[ 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 '10.128.0.226' (ECDSA) to the list of known hosts. 2020/04/01 17:14:35 parsed 1 programs syzkaller login: [ 111.093370][ T3824] kmemleak: Automatic memory scanning thread ended 2020/04/01 17:14:44 executed programs: 0 [ 118.540815][ T25] audit: type=1400 audit(1585761284.909:8): avc: denied { execmem } for pid=6676 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 118.568565][ T6677] IPVS: ftp: loaded support on port[0] = 21 [ 118.593982][ T6677] chnl_net:caif_netlink_parms(): no params data found [ 118.695959][ T6677] bridge0: port 1(bridge_slave_0) entered blocking state [ 118.703212][ T6677] bridge0: port 1(bridge_slave_0) entered disabled state [ 118.710896][ T6677] device bridge_slave_0 entered promiscuous mode [ 118.717905][ T6677] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.724926][ T6677] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.732464][ T6677] device bridge_slave_1 entered promiscuous mode [ 118.742370][ T6677] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 118.752165][ T6677] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 118.765006][ T6677] team0: Port device team_slave_0 added [ 118.771167][ T6677] team0: Port device team_slave_1 added [ 118.779723][ T6677] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 118.786995][ T6677] 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. [ 118.813088][ T6677] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 118.824210][ T6677] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 118.831382][ T6677] 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. [ 118.857470][ T6677] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 118.937466][ T6677] device hsr_slave_0 entered promiscuous mode [ 118.996749][ T6677] device hsr_slave_1 entered promiscuous mode [ 119.055283][ T6677] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 119.107448][ T6677] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 119.147430][ T6677] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 119.197420][ T6677] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 119.251170][ T6677] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.258220][ T6677] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.265418][ T6677] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.272431][ T6677] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.288616][ T6677] 8021q: adding VLAN 0 to HW filter on device bond0 [ 119.297306][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 119.305734][ T3084] bridge0: port 1(bridge_slave_0) entered disabled state [ 119.314697][ T3084] bridge0: port 2(bridge_slave_1) entered disabled state [ 119.323150][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 119.332007][ T6677] 8021q: adding VLAN 0 to HW filter on device team0 [ 119.339817][ T3578] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.348097][ T3578] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.355104][ T3578] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.368868][ T6677] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 119.379223][ T6677] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 119.390630][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.399015][ T6881] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.406995][ T6881] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.414666][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 119.423041][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 119.431091][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 119.439041][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 119.447235][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 119.454542][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 119.464343][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 119.471754][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 119.480710][ T6677] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 119.490860][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 119.501877][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 119.509776][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 119.517256][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 119.525283][ T6677] device veth0_vlan entered promiscuous mode [ 119.532875][ T6677] device veth1_vlan entered promiscuous mode [ 119.543007][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 119.550791][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 119.558840][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 119.567692][ T6677] device veth0_macvtap entered promiscuous mode [ 119.574871][ T6677] device veth1_macvtap entered promiscuous mode [ 119.583971][ T6677] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 119.591241][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 119.599665][ T3084] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 119.608378][ T6677] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 119.616833][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 119.624998][ T6881] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 119.669520][ T6901] ubi0: attaching mtd0 [ 119.673771][ T6901] ubi0: scanning is finished [ 119.678790][ T6901] ubi0: empty MTD device detected [ 119.717257][ T6901] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 119.724728][ T6901] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 119.732151][ T6901] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 119.739146][ T6901] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 119.746488][ T6901] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 119.753315][ T6901] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 119.761393][ T6901] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 1254795139 [ 119.771509][ T6901] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 119.781546][ T6904] ubi0: background thread "ubi_bgt0d" started, PID 6904 2020/04/01 17:14:51 executed programs: 1 [ 125.403420][ T6911] ubi0: detaching mtd0 [ 125.407968][ T6911] ubi0: mtd0 is detached [ 125.412344][ T6911] ubi0: attaching mtd0 [ 125.417431][ T6911] ubi0: scanning is finished [ 125.456967][ T6911] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 125.464463][ T6911] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 125.471978][ T6911] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 125.479066][ T6911] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 125.486554][ T6911] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 125.493288][ T6911] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 125.501522][ T6911] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 1254795139 [ 125.511712][ T6911] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 125.521856][ T6915] ubi0: background thread "ubi_bgt0d" started, PID 6915 [ 125.533109][ T6917] ubi0: detaching mtd0 [ 125.537512][ T6917] ubi0: mtd0 is detached [ 125.541860][ T6917] ubi0: attaching mtd0 [ 125.546076][ T6917] ubi0: scanning is finished [ 125.596953][ T6917] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 125.604544][ T6917] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 125.612081][ T6917] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 125.619274][ T6917] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 125.626766][ T6917] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 125.633499][ T6917] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 125.641722][ T6917] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 1254795139 [ 125.651911][ T6917] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 125.662468][ T6922] ubi0: background thread "ubi_bgt0d" started, PID 6922 [ 128.736129][ T0] NOHZ: local_softirq_pending 08 [ 131.109657][ T6925] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88811f652060 (size 32): comm "syz-executor.0", pid 6901, jiffies 4294949238 (age 13.830s) 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: [<00000000aeb59084>] erase_aeb+0x25/0x110 [<000000000162cd83>] ubi_wl_init+0x193/0x5c0 [<0000000031130126>] ubi_attach+0x611/0x18ba [<0000000083c98d38>] ubi_attach_mtd_dev+0x584/0xca0 [<00000000808e398b>] ctrl_cdev_ioctl+0x143/0x1b0 [<000000000b860bbc>] ksys_ioctl+0xa6/0xd0 [<000000006d4ccf56>] __x64_sys_ioctl+0x1a/0x20 [<00000000291a4bca>] do_syscall_64+0x6e/0x220 [<0000000090319560>] entry_SYSCALL_64_after_hwframe+0x44/0xa9