[ 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 '10.128.0.254' (ECDSA) to the list of known hosts. 2020/03/31 05:31:00 parsed 1 programs syzkaller login: [ 74.985610][ T3826] kmemleak: Automatic memory scanning thread ended 2020/03/31 05:31:10 executed programs: 0 [ 82.582015][ T25] audit: type=1400 audit(1585632670.115:8): avc: denied { execmem } for pid=6643 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 82.589337][ T6644] IPVS: ftp: loaded support on port[0] = 21 [ 82.627265][ T6644] chnl_net:caif_netlink_parms(): no params data found [ 82.681878][ T6644] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.689080][ T6644] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.697195][ T6644] device bridge_slave_0 entered promiscuous mode [ 82.704277][ T6644] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.711314][ T6644] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.719008][ T6644] device bridge_slave_1 entered promiscuous mode [ 82.728720][ T6644] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.738445][ T6644] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 82.750601][ T6644] team0: Port device team_slave_0 added [ 82.756766][ T6644] team0: Port device team_slave_1 added [ 82.765443][ T6644] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 82.772370][ T6644] 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. [ 82.798735][ T6644] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 82.810012][ T6644] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 82.817076][ T6644] 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. [ 82.843475][ T6644] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 82.904170][ T6644] device hsr_slave_0 entered promiscuous mode [ 82.963395][ T6644] device hsr_slave_1 entered promiscuous mode [ 83.002707][ T6644] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.034379][ T6644] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.104173][ T6644] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.144085][ T6644] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.178011][ T6644] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.185085][ T6644] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.192308][ T6644] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.199528][ T6644] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.216290][ T6644] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.225110][ T3901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.232733][ T3901] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.240794][ T3901] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.248456][ T3901] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 83.257512][ T6644] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.265418][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.273948][ T3871] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.281048][ T3871] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.295692][ T6644] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 83.306278][ T6644] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 83.317586][ T6847] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.325847][ T6847] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.332859][ T6847] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.340742][ T6847] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.349210][ T6847] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.357360][ T6847] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.365298][ T6847] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.373611][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.380921][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.391164][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.398678][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.407771][ T6644] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.418174][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.430108][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.438288][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.445823][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.454616][ T6644] device veth0_vlan entered promiscuous mode [ 83.462642][ T6644] device veth1_vlan entered promiscuous mode [ 83.473465][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.481140][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.489286][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.498377][ T6644] device veth0_macvtap entered promiscuous mode [ 83.505889][ T6644] device veth1_macvtap entered promiscuous mode [ 83.515329][ T6644] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.522529][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.531082][ T3871] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.540188][ T6644] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.547718][ T3901] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.590080][ T6868] ubi0: attaching mtd0 [ 83.595465][ T6868] ubi0: scanning is finished [ 83.600069][ T6868] ubi0: empty MTD device detected [ 83.644067][ T6868] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 83.651570][ T6868] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 83.659331][ T6868] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 83.666475][ T6868] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 83.674009][ T6868] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 83.680802][ T6868] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 83.688823][ T6868] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 846634390 [ 83.698800][ T6868] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 83.708699][ T6872] ubi0: background thread "ubi_bgt0d" started, PID 6872 2020/03/31 05:31:17 executed programs: 1 [ 89.464371][ T6877] ubi0: detaching mtd0 [ 89.468949][ T6877] ubi0: mtd0 is detached [ 89.474139][ T6877] ubi0: attaching mtd0 [ 89.478536][ T6877] ubi0: scanning is finished [ 89.522856][ T6877] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 89.530376][ T6877] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 89.537777][ T6877] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 89.544727][ T6877] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 89.552796][ T6877] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 89.559536][ T6877] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 89.567550][ T6877] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 846634390 [ 89.577456][ T6877] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 89.587374][ T6881] ubi0: background thread "ubi_bgt0d" started, PID 6881 [ 89.599645][ T6883] ubi0: detaching mtd0 [ 89.604418][ T6883] ubi0: mtd0 is detached [ 89.608797][ T6883] ubi0: attaching mtd0 [ 89.613676][ T6883] ubi0: scanning is finished [ 89.646658][ T6883] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 89.654289][ T6883] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 89.661626][ T6883] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 89.668955][ T6883] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 89.676462][ T6883] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 89.683353][ T6883] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 89.691304][ T6883] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 846634390 [ 89.701487][ T6883] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 89.712425][ T6889] ubi0: background thread "ubi_bgt0d" started, PID 6889 [ 95.319172][ T6890] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88811eef04a0 (size 32): comm "syz-executor.0", pid 6868, jiffies 4294945636 (age 14.200s) 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: [<000000000010fa99>] erase_aeb+0x25/0x110 [<000000003575d866>] ubi_wl_init+0x193/0x5c0 [<00000000514bc2e7>] ubi_attach+0x611/0x18ba [<0000000028333ac3>] ubi_attach_mtd_dev+0x584/0xca0 [<00000000593bc10a>] ctrl_cdev_ioctl+0x143/0x1b0 [<0000000042bc1d0b>] ksys_ioctl+0xa6/0xd0 [<0000000050d0048e>] __x64_sys_ioctl+0x1a/0x20 [<00000000d0daa890>] do_syscall_64+0x6e/0x220 [<000000004cc2f88e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9