[ 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 '10.128.0.221' (ECDSA) to the list of known hosts. 2020/05/29 11:49:31 parsed 1 programs syzkaller login: [ 95.742763][ T3830] kmemleak: Automatic memory scanning thread ended 2020/05/29 11:49:39 executed programs: 0 [ 103.161076][ T25] audit: type=1400 audit(1590752979.347:8): avc: denied { execmem } for pid=6650 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 103.173567][ T6651] IPVS: ftp: loaded support on port[0] = 21 [ 103.206829][ T6651] chnl_net:caif_netlink_parms(): no params data found [ 103.245397][ T6651] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.252416][ T6651] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.259952][ T6651] device bridge_slave_0 entered promiscuous mode [ 103.267090][ T6651] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.274093][ T6651] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.281532][ T6651] device bridge_slave_1 entered promiscuous mode [ 103.290937][ T6651] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 103.300538][ T6651] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 103.312519][ T6651] team0: Port device team_slave_0 added [ 103.318617][ T6651] team0: Port device team_slave_1 added [ 103.326968][ T6651] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 103.333875][ T6651] 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. [ 103.360074][ T6651] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 103.371022][ T6651] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 103.378073][ T6651] 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. [ 103.404029][ T6651] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 103.475640][ T6651] device hsr_slave_0 entered promiscuous mode [ 103.535007][ T6651] device hsr_slave_1 entered promiscuous mode [ 103.583996][ T6651] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 103.605562][ T6651] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 103.675544][ T6651] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 103.715510][ T6651] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 103.749468][ T6651] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.756566][ T6651] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.763738][ T6651] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.770738][ T6651] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.786681][ T6651] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.794948][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 103.802394][ T3088] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.810392][ T3088] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.817891][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 103.826409][ T6651] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.835237][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 103.843326][ T3892] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.850332][ T3892] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.857723][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 103.866031][ T3892] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.873022][ T3892] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.883145][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 103.891352][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 103.899752][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 103.908716][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 103.917996][ T6651] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 103.928494][ T6651] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 103.935896][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 103.947679][ T6651] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 103.954955][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 103.962237][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 103.972412][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 103.983256][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 103.991191][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 103.998629][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 104.006834][ T6651] device veth0_vlan entered promiscuous mode [ 104.014193][ T6651] device veth1_vlan entered promiscuous mode [ 104.024147][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 104.034696][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 104.042448][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 104.051105][ T6651] device veth0_macvtap entered promiscuous mode [ 104.058377][ T6651] device veth1_macvtap entered promiscuous mode [ 104.067603][ T6651] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.074876][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 104.083311][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 104.092098][ T6651] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.099435][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 104.140597][ T6873] ubi0: attaching mtd0 [ 104.145212][ T6873] ubi0: scanning is finished [ 104.149803][ T6873] ubi0: empty MTD device detected [ 104.186439][ T6873] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 104.193879][ T6873] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 104.201393][ T6873] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 104.209137][ T6873] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 104.216694][ T6873] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 104.223424][ T6873] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 104.231850][ T6873] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 3411376011 [ 104.242061][ T6873] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 104.252083][ T6877] ubi0: background thread "ubi_bgt0d" started, PID 6877 2020/05/29 11:49:46 executed programs: 1 [ 109.830409][ T6882] ubi0: detaching mtd0 [ 109.834957][ T6882] ubi0: mtd0 is detached [ 109.839294][ T6882] ubi0: attaching mtd0 [ 109.843450][ T6882] ubi0: scanning is finished [ 109.874776][ T6882] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 109.882223][ T6882] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 109.889682][ T6882] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 109.896726][ T6882] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 109.904059][ T6882] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 109.911027][ T6882] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 109.919125][ T6882] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 3411376011 [ 109.929242][ T6882] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 109.939315][ T6886] ubi0: background thread "ubi_bgt0d" started, PID 6886 [ 109.951234][ T6888] ubi0: detaching mtd0 [ 109.955662][ T6888] ubi0: mtd0 is detached [ 109.959978][ T6888] ubi0: attaching mtd0 [ 109.964698][ T6888] ubi0: scanning is finished [ 110.004899][ T6888] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 110.012374][ T6888] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 110.019716][ T6888] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 110.026722][ T6888] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 110.034051][ T6888] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 110.040843][ T6888] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 110.048888][ T6888] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 3411376011 [ 110.058878][ T6888] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 110.068757][ T6893] ubi0: background thread "ubi_bgt0d" started, PID 6893 [ 115.438681][ T6896] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88811f40e880 (size 32): comm "syz-executor.0", pid 6873, jiffies 4294947691 (age 13.650s) 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: [<000000005da2cd35>] erase_aeb+0x25/0x110 [<00000000593774b1>] ubi_wl_init+0x193/0x5c0 [<000000002486db08>] ubi_attach+0x611/0x18ba [<0000000041d5b432>] ubi_attach_mtd_dev+0x665/0xcc0 [<00000000ec7ad01b>] ctrl_cdev_ioctl+0x144/0x1b0 [<0000000083ba1be7>] ksys_ioctl+0xa6/0xd0 [<000000004503c460>] __x64_sys_ioctl+0x1a/0x20 [<000000007024e65a>] do_syscall_64+0x6e/0x220 [<000000002606aeb9>] entry_SYSCALL_64_after_hwframe+0x44/0xa9