[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. 2020/11/25 03:07:33 parsed 1 programs 2020/11/25 03:07:33 executed programs: 0 syzkaller login: [ 67.066111][ T8493] IPVS: ftp: loaded support on port[0] = 21 [ 67.224090][ T8493] chnl_net:caif_netlink_parms(): no params data found [ 67.275684][ T8493] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.283799][ T8493] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.292228][ T8493] device bridge_slave_0 entered promiscuous mode [ 67.301899][ T8493] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.308978][ T8493] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.317210][ T8493] device bridge_slave_1 entered promiscuous mode [ 67.338172][ T8493] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.349588][ T8493] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.372461][ T8493] team0: Port device team_slave_0 added [ 67.379868][ T8493] team0: Port device team_slave_1 added [ 67.396488][ T8493] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.403482][ T8493] 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. [ 67.429818][ T8493] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.443616][ T8493] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.450850][ T8493] 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. [ 67.476865][ T8493] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.504006][ T8493] device hsr_slave_0 entered promiscuous mode [ 67.510729][ T8493] device hsr_slave_1 entered promiscuous mode [ 67.607662][ T8493] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.617999][ T8493] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.628774][ T8493] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.638255][ T8493] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.663385][ T8493] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.670552][ T8493] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.678124][ T8493] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.685255][ T8493] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.732129][ T8493] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.746149][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.757821][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.766708][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.774844][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.788096][ T8493] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.800761][ T2998] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.809269][ T2998] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.816487][ T2998] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.833140][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.842142][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.849192][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.872575][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.881506][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.891710][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.905014][ T8493] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.916683][ T8493] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.925577][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.934416][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.956932][ T8493] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.965764][ T3078] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.974101][ T3078] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.993423][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.013614][ T3078] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.022765][ T3078] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.031126][ T3078] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.043350][ T8493] device veth0_vlan entered promiscuous mode [ 68.055832][ T8493] device veth1_vlan entered promiscuous mode [ 68.076518][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.085307][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.093756][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.105267][ T8493] device veth0_macvtap entered promiscuous mode [ 68.115517][ T8493] device veth1_macvtap entered promiscuous mode [ 68.132981][ T8493] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.141493][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.151458][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.163796][ T8493] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.173334][ T8713] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.186997][ T8493] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.196189][ T8493] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.208130][ T8493] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.217083][ T8493] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.299114][ T77] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.332840][ T77] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.345753][ T21] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.351790][ T8713] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.361056][ T21] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.379353][ T8713] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.426163][ T21] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 68.437259][ T21] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 21, name: kworker/u4:1 [ 68.438803][ T8734] FAULT_INJECTION: forcing a failure. [ 68.438803][ T8734] name fail_usercopy, interval 1, probability 0, space 0, times 1 [ 68.448812][ T21] 4 locks held by kworker/u4:1/21: [ 68.466572][ T21] #0: ffff88801b403938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 68.477624][ T21] #1: ffffc90000dbfda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 68.483295][ T8734] CPU: 1 PID: 8734 Comm: syz-executor.0 Not tainted 5.10.0-rc3-syzkaller #0 [ 68.490632][ T21] #2: [ 68.497580][ T8734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.497587][ T8734] Call Trace: [ 68.497608][ T8734] dump_stack+0x107/0x163 [ 68.497627][ T8734] should_fail.cold+0x5/0xa [ 68.502453][ T21] ffff88801c4e4d00 [ 68.510426][ T8734] _copy_to_user+0x2c/0x150 [ 68.510448][ T8734] simple_read_from_buffer+0xcc/0x160 [ 68.510469][ T8734] proc_fail_nth_read+0x187/0x220 [ 68.510486][ T8734] ? proc_exe_link+0x1d0/0x1d0 [ 68.510505][ T8734] ? security_file_permission+0x248/0x560 [ 68.516275][ T21] ( [ 68.518182][ T8734] ? proc_exe_link+0x1d0/0x1d0 [ 68.518205][ T8734] vfs_read+0x1b5/0x570 [ 68.524179][ T21] &wdev->mtx [ 68.526409][ T8734] ksys_read+0x12d/0x250 [ 68.526424][ T8734] ? vfs_write+0x700/0x700 [ 68.526445][ T8734] ? syscall_enter_from_user_mode+0x1d/0x50 [ 68.526464][ T8734] do_syscall_64+0x2d/0x70 [ 68.526480][ T8734] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.526491][ T8734] RIP: 0033:0x4177b1 [ 68.526506][ T8734] Code: 75 14 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 68.526515][ T8734] RSP: 002b:00007f62beb04c80 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 68.526539][ T8734] RAX: f