[ 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 '10.128.1.38' (ECDSA) to the list of known hosts. 2020/04/02 10:54:12 parsed 1 programs syzkaller login: [ 533.395271][ T3825] kmemleak: Automatic memory scanning thread ended 2020/04/02 10:54:22 executed programs: 0 [ 541.102209][ T25] audit: type=1400 audit(1585824862.438:8): avc: denied { execmem } for pid=6626 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 541.110974][ T6628] IPVS: ftp: loaded support on port[0] = 21 [ 541.150235][ T6628] chnl_net:caif_netlink_parms(): no params data found [ 541.174348][ T6628] bridge0: port 1(bridge_slave_0) entered blocking state [ 541.181420][ T6628] bridge0: port 1(bridge_slave_0) entered disabled state [ 541.189294][ T6628] device bridge_slave_0 entered promiscuous mode [ 541.196254][ T6628] bridge0: port 2(bridge_slave_1) entered blocking state [ 541.203527][ T6628] bridge0: port 2(bridge_slave_1) entered disabled state [ 541.211019][ T6628] device bridge_slave_1 entered promiscuous mode [ 541.221897][ T6628] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 541.232081][ T6628] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 541.246116][ T6628] team0: Port device team_slave_0 added [ 541.252165][ T6628] team0: Port device team_slave_1 added [ 541.261308][ T6628] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 541.268870][ T6628] 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. [ 541.295722][ T6628] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 541.308136][ T6628] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 541.315605][ T6628] 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. [ 541.341782][ T6628] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 541.383425][ T6628] device hsr_slave_0 entered promiscuous mode [ 541.412651][ T6628] device hsr_slave_1 entered promiscuous mode [ 541.483909][ T6628] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 541.513808][ T6628] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 541.543419][ T6628] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 541.603506][ T6628] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 541.648006][ T6628] bridge0: port 2(bridge_slave_1) entered blocking state [ 541.655585][ T6628] bridge0: port 2(bridge_slave_1) entered forwarding state [ 541.663142][ T6628] bridge0: port 1(bridge_slave_0) entered blocking state [ 541.670172][ T6628] bridge0: port 1(bridge_slave_0) entered forwarding state [ 541.687824][ T6628] 8021q: adding VLAN 0 to HW filter on device bond0 [ 541.696580][ T6752] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 541.704992][ T6752] bridge0: port 1(bridge_slave_0) entered disabled state [ 541.712353][ T6752] bridge0: port 2(bridge_slave_1) entered disabled state [ 541.720992][ T6752] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 541.729663][ T6628] 8021q: adding VLAN 0 to HW filter on device team0 [ 541.738131][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 541.746678][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 541.753844][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 541.768291][ T6628] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 541.778684][ T6628] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 541.790185][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 541.798573][ T6834] bridge0: port 2(bridge_slave_1) entered blocking state [ 541.805617][ T6834] bridge0: port 2(bridge_slave_1) entered forwarding state [ 541.813646][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 541.821688][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 541.829852][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 541.837880][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 541.845990][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 541.853354][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 541.864796][ T6628] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 541.872765][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 541.880223][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 541.894386][ T6628] device veth0_vlan entered promiscuous mode [ 541.901977][ T6628] device veth1_vlan entered promiscuous mode [ 541.908656][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 541.917182][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 541.925705][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 541.933333][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 541.940665][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 541.953283][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 541.961094][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 541.970213][ T6628] device veth0_macvtap entered promiscuous mode [ 541.978094][ T6628] device veth1_macvtap entered promiscuous mode [ 541.987478][ T6628] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 541.994799][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 542.003612][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 542.012279][ T6628] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 542.019727][ T6834] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 542.065088][ T6855] ubi0: attaching mtd0 [ 542.069342][ T6855] ubi0: scanning is finished [ 542.074428][ T6855] ubi0: empty MTD device detected [ 542.093642][ T6855] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 542.101245][ T6855] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 542.112563][ T6855] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 542.120383][ T6855] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 542.128331][ T6855] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 542.135415][ T6855] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 542.143392][ T6855] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 763752732 [ 542.153364][ T6855] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 542.163424][ T6859] ubi0: background thread "ubi_bgt0d" started, PID 6859 2020/04/02 10:54:29 executed programs: 1 [ 547.993545][ T6864] ubi0: detaching mtd0 [ 547.998296][ T6864] ubi0: mtd0 is detached [ 548.002806][ T6864] ubi0: attaching mtd0 [ 548.006978][ T6864] ubi0: scanning is finished [ 548.052722][ T6864] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 548.060197][ T6864] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 548.067864][ T6864] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 548.074982][ T6864] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 548.082763][ T6864] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 548.089502][ T6864] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 548.097737][ T6864] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 763752732 [ 548.107897][ T6864] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 548.118070][ T6868] ubi0: background thread "ubi_bgt0d" started, PID 6868 [ 548.129555][ T6870] ubi0: detaching mtd0 [ 548.134422][ T6870] ubi0: mtd0 is detached [ 548.138806][ T6870] ubi0: attaching mtd0 [ 548.143517][ T6870] ubi0: scanning is finished [ 548.172430][ T6870] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 548.179935][ T6870] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 548.187379][ T6870] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 548.194644][ T6870] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 548.202019][ T6870] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 548.208755][ T6870] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 548.216761][ T6870] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 763752732 [ 548.226650][ T6870] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 548.236549][ T6876] ubi0: background thread "ubi_bgt0d" started, PID 6876 [ 553.878233][ T6878] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888127d848c0 (size 32): comm "syz-executor.0", pid 6855, jiffies 4294991471 (age 14.320s) 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: [<00000000b7e59e97>] erase_aeb+0x25/0x110 [<000000003008d94c>] ubi_wl_init+0x193/0x5c0 [<000000003f649d65>] ubi_attach+0x611/0x18ba [<00000000ab099a1b>] ubi_attach_mtd_dev+0x584/0xca0 [<00000000bbd9736b>] ctrl_cdev_ioctl+0x144/0x1b0 [<000000005e70e4e7>] ksys_ioctl+0xa6/0xd0 [<0000000037b42c01>] __x64_sys_ioctl+0x1a/0x20 [<00000000c9754d80>] do_syscall_64+0x6e/0x220 [<00000000dd148aae>] entry_SYSCALL_64_after_hwframe+0x44/0xa9