[ 26.967205][ T26] audit: type=1800 audit(1578178273.645:40): pid=6970 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 31.498350][ T26] audit: type=1400 audit(1578178278.205:41): avc: denied { map } for pid=7141 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts. 2020/01/04 23:07:55 parsed 1 programs [ 1028.568742][ T26] audit: type=1400 audit(1578179275.275:42): avc: denied { map } for pid=7156 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 1030.048945][ T26] audit: type=1400 audit(1578179276.755:43): avc: denied { map } for pid=7156 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=16820 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 1030.051243][ T3805] kmemleak: Automatic memory scanning thread ended 2020/01/04 23:08:03 executed programs: 0 [ 1036.900448][ T7173] IPVS: ftp: loaded support on port[0] = 21 [ 1036.919128][ T7173] chnl_net:caif_netlink_parms(): no params data found [ 1036.931003][ T7173] bridge0: port 1(bridge_slave_0) entered blocking state [ 1036.938262][ T7173] bridge0: port 1(bridge_slave_0) entered disabled state [ 1036.945458][ T7173] device bridge_slave_0 entered promiscuous mode [ 1036.952392][ T7173] bridge0: port 2(bridge_slave_1) entered blocking state [ 1036.959578][ T7173] bridge0: port 2(bridge_slave_1) entered disabled state [ 1036.966883][ T7173] device bridge_slave_1 entered promiscuous mode [ 1036.975781][ T7173] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1036.985375][ T7173] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1036.996776][ T7173] team0: Port device team_slave_0 added [ 1037.002773][ T7173] team0: Port device team_slave_1 added [ 1037.056906][ T7173] device hsr_slave_0 entered promiscuous mode [ 1037.106359][ T7173] device hsr_slave_1 entered promiscuous mode [ 1037.168590][ T26] audit: type=1400 audit(1578179283.875:44): avc: denied { create } for pid=7173 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1037.168688][ T7173] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1037.195772][ T26] audit: type=1400 audit(1578179283.875:45): avc: denied { write } for pid=7173 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1037.224366][ T26] audit: type=1400 audit(1578179283.875:46): avc: denied { read } for pid=7173 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1037.257075][ T7173] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1037.297044][ T7173] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1037.337023][ T7173] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1037.368984][ T7173] bridge0: port 2(bridge_slave_1) entered blocking state [ 1037.376025][ T7173] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1037.383286][ T7173] bridge0: port 1(bridge_slave_0) entered blocking state [ 1037.390311][ T7173] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1037.406111][ T7173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1037.414488][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1037.432384][ T272] bridge0: port 1(bridge_slave_0) entered disabled state [ 1037.450605][ T272] bridge0: port 2(bridge_slave_1) entered disabled state [ 1037.457940][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1037.466499][ T7173] 8021q: adding VLAN 0 to HW filter on device team0 [ 1037.474533][ T3560] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1037.482906][ T3560] bridge0: port 1(bridge_slave_0) entered blocking state [ 1037.489931][ T3560] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1037.503832][ T7173] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1037.514567][ T7173] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1037.525608][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1037.534051][ T272] bridge0: port 2(bridge_slave_1) entered blocking state [ 1037.541103][ T272] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1037.548674][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1037.556835][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1037.564798][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1037.572730][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1037.580672][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1037.587979][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1037.598032][ T3560] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1037.605477][ T3560] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1037.614369][ T7173] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1037.624985][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1037.636873][ T7173] device veth0_vlan entered promiscuous mode [ 1037.644394][ T7173] device veth1_vlan entered promiscuous mode [ 1037.650883][ T7176] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1037.658778][ T7176] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1037.666098][ T7176] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1037.673600][ T7176] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1037.683886][ T26] audit: type=1400 audit(1578179284.385:47): avc: denied { associate } for pid=7173 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 1037.926424][ T7176] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1043.753312][ T7183] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888118a0b0a0 (size 32): comm "syz-executor.0", pid 7182, jiffies 4295041052 (age 8.090s) hex dump (first 32 bytes): 00 64 6d 61 62 75 66 3a 00 00 00 00 00 00 00 00 .dmabuf:........ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000c627d1fd>] __kmalloc_track_caller+0x165/0x300 [<00000000c4d79001>] memdup_user+0x26/0xc0 [<000000004213f220>] strndup_user+0x62/0x80 [<00000000bec304ba>] dma_buf_ioctl+0x60/0x1e0 [<00000000c40487da>] do_vfs_ioctl+0x551/0x890 [<0000000028eade7d>] ksys_ioctl+0x86/0xb0 [<0000000023319e8f>] __x64_sys_ioctl+0x1e/0x30 [<00000000be1db2a2>] do_syscall_64+0x73/0x220 [<00000000ea3ab38a>] entry_SYSCALL_64_after_hwframe+0x44/0xa9