[ 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 '10.128.0.168' (ECDSA) to the list of known hosts. 2020/07/16 12:42:05 parsed 1 programs syzkaller login: [ 95.437981][ T3643] kmemleak: Automatic memory scanning thread ended 2020/07/16 12:42:12 executed programs: 0 [ 103.033396][ T25] audit: type=1400 audit(1594903332.788:8): avc: denied { execmem } for pid=6479 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 103.048505][ T6480] IPVS: ftp: loaded support on port[0] = 21 [ 103.085009][ T6480] chnl_net:caif_netlink_parms(): no params data found [ 103.133429][ T6480] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.140666][ T6480] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.148806][ T6480] device bridge_slave_0 entered promiscuous mode [ 103.156212][ T6480] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.163300][ T6480] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.171073][ T6480] device bridge_slave_1 entered promiscuous mode [ 103.182443][ T6480] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 103.192670][ T6480] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 103.205999][ T6480] team0: Port device team_slave_0 added [ 103.212332][ T6480] team0: Port device team_slave_1 added [ 103.222450][ T6480] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 103.229983][ T6480] 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. [ 103.256260][ T6480] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 103.267557][ T6480] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 103.274508][ T6480] 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. [ 103.300802][ T6480] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 103.365787][ T6480] device hsr_slave_0 entered promiscuous mode [ 103.415023][ T6480] device hsr_slave_1 entered promiscuous mode [ 103.497348][ T6480] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 103.536091][ T6480] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 103.565774][ T6480] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 103.625781][ T6480] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 103.670186][ T6480] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.677296][ T6480] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.684568][ T6480] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.691654][ T6480] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.709255][ T6480] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.718067][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 103.726236][ T2891] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.733478][ T2891] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.741888][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 103.750729][ T6480] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.758949][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 103.767359][ T35] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.774395][ T35] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.783111][ T3414] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 103.791568][ T3414] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.798665][ T3414] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.809777][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 103.818042][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 103.826963][ T3414] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 103.838413][ T6480] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 103.849320][ T6480] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 103.860494][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 103.868817][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 103.877141][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 103.889094][ T3414] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 103.896671][ T3414] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 103.906323][ T6480] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 103.917690][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 103.930901][ T6480] device veth0_vlan entered promiscuous mode [ 103.937325][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 103.945651][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 103.953139][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 103.962729][ T6480] device veth1_vlan entered promiscuous mode [ 103.973557][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 103.981777][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 103.990269][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 103.999689][ T6480] device veth0_macvtap entered promiscuous mode [ 104.007520][ T6480] device veth1_macvtap entered promiscuous mode [ 104.018014][ T6480] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.025493][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 104.034125][ T2891] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 104.043761][ T6480] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.051254][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 104.104333][ T6703] ubi0: attaching mtd0 [ 104.108825][ T6703] ubi0: scanning is finished [ 104.113486][ T6703] ubi0: empty MTD device detected [ 104.148080][ T6703] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 104.160081][ T6703] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 104.167641][ T6703] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 104.174565][ T6703] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 104.182338][ T6703] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 104.189604][ T6703] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 104.198113][ T6703] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2132737185 [ 104.214452][ T6703] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 104.225183][ T6707] ubi0: background thread "ubi_bgt0d" started, PID 6707 2020/07/16 12:42:19 executed programs: 1 [ 110.099194][ T6712] ubi0: detaching mtd0 [ 110.103831][ T6712] ubi0: mtd0 is detached [ 110.109006][ T6712] ubi0: attaching mtd0 [ 110.113256][ T6712] ubi0: scanning is finished [ 110.175452][ T6712] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 110.182965][ T6712] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 110.190505][ T6712] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 110.197839][ T6712] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 110.205490][ T6712] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 110.212238][ T6712] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 110.220619][ T6712] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2132737185 [ 110.230915][ T6712] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 110.241244][ T6715] ubi0: background thread "ubi_bgt0d" started, PID 6715 [ 110.253943][ T6718] ubi0: detaching mtd0 [ 110.258689][ T6718] ubi0: mtd0 is detached [ 110.263203][ T6718] ubi0: attaching mtd0 [ 110.267659][ T6718] ubi0: scanning is finished [ 110.305647][ T6718] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 110.313191][ T6718] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 110.320906][ T6718] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 110.327935][ T6718] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 110.335472][ T6718] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 110.342359][ T6718] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 110.350471][ T6718] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2132737185 [ 110.360552][ T6718] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 110.370519][ T6723] ubi0: background thread "ubi_bgt0d" started, PID 6723 [ 116.126217][ T6726] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127e3b980 (size 32): comm "syz-executor.0", pid 6703, jiffies 4294947686 (age 14.640s) hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........"....... 00 10 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................ backtrace: [<000000006c4730e5>] erase_aeb+0x25/0x110 [<00000000fbb4078f>] ubi_wl_init+0x191/0x5c0 [<00000000c802b55c>] ubi_attach+0x63b/0x1879 [<0000000052f8fbf3>] ubi_attach_mtd_dev+0x65c/0xd30 [<0000000012ab37c6>] ctrl_cdev_ioctl+0x144/0x1b0 [<00000000080a2d25>] ksys_ioctl+0xa6/0xd0 [<000000001eb39c48>] __x64_sys_ioctl+0x1a/0x20 [<00000000d852be93>] do_syscall_64+0x4c/0xe0 [<00000000f97cb7b0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9