[ 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 '10.128.0.112' (ECDSA) to the list of known hosts. 2020/06/25 17:47:49 parsed 1 programs syzkaller login: [ 96.977594][ T3646] kmemleak: Automatic memory scanning thread ended 2020/06/25 17:47:57 executed programs: 0 [ 104.512958][ T26] audit: type=1400 audit(1593107277.392:8): avc: denied { execmem } for pid=6451 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 104.526950][ T6452] IPVS: ftp: loaded support on port[0] = 21 [ 104.560333][ T6452] chnl_net:caif_netlink_parms(): no params data found [ 104.630212][ T6452] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.638155][ T6452] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.645757][ T6452] device bridge_slave_0 entered promiscuous mode [ 104.653087][ T6452] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.660619][ T6452] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.668709][ T6452] device bridge_slave_1 entered promiscuous mode [ 104.678962][ T6452] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 104.688742][ T6452] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 104.701164][ T6452] team0: Port device team_slave_0 added [ 104.707197][ T6452] team0: Port device team_slave_1 added [ 104.715980][ T6452] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 104.722950][ T6452] 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. [ 104.748897][ T6452] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 104.760001][ T6452] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 104.766913][ T6452] 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. [ 104.792839][ T6452] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 104.830059][ T6452] device hsr_slave_0 entered promiscuous mode [ 104.889380][ T6452] device hsr_slave_1 entered promiscuous mode [ 104.951701][ T6452] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 105.010124][ T6452] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 105.060062][ T6452] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 105.109986][ T6452] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 105.164016][ T6452] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.171155][ T6452] bridge0: port 2(bridge_slave_1) entered forwarding state [ 105.178430][ T6452] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.185446][ T6452] bridge0: port 1(bridge_slave_0) entered forwarding state [ 105.202193][ T6452] 8021q: adding VLAN 0 to HW filter on device bond0 [ 105.210909][ T2775] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 105.218439][ T2775] bridge0: port 1(bridge_slave_0) entered disabled state [ 105.226334][ T2775] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.234305][ T2775] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 105.242983][ T6452] 8021q: adding VLAN 0 to HW filter on device team0 [ 105.250787][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 105.259047][ T49] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.266110][ T49] bridge0: port 1(bridge_slave_0) entered forwarding state [ 105.274575][ T2775] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 105.283012][ T2775] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.290035][ T2775] bridge0: port 2(bridge_slave_1) entered forwarding state [ 105.301145][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 105.309809][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 105.317949][ T2775] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 105.327170][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 105.336808][ T6452] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 105.347511][ T6452] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 105.355314][ T2775] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 105.365968][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 105.373561][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 105.383070][ T6452] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 105.393418][ T2775] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 105.405955][ T6452] device veth0_vlan entered promiscuous mode [ 105.412270][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 105.420364][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 105.427721][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 105.436999][ T6452] device veth1_vlan entered promiscuous mode [ 105.447196][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 105.455017][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 105.462882][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 105.472045][ T6452] device veth0_macvtap entered promiscuous mode [ 105.479615][ T6452] device veth1_macvtap entered promiscuous mode [ 105.489356][ T6452] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 105.496723][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 105.505640][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 105.514656][ T6452] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 105.521996][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 105.568190][ T6674] ubi0: attaching mtd0 [ 105.573358][ T6674] ubi0: scanning is finished [ 105.577960][ T6674] ubi0: empty MTD device detected [ 105.619905][ T6674] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 105.627376][ T6674] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 105.634662][ T6674] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 105.641793][ T6674] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 105.649259][ T6674] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 105.655992][ T6674] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 105.664232][ T6674] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2894976621 [ 105.674432][ T6674] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 105.684509][ T6678] ubi0: background thread "ubi_bgt0d" started, PID 6678 2020/06/25 17:48:04 executed programs: 1 [ 111.329729][ T6684] ubi0: detaching mtd0 [ 111.334429][ T6684] ubi0: mtd0 is detached [ 111.339296][ T6684] ubi0: attaching mtd0 [ 111.343711][ T6684] ubi0: scanning is finished [ 111.369422][ T6684] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 111.377413][ T6684] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 111.384968][ T6684] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 111.392255][ T6684] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 111.399888][ T6684] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 111.406618][ T6684] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 111.415103][ T6684] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2894976621 [ 111.425839][ T6684] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 111.436583][ T6688] ubi0: background thread "ubi_bgt0d" started, PID 6688 [ 111.449160][ T6690] ubi0: detaching mtd0 [ 111.453664][ T6690] ubi0: mtd0 is detached [ 111.458040][ T6690] ubi0: attaching mtd0 [ 111.462555][ T6690] ubi0: scanning is finished [ 111.493087][ T6690] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 111.500605][ T6690] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 111.507797][ T6690] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 111.514769][ T6690] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 111.522202][ T6690] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 111.529052][ T6690] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 111.537032][ T6690] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2894976621 [ 111.547068][ T6690] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 111.557006][ T6696] ubi0: background thread "ubi_bgt0d" started, PID 6696 [ 117.022382][ T6697] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127c26720 (size 32): comm "syz-executor.0", pid 6674, jiffies 4294947827 (age 13.860s) 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: [<0000000066e3f098>] erase_aeb+0x25/0x110 [<00000000b36cf323>] ubi_wl_init+0x191/0x5c0 [<0000000062e25635>] ubi_attach+0x63b/0x1879 [<000000008d9e07ff>] ubi_attach_mtd_dev+0x65c/0xd30 [<000000003de728fe>] ctrl_cdev_ioctl+0x144/0x1b0 [<000000007a2f3a7b>] ksys_ioctl+0xa6/0xd0 [<000000002cb56274>] __x64_sys_ioctl+0x1a/0x20 [<00000000d0191dd8>] do_syscall_64+0x4c/0xe0 [<00000000b8e9f3ed>] entry_SYSCALL_64_after_hwframe+0x44/0xa9