[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.192' (ECDSA) to the list of known hosts. syzkaller login: [ 61.310095][ T29] audit: type=1400 audit(1594624590.035:8): avc: denied { execmem } for pid=6800 comm="syz-executor201" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 61.327050][ T6801] IPVS: ftp: loaded support on port[0] = 21 [ 61.408907][ T6801] chnl_net:caif_netlink_parms(): no params data found [ 61.459127][ T6801] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.466593][ T6801] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.475291][ T6801] device bridge_slave_0 entered promiscuous mode [ 61.484367][ T6801] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.492167][ T6801] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.500251][ T6801] device bridge_slave_1 entered promiscuous mode [ 61.519980][ T6801] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.530790][ T6801] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.553001][ T6801] team0: Port device team_slave_0 added [ 61.560286][ T6801] team0: Port device team_slave_1 added [ 61.577122][ T6801] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.584174][ T6801] 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. [ 61.611540][ T6801] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.624264][ T6801] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.631849][ T6801] 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. [ 61.658814][ T6801] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.741065][ T6801] device hsr_slave_0 entered promiscuous mode [ 61.788005][ T6801] device hsr_slave_1 entered promiscuous mode [ 61.920780][ T6801] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.980316][ T6801] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.050445][ T6801] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.109880][ T6801] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.163047][ T6801] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.170222][ T6801] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.178067][ T6801] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.185129][ T6801] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.226206][ T6801] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.242290][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.253213][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.262077][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.271556][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 62.284379][ T6801] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.295441][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.304840][ T3801] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.311944][ T3801] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.325234][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.334526][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.341631][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.360599][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.369953][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.382785][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.398176][ T6801] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.409367][ T6801] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.424143][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.432654][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.441739][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.450499][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.459361][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.477553][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.484941][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.502321][ T6801] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.520093][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.529159][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.547402][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.555677][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.567901][ T6801] device veth0_vlan entered promiscuous mode [ 62.575573][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.585245][ T3801] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.596927][ T6801] device veth1_vlan entered promiscuous mode [ 62.618287][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 62.626257][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 62.635663][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 62.644874][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 62.656088][ T6801] device veth0_macvtap entered promiscuous mode [ 62.666960][ T6801] device veth1_macvtap entered promiscuous mode [ 62.684526][ T6801] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.693507][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.702053][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 62.710300][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 62.719016][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 62.731673][ T6801] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.739169][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 62.748419][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 62.904123][ T6801] tipc: Started in network mode [ 62.909879][ T6801] tipc: Own node identity aaaaaaaaaa3a, cluster identity 4711 [ 62.919074][ T6801] tipc: Enabled bearer , priority 0 [ 62.951803][ T6801] tipc: TX(aaaaaaaaaa3a): key initiating, rc 1! [ 62.959135][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor201/6801 [ 62.968995][ T6801] caller is tipc_crypto_xmit+0x80a/0x2790 [ 62.974729][ T6801] CPU: 0 PID: 6801 Comm: syz-executor201 Not tainted 5.8.0-rc4-syzkaller #0 [ 62.983389][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.993435][ T6801] Call Trace: [ 62.996719][ T6801] dump_stack+0x18f/0x20d [ 63.001060][ T6801] check_preemption_disabled+0x128/0x130 [ 63.006700][ T6801] tipc_crypto_xmit+0x80a/0x2790 [ 63.011639][ T6801] ? tipc_crypto_timeout+0x10f0/0x10f0 [ 63.017231][ T6801] ? bearer_get+0x168/0x340 [ 63.021733][ T6801] ? lock_downgrade+0x820/0x820 [ 63.026580][ T6801] ? lockdep_hardirqs_on+0x6a/0xe0 [ 63.031685][ T6801] ? memcpy+0x39/0x60 [ 63.035661][ T6801] ? lock_is_held_type+0xb0/0xe0 [ 63.040619][ T6801] tipc_bearer_xmit_skb+0x180/0x3f0 [ 63.045812][ T6801] ? tipc_bearer_mtu+0x4d0/0x4d0 [ 63.050741][ T6801] ? tipc_disc_create+0x705/0xa90 [ 63.055760][ T6801] tipc_enable_bearer+0xb1d/0xdc0 [ 63.060781][ T6801] ? tipc_bearer_xmit_skb+0x3f0/0x3f0 [ 63.066145][ T6801] ? __sys_sendmsg+0xe5/0x1b0 [ 63.070899][ T6801] ? do_syscall_64+0x60/0xe0 [ 63.075479][ T6801] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.081537][ T6801] ? cache_alloc_refill+0x2fd/0x340 [ 63.086731][ T6801] ? __nla_parse+0x3d/0x4a [ 63.091147][ T6801] __tipc_nl_bearer_enable+0x2bf/0x390 [ 63.096605][ T6801] ? tipc_nl_bearer_disable+0x30/0x30 [ 63.101976][ T6801] ? tipc_nl_compat_bearer_enable+0x33c/0x5a0 [ 63.108042][ T6801] ? __nla_parse+0x3d/0x4a [ 63.112455][ T6801] tipc_nl_compat_doit+0x440/0x640 [ 63.117561][ T6801] ? tipc_nl_compat_dumpit+0x570/0x570 [ 63.123011][ T6801] ? cap_capable+0x1eb/0x250 [ 63.127606][ T6801] ? ns_capable+0xde/0x100 [ 63.132024][ T6801] tipc_nl_compat_recv+0x4ef/0xb40 [ 63.137131][ T6801] ? tipc_nl_compat_link_set+0xad0/0xad0 [ 63.142767][ T6801] ? tipc_nl_bearer_disable+0x30/0x30 [ 63.148135][ T6801] ? tipc_nl_compat_bearer_disable+0x2c0/0x2c0 [ 63.154280][ T6801] ? mutex_lock_io_nested+0xf60/0xf60 [ 63.159646][ T6801] ? lock_is_held_type+0xb0/0xe0 [ 63.164580][ T6801] ? __radix_tree_lookup+0x1f3/0x290 [ 63.169861][ T6801] ? genl_family_rcv_msg_attrs_parse.isra.0+0x8d/0x250 [ 63.176740][ T6801] genl_rcv_msg+0x61d/0x980 [ 63.181243][ T6801] ? genl_family_rcv_msg_attrs_parse.isra.0+0x250/0x250 [ 63.188199][ T6801] ? lock_release+0x8d0/0x8d0 [ 63.192873][ T6801] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 63.198153][ T6801] netlink_rcv_skb+0x15a/0x430 [ 63.202914][ T6801] ? genl_family_rcv_msg_attrs_parse.isra.0+0x250/0x250 [ 63.209842][ T6801] ? netlink_ack+0xa10/0xa10 [ 63.214433][ T6801] genl_rcv+0x24/0x40 [ 63.218416][ T6801] netlink_unicast+0x533/0x7d0 [ 63.223174][ T6801] ? netlink_attachskb+0x810/0x810 [ 63.228279][ T6801] ? _copy_from_iter_full+0x247/0x890 [ 63.233665][ T6801] netlink_sendmsg+0x856/0xd90 [ 63.238440][ T6801] ? netlink_unicast+0x7d0/0x7d0 [ 63.243382][ T6801] ? netlink_unicast+0x7d0/0x7d0 [ 63.248408][ T6801] sock_sendmsg+0xcf/0x120 [ 63.252826][ T6801] ____sys_sendmsg+0x6e8/0x810 [ 63.257602][ T6801] ? kernel_sendmsg+0x50/0x50 [ 63.262274][ T6801] ? do_recvmmsg+0x6d0/0x6d0 [ 63.266854][ T6801] ? find_held_lock+0x2d/0x110 [ 63.271622][ T6801] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 63.277596][ T6801] ? lock_downgrade+0x820/0x820 [ 63.282446][ T6801] ___sys_sendmsg+0xf3/0x170 [ 63.287032][ T6801] ? sendmsg_copy_msghdr+0x160/0x160 [ 63.292317][ T6801] ? debug_object_active_state+0x260/0x350 [ 63.298118][ T6801] ? lock_downgrade+0x820/0x820 [ 63.302967][ T6801] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.308767][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.314739][ T6801] ? trace_hardirqs_on+0x5f/0x220 [ 63.319755][ T6801] ? lockdep_hardirqs_on+0x6a/0xe0 [ 63.324860][ T6801] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 63.330660][ T6801] ? debug_object_active_state+0x260/0x350 [ 63.336456][ T6801] ? check_preemption_disabled+0x50/0x130 [ 63.342255][ T6801] ? __fget_light+0x215/0x280 [ 63.346928][ T6801] __sys_sendmsg+0xe5/0x1b0 [ 63.351437][ T6801] ? __sys_sendmsg_sock+0xb0/0xb0 [ 63.356454][ T6801] ? lock_is_held_type+0xb0/0xe0 [ 63.361391][ T6801] ? do_syscall_64+0x1c/0xe0 [ 63.365992][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.371979][ T6801] do_syscall_64+0x60/0xe0 [ 63.376400][ T6801] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.382286][ T6801] RIP: 0033:0x4476a9 [ 63.386166][ T6801] Code: Bad RIP value. [ 63.390222][ T6801] RSP: 002b:00007fff2b6d5168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.398633][ T6801] RAX: ffffffffffffffda RBX: 000000000000