[ 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 '10.128.1.56' (ECDSA) to the list of known hosts. 2020/07/15 13:02:43 parsed 1 programs syzkaller login: [ 98.901672][ T3647] kmemleak: Automatic memory scanning thread ended 2020/07/15 13:02:51 executed programs: 0 [ 106.371613][ T26] audit: type=1400 audit(1594818171.438:8): avc: denied { execmem } for pid=6430 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 106.384493][ T6431] IPVS: ftp: loaded support on port[0] = 21 [ 106.417812][ T6431] chnl_net:caif_netlink_parms(): no params data found [ 106.457739][ T6431] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.465155][ T6431] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.472401][ T6431] device bridge_slave_0 entered promiscuous mode [ 106.480315][ T6431] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.488290][ T6431] bridge0: port 2(bridge_slave_1) entered disabled state [ 106.495812][ T6431] device bridge_slave_1 entered promiscuous mode [ 106.506034][ T6431] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 106.515718][ T6431] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 106.529191][ T6431] team0: Port device team_slave_0 added [ 106.535660][ T6431] team0: Port device team_slave_1 added [ 106.544584][ T6431] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 106.551623][ T6431] 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. [ 106.577864][ T6431] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 106.589126][ T6431] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 106.596295][ T6431] 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. [ 106.623543][ T6431] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 106.714399][ T6431] device hsr_slave_0 entered promiscuous mode [ 106.773657][ T6431] device hsr_slave_1 entered promiscuous mode [ 106.854410][ T6431] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 106.884456][ T6431] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 106.944365][ T6431] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 106.994374][ T6431] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 107.038305][ T6431] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.047103][ T6431] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.054328][ T6431] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.061451][ T6431] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.077704][ T6431] 8021q: adding VLAN 0 to HW filter on device bond0 [ 107.086521][ T2921] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 107.094379][ T2921] bridge0: port 1(bridge_slave_0) entered disabled state [ 107.101797][ T2921] bridge0: port 2(bridge_slave_1) entered disabled state [ 107.109659][ T2921] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 107.118752][ T6431] 8021q: adding VLAN 0 to HW filter on device team0 [ 107.126905][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 107.135320][ T6634] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.142692][ T6634] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.151266][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 107.159858][ T44] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.166896][ T44] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.177977][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 107.186463][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 107.195151][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 107.206035][ T6431] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 107.216447][ T6431] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 107.227569][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 107.235739][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 107.244041][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 107.254183][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 107.261632][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 107.270684][ T6431] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 107.281286][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 107.292495][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 107.301072][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 107.308741][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 107.317304][ T6431] device veth0_vlan entered promiscuous mode [ 107.325570][ T6431] device veth1_vlan entered promiscuous mode [ 107.335927][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 107.343745][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 107.351442][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 107.360760][ T6431] device veth0_macvtap entered promiscuous mode [ 107.368498][ T6431] device veth1_macvtap entered promiscuous mode [ 107.378141][ T6431] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 107.385535][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 107.394520][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 107.403379][ T6431] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 107.413135][ T6634] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 107.455035][ T6654] ubi0: attaching mtd0 [ 107.459285][ T6654] ubi0: scanning is finished [ 107.463988][ T6654] ubi0: empty MTD device detected [ 107.498809][ T6654] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 107.506376][ T6654] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 107.513574][ T6654] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 107.520486][ T6654] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 107.528060][ T6654] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 107.535697][ T6654] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 107.543671][ T6654] ubi0: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 87104238 [ 107.553519][ T6654] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 107.563417][ T6658] ubi0: background thread "ubi_bgt0d" started, PID 6658 2020/07/15 13:02:58 executed programs: 1 [ 113.194003][ T6663] ubi0: detaching mtd0 [ 113.198815][ T6663] ubi0: mtd0 is detached [ 113.203985][ T6663] ubi0: attaching mtd0 [ 113.208310][ T6663] ubi0: scanning is finished [ 113.253808][ T6663] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 113.261686][ T6663] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 113.269318][ T6663] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 113.276439][ T6663] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 113.284069][ T6663] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 113.290803][ T6663] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 113.299131][ T6663] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 87104238 [ 113.309651][ T6663] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 113.319907][ T6667] ubi0: background thread "ubi_bgt0d" started, PID 6667 [ 113.332393][ T6669] ubi0: detaching mtd0 [ 113.337189][ T6669] ubi0: mtd0 is detached [ 113.341647][ T6669] ubi0: attaching mtd0 [ 113.346073][ T6669] ubi0: scanning is finished [ 113.378228][ T6669] ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) [ 113.386170][ T6669] ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes [ 113.393872][ T6669] ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 [ 113.400794][ T6669] ubi0: VID header offset: 64 (aligned 64), data offset: 128 [ 113.408155][ T6669] ubi0: good PEBs: 32, bad PEBs: 0, corrupted PEBs: 0 [ 113.414911][ T6669] ubi0: user volume: 0, internal volumes: 1, max. volumes count: 23 [ 113.422855][ T6669] ubi0: max/mean erase counter: 1/1, WL threshold: 4096, image sequence number: 87104238 [ 113.432653][ T6669] ubi0: available PEBs: 28, total reserved PEBs: 4, PEBs reserved for bad PEB handling: 0 [ 113.442582][ T6675] ubi0: background thread "ubi_bgt0d" started, PID 6675 [ 118.897809][ T6676] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88811f202820 (size 32): comm "syz-executor.0", pid 6654, jiffies 4294948022 (age 13.860s) hex dump (first 32 bytes): 75 00 00 08 00 00 00 00 49 eb 38 1f 81 88 ff ff u.......I.8..... d8 6c 1d 1f 81 88 ff ff 01 00 00 00 02 00 00 00 .l.............. backtrace: [<0000000031a505f0>] erase_aeb+0x25/0x110 [<00000000d8e0722f>] ubi_wl_init+0x191/0x5c0 [<000000000c7c6379>] ubi_attach+0x63b/0x1879 [<000000007904d09f>] ubi_attach_mtd_dev+0x65c/0xd30 [<00000000e617b256>] ctrl_cdev_ioctl+0x144/0x1b0 [<00000000a2146de3>] ksys_ioctl+0xa6/0xd0 [<000000006d24db01>] __x64_sys_ioctl+0x1a/0x20 [<0000000070534a21>] do_syscall_64+0x4c/0xe0 [<00000000d9396619>] entry_SYSCALL_64_after_hwframe+0x44/0xa9