syzkaller login: [ 171.226167][ T39] audit: type=1400 audit(1595784805.598:41): avc: denied { map } for pid=9569 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 '[localhost]:49908' (ECDSA) to the list of known hosts. [ 187.513173][ T39] audit: type=1400 audit(1595784821.888:42): avc: denied { map } for pid=9584 comm="syz-execprog" path="/syz-execprog" dev="sda1" ino=16526 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2020/07/26 17:33:42 parsed 1 programs [ 188.642078][ T39] audit: type=1400 audit(1595784823.018:43): avc: denied { integrity } for pid=9584 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 [ 188.715899][ T39] audit: type=1400 audit(1595784823.018:44): avc: denied { map } for pid=9584 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=1069 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2020/07/26 17:33:44 executed programs: 0 [ 189.997911][ T9601] IPVS: ftp: loaded support on port[0] = 21 [ 190.257116][ T9601] chnl_net:caif_netlink_parms(): no params data found [ 190.369986][ T9601] bridge0: port 1(bridge_slave_0) entered blocking state [ 190.385649][ T9601] bridge0: port 1(bridge_slave_0) entered disabled state [ 190.409961][ T9601] device bridge_slave_0 entered promiscuous mode [ 190.444382][ T9601] bridge0: port 2(bridge_slave_1) entered blocking state [ 190.457831][ T9601] bridge0: port 2(bridge_slave_1) entered disabled state [ 190.471574][ T9601] device bridge_slave_1 entered promiscuous mode [ 190.498435][ T9601] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 190.516503][ T9601] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 190.554115][ T9601] team0: Port device team_slave_0 added [ 190.576786][ T9601] team0: Port device team_slave_1 added [ 190.602525][ T9601] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 190.616105][ T9601] 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. [ 190.669845][ T9601] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 190.696520][ T9601] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 190.713196][ T9601] 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. [ 190.784214][ T9601] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 190.889410][ T9601] device hsr_slave_0 entered promiscuous mode [ 190.947586][ T9601] device hsr_slave_1 entered promiscuous mode [ 191.156305][ T39] audit: type=1400 audit(1595784825.538:45): avc: denied { create } for pid=9601 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 [ 191.163640][ T9601] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 191.205451][ T39] audit: type=1400 audit(1595784825.538:46): avc: denied { write } for pid=9601 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 [ 191.265670][ T39] audit: type=1400 audit(1595784825.538:47): avc: denied { read } for pid=9601 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 [ 191.393711][ T9601] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 191.488586][ T9601] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 191.588329][ T9601] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 191.778722][ T9601] 8021q: adding VLAN 0 to HW filter on device bond0 [ 191.793942][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 191.806484][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 192.058133][ T9601] 8021q: adding VLAN 0 to HW filter on device team0 [ 192.104614][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 192.126675][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 192.147206][ T18] bridge0: port 1(bridge_slave_0) entered blocking state [ 192.160430][ T18] bridge0: port 1(bridge_slave_0) entered forwarding state [ 192.188293][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 192.212905][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 192.232367][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 192.251190][ T3235] bridge0: port 2(bridge_slave_1) entered blocking state [ 192.268953][ T3235] bridge0: port 2(bridge_slave_1) entered forwarding state [ 192.334854][ T1223] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 192.361239][ T1223] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 192.387861][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 192.404164][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 192.423112][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 192.441723][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 192.459713][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 192.482819][ T9601] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 192.513487][ T9601] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 192.557054][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 192.580259][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 192.592250][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 192.603228][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 192.623325][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 192.662297][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 192.686909][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 192.725622][ T9601] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 192.772873][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 192.796126][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 192.831210][ T1223] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 192.853269][ T1223] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 192.883917][ T1223] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 192.899957][ T1223] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 192.920368][ T9601] device veth0_vlan entered promiscuous mode [ 192.941267][ T9601] device veth1_vlan entered promiscuous mode [ 192.973974][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 192.989009][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 193.007434][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 193.024669][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 193.054980][ T9601] device veth0_macvtap entered promiscuous mode [ 193.085991][ T9601] device veth1_macvtap entered promiscuous mode [ 193.124964][ T9601] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 193.157474][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 193.188067][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 193.222070][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 193.257008][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 193.296545][ T9601] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 193.331767][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 193.368298][ T2416] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 193.761262][ T39] audit: type=1400 audit(1595784828.128:48): avc: denied { associate } for pid=9601 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 [ 193.957626][ T9601] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation 2020/07/26 17:33:49 executed programs: 4 2020/07/26 17:33:54 executed programs: 43 2020/07/26 17:33:59 executed programs: 77 2020/07/26 17:34:04 executed programs: 112 2020/07/26 17:34:09 executed programs: 150 2020/07/26 17:34:14 executed programs: 184 2020/07/26 17:34:19 executed programs: 220 2020/07/26 17:34:25 executed programs: 258 2020/07/26 17:34:30 executed programs: 295 2020/07/26 17:34:35 executed programs: 335 [ 241.151334][T10963] ------------[ cut here ]------------ [ 241.156736][T10963] WARNING: CPU: 1 PID: 10963 at kernel/locking/lockdep.c:853 register_lock_class+0x1f0/0x1630 [ 241.156736][T10963] Kernel panic - not syncing: panic_on_warn set ... [ 241.156736][T10963] CPU: 1 PID: 10963 Comm: syz-executor.0 Not tainted 5.8.0-rc6-syzkaller #0 [ 241.156736][T10963] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 241.156736][T10963] Call Trace: [ 241.156736][T10963] dump_stack+0x18f/0x20d [ 241.156736][T10963] panic+0x2e3/0x75c [ 241.156736][T10963] ? __warn_printk+0xf3/0xf3 [ 241.156736][T10963] ? printk+0xba/0xed [ 241.156736][T10963] ? log_store.cold+0x16/0x16 [ 241.156736][T10963] ? avc_has_perm_noaudit+0x9c/0x390 [ 241.156736][T10963] ? __warn.cold+0x5/0x45 [ 241.156736][T10963] ? __warn+0xd6/0x1f2 [ 241.156736][T10963] ? register_lock_class+0x1f0/0x1630 [ 241.156736][T10963] __warn.cold+0x20/0x45 [ 241.156736][T10963] ? register_lock_class+0x1f0/0x1630 [ 241.156736][T10963] report_bug+0x1bd/0x210 [ 241.156736][T10963] handle_bug+0x38/0x90 [ 241.156736][T10963] exc_invalid_op+0x13/0x40 [ 241.156736][T10963] asm_exc_invalid_op+0x12/0x20 [ 241.156736][T10963] RIP: 0010:register_lock_class+0x1f0/0x1630 [ 241.156736][T10963] Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 fd 0f 00 00 4d 3b 67 18 74 0b 49 81 3f 40 45 e8 8b 74 02 <0f> 0b 85 ed 0f 84 b2 00 00 00 f6 44 24 04 01 0f 85 a7 00 00 00 83 [ 241.156736][T10963] RSP: 0018:ffffc90000c77a08 EFLAGS: 00010002 [ 241.156736][T10963] RAX: dffffc0000000000 RBX: 1ffff9200018ef48 RCX: ffffffff8c9181a0 [ 241.156736][T10963] RDX: 1ffff110051bb61f RSI: 0000000000000000 RDI: ffff888028ddb0f8 [ 241.156736][T10963] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 241.156736][T10963] R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff88fd75c0 [ 241.156736][T10963] R13: ffffffff8d4b0ac0 R14: ffffffff8c5df658 R15: ffff888028ddb0e0 [ 241.156736][T10963] ? avc_has_perm+0xc4/0x1b0 [ 241.156736][T10963] ? avc_has_perm+0x107/0x1b0 [ 241.156736][T10963] ? is_dynamic_key+0x1a0/0x1a0 [ 241.156736][T10963] ? avc_has_perm_noaudit+0x390/0x390 [ 241.156736][T10963] __lock_acquire+0xfa/0x56e0 [ 241.156736][T10963] ? sock_has_perm+0x1ee/0x280 [ 241.156736][T10963] ? selinux_socket_post_create+0x7c0/0x7c0 [ 241.156736][T10963] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 241.156736][T10963] lock_acquire+0x1f1/0xad0 [ 241.156736][T10963] ? lock_sock_nested+0x3b/0x110 [ 241.156736][T10963] ? lock_release+0x8d0/0x8d0 [ 241.156736][T10963] ? lock_acquire+0x1f1/0xad0 [ 241.156736][T10963] ? __might_fault+0xef/0x1d0 [ 241.156736][T10963] ? find_held_lock+0x2d/0x110 [ 241.156736][T10963] ? __might_fault+0x11f/0x1d0 [ 241.156736][T10963] ? lock_is_held_type+0xb0/0xe0 [ 241.156736][T10963] _raw_spin_lock_bh+0x2f/0x40 [ 241.156736][T10963] ? lock_sock_nested+0x3b/0x110 [ 241.156736][T10963] lock_sock_nested+0x3b/0x110 [ 242.095859][T10963] selinux_netlbl_socket_connect+0x18/0x40 [ 242.095859][T10963] selinux_socket_connect+0x65/0x80 [ 242.095859][T10963] security_socket_connect+0x50/0xb0 [ 242.095859][T10963] __sys_connect_file+0xa2/0x1a0 [ 242.095859][T10963] __sys_connect+0x160/0x190 [ 242.095859][T10963] ? __sys_connect_file+0x1a0/0x1a0 [ 242.095859][T10963] ? __x64_sys_futex+0x382/0x4e0 [ 242.095859][T10963] ? lock_is_held_type+0xb0/0xe0 [ 242.095859][T10963] ? __x64_sys_clock_gettime+0x165/0x240 [ 242.095859][T10963] ? lock_is_held_type+0xb0/0xe0 [ 242.095859][T10963] ? do_syscall_64+0x1c/0xe0 [ 242.095859][T10963] __x64_sys_connect+0x6f/0xb0 [ 242.095859][T10963] ? lockdep_hardirqs_on+0x6a/0xe0 [ 242.095859][T10963] do_syscall_64+0x60/0xe0 [ 242.095859][T10963] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 242.095859][T10963] RIP: 0033:0x45c1f9 [ 242.095859][T10963] Code: 1d b2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 242.095859][T10963] RSP: 002b:00007f284fc44c88 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 242.095859][T10963] RAX: ffffffffffffffda RBX: 00000000006f0e40 RCX: 000000000045c1f9 [ 242.095859][T10963] RDX: 000000000000001c RSI: 0000000020000180 RDI: 0000000000000005 [ 242.095859][T10963] RBP: 00000000004a920e R08: 0000000000000000 R09: 0000000000000000 [ 242.095859][T10963] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000074bfa0 [ 242.095859][T10963] R13: 00007ffcd4016c4f R14: 00007f284fc25000 R15: 0000000000000003 [ 242.095859][T10963] Kernel Offset: disabled [ 242.095859][T10963] Rebooting in 86400 seconds..