Warning: Permanently added '10.128.0.209' (ECDSA) to the list of known hosts. syzkaller login: [ 1015.160244][ T32] audit: type=1400 audit(1582602980.204:42): avc: denied { map } for pid=11151 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 2020/02/25 03:56:20 parsed 1 programs [ 1020.160166][ T32] audit: type=1400 audit(1582602985.204:43): avc: denied { integrity } for pid=11151 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 [ 1020.260570][ T32] audit: type=1400 audit(1582602985.304:44): avc: denied { map } for pid=11151 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=105 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2020/02/25 03:56:28 executed programs: 0 [ 1023.758247][T11169] IPVS: ftp: loaded support on port[0] = 21 [ 1023.868291][T11169] chnl_net:caif_netlink_parms(): no params data found [ 1023.948536][T11169] bridge0: port 1(bridge_slave_0) entered blocking state [ 1023.955997][T11169] bridge0: port 1(bridge_slave_0) entered disabled state [ 1023.964847][T11169] device bridge_slave_0 entered promiscuous mode [ 1023.976331][T11169] bridge0: port 2(bridge_slave_1) entered blocking state [ 1023.984317][T11169] bridge0: port 2(bridge_slave_1) entered disabled state [ 1023.992584][T11169] device bridge_slave_1 entered promiscuous mode [ 1024.021715][T11169] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1024.036316][T11169] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1024.065698][T11169] team0: Port device team_slave_0 added [ 1024.076609][T11169] team0: Port device team_slave_1 added [ 1024.101542][T11169] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1024.108656][T11169] 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. [ 1024.134880][T11169] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1024.148865][T11169] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1024.156041][T11169] 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. [ 1024.182062][T11169] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1024.257084][T11169] device hsr_slave_0 entered promiscuous mode [ 1024.304171][T11169] device hsr_slave_1 entered promiscuous mode [ 1024.469262][ T32] audit: type=1400 audit(1582602989.514:45): avc: denied { create } for pid=11169 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 [ 1024.495772][ T32] audit: type=1400 audit(1582602989.544:46): avc: denied { write } for pid=11169 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 [ 1024.499688][T11169] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1024.520836][ T32] audit: type=1400 audit(1582602989.544:47): avc: denied { read } for pid=11169 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 [ 1024.578882][T11169] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1024.638774][T11169] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1024.698932][T11169] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1024.791419][T11169] bridge0: port 2(bridge_slave_1) entered blocking state [ 1024.798670][T11169] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1024.806508][T11169] bridge0: port 1(bridge_slave_0) entered blocking state [ 1024.813767][T11169] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1024.907023][T11169] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1024.917235][ T30] bridge0: port 1(bridge_slave_0) entered disabled state [ 1024.927284][ T30] bridge0: port 2(bridge_slave_1) entered disabled state [ 1024.937291][ T30] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1024.964681][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 1024.973226][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1024.987089][T11169] 8021q: adding VLAN 0 to HW filter on device team0 [ 1025.001324][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 1025.011059][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1025.019856][T11177] bridge0: port 1(bridge_slave_0) entered blocking state [ 1025.027118][T11177] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1025.042269][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 1025.051981][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1025.061336][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 1025.068618][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1025.086561][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 1025.103859][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 1025.129139][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 1025.139667][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1025.149824][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 1025.160447][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1025.171971][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1025.186016][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 1025.195080][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1025.218804][T11169] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1025.231773][T11169] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1025.241808][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 1025.251682][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1025.287348][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1025.295032][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1025.316896][T11169] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1025.356778][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 1025.366088][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1025.401930][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 1025.411263][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1025.423363][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1025.432450][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1025.447529][T11169] device veth0_vlan entered promiscuous mode [ 1025.469365][T11169] device veth1_vlan entered promiscuous mode [ 1025.511651][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1025.520435][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1025.529347][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1025.538388][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1025.556536][T11169] device veth0_macvtap entered promiscuous mode [ 1025.571405][T11169] device veth1_macvtap entered promiscuous mode [ 1025.606142][T11169] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1025.614177][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1025.623205][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1025.632327][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1025.641390][T11177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1025.660659][T11169] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1025.668370][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1025.677949][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1025.900103][ T32] audit: type=1400 audit(1582602990.944:48): avc: denied { associate } for pid=11169 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 2020/02/25 03:56:33 executed programs: 46 [ 1029.659903][T11575] ===================================================== [ 1029.666911][T11575] BUG: KMSAN: use-after-free in __list_add_valid+0x280/0x420 [ 1029.674273][T11575] CPU: 0 PID: 11575 Comm: syz-executor.0 Not tainted 5.6.0-rc2-syzkaller #0 [ 1029.682972][T11575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1029.693011][T11575] Call Trace: [ 1029.696459][T11575] dump_stack+0x1c9/0x220 [ 1029.700846][T11575] kmsan_report+0xf7/0x1e0 [ 1029.705250][T11575] __msan_warning+0x58/0xa0 [ 1029.709740][T11575] __list_add_valid+0x280/0x420 [ 1029.714618][T11575] rdma_listen+0x623/0x10b0 [ 1029.719103][T11575] ? kmsan_set_origin_checked+0x95/0xf0 [ 1029.724636][T11575] ? kmsan_get_metadata+0x11d/0x180 [ 1029.729850][T11575] ucma_listen+0x36c/0x5e0 [ 1029.734273][T11575] ? ucma_connect+0xa40/0xa40 [ 1029.738943][T11575] ucma_write+0x5c5/0x630 [ 1029.743280][T11575] ? ucma_get_global_nl_info+0xe0/0xe0 [ 1029.748738][T11575] __vfs_write+0x1a9/0xca0 [ 1029.753147][T11575] ? rw_verify_area+0x2c4/0x5b0 [ 1029.757985][T11575] ? kmsan_get_metadata+0x11d/0x180 [ 1029.763178][T11575] vfs_write+0x44a/0x8f0 [ 1029.767412][T11575] ksys_write+0x267/0x450 [ 1029.771754][T11575] __ia32_sys_write+0xdb/0x120 [ 1029.776524][T11575] ? __se_sys_write+0xb0/0xb0 [ 1029.781189][T11575] do_fast_syscall_32+0x3c7/0x6e0 [ 1029.786259][T11575] entry_SYSENTER_compat+0x68/0x77 [ 1029.791353][T11575] RIP: 0023:0xf7f95d99 [ 1029.795419][T11575] 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 [ 1029.815075][T11575] RSP: 002b:00000000f7f6f0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 1029.823477][T11575] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000140 [ 1029.831459][T11575] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 1029.839428][T11575] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1029.847428][T11575] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1029.855430][T11575] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1029.863408][T11575] [ 1029.865730][T11575] Uninit was created at: [ 1029.869968][T11575] kmsan_internal_poison_shadow+0x66/0xd0 [ 1029.875673][T11575] kmsan_slab_free+0x6e/0xb0 [ 1029.880243][T11575] kfree+0x565/0x30a0 [ 1029.884290][T11575] skb_release_data+0x7ea/0xa10 [ 1029.889123][T11575] __kfree_skb+0x90/0x240 [ 1029.893443][T11575] kfree_skb+0x2b9/0x320 [ 1029.897752][T11575] __netif_receive_skb_core+0x50b4/0x5840 [ 1029.903467][T11575] process_backlog+0x936/0x1410 [ 1029.908319][T11575] net_rx_action+0x786/0x1aa0 [ 1029.912997][T11575] __do_softirq+0x311/0x83d [ 1029.917483][T11575] ===================================================== [ 1029.924416][T11575] Disabling lock debugging due to kernel taint [ 1029.930551][T11575] Kernel panic - not syncing: panic_on_warn set ... [ 1029.937133][T11575] CPU: 0 PID: 11575 Comm: syz-executor.0 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 1029.947175][T11575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1029.957222][T11575] Call Trace: [ 1029.960500][T11575] dump_stack+0x1c9/0x220 [ 1029.964838][T11575] panic+0x3d5/0xc3e [ 1029.968753][T11575] kmsan_report+0x1df/0x1e0 [ 1029.973256][T11575] __msan_warning+0x58/0xa0 [ 1029.977754][T11575] __list_add_valid+0x280/0x420 [ 1029.982606][T11575] rdma_listen+0x623/0x10b0 [ 1029.987106][T11575] ? kmsan_set_origin_checked+0x95/0xf0 [ 1029.992658][T11575] ? kmsan_get_metadata+0x11d/0x180 [ 1029.997845][T11575] ucma_listen+0x36c/0x5e0 [ 1030.002255][T11575] ? ucma_connect+0xa40/0xa40 [ 1030.006916][T11575] ucma_write+0x5c5/0x630 [ 1030.011241][T11575] ? ucma_get_global_nl_info+0xe0/0xe0 [ 1030.016817][T11575] __vfs_write+0x1a9/0xca0 [ 1030.021231][T11575] ? rw_verify_area+0x2c4/0x5b0 [ 1030.026073][T11575] ? kmsan_get_metadata+0x11d/0x180 [ 1030.031259][T11575] vfs_write+0x44a/0x8f0 [ 1030.035519][T11575] ksys_write+0x267/0x450 [ 1030.039855][T11575] __ia32_sys_write+0xdb/0x120 [ 1030.044609][T11575] ? __se_sys_write+0xb0/0xb0 [ 1030.049270][T11575] do_fast_syscall_32+0x3c7/0x6e0 [ 1030.054299][T11575] entry_SYSENTER_compat+0x68/0x77 [ 1030.059388][T11575] RIP: 0023:0xf7f95d99 [ 1030.063446][T11575] 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 [ 1030.083045][T11575] RSP: 002b:00000000f7f6f0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 1030.091442][T11575] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000140 [ 1030.099412][T11575] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 1030.107370][T11575] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1030.115330][T11575] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1030.123292][T11575] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1030.132651][T11575] Kernel Offset: 0x25c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1030.144384][T11575] Rebooting in 86400 seconds..