[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.129' (ECDSA) to the list of known hosts. 2020/07/29 03:21:09 parsed 1 programs syzkaller login: [ 159.904592][ T3643] kmemleak: Automatic memory scanning thread ended 2020/07/29 03:21:17 executed programs: 0 [ 167.183471][ T25] audit: type=1400 audit(1595992877.071:8): avc: denied { execmem } for pid=6477 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 167.197271][ T6478] IPVS: ftp: loaded support on port[0] = 21 [ 167.233518][ T6478] chnl_net:caif_netlink_parms(): no params data found [ 167.275749][ T6478] bridge0: port 1(bridge_slave_0) entered blocking state [ 167.283034][ T6478] bridge0: port 1(bridge_slave_0) entered disabled state [ 167.290601][ T6478] device bridge_slave_0 entered promiscuous mode [ 167.297781][ T6478] bridge0: port 2(bridge_slave_1) entered blocking state [ 167.304804][ T6478] bridge0: port 2(bridge_slave_1) entered disabled state [ 167.312577][ T6478] device bridge_slave_1 entered promiscuous mode [ 167.322562][ T6478] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 167.332698][ T6478] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 167.346476][ T6478] team0: Port device team_slave_0 added [ 167.353401][ T6478] team0: Port device team_slave_1 added [ 167.362527][ T6478] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 167.369736][ T6478] 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. [ 167.395939][ T6478] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 167.407058][ T6478] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 167.413973][ T6478] 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. [ 167.440143][ T6478] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 167.477180][ T6478] device hsr_slave_0 entered promiscuous mode [ 167.516515][ T6478] device hsr_slave_1 entered promiscuous mode [ 167.577857][ T6478] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 167.607371][ T6478] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 167.647251][ T6478] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 167.697161][ T6478] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 167.731317][ T6478] bridge0: port 2(bridge_slave_1) entered blocking state [ 167.738499][ T6478] bridge0: port 2(bridge_slave_1) entered forwarding state [ 167.745758][ T6478] bridge0: port 1(bridge_slave_0) entered blocking state [ 167.752781][ T6478] bridge0: port 1(bridge_slave_0) entered forwarding state [ 167.769342][ T6478] 8021q: adding VLAN 0 to HW filter on device bond0 [ 167.778670][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 167.786397][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 167.793665][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 167.801377][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 167.810064][ T6478] 8021q: adding VLAN 0 to HW filter on device team0 [ 167.817953][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 167.826049][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 167.833104][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 167.846701][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 167.854841][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 167.861894][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 167.869672][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 167.877968][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 167.886005][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 167.894691][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 167.903426][ T6478] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 167.914054][ T6478] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 167.921538][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 167.933894][ T6478] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 167.941097][ T3414] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 167.948523][ T3414] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 167.959305][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 167.971318][ T6478] device veth0_vlan entered promiscuous mode [ 167.977638][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 167.985584][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 167.993253][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 168.002504][ T6478] device veth1_vlan entered promiscuous mode [ 168.009023][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 168.021898][ T6478] device veth0_macvtap entered promiscuous mode [ 168.028494][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 168.036192][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 168.044823][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 168.053474][ T6478] device veth1_macvtap entered promiscuous mode [ 168.063158][ T6478] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 168.070435][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 168.079919][ T6478] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 168.087265][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2020/07/29 03:21:23 executed programs: 1 2020/07/29 03:21:29 executed programs: 3 2020/07/29 03:21:34 executed programs: 5 2020/07/29 03:21:40 executed programs: 7 2020/07/29 03:21:45 executed programs: 9 [ 197.806594][ T0] NOHZ: local_softirq_pending 08 2020/07/29 03:21:51 executed programs: 11 2020/07/29 03:21:56 executed programs: 13 2020/07/29 03:22:02 executed programs: 15 2020/07/29 03:22:08 executed programs: 17 2020/07/29 03:22:13 executed programs: 19 2020/07/29 03:22:19 executed programs: 21 2020/07/29 03:22:24 executed programs: 23 [ 236.033507][ T6859] kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak) [ 238.766454][ T0] NOHZ: local_softirq_pending 08 BUG: memory leak unreferenced object 0xffff888113caa500 (size 224): comm "syz-executor.0", pid 6842, jiffies 4294960205 (age 13.090s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 40 bd 19 81 88 ff ff .........@...... backtrace: [<000000006017e4c6>] __alloc_skb+0x5e/0x250 [<00000000015a867c>] sock_wmalloc+0x4a/0x80 [<000000003eac563a>] pppoe_sendmsg+0xba/0x250 [<00000000240b7a5e>] sock_sendmsg+0x4c/0x60 [<00000000e1f33329>] ____sys_sendmsg+0x118/0x2f0 [<00000000c27ebe94>] ___sys_sendmsg+0x81/0xc0 [<00000000ae9e15dc>] __sys_sendmmsg+0xda/0x230 [<00000000931cc530>] __x64_sys_sendmmsg+0x24/0x30 [<00000000c79fad24>] do_syscall_64+0x4c/0xe0 [<000000002b2d623e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888113cb2600 (size 512): comm "syz-executor.0", pid 6842, jiffies 4294960205 (age 13.090s) hex dump (first 32 bytes): 23 32 aa aa aa aa aa 34 aa aa aa aa aa 34 88 64 #2.....4.....4.d 11 00 07 00 00 00 70 72 6f 66 69 6c 65 3d 30 20 ......profile=0 backtrace: [<00000000436c965e>] __alloc_skb+0x99/0x250 [<00000000015a867c>] sock_wmalloc+0x4a/0x80 [<000000003eac563a>] pppoe_sendmsg+0xba/0x250 [<00000000240b7a5e>] sock_sendmsg+0x4c/0x60 [<00000000e1f33329>] ____sys_sendmsg+0x118/0x2f0 [<00000000c27ebe94>] ___sys_sendmsg+0x81/0xc0 [<00000000ae9e15dc>] __sys_sendmmsg+0xda/0x230 [<00000000931cc530>] __x64_sys_sendmmsg+0x24/0x30 [<00000000c79fad24>] do_syscall_64+0x4c/0xe0 [<000000002b2d623e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9