[ 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 '10.128.0.29' (ECDSA) to the list of known hosts. 2020/05/30 05:49:58 parsed 1 programs syzkaller login: [ 99.061688][ T3830] kmemleak: Automatic memory scanning thread ended 2020/05/30 05:50:06 executed programs: 0 [ 106.641832][ T25] audit: type=1400 audit(1590817806.570:8): avc: denied { execmem } for pid=6658 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 106.654209][ T6659] IPVS: ftp: loaded support on port[0] = 21 [ 106.690285][ T6659] chnl_net:caif_netlink_parms(): no params data found [ 106.744335][ T6659] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.751424][ T6659] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.758905][ T6659] device bridge_slave_0 entered promiscuous mode [ 106.765668][ T6659] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.772937][ T6659] bridge0: port 2(bridge_slave_1) entered disabled state [ 106.781216][ T6659] device bridge_slave_1 entered promiscuous mode [ 106.790866][ T6659] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 106.800531][ T6659] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 106.812483][ T6659] team0: Port device team_slave_0 added [ 106.818842][ T6659] team0: Port device team_slave_1 added [ 106.827250][ T6659] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 106.834164][ T6659] 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. [ 106.860456][ T6659] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 106.871606][ T6659] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 106.878714][ T6659] 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. [ 106.904763][ T6659] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 106.957348][ T6659] device hsr_slave_0 entered promiscuous mode [ 106.986673][ T6659] device hsr_slave_1 entered promiscuous mode [ 107.046638][ T6659] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 107.087369][ T6659] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 107.147400][ T6659] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 107.207372][ T6659] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 107.291270][ T6659] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.298570][ T6659] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.305767][ T6659] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.312794][ T6659] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.329133][ T6659] 8021q: adding VLAN 0 to HW filter on device bond0 [ 107.337680][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 107.345094][ T3586] bridge0: port 1(bridge_slave_0) entered disabled state [ 107.353300][ T3586] bridge0: port 2(bridge_slave_1) entered disabled state [ 107.360801][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 107.369427][ T6659] 8021q: adding VLAN 0 to HW filter on device team0 [ 107.377661][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 107.385728][ T37] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.392781][ T37] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.406797][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 107.414971][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.422444][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.430031][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 107.438504][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 107.446705][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 107.455111][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 107.462875][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 107.471907][ T6659] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 107.482042][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 107.489415][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 107.498495][ T6659] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 107.509175][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 107.520805][ T6659] device veth0_vlan entered promiscuous mode [ 107.527207][ T3878] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 107.535040][ T3878] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 107.542739][ T3878] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 107.551655][ T6659] device veth1_vlan entered promiscuous mode [ 107.561870][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 107.569692][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 107.577436][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 107.586264][ T6659] device veth0_macvtap entered promiscuous mode [ 107.593906][ T6659] device veth1_macvtap entered promiscuous mode [ 107.603509][ T6659] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 107.611048][ T3878] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 107.619740][ T3878] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 107.628604][ T6659] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 107.636526][ T3586] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 107.680885][ T6882] ubi0: attaching mtd0 [ 107.685110][ T6882] ubi0: scanning is finished [ 107.689833][ T6882] ubi0: empty MTD device detected [ 107.722999][ T6882] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 107.730882][ T6882] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 107.738164][ T6882] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 107.745097][ T6882] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 107.752591][ T6882] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 107.759741][ T6882] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 107.767848][ T6882] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 4225602155 [ 107.777929][ T6882] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 107.787834][ T6886] ubi0: background thread "ubi_bgt0d" started, PID 6886 2020/05/30 05:50:13 executed programs: 1 [ 113.702195][ T6891] ubi0: detaching mtd0 [ 113.706741][ T6891] ubi0: mtd0 is detached [ 113.711099][ T6891] ubi0: attaching mtd0 [ 113.715254][ T6891] ubi0: scanning is finished [ 113.746666][ T6891] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 113.754141][ T6891] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 113.761671][ T6891] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 113.768744][ T6891] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 113.776259][ T6891] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 113.782993][ T6891] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 113.791279][ T6891] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 4225602155 [ 113.801442][ T6891] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 113.811556][ T6895] ubi0: background thread "ubi_bgt0d" started, PID 6895 [ 113.822705][ T6897] ubi0: detaching mtd0 [ 113.827495][ T6897] ubi0: mtd0 is detached [ 113.831895][ T6897] ubi0: attaching mtd0 [ 113.836526][ T6897] ubi0: scanning is finished [ 113.866574][ T6897] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 113.874068][ T6897] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 113.881682][ T6897] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 113.888760][ T6897] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 113.896284][ T6897] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 113.903017][ T6897] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 113.911341][ T6897] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 4225602155 [ 113.922475][ T6897] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 113.932535][ T6902] ubi0: background thread "ubi_bgt0d" started, PID 6902 [ 119.352639][ T6905] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127cf8660 (size 32): comm "syz-executor.0", pid 6882, jiffies 4294948036 (age 14.050s) 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: [<00000000b824f887>] erase_aeb+0x25/0x110 [<0000000035e7bc39>] ubi_wl_init+0x193/0x5c0 [<00000000c5e58419>] ubi_attach+0x611/0x18ba [<0000000001c85b39>] ubi_attach_mtd_dev+0x665/0xcc0 [<00000000a7d46622>] ctrl_cdev_ioctl+0x144/0x1b0 [<000000007078ce4e>] ksys_ioctl+0xa6/0xd0 [<0000000097f3dcb3>] __x64_sys_ioctl+0x1a/0x20 [<000000009e39c719>] do_syscall_64+0x6e/0x220 [<000000004c7bb8ed>] entry_SYSCALL_64_after_hwframe+0x44/0xa9