[ 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 '10.128.0.82' (ECDSA) to the list of known hosts. 2020/04/11 19:09:33 parsed 1 programs syzkaller login: [ 124.971296][ T3830] kmemleak: Automatic memory scanning thread ended 2020/04/11 19:09:42 executed programs: 0 [ 132.599670][ T25] audit: type=1400 audit(1586632182.781:8): avc: denied { execmem } for pid=6644 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 132.612946][ T6645] IPVS: ftp: loaded support on port[0] = 21 [ 132.644228][ T6645] chnl_net:caif_netlink_parms(): no params data found [ 132.745388][ T6645] bridge0: port 1(bridge_slave_0) entered blocking state [ 132.752493][ T6645] bridge0: port 1(bridge_slave_0) entered disabled state [ 132.759703][ T6645] device bridge_slave_0 entered promiscuous mode [ 132.767383][ T6645] bridge0: port 2(bridge_slave_1) entered blocking state [ 132.774629][ T6645] bridge0: port 2(bridge_slave_1) entered disabled state [ 132.782395][ T6645] device bridge_slave_1 entered promiscuous mode [ 132.792116][ T6645] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 132.801911][ T6645] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 132.814295][ T6645] team0: Port device team_slave_0 added [ 132.820425][ T6645] team0: Port device team_slave_1 added [ 132.829081][ T6645] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 132.836331][ T6645] 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. [ 132.862494][ T6645] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 132.873881][ T6645] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 132.882061][ T6645] 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. [ 132.908173][ T6645] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 132.951463][ T6645] device hsr_slave_0 entered promiscuous mode [ 133.040788][ T6645] device hsr_slave_1 entered promiscuous mode [ 133.139167][ T6645] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 133.171531][ T6645] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 133.231454][ T6645] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 133.281513][ T6645] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 133.345328][ T6645] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.352380][ T6645] bridge0: port 2(bridge_slave_1) entered forwarding state [ 133.359688][ T6645] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.366715][ T6645] bridge0: port 1(bridge_slave_0) entered forwarding state [ 133.383606][ T6645] 8021q: adding VLAN 0 to HW filter on device bond0 [ 133.392328][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 133.399911][ T44] bridge0: port 1(bridge_slave_0) entered disabled state [ 133.407461][ T44] bridge0: port 2(bridge_slave_1) entered disabled state [ 133.415606][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 133.424197][ T6645] 8021q: adding VLAN 0 to HW filter on device team0 [ 133.432290][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 133.440373][ T3584] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.447396][ T3584] bridge0: port 1(bridge_slave_0) entered forwarding state [ 133.461006][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 133.469310][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.476349][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 133.484108][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 133.492237][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 133.500332][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 133.508384][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 133.516424][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 133.525367][ T6645] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 133.535359][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 133.542938][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 133.552311][ T6645] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 133.563027][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 133.574590][ T6645] device veth0_vlan entered promiscuous mode [ 133.581019][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 133.588892][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 133.596826][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 133.605740][ T6645] device veth1_vlan entered promiscuous mode [ 133.616073][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 133.623783][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 133.631994][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 133.641371][ T6645] device veth0_macvtap entered promiscuous mode [ 133.648740][ T6645] device veth1_macvtap entered promiscuous mode [ 133.658254][ T6645] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 133.666041][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 133.674548][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 133.684097][ T6645] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 133.691416][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 133.699587][ T3584] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 133.743918][ T6868] ubi0: attaching mtd0 [ 133.748239][ T6868] ubi0: scanning is finished [ 133.753680][ T6868] ubi0: empty MTD device detected [ 133.791205][ T6868] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 133.798690][ T6868] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 133.805998][ T6868] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 133.813022][ T6868] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 133.820372][ T6868] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 133.827149][ T6868] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 133.835192][ T6868] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 1770826687 [ 133.845348][ T6868] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 133.855297][ T6872] ubi0: background thread "ubi_bgt0d" started, PID 6872 [ 133.862549][ T6868] ubi0: detaching mtd0 [ 133.866982][ T6868] ubi0: mtd0 is detached 2020/04/11 19:09:49 executed programs: 1 [ 139.458860][ T6880] ubi0: attaching mtd0 [ 139.463103][ T6880] ubi0: scanning is finished [ 139.501035][ T6880] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 139.508565][ T6880] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 139.515948][ T6880] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 139.522947][ T6880] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 139.530361][ T6880] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 139.537112][ T6880] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 139.545079][ T6880] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 1770826687 [ 139.555099][ T6880] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 139.565006][ T6882] ubi0: background thread "ubi_bgt0d" started, PID 6882 [ 139.565741][ T6880] ubi0: detaching mtd0 [ 139.576380][ T6880] ubi0: mtd0 is detached [ 139.586923][ T6886] ubi0: attaching mtd0 [ 139.591356][ T6886] ubi0: scanning is finished [ 139.622080][ T6886] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 139.629686][ T6886] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 139.637337][ T6886] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 139.644487][ T6886] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 139.652154][ T6886] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 139.658917][ T6886] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 139.667129][ T6886] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 1770826687 [ 139.677367][ T6886] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 139.687670][ T6890] ubi0: background thread "ubi_bgt0d" started, PID 6890 [ 139.687785][ T6886] ubi0: detaching mtd0 [ 139.699000][ T6886] ubi0: mtd0 is detached [ 142.840228][ T0] NOHZ: local_softirq_pending 08 [ 145.140628][ T6894] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127dee2a0 (size 32): comm "syz-executor.0", pid 6868, jiffies 4294950643 (age 13.790s) 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: [<0000000061ef4742>] erase_aeb+0x25/0x110 [<0000000055fb20d2>] ubi_wl_init+0x193/0x5c0 [<00000000cd26e17f>] ubi_attach+0x611/0x18ba [<0000000091dfb343>] ubi_attach_mtd_dev+0x665/0xcc0 [<000000006d4b73bf>] ctrl_cdev_ioctl+0x144/0x1b0 [<000000007744109e>] ksys_ioctl+0xa6/0xd0 [<000000007e2b9c92>] __x64_sys_ioctl+0x1a/0x20 [<00000000d65a2f83>] do_syscall_64+0x6e/0x220 [<00000000e34da169>] entry_SYSCALL_64_after_hwframe+0x44/0xa9