6 08 31 ff e8 7e 29 90 fe 48 83 e3 08 75 63 e9 0c 00 00 00 e8 be 24 90 fe 0f 00 2d 61 e5 2a 03 fb f4 eb 59 49 8d 7c 24 04 e8 08 4e a0 fe 41 8b 54 24 04 ec 48 c7 c7
[ 58.614275][ C1] RSP: 0018:ffffc90000cd3e10 EFLAGS: 00000246
[ 58.620322][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000008b
[ 58.628295][ C1] RDX: ffff888100c25040 RSI: 0000000000000000 RDI: 0000000000000000
[ 58.636254][ C1] RBP: 0000000000000001 R08: ffffffff82b45312 R09: ffffffff82b452d3
[ 58.644226][ C1] R10: 0000000000000002 R11: ffff888100c25040 R12: ffff88810155b064
[ 58.652199][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88813bd00000
[ 58.660162][ C1] ? acpi_idle_enter+0x203/0x2e0
[ 58.665096][ C1] ? acpi_idle_enter+0x242/0x2e0
[ 58.670018][ C1] cpuidle_enter_state+0x2bd/0x750
[ 58.675107][ C1] cpuidle_enter+0x3c/0x60
[ 58.679498][ C1] do_idle+0x193/0x230
[ 58.683563][ C1] cpu_startup_entry+0x15/0x20
[ 58.688305][ C1] secondary_startup_64_no_verify+0xb0/0xbb
[ 58.694912][ C1] Kernel Offset: disabled
[ 58.699221][ C1] Rebooting in 86400 seconds..