[ 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 '10.128.1.8' (ECDSA) to the list of known hosts. 2020/05/17 08:20:59 parsed 1 programs syzkaller login: [ 67.172398][ T3834] kmemleak: Automatic memory scanning thread ended 2020/05/17 08:21:07 executed programs: 0 [ 74.636450][ T26] audit: type=1400 audit(1589703667.301:8): avc: denied { execmem } for pid=6660 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 74.643461][ T6661] IPVS: ftp: loaded support on port[0] = 21 [ 74.683304][ T6661] chnl_net:caif_netlink_parms(): no params data found [ 74.734775][ T6661] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.741809][ T6661] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.749329][ T6661] device bridge_slave_0 entered promiscuous mode [ 74.756829][ T6661] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.763985][ T6661] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.771205][ T6661] device bridge_slave_1 entered promiscuous mode [ 74.781177][ T6661] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.790889][ T6661] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.803032][ T6661] team0: Port device team_slave_0 added [ 74.809032][ T6661] team0: Port device team_slave_1 added [ 74.817479][ T6661] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.824586][ T6661] 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. [ 74.850552][ T6661] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.861554][ T6661] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.868511][ T6661] 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. [ 74.894546][ T6661] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.933192][ T6661] device hsr_slave_0 entered promiscuous mode [ 74.982505][ T6661] device hsr_slave_1 entered promiscuous mode [ 75.041427][ T6661] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.063191][ T6661] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.103212][ T6661] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.163282][ T6661] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.227088][ T6661] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.234123][ T6661] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.241353][ T6661] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.248362][ T6661] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.264559][ T6661] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.273297][ T3585] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.280760][ T3585] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.288807][ T3585] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.296314][ T3585] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.305520][ T6661] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.313595][ T2653] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.321755][ T2653] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.328787][ T2653] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.337338][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.345777][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.352797][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.363565][ T3945] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.371587][ T3945] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.380161][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.389440][ T3945] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.398920][ T6661] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.409635][ T6661] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.417185][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.427737][ T3945] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.435652][ T3945] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.444817][ T6661] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.455133][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.466769][ T6661] device veth0_vlan entered promiscuous mode [ 75.473040][ T2653] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.480969][ T2653] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.488674][ T2653] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.497997][ T6661] device veth1_vlan entered promiscuous mode [ 75.508515][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.516440][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.524268][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.533089][ T6661] device veth0_macvtap entered promiscuous mode [ 75.540423][ T6661] device veth1_macvtap entered promiscuous mode [ 75.550302][ T6661] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.557778][ T2653] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.566523][ T2653] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.575519][ T6661] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.583153][ T3585] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.627127][ T6883] ubi0: attaching mtd0 [ 75.631363][ T6883] ubi0: scanning is finished [ 75.636296][ T6883] ubi0: empty MTD device detected [ 75.664227][ T6883] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 75.671825][ T6883] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 75.679359][ T6883] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 75.686509][ T6883] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 75.693988][ T6883] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 75.700726][ T6883] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 75.708690][ T6883] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2341371684 [ 75.719151][ T6883] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 75.729033][ T6886] ubi0: background thread "ubi_bgt0d" started, PID 6886 2020/05/17 08:21:14 executed programs: 1 [ 81.545118][ T6893] ubi0: detaching mtd0 [ 81.549608][ T6893] ubi0: mtd0 is detached [ 81.553997][ T6893] ubi0: attaching mtd0 [ 81.558264][ T6893] ubi0: scanning is finished [ 81.622394][ T6893] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 81.629872][ T6893] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 81.637102][ T6893] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 81.644084][ T6893] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 81.651457][ T6893] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 81.658224][ T6893] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 81.666204][ T6893] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2341371684 [ 81.676185][ T6893] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 81.686305][ T6897] ubi0: background thread "ubi_bgt0d" started, PID 6897 [ 81.698543][ T6899] ubi0: detaching mtd0 [ 81.703237][ T6899] ubi0: mtd0 is detached [ 81.707607][ T6899] ubi0: attaching mtd0 [ 81.712453][ T6899] ubi0: scanning is finished [ 81.752518][ T6899] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 81.760006][ T6899] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 81.767611][ T6899] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 81.774712][ T6899] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 81.782254][ T6899] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 81.789009][ T6899] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 81.797323][ T6899] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2341371684 [ 81.807611][ T6899] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 81.817786][ T6905] ubi0: background thread "ubi_bgt0d" started, PID 6905 [ 87.405058][ T6907] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127dc7020 (size 32): comm "syz-executor.0", pid 6883, jiffies 4294944827 (age 14.270s) 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: [<000000009c75ac73>] erase_aeb+0x25/0x110 [<0000000069a3e1fb>] ubi_wl_init+0x193/0x5c0 [<00000000a80e5c64>] ubi_attach+0x611/0x18ba [<000000001aec9efd>] ubi_attach_mtd_dev+0x665/0xcc0 [<00000000229cca67>] ctrl_cdev_ioctl+0x144/0x1b0 [<00000000c29ead61>] ksys_ioctl+0xa6/0xd0 [<0000000052460ab2>] __x64_sys_ioctl+0x1a/0x20 [<00000000c8e0aa84>] do_syscall_64+0x6e/0x220 [<00000000e1df8090>] entry_SYSCALL_64_after_hwframe+0x44/0xa9