[ 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 '10.128.15.194' (ECDSA) to the list of known hosts. 2020/04/03 21:27:02 parsed 1 programs syzkaller login: [ 136.985697][ T3826] kmemleak: Automatic memory scanning thread ended 2020/04/03 21:27:11 executed programs: 0 [ 144.522827][ T26] audit: type=1400 audit(1585949231.388:8): avc: denied { execmem } for pid=6631 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 144.536016][ T6632] IPVS: ftp: loaded support on port[0] = 21 [ 144.566930][ T6632] chnl_net:caif_netlink_parms(): no params data found [ 144.632580][ T6632] bridge0: port 1(bridge_slave_0) entered blocking state [ 144.639902][ T6632] bridge0: port 1(bridge_slave_0) entered disabled state [ 144.647208][ T6632] device bridge_slave_0 entered promiscuous mode [ 144.654281][ T6632] bridge0: port 2(bridge_slave_1) entered blocking state [ 144.661335][ T6632] bridge0: port 2(bridge_slave_1) entered disabled state [ 144.668653][ T6632] device bridge_slave_1 entered promiscuous mode [ 144.678890][ T6632] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 144.688694][ T6632] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 144.700951][ T6632] team0: Port device team_slave_0 added [ 144.706967][ T6632] team0: Port device team_slave_1 added [ 144.715516][ T6632] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 144.723108][ T6632] 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. [ 144.749220][ T6632] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 144.760215][ T6632] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 144.767144][ T6632] 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. [ 144.793011][ T6632] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 144.869854][ T6632] device hsr_slave_0 entered promiscuous mode [ 144.919102][ T6632] device hsr_slave_1 entered promiscuous mode [ 145.008139][ T6632] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 145.039816][ T6632] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 145.099793][ T6632] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 145.149784][ T6632] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 145.193759][ T6632] bridge0: port 2(bridge_slave_1) entered blocking state [ 145.200812][ T6632] bridge0: port 2(bridge_slave_1) entered forwarding state [ 145.208013][ T6632] bridge0: port 1(bridge_slave_0) entered blocking state [ 145.215033][ T6632] bridge0: port 1(bridge_slave_0) entered forwarding state [ 145.231425][ T6632] 8021q: adding VLAN 0 to HW filter on device bond0 [ 145.239944][ T3947] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 145.247367][ T3947] bridge0: port 1(bridge_slave_0) entered disabled state [ 145.254851][ T3947] bridge0: port 2(bridge_slave_1) entered disabled state [ 145.262867][ T3947] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 145.271668][ T6632] 8021q: adding VLAN 0 to HW filter on device team0 [ 145.280090][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 145.288342][ T3034] bridge0: port 1(bridge_slave_0) entered blocking state [ 145.295490][ T3034] bridge0: port 1(bridge_slave_0) entered forwarding state [ 145.304058][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.312599][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 145.319634][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 145.330636][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 145.338746][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 145.347492][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 145.356942][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 145.366119][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 145.375177][ T6632] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 145.385218][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 145.392996][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 145.402127][ T6632] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 145.412721][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 145.423949][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 145.432038][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 145.439605][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 145.447894][ T6632] device veth0_vlan entered promiscuous mode [ 145.455705][ T6632] device veth1_vlan entered promiscuous mode [ 145.465833][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 145.473739][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 145.481553][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 145.490603][ T6632] device veth0_macvtap entered promiscuous mode [ 145.497833][ T6632] device veth1_macvtap entered promiscuous mode [ 145.507231][ T6632] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 145.514555][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 145.522940][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 145.532212][ T6632] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 145.539675][ T3034] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 145.600995][ T6854] ubi0: attaching mtd0 [ 145.605269][ T6854] ubi0: scanning is finished [ 145.610453][ T6854] ubi0: empty MTD device detected [ 145.639727][ T6854] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 145.647256][ T6854] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 145.655011][ T6854] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 145.662155][ T6854] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 145.669716][ T6854] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 145.676461][ T6854] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 145.684469][ T6854] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 3037678111 [ 145.694459][ T6854] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 145.704480][ T6858] ubi0: background thread "ubi_bgt0d" started, PID 6858 [ 145.711546][ T6860] ubi0: detaching mtd0 [ 145.716240][ T6860] ubi0: mtd0 is detached 2020/04/03 21:27:18 executed programs: 1 [ 151.403837][ T6867] ubi0: attaching mtd0 [ 151.408156][ T6867] ubi0: scanning is finished [ 151.449528][ T6867] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 151.457045][ T6867] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 151.464729][ T6867] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 151.471835][ T6867] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 151.479394][ T6867] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 151.486140][ T6867] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 151.494164][ T6867] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 3037678111 [ 151.504141][ T6867] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 151.514043][ T6869] ubi0: background thread "ubi_bgt0d" started, PID 6869 [ 151.521031][ T6871] ubi0: detaching mtd0 [ 151.525514][ T6871] ubi0: mtd0 is detached [ 151.538855][ T6875] ubi0: attaching mtd0 [ 151.543153][ T6875] ubi0: scanning is finished [ 151.578814][ T6875] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 151.586397][ T6875] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 151.594806][ T6875] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 151.601945][ T6875] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 151.609368][ T6875] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 151.616108][ T6875] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 151.624093][ T6875] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 3037678111 [ 151.634312][ T6875] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 151.644271][ T6878] ubi0: background thread "ubi_bgt0d" started, PID 6878 [ 151.649097][ T6881] ubi0: detaching mtd0 [ 151.655600][ T6881] ubi0: mtd0 is detached [ 152.914156][ T6884] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127d025a0 (size 32): comm "syz-executor.0", pid 6854, jiffies 4294951829 (age 13.970s) hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........"....... 00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................ backtrace: [<000000006d900b19>] erase_aeb+0x25/0x110 [<00000000cc8509af>] ubi_wl_init+0x193/0x5c0 [<000000004a51bf60>] ubi_attach+0x611/0x18ba [<0000000019ef916b>] ubi_attach_mtd_dev+0x665/0xcc0 [<00000000fd985df3>] ctrl_cdev_ioctl+0x144/0x1b0 [<00000000cea106b8>] ksys_ioctl+0xa6/0xd0 [<00000000a9539ab2>] __x64_sys_ioctl+0x1a/0x20 [<000000006bf9099b>] do_syscall_64+0x6e/0x220 [<0000000051efe97b>] entry_SYSCALL_64_after_hwframe+0x44/0xa9