[ 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 '10.128.0.126' (ECDSA) to the list of known hosts. 2020/08/25 08:37:50 parsed 1 programs syzkaller login: [ 569.275418][ T3673] kmemleak: Automatic memory scanning thread ended 2020/08/25 08:37:58 executed programs: 0 [ 576.771547][ T25] audit: type=1400 audit(1598344678.455:8): avc: denied { execmem } for pid=6479 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 577.825700][ T6480] IPVS: ftp: loaded support on port[0] = 21 [ 577.874760][ T6480] chnl_net:caif_netlink_parms(): no params data found [ 577.931439][ T6480] bridge0: port 1(bridge_slave_0) entered blocking state [ 577.938717][ T6480] bridge0: port 1(bridge_slave_0) entered disabled state [ 577.945929][ T6480] device bridge_slave_0 entered promiscuous mode [ 577.954046][ T6480] bridge0: port 2(bridge_slave_1) entered blocking state [ 577.961101][ T6480] bridge0: port 2(bridge_slave_1) entered disabled state [ 577.968352][ T6480] device bridge_slave_1 entered promiscuous mode [ 577.978320][ T6480] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 577.988010][ T6480] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 578.000433][ T6480] team0: Port device team_slave_0 added [ 578.006376][ T6480] team0: Port device team_slave_1 added [ 578.015125][ T6480] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 578.022067][ T6480] 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. [ 578.047967][ T6480] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 578.058917][ T6480] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 578.065827][ T6480] 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. [ 578.091768][ T6480] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 578.106361][ T6480] device hsr_slave_0 entered promiscuous mode [ 578.112618][ T6480] device hsr_slave_1 entered promiscuous mode [ 578.139011][ T6480] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 578.146395][ T6480] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 578.153860][ T6480] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 578.161383][ T6480] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 578.173066][ T6480] bridge0: port 2(bridge_slave_1) entered blocking state [ 578.180099][ T6480] bridge0: port 2(bridge_slave_1) entered forwarding state [ 578.189314][ T6480] bridge0: port 1(bridge_slave_0) entered blocking state [ 578.196307][ T6480] bridge0: port 1(bridge_slave_0) entered forwarding state [ 578.213153][ T6480] 8021q: adding VLAN 0 to HW filter on device bond0 [ 578.221849][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 578.230519][ T3442] bridge0: port 1(bridge_slave_0) entered disabled state [ 578.238243][ T3442] bridge0: port 2(bridge_slave_1) entered disabled state [ 578.245531][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 578.254304][ T6480] 8021q: adding VLAN 0 to HW filter on device team0 [ 578.262397][ T6120] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 578.271051][ T6120] bridge0: port 1(bridge_slave_0) entered blocking state [ 578.278072][ T6120] bridge0: port 1(bridge_slave_0) entered forwarding state [ 578.291984][ T6480] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 578.302522][ T6480] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 578.313630][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 578.322021][ T6696] bridge0: port 2(bridge_slave_1) entered blocking state [ 578.329054][ T6696] bridge0: port 2(bridge_slave_1) entered forwarding state [ 578.336556][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 578.344676][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 578.352771][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 578.360719][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 578.368651][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 578.375895][ T6696] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 578.387429][ T6480] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 578.395087][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 578.402903][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 578.416320][ T6480] device veth0_vlan entered promiscuous mode [ 578.423055][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 578.431433][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 578.439324][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 578.446637][ T3442] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 578.455460][ T6480] device veth1_vlan entered promiscuous mode [ 578.463480][ T2882] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 578.475530][ T6120] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 578.483820][ T6120] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 578.493075][ T6480] device veth0_macvtap entered promiscuous mode [ 578.500818][ T6480] device veth1_macvtap entered promiscuous mode [ 578.510555][ T6480] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 578.517804][ T2882] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 578.526204][ T2882] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 578.536047][ T6480] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 578.543390][ T6120] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 578.552569][ T6480] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 578.561484][ T6480] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 578.570254][ T6480] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 578.579002][ T6480] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 579.887362][ T6120] Bluetooth: hci0: command 0x0409 tx timeout [ 581.966945][ T6120] Bluetooth: hci0: command 0x041b tx timeout [ 584.046737][ T6120] Bluetooth: hci0: command 0x040f tx timeout 2020/08/25 08:38:05 executed programs: 1 [ 586.126545][ T6458] Bluetooth: hci0: command 0x0419 tx timeout 2020/08/25 08:38:11 executed programs: 3 2020/08/25 08:38:16 executed programs: 5 2020/08/25 08:38:22 executed programs: 7 2020/08/25 08:38:28 executed programs: 9 2020/08/25 08:38:33 executed programs: 11 2020/08/25 08:38:39 executed programs: 13 2020/08/25 08:38:44 executed programs: 15 2020/08/25 08:38:50 executed programs: 17 [ 630.048684][ T6855] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) [ 636.522064][ T6855] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888118133100 (size 224): comm "syz-executor.0", pid 6815, jiffies 4294999005 (age 19.070s) hex dump (first 32 bytes): a0 b4 b2 13 81 88 ff ff a0 b4 b2 13 81 88 ff ff ................ 00 c0 83 12 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<000000003e991904>] __build_skb+0x1f/0x100 [<00000000fccebe3b>] __napi_alloc_skb+0xe5/0x140 [<000000002858e078>] napi_get_frags+0x3a/0x70 [<0000000055d0a41c>] tun_get_user+0xa43/0x1660 [<0000000045561623>] tun_chr_write_iter+0x66/0xa0 [<00000000836ffab0>] new_sync_write+0x173/0x210 [<00000000d73e9797>] vfs_write+0x21d/0x280 [<00000000536b07a2>] ksys_write+0x72/0x120 [<000000007cc0890f>] do_syscall_64+0x2d/0x70 [<00000000367e053b>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888112e97a00 (size 224): comm "syz-executor.0", pid 6833, jiffies 4294999570 (age 13.420s) hex dump (first 32 bytes): a0 4c 25 2b 81 88 ff ff a0 4c 25 2b 81 88 ff ff .L%+.....L%+.... 00 40 fd 12 81 88 ff ff 00 00 00 00 00 00 00 00 .@.............. backtrace: [<000000003e991904>] __build_skb+0x1f/0x100 [<00000000fccebe3b>] __napi_alloc_skb+0xe5/0x140 [<000000002858e078>] napi_get_frags+0x3a/0x70 [<0000000055d0a41c>] tun_get_user+0xa43/0x1660 [<0000000045561623>] tun_chr_write_iter+0x66/0xa0 [<00000000836ffab0>] new_sync_write+0x173/0x210 [<00000000d73e9797>] vfs_write+0x21d/0x280 [<00000000536b07a2>] ksys_write+0x72/0x120 [<000000007cc0890f>] do_syscall_64+0x2d/0x70 [<00000000367e053b>] entry_SYSCALL_64_after_hwframe+0x44/0xa9