Starting Update UTMP about System Runlevel Changes... [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. 2020/09/08 17:17:36 parsed 1 programs syzkaller login: [ 555.136250][ T3679] kmemleak: Automatic memory scanning thread ended 2020/09/08 17:17:44 executed programs: 0 [ 562.945474][ T25] audit: type=1400 audit(1599585464.414:8): avc: denied { execmem } for pid=6480 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 564.040160][ T6481] IPVS: ftp: loaded support on port[0] = 21 [ 564.099789][ T6481] chnl_net:caif_netlink_parms(): no params data found [ 564.168183][ T6481] bridge0: port 1(bridge_slave_0) entered blocking state [ 564.176052][ T6481] bridge0: port 1(bridge_slave_0) entered disabled state [ 564.183741][ T6481] device bridge_slave_0 entered promiscuous mode [ 564.190683][ T6481] bridge0: port 2(bridge_slave_1) entered blocking state [ 564.198063][ T6481] bridge0: port 2(bridge_slave_1) entered disabled state [ 564.205850][ T6481] device bridge_slave_1 entered promiscuous mode [ 564.217054][ T6481] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 564.227542][ T6481] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 564.242774][ T6481] team0: Port device team_slave_0 added [ 564.249163][ T6481] team0: Port device team_slave_1 added [ 564.259086][ T6481] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 564.266332][ T6481] 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. [ 564.296211][ T6481] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 564.307413][ T6481] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 564.314381][ T6481] 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. [ 564.340285][ T6481] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 564.356498][ T6481] device hsr_slave_0 entered promiscuous mode [ 564.363142][ T6481] device hsr_slave_1 entered promiscuous mode [ 564.394638][ T6481] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 564.402625][ T6481] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 564.410664][ T6481] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 564.418980][ T6481] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 564.431358][ T6481] bridge0: port 2(bridge_slave_1) entered blocking state [ 564.438643][ T6481] bridge0: port 2(bridge_slave_1) entered forwarding state [ 564.446380][ T6481] bridge0: port 1(bridge_slave_0) entered blocking state [ 564.453577][ T6481] bridge0: port 1(bridge_slave_0) entered forwarding state [ 564.472731][ T6481] 8021q: adding VLAN 0 to HW filter on device bond0 [ 564.482083][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 564.490247][ T6143] bridge0: port 1(bridge_slave_0) entered disabled state [ 564.499074][ T6143] bridge0: port 2(bridge_slave_1) entered disabled state [ 564.506875][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 564.515926][ T6481] 8021q: adding VLAN 0 to HW filter on device team0 [ 564.524281][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 564.532798][ T6459] bridge0: port 1(bridge_slave_0) entered blocking state [ 564.539878][ T6459] bridge0: port 1(bridge_slave_0) entered forwarding state [ 564.555524][ T6481] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 564.566256][ T6481] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 564.577944][ T6700] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 564.586566][ T6700] bridge0: port 2(bridge_slave_1) entered blocking state [ 564.593618][ T6700] bridge0: port 2(bridge_slave_1) entered forwarding state [ 564.601346][ T6700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 564.609530][ T6700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 564.618254][ T6700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 564.626754][ T6700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 564.639849][ T6481] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 564.647617][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 564.655054][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 564.662478][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 564.670365][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 564.687311][ T6481] device veth0_vlan entered promiscuous mode [ 564.694184][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 564.703010][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 564.712487][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 564.720294][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 564.730316][ T6481] device veth1_vlan entered promiscuous mode [ 564.742376][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 564.750294][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 564.758568][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 564.768302][ T6481] device veth0_macvtap entered promiscuous mode [ 564.776093][ T6481] device veth1_macvtap entered promiscuous mode [ 564.787326][ T6481] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 564.795229][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 564.803984][ T6143] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 564.813318][ T6481] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 564.820827][ T6459] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 564.830640][ T6481] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 564.839729][ T6481] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 564.848837][ T6481] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 564.857971][ T6481] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 566.111544][ T6143] Bluetooth: hci0: command 0x0409 tx timeout [ 568.191252][ T6459] Bluetooth: hci0: command 0x041b tx timeout [ 570.281423][ T6459] Bluetooth: hci0: command 0x040f tx timeout 2020/09/08 17:17:52 executed programs: 1 [ 572.351279][ T6698] Bluetooth: hci0: command 0x0419 tx timeout 2020/09/08 17:17:58 executed programs: 3 2020/09/08 17:18:04 executed programs: 5 2020/09/08 17:18:10 executed programs: 7 [ 594.669444][ T6786] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff8881186a5900 (size 224): comm "syz-executor.0", pid 6765, jiffies 4294995584 (age 13.880s) hex dump (first 32 bytes): a0 bc 0c 13 81 88 ff ff a0 bc 0c 13 81 88 ff ff ................ 00 40 4f 12 81 88 ff ff 00 00 00 00 00 00 00 00 .@O............. backtrace: [<0000000081d840e4>] __build_skb+0x1f/0x100 [<000000006840a203>] __napi_alloc_skb+0xe5/0x140 [<0000000032003575>] napi_get_frags+0x3a/0x70 [<0000000076e18b70>] tun_get_user+0xa43/0x1660 [<000000005dc9ab9d>] tun_chr_write_iter+0x66/0xa0 [<00000000c4b989f1>] new_sync_write+0x173/0x210 [<00000000e7415139>] vfs_write+0x21d/0x280 [<000000002af4b2f1>] ksys_write+0x72/0x120 [<0000000014e3e750>] do_syscall_64+0x2d/0x70 [<000000006bfa2497>] entry_SYSCALL_64_after_hwframe+0x44/0xa9