[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 116.381038][ T33] kauditd_printk_skb: 4 callbacks suppressed [ 116.381094][ T33] audit: type=1800 audit(1582807966.426:39): pid=11296 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 116.429961][ T33] audit: type=1800 audit(1582807966.466:40): pid=11296 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 [ 117.166562][ T33] audit: type=1400 audit(1582807967.216:41): avc: denied { map } for pid=11465 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 [ 117.197994][T11465] bash (11465) used greatest stack depth: 3352 bytes left Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.104' (ECDSA) to the list of known hosts. syzkaller login: [ 1028.939670][ T33] audit: type=1400 audit(1582808878.986:42): avc: denied { map } for pid=11484 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=2339 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2020/02/27 13:07:59 parsed 1 programs [ 1033.947561][ T33] audit: type=1400 audit(1582808883.996:43): avc: denied { integrity } for pid=11484 comm="syz-execprog" lockdown_reason="debugfs access" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=lockdown permissive=1 [ 1034.053048][ T33] audit: type=1400 audit(1582808884.106:44): avc: denied { map } for pid=11484 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=17354 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2020/02/27 13:08:07 executed programs: 0 [ 1037.476648][T11501] IPVS: ftp: loaded support on port[0] = 21 [ 1037.585059][T11501] chnl_net:caif_netlink_parms(): no params data found [ 1037.664019][T11501] bridge0: port 1(bridge_slave_0) entered blocking state [ 1037.671162][T11501] bridge0: port 1(bridge_slave_0) entered disabled state [ 1037.679999][T11501] device bridge_slave_0 entered promiscuous mode [ 1037.690763][T11501] bridge0: port 2(bridge_slave_1) entered blocking state [ 1037.698031][T11501] bridge0: port 2(bridge_slave_1) entered disabled state [ 1037.706659][T11501] device bridge_slave_1 entered promiscuous mode [ 1037.734978][T11501] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1037.748613][T11501] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1037.777182][T11501] team0: Port device team_slave_0 added [ 1037.787271][T11501] team0: Port device team_slave_1 added [ 1037.810733][T11501] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1037.817954][T11501] 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. [ 1037.843917][T11501] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1037.857676][T11501] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1037.864741][T11501] 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. [ 1037.890709][T11501] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1037.965301][T11501] device hsr_slave_0 entered promiscuous mode [ 1038.002511][T11501] device hsr_slave_1 entered promiscuous mode [ 1038.160065][ T33] audit: type=1400 audit(1582808888.206:45): avc: denied { create } for pid=11501 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 [ 1038.186526][ T33] audit: type=1400 audit(1582808888.236:46): avc: denied { write } for pid=11501 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 [ 1038.190247][T11501] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1038.211532][ T33] audit: type=1400 audit(1582808888.236:47): avc: denied { read } for pid=11501 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 [ 1038.266956][T11501] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1038.327118][T11501] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1038.387170][T11501] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1038.479040][T11501] bridge0: port 2(bridge_slave_1) entered blocking state [ 1038.486298][T11501] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1038.494140][T11501] bridge0: port 1(bridge_slave_0) entered blocking state [ 1038.501287][T11501] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1038.573725][ T31] bridge0: port 1(bridge_slave_0) entered disabled state [ 1038.583590][ T31] bridge0: port 2(bridge_slave_1) entered disabled state [ 1038.617203][T11501] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1038.638844][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 1038.647226][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1038.662887][T11501] 8021q: adding VLAN 0 to HW filter on device team0 [ 1038.677977][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 1038.687193][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1038.696500][ T3397] bridge0: port 1(bridge_slave_0) entered blocking state [ 1038.703650][ T3397] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1038.720391][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 1038.729995][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1038.739247][ T2741] bridge0: port 2(bridge_slave_1) entered blocking state [ 1038.746435][ T2741] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1038.761300][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 1038.783101][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 1038.804521][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 1038.814887][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1038.824549][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 1038.834006][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1038.844733][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1038.858770][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 1038.867882][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1038.889794][T11501] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1038.902835][T11501] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1038.911479][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 1038.920572][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1038.954274][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1038.962032][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1038.983208][T11501] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1039.018407][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 1039.028194][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1039.064259][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 1039.073709][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1039.088146][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1039.098629][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1039.111659][T11501] device veth0_vlan entered promiscuous mode [ 1039.131434][T11501] device veth1_vlan entered promiscuous mode [ 1039.174386][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1039.183395][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1039.191962][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1039.200842][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1039.217856][T11501] device veth0_macvtap entered promiscuous mode [ 1039.231708][T11501] device veth1_macvtap entered promiscuous mode [ 1039.265170][T11501] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1039.272653][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1039.281592][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1039.294011][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1039.303717][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1039.322165][T11501] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1039.329649][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1039.339340][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1039.559052][ T33] audit: type=1400 audit(1582808889.606:48): avc: denied { associate } for pid=11501 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 [ 1039.683615][ T33] audit: type=1400 audit(1582808889.736:49): avc: denied { create } for pid=11529 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_netfilter_socket permissive=1 [ 1039.709085][ T33] audit: type=1400 audit(1582808889.736:50): avc: denied { ioctl } for pid=11529 comm="syz-executor.0" path="socket:[29963]" dev="sockfs" ino=29963 ioctlcmd=0x89ed scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 1040.235658][T11583] ===================================================== [ 1040.242841][T11583] BUG: KMSAN: use-after-free in __list_add_valid+0x280/0x420 [ 1040.250193][T11583] CPU: 0 PID: 11583 Comm: syz-executor.0 Not tainted 5.6.0-rc2-syzkaller #0 [ 1040.258889][T11583] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1040.268920][T11583] Call Trace: [ 1040.272191][T11583] dump_stack+0x1c9/0x220 [ 1040.276503][T11583] kmsan_report+0xf7/0x1e0 [ 1040.280899][T11583] __msan_warning+0x58/0xa0 [ 1040.285386][T11583] __list_add_valid+0x280/0x420 [ 1040.290218][T11583] rdma_listen+0x623/0x10b0 [ 1040.294698][T11583] ? kmsan_set_origin_checked+0x95/0xf0 [ 1040.300234][T11583] ? kmsan_get_metadata+0x11d/0x180 [ 1040.305415][T11583] ucma_listen+0x36c/0x5e0 [ 1040.309814][T11583] ? ucma_connect+0xa40/0xa40 [ 1040.314468][T11583] ucma_write+0x5c5/0x630 [ 1040.318782][T11583] ? ucma_get_global_nl_info+0xe0/0xe0 [ 1040.324217][T11583] __vfs_write+0x1a9/0xca0 [ 1040.328620][T11583] ? rw_verify_area+0x2c4/0x5b0 [ 1040.333453][T11583] ? kmsan_get_metadata+0x11d/0x180 [ 1040.338629][T11583] vfs_write+0x44a/0x8f0 [ 1040.342858][T11583] ksys_write+0x267/0x450 [ 1040.347190][T11583] __ia32_sys_write+0xdb/0x120 [ 1040.351930][T11583] ? __se_sys_write+0xb0/0xb0 [ 1040.356605][T11583] do_fast_syscall_32+0x3c7/0x6e0 [ 1040.361613][T11583] entry_SYSENTER_compat+0x68/0x77 [ 1040.366696][T11583] RIP: 0023:0xf7fe8d99 [ 1040.370742][T11583] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 1040.390434][T11583] RSP: 002b:00000000f7fc20cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 1040.398822][T11583] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000140 [ 1040.406810][T11583] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 1040.414757][T11583] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1040.422703][T11583] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1040.430651][T11583] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1040.438606][T11583] [ 1040.440918][T11583] Uninit was created at: [ 1040.445191][T11583] kmsan_internal_poison_shadow+0x66/0xd0 [ 1040.450894][T11583] kmsan_slab_free+0x6e/0xb0 [ 1040.455463][T11583] kfree+0x565/0x30a0 [ 1040.459421][T11583] skb_release_data+0x7ea/0xa10 [ 1040.464246][T11583] __kfree_skb+0x90/0x240 [ 1040.468548][T11583] consume_skb+0x2ae/0x320 [ 1040.472938][T11583] skb_free_datagram+0x52/0x180 [ 1040.477764][T11583] netlink_recvmsg+0xd7f/0x1910 [ 1040.482591][T11583] ____sys_recvmsg+0x1173/0x1240 [ 1040.487507][T11583] __sys_recvmsg+0x564/0xaf0 [ 1040.492075][T11583] __se_sys_recvmsg+0x97/0xb0 [ 1040.496756][T11583] __x64_sys_recvmsg+0x4a/0x70 [ 1040.501498][T11583] do_syscall_64+0xb8/0x160 [ 1040.506014][T11583] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1040.511882][T11583] ===================================================== [ 1040.518787][T11583] Disabling lock debugging due to kernel taint [ 1040.524914][T11583] Kernel panic - not syncing: panic_on_warn set ... [ 1040.531476][T11583] CPU: 0 PID: 11583 Comm: syz-executor.0 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 1040.541506][T11583] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1040.551537][T11583] Call Trace: [ 1040.554808][T11583] dump_stack+0x1c9/0x220 [ 1040.559119][T11583] panic+0x3d5/0xc3e [ 1040.563012][T11583] kmsan_report+0x1df/0x1e0 [ 1040.567498][T11583] __msan_warning+0x58/0xa0 [ 1040.571985][T11583] __list_add_valid+0x280/0x420 [ 1040.576861][T11583] rdma_listen+0x623/0x10b0 [ 1040.581343][T11583] ? kmsan_set_origin_checked+0x95/0xf0 [ 1040.586868][T11583] ? kmsan_get_metadata+0x11d/0x180 [ 1040.592048][T11583] ucma_listen+0x36c/0x5e0 [ 1040.596445][T11583] ? ucma_connect+0xa40/0xa40 [ 1040.601095][T11583] ucma_write+0x5c5/0x630 [ 1040.605408][T11583] ? ucma_get_global_nl_info+0xe0/0xe0 [ 1040.610874][T11583] __vfs_write+0x1a9/0xca0 [ 1040.615280][T11583] ? rw_verify_area+0x2c4/0x5b0 [ 1040.620109][T11583] ? kmsan_get_metadata+0x11d/0x180 [ 1040.625285][T11583] vfs_write+0x44a/0x8f0 [ 1040.629514][T11583] ksys_write+0x267/0x450 [ 1040.633828][T11583] __ia32_sys_write+0xdb/0x120 [ 1040.638572][T11583] ? __se_sys_write+0xb0/0xb0 [ 1040.643224][T11583] do_fast_syscall_32+0x3c7/0x6e0 [ 1040.648234][T11583] entry_SYSENTER_compat+0x68/0x77 [ 1040.653317][T11583] RIP: 0023:0xf7fe8d99 [ 1040.657363][T11583] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 1040.676951][T11583] RSP: 002b:00000000f7fc20cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 1040.685341][T11583] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000140 [ 1040.693318][T11583] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 1040.701266][T11583] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1040.709213][T11583] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1040.717173][T11583] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1040.726310][T11583] Kernel Offset: 0x3000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1040.737843][T11583] Rebooting in 86400 seconds..