[ 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 '10.128.0.135' (ECDSA) to the list of known hosts. 2020/07/17 07:12:01 parsed 1 programs syzkaller login: [ 100.593978][ T3648] kmemleak: Automatic memory scanning thread ended 2020/07/17 07:12:09 executed programs: 0 [ 108.161406][ T25] audit: type=1400 audit(1594969929.063:8): avc: denied { execmem } for pid=6482 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 108.168678][ T6483] IPVS: ftp: loaded support on port[0] = 21 [ 108.208023][ T6483] chnl_net:caif_netlink_parms(): no params data found [ 108.279726][ T6483] bridge0: port 1(bridge_slave_0) entered blocking state [ 108.286978][ T6483] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.294630][ T6483] device bridge_slave_0 entered promiscuous mode [ 108.301819][ T6483] bridge0: port 2(bridge_slave_1) entered blocking state [ 108.309116][ T6483] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.316345][ T6483] device bridge_slave_1 entered promiscuous mode [ 108.326548][ T6483] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 108.337150][ T6483] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 108.349627][ T6483] team0: Port device team_slave_0 added [ 108.355626][ T6483] team0: Port device team_slave_1 added [ 108.364486][ T6483] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 108.371648][ T6483] 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. [ 108.397994][ T6483] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 108.409238][ T6483] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 108.416160][ T6483] 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. [ 108.442534][ T6483] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 108.468072][ T6483] device hsr_slave_0 entered promiscuous mode [ 108.537542][ T6483] device hsr_slave_1 entered promiscuous mode [ 108.608315][ T6483] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 108.668190][ T6483] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 108.708103][ T6483] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 108.738076][ T6483] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 108.782460][ T6483] bridge0: port 2(bridge_slave_1) entered blocking state [ 108.789518][ T6483] bridge0: port 2(bridge_slave_1) entered forwarding state [ 108.796874][ T6483] bridge0: port 1(bridge_slave_0) entered blocking state [ 108.804023][ T6483] bridge0: port 1(bridge_slave_0) entered forwarding state [ 108.820256][ T6483] 8021q: adding VLAN 0 to HW filter on device bond0 [ 108.829393][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 108.837083][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.844723][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.852292][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 108.861262][ T6483] 8021q: adding VLAN 0 to HW filter on device team0 [ 108.869216][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 108.877631][ T6686] bridge0: port 1(bridge_slave_0) entered blocking state [ 108.884779][ T6686] bridge0: port 1(bridge_slave_0) entered forwarding state [ 108.899219][ T6483] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 108.909876][ T6483] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 108.921100][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 108.929398][ T6686] bridge0: port 2(bridge_slave_1) entered blocking state [ 108.936589][ T6686] bridge0: port 2(bridge_slave_1) entered forwarding state [ 108.944619][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 108.952740][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 108.960927][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 108.969158][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 108.977301][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 108.984648][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 108.994872][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 109.002655][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 109.011978][ T6483] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 109.022665][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 109.034658][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 109.042639][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 109.050060][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 109.058681][ T6483] device veth0_vlan entered promiscuous mode [ 109.066556][ T6483] device veth1_vlan entered promiscuous mode [ 109.077243][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 109.084886][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 109.092897][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 109.102130][ T6483] device veth0_macvtap entered promiscuous mode [ 109.109523][ T6483] device veth1_macvtap entered promiscuous mode [ 109.119426][ T6483] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 109.126639][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 109.135385][ T6096] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 109.144290][ T6483] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 109.152770][ T6686] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 109.198921][ T6706] ubi0: attaching mtd0 [ 109.203271][ T6706] ubi0: scanning is finished [ 109.208435][ T6706] ubi0: empty MTD device detected [ 109.238924][ T6706] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 109.246715][ T6706] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 109.254653][ T6706] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 109.262172][ T6706] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 109.269750][ T6706] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 109.276646][ T6706] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 109.285351][ T6706] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2047113183 [ 109.295830][ T6706] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 109.306028][ T6710] ubi0: background thread "ubi_bgt0d" started, PID 6710 2020/07/17 07:12:15 executed programs: 1 [ 114.910063][ T6715] ubi0: detaching mtd0 [ 114.914573][ T6715] ubi0: mtd0 is detached [ 114.919219][ T6715] ubi0: attaching mtd0 [ 114.923473][ T6715] ubi0: scanning is finished [ 114.967231][ T6715] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 114.974693][ T6715] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 114.981898][ T6715] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 114.988823][ T6715] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 114.996162][ T6715] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 115.002905][ T6715] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 115.010876][ T6715] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2047113183 [ 115.020834][ T6715] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 115.030836][ T6718] ubi0: background thread "ubi_bgt0d" started, PID 6718 [ 115.042069][ T6721] ubi0: detaching mtd0 [ 115.046476][ T6721] ubi0: mtd0 is detached [ 115.051277][ T6721] ubi0: attaching mtd0 [ 115.055524][ T6721] ubi0: scanning is finished [ 115.087728][ T6721] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 115.095228][ T6721] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 115.102801][ T6721] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 115.110006][ T6721] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 115.117683][ T6721] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 115.124419][ T6721] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 115.132678][ T6721] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 2047113183 [ 115.142934][ T6721] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 115.153019][ T6727] ubi0: background thread "ubi_bgt0d" started, PID 6727 [ 118.426468][ T0] NOHZ: local_softirq_pending 08 [ 120.588535][ T6729] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127cab220 (size 32): comm "syz-executor.0", pid 6706, jiffies 4294948198 (age 13.780s) hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........"....... 00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................ backtrace: [<000000007b5e07f3>] erase_aeb+0x25/0x110 [<00000000f6da858b>] ubi_wl_init+0x191/0x5c0 [<000000004aa27742>] ubi_attach+0x63b/0x1879 [<0000000008beb067>] ubi_attach_mtd_dev+0x65c/0xd30 [<000000004b21edb6>] ctrl_cdev_ioctl+0x144/0x1b0 [<00000000739100f9>] ksys_ioctl+0xa6/0xd0 [<00000000506afd2c>] __x64_sys_ioctl+0x1a/0x20 [<00000000f553a8b6>] do_syscall_64+0x4c/0xe0 [<00000000a0941224>] entry_SYSCALL_64_after_hwframe+0x44/0xa9