[ 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 '10.128.0.206' (ECDSA) to the list of known hosts. 2020/03/27 00:40:44 parsed 1 programs syzkaller login: [ 75.409333][ T3825] kmemleak: Automatic memory scanning thread ended 2020/03/27 00:40:54 executed programs: 0 [ 82.861971][ T25] audit: type=1400 audit(1585269654.102:8): avc: denied { execmem } for pid=6638 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 82.869702][ T6639] IPVS: ftp: loaded support on port[0] = 21 [ 82.906573][ T6639] chnl_net:caif_netlink_parms(): no params data found [ 82.942728][ T6639] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.950708][ T6639] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.958434][ T6639] device bridge_slave_0 entered promiscuous mode [ 82.966547][ T6639] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.976276][ T6639] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.983881][ T6639] device bridge_slave_1 entered promiscuous mode [ 82.994010][ T6639] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.003575][ T6639] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.015783][ T6639] team0: Port device team_slave_0 added [ 83.021995][ T6639] team0: Port device team_slave_1 added [ 83.030493][ T6639] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.037634][ T6639] 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. [ 83.063812][ T6639] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.074922][ T6639] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.082067][ T6639] 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. [ 83.108141][ T6639] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.147573][ T6639] device hsr_slave_0 entered promiscuous mode [ 83.186851][ T6639] device hsr_slave_1 entered promiscuous mode [ 83.245697][ T6639] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.297595][ T6639] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.347566][ T6639] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.377509][ T6639] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.441365][ T6639] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.448448][ T6639] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.455645][ T6639] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.462682][ T6639] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.479176][ T6639] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.487667][ T3050] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.495141][ T3050] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.512698][ T3050] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.520111][ T3050] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 83.528756][ T6639] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.536904][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.545096][ T3575] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.552186][ T3575] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.560625][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.568922][ T2934] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.575972][ T2934] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.586463][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.594768][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.603256][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.612418][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.621290][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.629991][ T6639] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.639827][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.647317][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.655952][ T6639] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.665998][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.677214][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.685099][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.692775][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.701013][ T6639] device veth0_vlan entered promiscuous mode [ 83.708482][ T6639] device veth1_vlan entered promiscuous mode [ 83.718480][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.726081][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.733785][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.742625][ T6639] device veth0_macvtap entered promiscuous mode [ 83.749881][ T6639] device veth1_macvtap entered promiscuous mode [ 83.759169][ T6639] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.766363][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.774773][ T3575] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.783612][ T6639] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.790897][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.838232][ T6864] ubi0: attaching mtd0 [ 83.842473][ T6864] ubi0: scanning is finished [ 83.848326][ T6864] ubi0: empty MTD device detected [ 83.877345][ T6864] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 83.884999][ T6864] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 83.892597][ T6864] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 83.899685][ T6864] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 83.907133][ T6864] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 83.913911][ T6864] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 83.921956][ T6864] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2533230578 [ 83.932075][ T6864] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 83.942279][ T6868] ubi0: background thread "ubi_bgt0d" started, PID 6868 2020/03/27 00:41:00 executed programs: 1 [ 89.625892][ T6874] ubi0: detaching mtd0 [ 89.630335][ T6874] ubi0: mtd0 is detached [ 89.634670][ T6874] ubi0: attaching mtd0 [ 89.638887][ T6874] ubi0: scanning is finished [ 89.676582][ T6874] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 89.684196][ T6874] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 89.691727][ T6874] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 89.698825][ T6874] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 89.706352][ T6874] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 89.713125][ T6874] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 89.721339][ T6874] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2533230578 [ 89.731525][ T6874] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 89.741675][ T6878] ubi0: background thread "ubi_bgt0d" started, PID 6878 [ 89.752671][ T6880] ubi0: detaching mtd0 [ 89.757350][ T6880] ubi0: mtd0 is detached [ 89.761715][ T6880] ubi0: attaching mtd0 [ 89.766285][ T6880] ubi0: scanning is finished [ 89.796349][ T6880] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 89.803842][ T6880] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 89.811337][ T6880] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 89.818315][ T6880] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 89.825659][ T6880] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 89.832420][ T6880] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 89.840418][ T6880] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2533230578 [ 89.850380][ T6880] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 89.860271][ T6886] ubi0: background thread "ubi_bgt0d" started, PID 6886 [ 95.348419][ T6888] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127e915c0 (size 32): comm "syz-executor.0", pid 6864, jiffies 4294945657 (age 13.930s) 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: [<000000008a93af8d>] erase_aeb+0x25/0x110 [<000000000e648427>] ubi_wl_init+0x193/0x5c0 [<000000001f51edda>] ubi_attach+0x611/0x18ba [<000000007f9024df>] ubi_attach_mtd_dev+0x584/0xca0 [<00000000923fb237>] ctrl_cdev_ioctl+0x143/0x1b0 [<00000000a9664616>] ksys_ioctl+0xa6/0xd0 [<00000000f0f3be42>] __x64_sys_ioctl+0x1a/0x20 [<00000000a0aba6d2>] do_syscall_64+0x6e/0x220 [<00000000e5e82efc>] entry_SYSCALL_64_after_hwframe+0x44/0xa9