Warning: Permanently added '10.128.0.161' (ECDSA) to the list of known hosts. 2019/10/18 07:26:49 fuzzer started 2019/10/18 07:26:54 dialing manager at 10.128.0.26:46011 2019/10/18 07:26:54 syscalls: 2415 2019/10/18 07:26:54 code coverage: enabled 2019/10/18 07:26:54 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/10/18 07:26:54 extra coverage: enabled 2019/10/18 07:26:54 setuid sandbox: enabled 2019/10/18 07:26:54 namespace sandbox: enabled 2019/10/18 07:26:54 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/18 07:26:54 fault injection: enabled 2019/10/18 07:26:54 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/18 07:26:54 net packet injection: enabled 2019/10/18 07:26:54 net device setup: enabled 2019/10/18 07:26:54 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist syzkaller login: [ 299.349275][ C0] ===================================================== [ 299.356408][ C0] BUG: KMSAN: use-after-free in kmem_cache_free+0x3df/0x2b70 [ 299.363759][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-rc3+ #0 [ 299.371012][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 299.381043][ C0] Call Trace: [ 299.384315][ C0] dump_stack+0x191/0x1f0 [ 299.388631][ C0] kmsan_report+0x14a/0x2f0 [ 299.393380][ C0] __msan_warning+0x73/0xf0 [ 299.397863][ C0] kmem_cache_free+0x3df/0x2b70 [ 299.402893][ C0] ? kmsan_internal_set_origin+0x6a/0xb0 [ 299.408522][ C0] ? kfree_skb+0x473/0x4c0 [ 299.413013][ C0] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 299.419114][ C0] kfree_skb+0x473/0x4c0 [ 299.423859][ C0] ? packet_rcv_spkt+0x68d/0x7c0 [ 299.428776][ C0] packet_rcv_spkt+0x68d/0x7c0 [ 299.433534][ C0] ? packet_rcv+0x2110/0x2110 [ 299.438276][ C0] __netif_receive_skb_core+0x3aed/0x51a0 [ 299.443992][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 299.449867][ C0] netif_receive_skb_internal+0x3cc/0xc20 [ 299.455576][ C0] napi_gro_receive+0x67f/0xbb0 [ 299.460412][ C0] receive_buf+0x653b/0x8810 [ 299.465023][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 299.470980][ C0] virtnet_poll+0x666/0x1a10 [ 299.475559][ C0] ? refill_work+0x470/0x470 [ 299.480135][ C0] net_rx_action+0x7a6/0x1aa0 [ 299.484798][ C0] ? net_tx_action+0xc40/0xc40 [ 299.489654][ C0] __do_softirq+0x4a1/0x83a [ 299.494229][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 299.499403][ C0] ? takeover_tasklets+0x900/0x900 [ 299.504505][ C0] run_ksoftirqd+0x25/0x40 [ 299.508899][ C0] smpboot_thread_fn+0x4a3/0x990 [ 299.513857][ C0] kthread+0x4b5/0x4f0 [ 299.518002][ C0] ? cpu_report_death+0x190/0x190 [ 299.523231][ C0] ? kthread_blkcg+0xf0/0xf0 [ 299.527800][ C0] ret_from_fork+0x35/0x40 [ 299.532225][ C0] [ 299.534536][ C0] Uninit was stored to memory at: [ 299.539551][ C0] kmsan_internal_chain_origin+0xbd/0x170 [ 299.545304][ C0] __msan_chain_origin+0x6b/0xe0 [ 299.550219][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 299.554997][ C0] kmem_cache_alloc+0xade/0xd10 [ 299.559830][ C0] skb_clone+0x326/0x5d0 [ 299.564048][ C0] packet_rcv_spkt+0x23f/0x7c0 [ 299.568897][ C0] __netif_receive_skb_core+0x3aed/0x51a0 [ 299.574606][ C0] netif_receive_skb_internal+0x3cc/0xc20 [ 299.580314][ C0] napi_gro_receive+0x67f/0xbb0 [ 299.585160][ C0] receive_buf+0x653b/0x8810 [ 299.589920][ C0] virtnet_poll+0x666/0x1a10 [ 299.594505][ C0] net_rx_action+0x7a6/0x1aa0 [ 299.599183][ C0] __do_softirq+0x4a1/0x83a [ 299.603688][ C0] run_ksoftirqd+0x25/0x40 [ 299.608081][ C0] smpboot_thread_fn+0x4a3/0x990 [ 299.612997][ C0] kthread+0x4b5/0x4f0 [ 299.617048][ C0] ret_from_fork+0x35/0x40 [ 299.621433][ C0] [ 299.623735][ C0] Uninit was created at: [ 299.627964][ C0] kmsan_internal_poison_shadow+0x60/0x110 [ 299.634091][ C0] kmsan_slab_free+0x8d/0x100 [ 299.638741][ C0] kmem_cache_free_bulk+0x3ad9/0x3f10 [ 299.644121][ C0] __kfree_skb_flush+0xb0/0x100 [ 299.649045][ C0] net_rx_action+0x1a5e/0x1aa0 [ 299.653790][ C0] __do_softirq+0x4a1/0x83a [ 299.658441][ C0] irq_exit+0x230/0x280 [ 299.662585][ C0] do_IRQ+0x123/0x360 [ 299.666543][ C0] ret_from_intr+0x0/0x33 [ 299.670859][ C0] default_idle+0x53/0x90 [ 299.675176][ C0] arch_cpu_idle+0x25/0x30 [ 299.679576][ C0] do_idle+0x1d5/0x780 [ 299.683655][ C0] cpu_startup_entry+0x45/0x50 [ 299.688407][ C0] rest_init+0x1be/0x1f0 [ 299.692636][ C0] arch_call_rest_init+0x13/0x15 [ 299.697822][ C0] start_kernel+0x987/0xb57 [ 299.702313][ C0] x86_64_start_reservations+0x18/0x2e [ 299.707747][ C0] x86_64_start_kernel+0x81/0x84 [ 299.712676][ C0] secondary_startup_64+0xa4/0xb0 [ 299.717681][ C0] ===================================================== [ 299.725500][ C0] Disabling lock debugging due to kernel taint [ 299.731653][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 299.738310][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Tainted: G B 5.4.0-rc3+ #0 [ 299.747128][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 299.757173][ C0] Call Trace: [ 299.760486][ C0] dump_stack+0x191/0x1f0 [ 299.766737][ C0] panic+0x3c9/0xc1e [ 299.773105][ C0] kmsan_report+0x2e8/0x2f0 [ 299.778200][ C0] __msan_warning+0x73/0xf0 [ 299.782705][ C0] kmem_cache_free+0x3df/0x2b70 [ 299.787799][ C0] ? kmsan_internal_set_origin+0x6a/0xb0 [ 299.793420][ C0] ? kfree_skb+0x473/0x4c0 [ 299.797817][ C0] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 299.803875][ C0] kfree_skb+0x473/0x4c0 [ 299.808095][ C0] ? packet_rcv_spkt+0x68d/0x7c0 [ 299.813010][ C0] packet_rcv_spkt+0x68d/0x7c0 [ 299.817757][ C0] ? packet_rcv+0x2110/0x2110 [ 299.822541][ C0] __netif_receive_skb_core+0x3aed/0x51a0 [ 299.828355][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 299.834253][ C0] netif_receive_skb_internal+0x3cc/0xc20 [ 299.839971][ C0] napi_gro_receive+0x67f/0xbb0 [ 299.845508][ C0] receive_buf+0x653b/0x8810 [ 299.850100][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 299.856079][ C0] virtnet_poll+0x666/0x1a10 [ 299.860659][ C0] ? refill_work+0x470/0x470 [ 299.865227][ C0] net_rx_action+0x7a6/0x1aa0 [ 299.869890][ C0] ? net_tx_action+0xc40/0xc40 [ 299.874642][ C0] __do_softirq+0x4a1/0x83a [ 299.881737][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 299.886911][ C0] ? takeover_tasklets+0x900/0x900 [ 299.891997][ C0] run_ksoftirqd+0x25/0x40 [ 299.896396][ C0] smpboot_thread_fn+0x4a3/0x990 [ 299.901319][ C0] kthread+0x4b5/0x4f0 [ 299.905585][ C0] ? cpu_report_death+0x190/0x190 [ 299.910604][ C0] ? kthread_blkcg+0xf0/0xf0 [ 299.916310][ C0] ret_from_fork+0x35/0x40 [ 299.922629][ C0] Kernel Offset: disabled [ 299.926960][ C0] Rebooting in 86400 seconds..