Warning: Permanently added '10.128.15.215' (ECDSA) to the list of known hosts. [ 113.734335] random: sshd: uninitialized urandom read (32 bytes read) [ 113.870771] audit: type=1400 audit(1536523885.827:7): avc: denied { map } for pid=5508 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/09/09 20:11:26 parsed 1 programs [ 114.361424] audit: type=1400 audit(1536523886.317:8): avc: denied { map } for pid=5508 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=14702 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 115.160127] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/09 20:11:28 executed programs: 0 [ 116.501876] audit: type=1400 audit(1536523888.457:9): avc: denied { map } for pid=5508 comm="syz-execprog" path="/root/syzkaller-shm456562094" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 116.538509] IPVS: ftp: loaded support on port[0] = 21 [ 116.796112] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.803196] bridge0: port 1(bridge_slave_0) entered disabled state [ 116.810645] device bridge_slave_0 entered promiscuous mode [ 116.829472] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.835919] bridge0: port 2(bridge_slave_1) entered disabled state [ 116.843251] device bridge_slave_1 entered promiscuous mode [ 116.861907] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 116.880040] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 116.930481] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 116.951949] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 117.031073] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 117.039970] team0: Port device team_slave_0 added [ 117.057836] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 117.065046] team0: Port device team_slave_1 added [ 117.082537] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 117.102049] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 117.121836] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 117.143489] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 117.293197] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.299662] bridge0: port 2(bridge_slave_1) entered forwarding state [ 117.306418] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.312817] bridge0: port 1(bridge_slave_0) entered forwarding state [ 117.841192] 8021q: adding VLAN 0 to HW filter on device bond0 [ 117.895985] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 117.949366] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 117.955511] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 117.963302] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.008566] 8021q: adding VLAN 0 to HW filter on device team0 [ 118.327530] ================================================================== [ 118.335252] BUG: KASAN: use-after-free in sock_i_ino+0x94/0xa0 [ 118.341277] Read of size 8 at addr ffff8801b9cfb5b0 by task syz-executor0/5778 [ 118.348632] [ 118.350249] CPU: 1 PID: 5778 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #9 [ 118.357331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 118.366671] Call Trace: [ 118.369248] dump_stack+0x1c4/0x2b4 [ 118.372872] ? dump_stack_print_info.cold.2+0x52/0x52 [ 118.378052] ? printk+0xa7/0xcf [ 118.381321] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 118.386083] print_address_description.cold.8+0x9/0x1ff [ 118.391431] kasan_report.cold.9+0x242/0x309 [ 118.395825] ? sock_i_ino+0x94/0xa0 [ 118.399442] __asan_report_load8_noabort+0x14/0x20 [ 118.404358] sock_i_ino+0x94/0xa0 [ 118.407840] tipc_sk_fill_sock_diag+0x39c/0xd90 [ 118.412511] ? tipc_diag_dump+0x30/0x30 [ 118.416473] ? tipc_getname+0x7f0/0x7f0 [ 118.420438] ? graph_lock+0x170/0x170 [ 118.424227] ? __lock_sock+0x203/0x350 [ 118.428108] ? find_held_lock+0x36/0x1c0 [ 118.432182] ? mark_held_locks+0xc7/0x130 [ 118.436342] ? __local_bh_enable_ip+0x160/0x260 [ 118.441013] ? __local_bh_enable_ip+0x160/0x260 [ 118.445696] ? lockdep_hardirqs_on+0x421/0x5c0 [ 118.450285] ? trace_hardirqs_on+0xbd/0x310 [ 118.454593] ? lock_release+0x970/0x970 [ 118.458570] ? lock_sock_nested+0xe2/0x120 [ 118.462822] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 118.467822] ? skb_put+0x17b/0x1e0 [ 118.471349] ? memset+0x31/0x40 [ 118.474639] ? __nlmsg_put+0x14c/0x1b0 [ 118.478520] __tipc_add_sock_diag+0x233/0x360 [ 118.483007] tipc_nl_sk_walk+0x122/0x1d0 [ 118.487075] ? tipc_sock_diag_handler_dump+0x3d0/0x3d0 [ 118.492340] tipc_diag_dump+0x24/0x30 [ 118.496128] netlink_dump+0x519/0xd50 [ 118.499928] ? netlink_broadcast+0x50/0x50 [ 118.504175] __netlink_dump_start+0x4f1/0x6f0 [ 118.508677] ? tipc_data_ready+0x3e0/0x3e0 [ 118.512903] tipc_sock_diag_handler_dump+0x28e/0x3d0 [ 118.518014] ? __tipc_diag_gen_cookie+0xc0/0xc0 [ 118.522675] ? tipc_data_ready+0x3e0/0x3e0 [ 118.526910] ? tipc_unregister_sysctl+0x20/0x20 [ 118.531590] ? tipc_ioctl+0x3a0/0x3a0 [ 118.535379] ? netlink_deliver_tap+0x355/0xf80 [ 118.539961] sock_diag_rcv_msg+0x31d/0x410 [ 118.544206] netlink_rcv_skb+0x172/0x440 [ 118.548273] ? sock_diag_bind+0x80/0x80 [ 118.552260] ? netlink_ack+0xb80/0xb80 [ 118.556140] sock_diag_rcv+0x2a/0x40 [ 118.559862] netlink_unicast+0x5a5/0x760 [ 118.563925] ? netlink_attachskb+0x9a0/0x9a0 [ 118.568328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.573885] netlink_sendmsg+0xa18/0xfc0 [ 118.577938] ? netlink_unicast+0x760/0x760 [ 118.582165] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.587689] ? security_socket_sendmsg+0x94/0xc0 [ 118.592434] ? netlink_unicast+0x760/0x760 [ 118.596660] sock_sendmsg+0xd5/0x120 [ 118.600361] ___sys_sendmsg+0x7fd/0x930 [ 118.604322] ? __local_bh_enable_ip+0x160/0x260 [ 118.609001] ? copy_msghdr_from_user+0x580/0x580 [ 118.613765] ? kasan_check_write+0x14/0x20 [ 118.617990] ? _raw_spin_unlock_bh+0x30/0x40 [ 118.622391] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 118.627831] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.633358] ? release_sock+0x1ec/0x2c0 [ 118.637322] ? __fget_light+0x2e9/0x430 [ 118.641284] ? fget_raw+0x20/0x20 [ 118.644743] ? __release_sock+0x3a0/0x3a0 [ 118.648878] ? tipc_nametbl_build_group+0x273/0x360 [ 118.653934] ? tipc_setsockopt+0x726/0xd70 [ 118.658162] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 118.663685] ? sockfd_lookup_light+0xc5/0x160 [ 118.668173] __sys_sendmsg+0x11d/0x280 [ 118.672048] ? __ia32_sys_shutdown+0x80/0x80 [ 118.676481] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 118.682052] ? fput+0x130/0x1a0 [ 118.685323] ? __x64_sys_futex+0x47f/0x6a0 [ 118.689545] ? do_syscall_64+0x9a/0x820 [ 118.693508] ? do_syscall_64+0x9a/0x820 [ 118.697500] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 118.702943] __x64_sys_sendmsg+0x78/0xb0 [ 118.706991] do_syscall_64+0x1b9/0x820 [ 118.710885] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 118.716289] ? syscall_return_slowpath+0x5e0/0x5e0 [ 118.721206] ? trace_hardirqs_on_caller+0x310/0x310 [ 118.726226] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 118.731255] ? recalc_sigpending_tsk+0x180/0x180 [ 118.735999] ? kasan_check_write+0x14/0x20 [ 118.740225] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 118.745067] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 118.750259] RIP: 0033:0x457099 [ 118.753451] Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 118.772338] RSP: 002b:00007f7275226c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 118.780032] RAX: ffffffffffffffda RBX: 00007f72752276d4 RCX: 0000000000457099 [ 118.787295] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 [ 118.794552] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 118.801817] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 118.809071] R13: 00000000004d4bc0 R14: 00000000004c910b R15: 0000000000000000 [ 118.816335] [ 118.817948] Allocated by task 5778: [ 118.821588] save_stack+0x43/0xd0 [ 118.825024] kasan_kmalloc+0xc7/0xe0 [ 118.828731] kasan_slab_alloc+0x12/0x20 [ 118.832707] kmem_cache_alloc+0x12e/0x730 [ 118.836851] sock_alloc_inode+0x1d/0x260 [ 118.840908] alloc_inode+0x63/0x190 [ 118.844536] new_inode_pseudo+0x71/0x1a0 [ 118.848599] sock_alloc+0x41/0x270 [ 118.852162] __sock_create+0x175/0x930 [ 118.856034] __sys_socket+0x106/0x260 [ 118.859819] __x64_sys_socket+0x73/0xb0 [ 118.863781] do_syscall_64+0x1b9/0x820 [ 118.867660] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 118.872830] [ 118.874469] Freed by task 5777: [ 118.877739] save_stack+0x43/0xd0 [ 118.881180] __kasan_slab_free+0x102/0x150 [ 118.885406] kasan_slab_free+0xe/0x10 [ 118.889199] kmem_cache_free+0x83/0x290 [ 118.893175] sock_destroy_inode+0x51/0x60 [ 118.897315] destroy_inode+0x159/0x200 [ 118.901188] evict+0x5e0/0x980 [ 118.904393] iput+0x679/0xa90 [ 118.907503] dentry_unlink_inode+0x461/0x5e0 [ 118.911896] __dentry_kill+0x44c/0x7a0 [ 118.915784] dentry_kill+0xc9/0x5a0 [ 118.919395] dput.part.26+0x660/0x790 [ 118.923180] dput+0x15/0x20 [ 118.926096] __fput+0x4cf/0xa30 [ 118.929380] ____fput+0x15/0x20 [ 118.932657] task_work_run+0x1e8/0x2a0 [ 118.936545] exit_to_usermode_loop+0x318/0x380 [ 118.941113] do_syscall_64+0x6be/0x820 [ 118.944989] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 118.950171] [ 118.951785] The buggy address belongs to the object at ffff8801b9cfb540 [ 118.951785] which belongs to the cache sock_inode_cache of size 984 [ 118.964862] The buggy address is located 112 bytes inside of [ 118.964862] 984-byte region [ffff8801b9cfb540, ffff8801b9cfb918) [ 118.976721] The buggy address belongs to the page: [ 118.981644] page:ffffea0006e73ec0 count:1 mapcount:0 mapping:ffff8801d948fc00 index:0xffff8801b9cfbffd [ 118.991095] flags: 0x2fffc0000000100(slab) [ 118.995382] raw: 02fffc0000000100 ffffea0006c5f7c8 ffffea0006c5f8c8 ffff8801d948fc00 [ 119.003249] raw: ffff8801b9cfbffd ffff8801b9cfb0c0 0000000100000003 0000000000000000 [ 119.011111] page dumped because: kasan: bad access detected [ 119.016809] [ 119.018434] Memory state around the buggy address: [ 119.023363] ffff8801b9cfb480: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc [ 119.030721] ffff8801b9cfb500: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 119.038080] >ffff8801b9cfb580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 119.045422] ^ [ 119.050335] ffff8801b9cfb600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 119.057690] ffff8801b9cfb680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 119.065029] ================================================================== [ 119.072400] Disabling lock debugging due to kernel taint [ 119.077886] Kernel panic - not syncing: panic_on_warn set ... [ 119.077886] [ 119.085794] CPU: 1 PID: 5778 Comm: syz-executor0 Tainted: G B 4.19.0-rc2+ #9 [ 119.094280] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.103635] Call Trace: [ 119.106224] dump_stack+0x1c4/0x2b4 [ 119.109837] ? dump_stack_print_info.cold.2+0x52/0x52 [ 119.115021] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 119.119768] panic+0x238/0x4e7 [ 119.122946] ? add_taint.cold.5+0x16/0x16 [ 119.127082] ? trace_hardirqs_on+0x9a/0x310 [ 119.131391] ? trace_hardirqs_on+0xb4/0x310 [ 119.135712] ? trace_hardirqs_on+0xb4/0x310 [ 119.140023] kasan_end_report+0x47/0x4f [ 119.144027] kasan_report.cold.9+0x76/0x309 [ 119.148359] ? sock_i_ino+0x94/0xa0 [ 119.152025] __asan_report_load8_noabort+0x14/0x20 [ 119.156963] sock_i_ino+0x94/0xa0 [ 119.160402] tipc_sk_fill_sock_diag+0x39c/0xd90 [ 119.165082] ? tipc_diag_dump+0x30/0x30 [ 119.169042] ? tipc_getname+0x7f0/0x7f0 [ 119.173004] ? graph_lock+0x170/0x170 [ 119.176790] ? __lock_sock+0x203/0x350 [ 119.180665] ? find_held_lock+0x36/0x1c0 [ 119.184718] ? mark_held_locks+0xc7/0x130 [ 119.188859] ? __local_bh_enable_ip+0x160/0x260 [ 119.193545] ? __local_bh_enable_ip+0x160/0x260 [ 119.198197] ? lockdep_hardirqs_on+0x421/0x5c0 [ 119.202766] ? trace_hardirqs_on+0xbd/0x310 [ 119.207076] ? lock_release+0x970/0x970 [ 119.211063] ? lock_sock_nested+0xe2/0x120 [ 119.215286] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 119.220298] ? skb_put+0x17b/0x1e0 [ 119.223832] ? memset+0x31/0x40 [ 119.227118] ? __nlmsg_put+0x14c/0x1b0 [ 119.231008] __tipc_add_sock_diag+0x233/0x360 [ 119.235493] tipc_nl_sk_walk+0x122/0x1d0 [ 119.239540] ? tipc_sock_diag_handler_dump+0x3d0/0x3d0 [ 119.244802] tipc_diag_dump+0x24/0x30 [ 119.248590] netlink_dump+0x519/0xd50 [ 119.252396] ? netlink_broadcast+0x50/0x50 [ 119.256673] __netlink_dump_start+0x4f1/0x6f0 [ 119.261186] ? tipc_data_ready+0x3e0/0x3e0 [ 119.265420] tipc_sock_diag_handler_dump+0x28e/0x3d0 [ 119.270541] ? __tipc_diag_gen_cookie+0xc0/0xc0 [ 119.275197] ? tipc_data_ready+0x3e0/0x3e0 [ 119.279414] ? tipc_unregister_sysctl+0x20/0x20 [ 119.284067] ? tipc_ioctl+0x3a0/0x3a0 [ 119.287874] ? netlink_deliver_tap+0x355/0xf80 [ 119.292443] sock_diag_rcv_msg+0x31d/0x410 [ 119.296665] netlink_rcv_skb+0x172/0x440 [ 119.300731] ? sock_diag_bind+0x80/0x80 [ 119.304704] ? netlink_ack+0xb80/0xb80 [ 119.308581] sock_diag_rcv+0x2a/0x40 [ 119.312279] netlink_unicast+0x5a5/0x760 [ 119.316327] ? netlink_attachskb+0x9a0/0x9a0 [ 119.320729] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.326266] netlink_sendmsg+0xa18/0xfc0 [ 119.330312] ? netlink_unicast+0x760/0x760 [ 119.334537] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.340058] ? security_socket_sendmsg+0x94/0xc0 [ 119.344800] ? netlink_unicast+0x760/0x760 [ 119.349022] sock_sendmsg+0xd5/0x120 [ 119.352724] ___sys_sendmsg+0x7fd/0x930 [ 119.356686] ? __local_bh_enable_ip+0x160/0x260 [ 119.361358] ? copy_msghdr_from_user+0x580/0x580 [ 119.366107] ? kasan_check_write+0x14/0x20 [ 119.370336] ? _raw_spin_unlock_bh+0x30/0x40 [ 119.374747] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 119.380184] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.385704] ? release_sock+0x1ec/0x2c0 [ 119.389682] ? __fget_light+0x2e9/0x430 [ 119.393650] ? fget_raw+0x20/0x20 [ 119.397110] ? __release_sock+0x3a0/0x3a0 [ 119.401255] ? tipc_nametbl_build_group+0x273/0x360 [ 119.406291] ? tipc_setsockopt+0x726/0xd70 [ 119.410515] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 119.416035] ? sockfd_lookup_light+0xc5/0x160 [ 119.420519] __sys_sendmsg+0x11d/0x280 [ 119.424396] ? __ia32_sys_shutdown+0x80/0x80 [ 119.428787] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 119.434314] ? fput+0x130/0x1a0 [ 119.437597] ? __x64_sys_futex+0x47f/0x6a0 [ 119.441853] ? do_syscall_64+0x9a/0x820 [ 119.445829] ? do_syscall_64+0x9a/0x820 [ 119.449794] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 119.455233] __x64_sys_sendmsg+0x78/0xb0 [ 119.459279] do_syscall_64+0x1b9/0x820 [ 119.463159] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 119.468511] ? syscall_return_slowpath+0x5e0/0x5e0 [ 119.473440] ? trace_hardirqs_on_caller+0x310/0x310 [ 119.478450] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 119.483450] ? recalc_sigpending_tsk+0x180/0x180 [ 119.488202] ? kasan_check_write+0x14/0x20 [ 119.492451] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 119.497284] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 119.502509] RIP: 0033:0x457099 [ 119.505693] Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 119.524589] RSP: 002b:00007f7275226c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 119.532320] RAX: ffffffffffffffda RBX: 00007f72752276d4 RCX: 0000000000457099 [ 119.539585] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 [ 119.546853] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 119.554143] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 119.561409] R13: 00000000004d4bc0 R14: 00000000004c910b R15: 0000000000000000 [ 119.569038] Dumping ftrace buffer: [ 119.572574] (ftrace buffer empty) [ 119.576983] Kernel Offset: disabled [ 119.580636] Rebooting in 86400 seconds..