Warning: Permanently added '10.128.1.19' (ECDSA) to the list of known hosts. 2019/10/05 06:13:45 fuzzer started 2019/10/05 06:13:49 dialing manager at 10.128.0.26:41347 2019/10/05 06:13:49 syscalls: 2412 2019/10/05 06:13:49 code coverage: enabled 2019/10/05 06:13:49 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/10/05 06:13:49 extra coverage: enabled 2019/10/05 06:13:49 setuid sandbox: enabled 2019/10/05 06:13:49 namespace sandbox: enabled 2019/10/05 06:13:49 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/05 06:13:49 fault injection: enabled 2019/10/05 06:13:49 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/05 06:13:49 net packet injection: enabled 2019/10/05 06:13:49 net device setup: enabled 2019/10/05 06:13:49 concurrency sanitizer: /proc/kcsaninfo does not exist syzkaller login: [ 119.232019][T12149] ===================================================== [ 119.239542][T12149] BUG: KMSAN: uninit-value in kfree_skb+0x473/0x4c0 [ 119.246154][T12149] CPU: 1 PID: 12149 Comm: syz-fuzzer Not tainted 5.3.0-rc7+ #0 [ 119.254106][T12149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.264179][T12149] Call Trace: [ 119.267454][T12149] dump_stack+0x191/0x1f0 [ 119.271773][T12149] kmsan_report+0x13a/0x2b0 [ 119.276274][T12149] __msan_warning+0x73/0xe0 [ 119.280762][T12149] kmem_cache_free+0x3df/0x2b70 [ 119.285603][T12149] ? kmsan_internal_set_origin+0x6a/0xb0 [ 119.291242][T12149] ? kfree_skb+0x473/0x4c0 [ 119.295731][T12149] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 119.301797][T12149] kfree_skb+0x473/0x4c0 [ 119.306019][T12149] ? packet_rcv_spkt+0x719/0x840 [ 119.310936][T12149] packet_rcv_spkt+0x719/0x840 [ 119.315686][T12149] ? packet_rcv+0x2190/0x2190 [ 119.320342][T12149] dev_queue_xmit_nit+0x1125/0x1200 [ 119.325531][T12149] dev_hard_start_xmit+0x21e/0xab0 [ 119.330632][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 119.336516][T12149] sch_direct_xmit+0x56c/0x18c0 [ 119.341365][T12149] __dev_queue_xmit+0x1e53/0x4270 [ 119.346391][T12149] dev_queue_xmit+0x4b/0x60 [ 119.350873][T12149] ip_finish_output2+0x20c6/0x25d0 [ 119.355964][T12149] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 119.362006][T12149] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 119.367988][T12149] __ip_finish_output+0xaf8/0xda0 [ 119.372998][T12149] ip_finish_output+0x2db/0x420 [ 119.377831][T12149] ip_output+0x541/0x610 [ 119.382056][T12149] ? ip_mc_finish_output+0x6d0/0x6d0 [ 119.387317][T12149] ? ip_finish_output+0x420/0x420 [ 119.392336][T12149] __ip_queue_xmit+0x1caf/0x21f0 [ 119.397260][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 119.403130][T12149] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 119.409174][T12149] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 119.415228][T12149] ip_queue_xmit+0xcc/0xf0 [ 119.419642][T12149] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 119.425256][T12149] __tcp_transmit_skb+0x409e/0x5c60 [ 119.430466][T12149] __tcp_send_ack+0x701/0x840 [ 119.435128][T12149] tcp_send_ack+0x68/0x90 [ 119.439439][T12149] tcp_cleanup_rbuf+0x764/0x800 [ 119.444274][T12149] tcp_recvmsg+0x334d/0x4ff0 [ 119.448868][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 119.454742][T12149] ? tcp_mmap+0x150/0x150 [ 119.459046][T12149] ? tcp_mmap+0x150/0x150 [ 119.463352][T12149] inet_recvmsg+0x237/0x7d0 [ 119.467838][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 119.473709][T12149] ? inet_sendpage+0x2c0/0x2c0 [ 119.478450][T12149] ? inet_sendpage+0x2c0/0x2c0 [ 119.483263][T12149] sock_read_iter+0x5be/0x660 [ 119.487926][T12149] ? kernel_sock_ip_overhead+0x340/0x340 [ 119.493539][T12149] __vfs_read+0xa67/0xc90 [ 119.497859][T12149] vfs_read+0x359/0x6f0 [ 119.502004][T12149] ksys_read+0x265/0x430 [ 119.506233][T12149] __se_sys_read+0x92/0xb0 [ 119.510633][T12149] __x64_sys_read+0x4a/0x70 [ 119.515475][T12149] do_syscall_64+0xbc/0xf0 [ 119.519872][T12149] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.525742][T12149] RIP: 0033:0x47fd44 [ 119.529614][T12149] Code: ff ff cc cc cc cc e8 9b 40 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 119.549211][T12149] RSP: 002b:000000c42039d710 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 119.557612][T12149] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd44 [ 119.565572][T12149] RDX: 0000000000001000 RSI: 000000c420352000 RDI: 0000000000000003 [ 119.573526][T12149] RBP: 000000c42039d760 R08: 0000000000000000 R09: 0000000000000000 [ 119.581489][T12149] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 119.589448][T12149] R13: 0000000000000002 R14: 0000000000000004 R15: ffffffffffffffff [ 119.597417][T12149] [ 119.599730][T12149] Uninit was stored to memory at: [ 119.604752][T12149] kmsan_internal_chain_origin+0xd2/0x170 [ 119.610452][T12149] __msan_chain_origin+0x6b/0xe0 [ 119.615396][T12149] ___slab_alloc+0x1dbc/0x1fb0 [ 119.620139][T12149] kmem_cache_alloc+0xade/0xd10 [ 119.624966][T12149] skb_clone+0x326/0x5d0 [ 119.629195][T12149] dev_queue_xmit_nit+0x539/0x1200 [ 119.634303][T12149] dev_hard_start_xmit+0x21e/0xab0 [ 119.639392][T12149] sch_direct_xmit+0x56c/0x18c0 [ 119.644218][T12149] __dev_queue_xmit+0x1e53/0x4270 [ 119.649218][T12149] dev_queue_xmit+0x4b/0x60 [ 119.653721][T12149] ip_finish_output2+0x20c6/0x25d0 [ 119.658811][T12149] __ip_finish_output+0xaf8/0xda0 [ 119.663820][T12149] ip_finish_output+0x2db/0x420 [ 119.668647][T12149] ip_output+0x541/0x610 [ 119.672868][T12149] __ip_queue_xmit+0x1caf/0x21f0 [ 119.677783][T12149] ip_queue_xmit+0xcc/0xf0 [ 119.682178][T12149] __tcp_transmit_skb+0x409e/0x5c60 [ 119.687365][T12149] __tcp_send_ack+0x701/0x840 [ 119.692018][T12149] tcp_send_ack+0x68/0x90 [ 119.696323][T12149] tcp_cleanup_rbuf+0x764/0x800 [ 119.701150][T12149] tcp_recvmsg+0x334d/0x4ff0 [ 119.705715][T12149] inet_recvmsg+0x237/0x7d0 [ 119.710205][T12149] sock_read_iter+0x5be/0x660 [ 119.714861][T12149] __vfs_read+0xa67/0xc90 [ 119.719164][T12149] vfs_read+0x359/0x6f0 [ 119.723299][T12149] ksys_read+0x265/0x430 [ 119.727516][T12149] __se_sys_read+0x92/0xb0 [ 119.731914][T12149] __x64_sys_read+0x4a/0x70 [ 119.736405][T12149] do_syscall_64+0xbc/0xf0 [ 119.740812][T12149] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.746673][T12149] [ 119.748974][T12149] Uninit was created at: [ 119.753206][T12149] kmsan_internal_poison_shadow+0x53/0x100 [ 119.759000][T12149] kmsan_slab_free+0x8d/0x100 [ 119.763661][T12149] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 119.769020][T12149] __kfree_skb_flush+0xb0/0x100 [ 119.773855][T12149] net_rx_action+0x1908/0x1950 [ 119.778599][T12149] __do_softirq+0x4a1/0x83a [ 119.783093][T12149] irq_exit+0x230/0x280 [ 119.787226][T12149] do_IRQ+0x20d/0x3a0 [ 119.791186][T12149] ret_from_intr+0x0/0x33 [ 119.795500][T12149] ===================================================== [ 119.802417][T12149] Disabling lock debugging due to kernel taint [ 119.808545][T12149] Kernel panic - not syncing: panic_on_warn set ... [ 119.815116][T12149] CPU: 1 PID: 12149 Comm: syz-fuzzer Tainted: G B 5.3.0-rc7+ #0 [ 119.824027][T12149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.834058][T12149] Call Trace: [ 119.837349][T12149] dump_stack+0x191/0x1f0 [ 119.841662][T12149] panic+0x3c9/0xc1e [ 119.845550][T12149] kmsan_report+0x2a2/0x2b0 [ 119.850034][T12149] __msan_warning+0x73/0xe0 [ 119.854542][T12149] kmem_cache_free+0x3df/0x2b70 [ 119.859380][T12149] ? kmsan_internal_set_origin+0x6a/0xb0 [ 119.864990][T12149] ? kfree_skb+0x473/0x4c0 [ 119.869386][T12149] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 119.875445][T12149] kfree_skb+0x473/0x4c0 [ 119.879677][T12149] ? packet_rcv_spkt+0x719/0x840 [ 119.884607][T12149] packet_rcv_spkt+0x719/0x840 [ 119.889358][T12149] ? packet_rcv+0x2190/0x2190 [ 119.894015][T12149] dev_queue_xmit_nit+0x1125/0x1200 [ 119.899206][T12149] dev_hard_start_xmit+0x21e/0xab0 [ 119.904305][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 119.910182][T12149] sch_direct_xmit+0x56c/0x18c0 [ 119.915023][T12149] __dev_queue_xmit+0x1e53/0x4270 [ 119.920130][T12149] dev_queue_xmit+0x4b/0x60 [ 119.924633][T12149] ip_finish_output2+0x20c6/0x25d0 [ 119.929724][T12149] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 119.935772][T12149] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 119.941743][T12149] __ip_finish_output+0xaf8/0xda0 [ 119.946753][T12149] ip_finish_output+0x2db/0x420 [ 119.951596][T12149] ip_output+0x541/0x610 [ 119.955823][T12149] ? ip_mc_finish_output+0x6d0/0x6d0 [ 119.961084][T12149] ? ip_finish_output+0x420/0x420 [ 119.966088][T12149] __ip_queue_xmit+0x1caf/0x21f0 [ 119.971004][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 119.976876][T12149] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 119.982920][T12149] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 119.988973][T12149] ip_queue_xmit+0xcc/0xf0 [ 119.993459][T12149] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 119.999071][T12149] __tcp_transmit_skb+0x409e/0x5c60 [ 120.004265][T12149] __tcp_send_ack+0x701/0x840 [ 120.008928][T12149] tcp_send_ack+0x68/0x90 [ 120.013238][T12149] tcp_cleanup_rbuf+0x764/0x800 [ 120.018082][T12149] tcp_recvmsg+0x334d/0x4ff0 [ 120.022673][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 120.028542][T12149] ? tcp_mmap+0x150/0x150 [ 120.032860][T12149] ? tcp_mmap+0x150/0x150 [ 120.037169][T12149] inet_recvmsg+0x237/0x7d0 [ 120.041670][T12149] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 120.047552][T12149] ? inet_sendpage+0x2c0/0x2c0 [ 120.052303][T12149] ? inet_sendpage+0x2c0/0x2c0 [ 120.057052][T12149] sock_read_iter+0x5be/0x660 [ 120.061713][T12149] ? kernel_sock_ip_overhead+0x340/0x340 [ 120.067323][T12149] __vfs_read+0xa67/0xc90 [ 120.071648][T12149] vfs_read+0x359/0x6f0 [ 120.075791][T12149] ksys_read+0x265/0x430 [ 120.080030][T12149] __se_sys_read+0x92/0xb0 [ 120.084438][T12149] __x64_sys_read+0x4a/0x70 [ 120.088920][T12149] do_syscall_64+0xbc/0xf0 [ 120.093321][T12149] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 120.099220][T12149] RIP: 0033:0x47fd44 [ 120.103096][T12149] Code: ff ff cc cc cc cc e8 9b 40 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 120.122701][T12149] RSP: 002b:000000c42039d710 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 120.131091][T12149] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd44 [ 120.139053][T12149] RDX: 0000000000001000 RSI: 000000c420352000 RDI: 0000000000000003 [ 120.147001][T12149] RBP: 000000c42039d760 R08: 0000000000000000 R09: 0000000000000000 [ 120.154950][T12149] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 120.162904][T12149] R13: 0000000000000002 R14: 0000000000000004 R15: ffffffffffffffff [ 120.172281][T12149] Kernel Offset: disabled [ 120.176605][T12149] Rebooting in 86400 seconds..