[ 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 '10.128.0.166' (ECDSA) to the list of known hosts. 2020/06/18 04:56:16 parsed 1 programs syzkaller login: [ 96.461341][ T3642] kmemleak: Automatic memory scanning thread ended 2020/06/18 04:56:23 executed programs: 0 [ 103.926119][ T25] audit: type=1400 audit(1592456183.724:8): 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 [ 103.954632][ T6478] IPVS: ftp: loaded support on port[0] = 21 [ 103.979943][ T6478] chnl_net:caif_netlink_parms(): no params data found [ 104.049931][ T6478] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.057367][ T6478] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.064852][ T6478] device bridge_slave_0 entered promiscuous mode [ 104.072186][ T6478] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.079380][ T6478] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.086756][ T6478] device bridge_slave_1 entered promiscuous mode [ 104.097842][ T6478] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 104.107475][ T6478] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 104.120017][ T6478] team0: Port device team_slave_0 added [ 104.126178][ T6478] team0: Port device team_slave_1 added [ 104.135172][ T6478] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 104.142326][ 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. [ 104.170018][ T6478] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 104.181184][ T6478] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 104.188134][ 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. [ 104.214274][ T6478] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 104.268296][ T6478] device hsr_slave_0 entered promiscuous mode [ 104.287842][ T6478] device hsr_slave_1 entered promiscuous mode [ 104.357313][ T6478] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 104.388536][ T6478] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 104.418317][ T6478] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 104.488229][ T6478] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 104.532242][ T6478] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.539543][ T6478] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.546863][ T6478] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.554021][ T6478] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.570162][ T6478] 8021q: adding VLAN 0 to HW filter on device bond0 [ 104.579648][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 104.587770][ T2903] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.594923][ T2903] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.602624][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 104.611753][ T6478] 8021q: adding VLAN 0 to HW filter on device team0 [ 104.619627][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 104.628026][ T6681] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.635051][ T6681] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.647606][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 104.655745][ T2903] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.662780][ T2903] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.670279][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 104.678622][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 104.686643][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 104.696498][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 104.705638][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 104.714911][ T6478] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 104.725540][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 104.733179][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 104.742172][ T6478] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 104.752419][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 104.764568][ T6478] device veth0_vlan entered promiscuous mode [ 104.771036][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 104.779107][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 104.786751][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 104.795703][ T6478] device veth1_vlan entered promiscuous mode [ 104.807019][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 104.815197][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 104.823201][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 104.831988][ T6478] device veth0_macvtap entered promiscuous mode [ 104.839514][ T6478] device veth1_macvtap entered promiscuous mode [ 104.849490][ T6478] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.856702][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 104.865502][ T6681] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 104.874634][ T6478] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.882137][ T2903] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 104.928338][ T6700] ubi0: attaching mtd0 [ 104.932582][ T6700] ubi0: scanning is finished [ 104.938135][ T6700] ubi0: empty MTD device detected [ 104.998187][ T6700] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 105.005781][ T6700] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 105.013359][ T6700] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 105.020750][ T6700] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 105.028487][ T6700] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 105.035230][ T6700] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 105.043770][ T6700] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 585772823 [ 105.053947][ T6700] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 105.064715][ T6704] ubi0: background thread "ubi_bgt0d" started, PID 6704 2020/06/18 04:56:30 executed programs: 1 [ 110.718983][ T6711] ubi0: detaching mtd0 [ 110.723544][ T6711] ubi0: mtd0 is detached [ 110.729449][ T6711] ubi0: attaching mtd0 [ 110.733623][ T6711] ubi0: scanning is finished [ 110.767274][ T6711] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 110.774767][ T6711] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 110.782179][ T6711] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 110.789197][ T6711] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 110.796566][ T6711] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 110.803297][ T6711] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 110.811358][ T6711] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 585772823 [ 110.821253][ T6711] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 110.831293][ T6715] ubi0: background thread "ubi_bgt0d" started, PID 6715 [ 110.842538][ T6717] ubi0: detaching mtd0 [ 110.847255][ T6717] ubi0: mtd0 is detached [ 110.851726][ T6717] ubi0: attaching mtd0 [ 110.855960][ T6717] ubi0: scanning is finished [ 110.917182][ T6717] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 110.924682][ T6717] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 110.931965][ T6717] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 110.938898][ T6717] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 110.946233][ T6717] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 110.953012][ T6717] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 110.961081][ T6717] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 585772823 [ 110.970969][ T6717] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 110.980849][ T6723] ubi0: background thread "ubi_bgt0d" started, PID 6723 [ 114.586268][ T0] NOHZ: local_softirq_pending 08 [ 116.471130][ T6725] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88811ed5b620 (size 32): comm "syz-executor.0", pid 6700, jiffies 4294947771 (age 13.960s) 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 01 00 00 00 02 00 00 00 ................ backtrace: [<000000004ee6c3fb>] erase_aeb+0x25/0x110 [<00000000caf7203c>] ubi_wl_init+0x193/0x5c0 [<0000000005d81c3d>] ubi_attach+0x611/0x18ba [<000000008333a2e8>] ubi_attach_mtd_dev+0x66e/0xcc0 [<00000000f280e854>] ctrl_cdev_ioctl+0x144/0x1b0 [<00000000fc161fab>] ksys_ioctl+0xa6/0xd0 [<000000005fa3ec53>] __x64_sys_ioctl+0x1a/0x20 [<000000004edd6fe4>] do_syscall_64+0x4b/0xb0 [<0000000018243d76>] entry_SYSCALL_64_after_hwframe+0x44/0xa9