[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 118.368085][ T32] kauditd_printk_skb: 4 callbacks suppressed [ 118.368134][ T32] audit: type=1800 audit(1582760036.413:39): pid=11067 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 [ 118.396390][ T32] audit: type=1800 audit(1582760036.423:40): pid=11067 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 [ 119.384516][ T32] audit: type=1400 audit(1582760037.433:41): avc: denied { map } for pid=11243 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.27' (ECDSA) to the list of known hosts. syzkaller login: [ 1009.600523][ T32] audit: type=1400 audit(1582760927.643:42): avc: denied { map } for pid=11255 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 2020/02/26 23:48:47 parsed 1 programs [ 1014.773695][ T32] audit: type=1400 audit(1582760932.823:43): avc: denied { integrity } for pid=11255 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 [ 1014.882887][ T32] audit: type=1400 audit(1582760932.933:44): avc: denied { map } for pid=11255 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=17430 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2020/02/26 23:48:56 executed programs: 0 [ 1018.458102][T11271] IPVS: ftp: loaded support on port[0] = 21 [ 1018.574119][T11271] chnl_net:caif_netlink_parms(): no params data found [ 1018.658895][T11271] bridge0: port 1(bridge_slave_0) entered blocking state [ 1018.666398][T11271] bridge0: port 1(bridge_slave_0) entered disabled state [ 1018.675710][T11271] device bridge_slave_0 entered promiscuous mode [ 1018.686469][T11271] bridge0: port 2(bridge_slave_1) entered blocking state [ 1018.693830][T11271] bridge0: port 2(bridge_slave_1) entered disabled state [ 1018.703115][T11271] device bridge_slave_1 entered promiscuous mode [ 1018.732226][T11271] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1018.747344][T11271] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1018.778077][T11271] team0: Port device team_slave_0 added [ 1018.788389][T11271] team0: Port device team_slave_1 added [ 1018.813211][T11271] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1018.820290][T11271] 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. [ 1018.846586][T11271] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1018.860637][T11271] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1018.867831][T11271] 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. [ 1018.893862][T11271] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1018.955621][T11271] device hsr_slave_0 entered promiscuous mode [ 1019.002830][T11271] device hsr_slave_1 entered promiscuous mode [ 1019.198010][ T32] audit: type=1400 audit(1582760937.243:45): avc: denied { create } for pid=11271 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 [ 1019.224771][ T32] audit: type=1400 audit(1582760937.273:46): avc: denied { write } for pid=11271 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 [ 1019.228557][T11271] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1019.249712][ T32] audit: type=1400 audit(1582760937.273:47): avc: denied { read } for pid=11271 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 [ 1019.317146][T11271] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1019.387791][T11271] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1019.447645][T11271] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1019.540963][T11271] bridge0: port 2(bridge_slave_1) entered blocking state [ 1019.548190][T11271] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1019.556071][T11271] bridge0: port 1(bridge_slave_0) entered blocking state [ 1019.563387][T11271] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1019.624772][ T31] bridge0: port 1(bridge_slave_0) entered disabled state [ 1019.634445][ T31] bridge0: port 2(bridge_slave_1) entered disabled state [ 1019.684563][T11271] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1019.706809][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 1019.715189][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1019.733324][T11271] 8021q: adding VLAN 0 to HW filter on device team0 [ 1019.748427][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 1019.758103][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1019.768645][ T3917] bridge0: port 1(bridge_slave_0) entered blocking state [ 1019.775895][ T3917] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1019.791002][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 1019.801293][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1019.810822][ T3399] bridge0: port 2(bridge_slave_1) entered blocking state [ 1019.818002][ T3399] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1019.835048][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 1019.853872][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 1019.874963][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 1019.884696][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1019.903526][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1019.913083][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 1019.923111][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1019.937303][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 1019.946889][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1019.969653][T11271] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1019.982297][T11271] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1019.992359][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 1020.001470][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1020.037334][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1020.046558][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1020.068709][T11271] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1020.108032][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 1020.118219][ T3917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1020.154581][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 1020.163639][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1020.180163][T11271] device veth0_vlan entered promiscuous mode [ 1020.188248][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1020.197906][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1020.221301][T11271] device veth1_vlan entered promiscuous mode [ 1020.268358][T11280] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1020.277458][T11280] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1020.287042][T11280] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1020.297013][T11280] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1020.313448][T11271] device veth0_macvtap entered promiscuous mode [ 1020.329489][T11271] device veth1_macvtap entered promiscuous mode [ 1020.363907][T11271] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1020.371438][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1020.380523][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1020.389764][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1020.399610][ T3399] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1020.417211][T11271] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1020.424930][T11280] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1020.434958][T11280] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1020.670257][ T32] audit: type=1400 audit(1582760938.713:48): avc: denied { associate } for pid=11271 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 2020/02/26 23:49:01 executed programs: 44 [ 1023.608116][T11588] ===================================================== [ 1023.615104][T11588] BUG: KMSAN: use-after-free in __list_add_valid+0x280/0x420 [ 1023.622495][T11588] CPU: 0 PID: 11588 Comm: syz-executor.0 Not tainted 5.6.0-rc2-syzkaller #0 [ 1023.631146][T11588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1023.641213][T11588] Call Trace: [ 1023.644542][T11588] dump_stack+0x1c9/0x220 [ 1023.648863][T11588] kmsan_report+0xf7/0x1e0 [ 1023.653284][T11588] __msan_warning+0x58/0xa0 [ 1023.657793][T11588] __list_add_valid+0x280/0x420 [ 1023.662686][T11588] rdma_listen+0x623/0x10b0 [ 1023.667190][T11588] ? kmsan_set_origin_checked+0x95/0xf0 [ 1023.672804][T11588] ? kmsan_get_metadata+0x11d/0x180 [ 1023.678019][T11588] ucma_listen+0x36c/0x5e0 [ 1023.682457][T11588] ? ucma_connect+0xa40/0xa40 [ 1023.687116][T11588] ucma_write+0x5c5/0x630 [ 1023.691471][T11588] ? ucma_get_global_nl_info+0xe0/0xe0 [ 1023.696911][T11588] __vfs_write+0x1a9/0xca0 [ 1023.701334][T11588] ? rw_verify_area+0x2c4/0x5b0 [ 1023.706170][T11588] ? kmsan_get_metadata+0x11d/0x180 [ 1023.711348][T11588] vfs_write+0x44a/0x8f0 [ 1023.715581][T11588] ksys_write+0x267/0x450 [ 1023.719897][T11588] __ia32_sys_write+0xdb/0x120 [ 1023.724648][T11588] ? __se_sys_write+0xb0/0xb0 [ 1023.729316][T11588] do_fast_syscall_32+0x3c7/0x6e0 [ 1023.734385][T11588] entry_SYSENTER_compat+0x68/0x77 [ 1023.739477][T11588] RIP: 0023:0xf7f75d99 [ 1023.743524][T11588] 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 [ 1023.763109][T11588] RSP: 002b:00000000f7f4f0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 1023.771500][T11588] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000140 [ 1023.779451][T11588] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 1023.787402][T11588] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1023.795350][T11588] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1023.803317][T11588] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1023.811280][T11588] [ 1023.813586][T11588] Uninit was created at: [ 1023.817818][T11588] kmsan_internal_poison_shadow+0x66/0xd0 [ 1023.823517][T11588] kmsan_slab_free+0x6e/0xb0 [ 1023.828086][T11588] kfree+0x565/0x30a0 [ 1023.832050][T11588] rdma_destroy_id+0x197e/0x1b40 [ 1023.836969][T11588] ucma_close+0x334/0x4c0 [ 1023.841278][T11588] __fput+0x4c7/0xb90 [ 1023.845237][T11588] ____fput+0x37/0x40 [ 1023.849198][T11588] task_work_run+0x214/0x2b0 [ 1023.853804][T11588] prepare_exit_to_usermode+0x3c8/0x520 [ 1023.859366][T11588] syscall_return_slowpath+0x95/0x5f0 [ 1023.864747][T11588] do_fast_syscall_32+0x422/0x6e0 [ 1023.869749][T11588] entry_SYSENTER_compat+0x68/0x77 [ 1023.874831][T11588] ===================================================== [ 1023.881742][T11588] Disabling lock debugging due to kernel taint [ 1023.887930][T11588] Kernel panic - not syncing: panic_on_warn set ... [ 1023.894538][T11588] CPU: 0 PID: 11588 Comm: syz-executor.0 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 1023.904570][T11588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1023.914601][T11588] Call Trace: [ 1023.917876][T11588] dump_stack+0x1c9/0x220 [ 1023.922190][T11588] panic+0x3d5/0xc3e [ 1023.926084][T11588] kmsan_report+0x1df/0x1e0 [ 1023.930597][T11588] __msan_warning+0x58/0xa0 [ 1023.935235][T11588] __list_add_valid+0x280/0x420 [ 1023.940089][T11588] rdma_listen+0x623/0x10b0 [ 1023.944628][T11588] ? kmsan_set_origin_checked+0x95/0xf0 [ 1023.950184][T11588] ? kmsan_get_metadata+0x11d/0x180 [ 1023.955387][T11588] ucma_listen+0x36c/0x5e0 [ 1023.959797][T11588] ? ucma_connect+0xa40/0xa40 [ 1023.964492][T11588] ucma_write+0x5c5/0x630 [ 1023.968811][T11588] ? ucma_get_global_nl_info+0xe0/0xe0 [ 1023.974282][T11588] __vfs_write+0x1a9/0xca0 [ 1023.978684][T11588] ? rw_verify_area+0x2c4/0x5b0 [ 1023.983562][T11588] ? kmsan_get_metadata+0x11d/0x180 [ 1023.988800][T11588] vfs_write+0x44a/0x8f0 [ 1023.993143][T11588] ksys_write+0x267/0x450 [ 1023.997466][T11588] __ia32_sys_write+0xdb/0x120 [ 1024.002221][T11588] ? __se_sys_write+0xb0/0xb0 [ 1024.006879][T11588] do_fast_syscall_32+0x3c7/0x6e0 [ 1024.011929][T11588] entry_SYSENTER_compat+0x68/0x77 [ 1024.017026][T11588] RIP: 0023:0xf7f75d99 [ 1024.021071][T11588] 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 [ 1024.040670][T11588] RSP: 002b:00000000f7f4f0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 1024.049101][T11588] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000140 [ 1024.057094][T11588] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 1024.065132][T11588] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1024.073083][T11588] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1024.081038][T11588] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1024.090370][T11588] Kernel Offset: 0x1ca00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1024.102032][T11588] Rebooting in 86400 seconds..