Warning: Permanently added '10.128.0.100' (ECDSA) to the list of known hosts. [ 43.514456] random: sshd: uninitialized urandom read (32 bytes read) [ 43.634150] audit: type=1400 audit(1580751921.156:36): avc: denied { map } for pid=7336 comm="syz-executor615" path="/root/syz-executor615357658" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 43.950896] IPVS: ftp: loaded support on port[0] = 21 [ 44.775927] chnl_net:caif_netlink_parms(): no params data found [ 44.818363] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.825254] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.832616] device bridge_slave_0 entered promiscuous mode [ 44.840654] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.847098] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.854236] device bridge_slave_1 entered promiscuous mode [ 44.868651] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 44.877618] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 44.893724] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 44.901158] team0: Port device team_slave_0 added [ 44.906704] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 44.914009] team0: Port device team_slave_1 added [ 44.926989] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.933375] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 44.959149] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.970130] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.976685] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 45.002017] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.012442] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 45.020149] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 45.072187] device hsr_slave_0 entered promiscuous mode [ 45.120477] device hsr_slave_1 entered promiscuous mode [ 45.170992] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 45.178196] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 45.229867] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.237219] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.244796] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.252500] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.285770] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 45.293579] 8021q: adding VLAN 0 to HW filter on device bond0 [ 45.302247] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 45.312712] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 45.331476] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.338518] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.348380] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 45.354627] 8021q: adding VLAN 0 to HW filter on device team0 [ 45.363313] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 45.370974] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.377312] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.386229] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 45.398745] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.405247] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.420766] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 45.428415] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 45.436416] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 45.446002] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 45.455566] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 45.464340] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 45.471179] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 45.484355] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 45.492443] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 45.499340] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 45.510704] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 45.571060] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 45.581098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 45.612008] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 45.619023] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 45.625718] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 45.634751] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 45.643283] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 45.650945] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 45.659428] device veth0_vlan entered promiscuous mode [ 45.668206] device veth1_vlan entered promiscuous mode [ 45.674528] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 45.682855] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 45.694824] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 45.704124] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 45.711607] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 45.718834] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 45.728268] device veth0_macvtap entered promiscuous mode [ 45.734725] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 45.743417] device veth1_macvtap entered promiscuous mode [ 45.752188] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 45.762097] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 45.771288] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 45.788848] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 45.797207] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 45.804951] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 45.816256] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 45.824670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 45.835280] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 45.842387] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 45.849438] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 45.858089] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program [ 46.050593] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.062781] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.075865] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.085654] ip6_tables: ip6tables: counters copy to user failed while replacing table executing program executing program [ 46.098677] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.108814] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.123943] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.134873] ip6_tables: ip6tables: counters copy to user failed while replacing table executing program executing program executing program executing program executing program executing program executing program [ 46.148645] ip6_tables: ip6tables: counters copy to user failed while replacing table [ 46.158441] ip6_tables: ip6tables: counters copy to user failed while replacing table executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.562887] ================================================================== [ 46.570377] BUG: KASAN: slab-out-of-bounds in u32_mt+0x55c/0x5c0 [ 46.576540] Read of size 4 at addr ffff88809417b940 by task syz-executor615/7562 [ 46.584065] [ 46.585841] CPU: 0 PID: 7562 Comm: syz-executor615 Not tainted 4.14.169-syzkaller #0 [ 46.594391] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.604072] Call Trace: [ 46.606762] dump_stack+0x142/0x197 [ 46.610404] ? u32_mt+0x55c/0x5c0 [ 46.614135] print_address_description.cold+0x7c/0x1dc [ 46.619538] ? u32_mt+0x55c/0x5c0 [ 46.623086] kasan_report.cold+0xa9/0x2af [ 46.627570] __asan_report_load4_noabort+0x14/0x20 [ 46.632591] u32_mt+0x55c/0x5c0 [ 46.635875] ? time_mt_check.cold+0x47/0x47 [ 46.640758] ? check_preemption_disabled+0x3c/0x250 [ 46.645910] ip6t_do_table+0x813/0x1860 [ 46.654852] ? __lock_acquire+0x5f7/0x4620 [ 46.659187] ? ip6_cork_release.isra.0+0x219/0x2c0 [ 46.664316] ? ip6t_error+0x30/0x30 [ 46.668238] ip6table_filter_hook+0x65/0x80 [ 46.672568] nf_hook_slow+0xaf/0x1b0 [ 46.676285] __ip6_local_out+0x3e5/0x890 [ 46.680351] ? dst_output+0x140/0x140 [ 46.684185] ? ip6_dst_hoplimit+0x360/0x360 [ 46.688531] ? rt6_check_expired+0xa5/0x160 [ 46.692857] ip6_local_out+0x29/0x170 [ 46.697189] ip6_send_skb+0xa2/0x330 [ 46.700912] ? csum_ipv6_magic+0x20/0x80 [ 46.704972] udp_v6_send_skb+0x50b/0xee0 [ 46.709038] udpv6_sendmsg+0x1eb9/0x2610 [ 46.713092] ? ip_reply_glue_bits+0xb0/0xb0 [ 46.717413] ? udp6_unicast_rcv_skb.isra.0+0x2c0/0x2c0 [ 46.722688] ? speculation_ctrl_update_current+0x50/0x50 [ 46.728381] ? sock_has_perm+0x1ed/0x280 [ 46.732562] ? selinux_tun_dev_create+0xc0/0xc0 [ 46.737322] ? __lock_is_held+0xb6/0x140 [ 46.741376] inet_sendmsg+0x122/0x500 [ 46.746006] ? inet_sendmsg+0x122/0x500 [ 46.749998] ? inet_recvmsg+0x500/0x500 [ 46.753977] sock_sendmsg+0xce/0x110 [ 46.757735] kernel_sendmsg+0x44/0x50 [ 46.761529] sock_no_sendpage+0x107/0x130 [ 46.765776] ? sock_kzfree_s+0x50/0x50 [ 46.769711] ? pipe_lock+0x63/0x80 [ 46.773248] kernel_sendpage+0x92/0xf0 [ 46.777535] ? sock_kzfree_s+0x50/0x50 [ 46.781879] sock_sendpage+0x8b/0xc0 [ 46.786132] ? kernel_sendpage+0xf0/0xf0 [ 46.790200] pipe_to_sendpage+0x242/0x340 [ 46.794866] ? direct_splice_actor+0x190/0x190 [ 46.799489] __splice_from_pipe+0x348/0x780 [ 46.803921] ? direct_splice_actor+0x190/0x190 [ 46.808532] ? direct_splice_actor+0x190/0x190 [ 46.813150] splice_from_pipe+0xf0/0x150 [ 46.817220] ? splice_shrink_spd+0xb0/0xb0 [ 46.821480] ? security_file_permission+0x89/0x1f0 [ 46.826424] generic_splice_sendpage+0x3c/0x50 [ 46.831036] ? splice_from_pipe+0x150/0x150 [ 46.835368] SyS_splice+0xd92/0x1430 [ 46.839098] ? SyS_futex+0x222/0x310 [ 46.842836] ? compat_SyS_vmsplice+0x250/0x250 [ 46.847409] ? do_syscall_64+0x53/0x640 [ 46.851406] ? compat_SyS_vmsplice+0x250/0x250 [ 46.856070] do_syscall_64+0x1e8/0x640 [ 46.859961] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.864808] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.870088] RIP: 0033:0x448669 [ 46.873408] RSP: 002b:00007fdd30a5cd98 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 46.881405] RAX: ffffffffffffffda RBX: 00000000006dec68 RCX: 0000000000448669 [ 46.889388] RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 [ 46.896685] RBP: 00000000006dec60 R08: 000000011fffffff R09: 0000000000000000 [ 46.904486] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec6c [ 46.911834] R13: 0000000020001440 R14: 00000000004b0c00 R15: 0000000000000000 [ 46.919113] [ 46.920732] Allocated by task 7559: [ 46.925151] save_stack_trace+0x16/0x20 [ 46.929132] save_stack+0x45/0xd0 [ 46.932604] kasan_kmalloc+0xce/0xf0 [ 46.936398] __kmalloc_node+0x51/0x80 [ 46.940200] kvmalloc_node+0x4e/0xe0 [ 46.943907] xt_alloc_table_info+0x71/0xf0 [ 46.949371] do_ip6t_set_ctl+0x1eb/0x3f4 [ 46.953440] nf_setsockopt+0x67/0xc0 [ 46.957143] ipv6_setsockopt+0x105/0x130 [ 46.961199] tcp_setsockopt+0x84/0xd0 [ 46.964984] sock_common_setsockopt+0x94/0xd0 [ 46.969521] SyS_setsockopt+0x13c/0x210 [ 46.973616] do_syscall_64+0x1e8/0x640 [ 46.977523] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.982711] [ 46.984332] Freed by task 5827: [ 46.987628] save_stack_trace+0x16/0x20 [ 46.991602] save_stack+0x45/0xd0 [ 46.995059] kasan_slab_free+0x75/0xc0 [ 46.998950] kfree+0xcc/0x270 [ 47.002052] kfree_link+0x16/0x20 [ 47.005501] walk_component+0x3db/0x1d00 [ 47.009636] link_path_walk+0x4d0/0x10a0 [ 47.013751] path_openat+0x190/0x3db0 [ 47.017986] do_filp_open+0x18e/0x250 [ 47.021983] do_sys_open+0x2c5/0x430 [ 47.025863] SyS_open+0x2d/0x40 [ 47.030084] do_syscall_64+0x1e8/0x640 [ 47.034349] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 47.039528] [ 47.041146] The buggy address belongs to the object at ffff88809417adc0 [ 47.041146] which belongs to the cache kmalloc-4096 of size 4096 [ 47.054079] The buggy address is located 2944 bytes inside of [ 47.054079] 4096-byte region [ffff88809417adc0, ffff88809417bdc0) [ 47.067096] The buggy address belongs to the page: [ 47.072024] page:ffffea0002505e80 count:1 mapcount:0 mapping:ffff88809417adc0 index:0x0 compound_mapcount: 0 [ 47.082172] flags: 0xfffe0000008100(slab|head) [ 47.088242] raw: 00fffe0000008100 ffff88809417adc0 0000000000000000 0000000100000001 [ 47.096251] raw: ffffea0001e88b20 ffffea00024f36a0 ffff8880aa800dc0 0000000000000000 [ 47.104150] page dumped because: kasan: bad access detected [ 47.109886] [ 47.111518] Memory state around the buggy address: [ 47.117806] ffff88809417b800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 47.126316] ffff88809417b880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 47.134024] >ffff88809417b900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 47.141489] ^ [ 47.147162] ffff88809417b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 47.154568] ffff88809417ba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 47.161925] ================================================================== [ 47.169714] Disabling lock debugging due to kernel taint [ 47.175219] Kernel panic - not syncing: panic_on_warn set ... [ 47.175219] [ 47.183105] CPU: 0 PID: 7562 Comm: syz-executor615 Tainted: G B 4.14.169-syzkaller #0 [ 47.192283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.201643] Call Trace: [ 47.204233] dump_stack+0x142/0x197 [ 47.207849] ? u32_mt+0x55c/0x5c0 [ 47.211325] panic+0x1f9/0x42d [ 47.214536] ? add_taint.cold+0x16/0x16 [ 47.218520] kasan_end_report+0x47/0x4f [ 47.222808] kasan_report.cold+0x130/0x2af [ 47.227050] __asan_report_load4_noabort+0x14/0x20 [ 47.232078] u32_mt+0x55c/0x5c0 [ 47.235347] ? time_mt_check.cold+0x47/0x47 [ 47.240100] ? check_preemption_disabled+0x3c/0x250 [ 47.245442] ip6t_do_table+0x813/0x1860 [ 47.249756] ? __lock_acquire+0x5f7/0x4620 [ 47.254182] ? ip6_cork_release.isra.0+0x219/0x2c0 [ 47.259116] ? ip6t_error+0x30/0x30 [ 47.262753] ip6table_filter_hook+0x65/0x80 [ 47.267085] nf_hook_slow+0xaf/0x1b0 [ 47.270827] __ip6_local_out+0x3e5/0x890 [ 47.274880] ? dst_output+0x140/0x140 [ 47.278715] ? ip6_dst_hoplimit+0x360/0x360 [ 47.283023] ? rt6_check_expired+0xa5/0x160 [ 47.287474] ip6_local_out+0x29/0x170 [ 47.291273] ip6_send_skb+0xa2/0x330 [ 47.294986] ? csum_ipv6_magic+0x20/0x80 [ 47.299035] udp_v6_send_skb+0x50b/0xee0 [ 47.303177] udpv6_sendmsg+0x1eb9/0x2610 [ 47.307249] ? ip_reply_glue_bits+0xb0/0xb0 [ 47.311564] ? udp6_unicast_rcv_skb.isra.0+0x2c0/0x2c0 [ 47.316845] ? speculation_ctrl_update_current+0x50/0x50 [ 47.322294] ? sock_has_perm+0x1ed/0x280 [ 47.326363] ? selinux_tun_dev_create+0xc0/0xc0 [ 47.331036] ? __lock_is_held+0xb6/0x140 [ 47.335098] inet_sendmsg+0x122/0x500 [ 47.338898] ? inet_sendmsg+0x122/0x500 [ 47.342863] ? inet_recvmsg+0x500/0x500 [ 47.346827] sock_sendmsg+0xce/0x110 [ 47.350635] kernel_sendmsg+0x44/0x50 [ 47.354459] sock_no_sendpage+0x107/0x130 [ 47.358596] ? sock_kzfree_s+0x50/0x50 [ 47.362597] ? pipe_lock+0x63/0x80 [ 47.366136] kernel_sendpage+0x92/0xf0 [ 47.370361] ? sock_kzfree_s+0x50/0x50 [ 47.374249] sock_sendpage+0x8b/0xc0 [ 47.377961] ? kernel_sendpage+0xf0/0xf0 [ 47.382015] pipe_to_sendpage+0x242/0x340 [ 47.386165] ? direct_splice_actor+0x190/0x190 [ 47.390734] __splice_from_pipe+0x348/0x780 [ 47.395045] ? direct_splice_actor+0x190/0x190 [ 47.399612] ? direct_splice_actor+0x190/0x190 [ 47.404209] splice_from_pipe+0xf0/0x150 [ 47.408266] ? splice_shrink_spd+0xb0/0xb0 [ 47.412498] ? security_file_permission+0x89/0x1f0 [ 47.417444] generic_splice_sendpage+0x3c/0x50 [ 47.422127] ? splice_from_pipe+0x150/0x150 [ 47.426444] SyS_splice+0xd92/0x1430 [ 47.430158] ? SyS_futex+0x222/0x310 [ 47.433863] ? compat_SyS_vmsplice+0x250/0x250 [ 47.438431] ? do_syscall_64+0x53/0x640 [ 47.442412] ? compat_SyS_vmsplice+0x250/0x250 [ 47.447002] do_syscall_64+0x1e8/0x640 [ 47.450881] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.455846] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 47.461051] RIP: 0033:0x448669 [ 47.464316] RSP: 002b:00007fdd30a5cd98 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 47.472030] RAX: ffffffffffffffda RBX: 00000000006dec68 RCX: 0000000000448669 [ 47.479655] RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 [ 47.486966] RBP: 00000000006dec60 R08: 000000011fffffff R09: 0000000000000000 [ 47.494241] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec6c [ 47.501550] R13: 0000000020001440 R14: 00000000004b0c00 R15: 0000000000000000 [ 47.510008] Kernel Offset: disabled [ 47.513650] Rebooting in 86400 seconds..