[ 32.624938] audit: type=1800 audit(1581333779.833:33): pid=7096 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=2465 res=0 [ 32.651772] audit: type=1800 audit(1581333779.833:34): pid=7096 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=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.755636] random: sshd: uninitialized urandom read (32 bytes read) [ 36.118630] audit: type=1400 audit(1581333783.323:35): avc: denied { map } for pid=7268 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 [ 36.171384] random: sshd: uninitialized urandom read (32 bytes read) [ 36.868825] random: sshd: uninitialized urandom read (32 bytes read) [ 37.062768] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. [ 42.604562] random: sshd: uninitialized urandom read (32 bytes read) [ 42.721645] audit: type=1400 audit(1581333789.933:36): avc: denied { map } for pid=7280 comm="syz-executor519" path="/root/syz-executor519858328" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 43.030956] IPVS: ftp: loaded support on port[0] = 21 [ 43.851940] chnl_net:caif_netlink_parms(): no params data found [ 43.892341] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.898873] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.906054] device bridge_slave_0 entered promiscuous mode [ 43.912977] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.919404] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.926480] device bridge_slave_1 entered promiscuous mode [ 43.940443] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 43.949099] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 43.965016] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.972253] team0: Port device team_slave_0 added [ 43.977771] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.985032] team0: Port device team_slave_1 added [ 43.997787] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.004086] 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. [ 44.029372] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.040414] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.046656] 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. [ 44.071890] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 44.082267] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 44.089597] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 44.142131] device hsr_slave_0 entered promiscuous mode [ 44.210323] device hsr_slave_1 entered promiscuous mode [ 44.281078] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 44.288373] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 44.339491] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.345966] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.353101] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.359442] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.390719] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 44.396811] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.405064] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 44.413416] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.432482] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.439500] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.449189] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 44.455494] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.463689] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.472005] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.478336] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.487203] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.495540] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.501919] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.521411] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.529036] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.537147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.544572] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.552890] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.560852] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.567083] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.580428] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 44.587663] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 44.594901] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 44.605283] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.660892] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 44.670436] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 44.701675] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 44.708540] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 44.715670] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 44.725176] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 44.732715] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 44.739529] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 44.748092] device veth0_vlan entered promiscuous mode [ 44.756933] device veth1_vlan entered promiscuous mode [ 44.762866] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 44.771827] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 44.783119] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 44.792470] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 44.799552] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 44.806881] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 44.815946] device veth0_macvtap entered promiscuous mode [ 44.822175] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 44.830170] device veth1_macvtap entered promiscuous mode [ 44.838191] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 44.847467] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 44.857255] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 44.866021] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 44.873269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 44.882255] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 44.892921] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 44.899770] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 44.907229] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 44.915161] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 44.982938] FAULT_INJECTION: forcing a failure. [ 44.982938] name failslab, interval 1, probability 0, space 0, times 1 [ 44.995046] CPU: 1 PID: 7321 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 45.002922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.012268] Call Trace: [ 45.014859] dump_stack+0x142/0x197 [ 45.018486] should_fail.cold+0x10f/0x159 [ 45.022621] should_failslab+0xdb/0x130 [ 45.026589] kmem_cache_alloc+0x47/0x780 [ 45.030643] ? debug_object_activate+0x22c/0x450 [ 45.035418] ? find_held_lock+0x35/0x130 [ 45.039470] __debug_object_init+0x5b8/0x8e0 [ 45.043886] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 45.048986] ? debug_object_destroy+0x250/0x250 [ 45.053679] ? trace_hardirqs_on_caller+0x400/0x590 [ 45.058694] debug_object_activate+0x274/0x450 [ 45.063267] ? debug_object_free+0x3f0/0x3f0 [ 45.067671] ? save_trace+0x290/0x290 [ 45.071467] ? save_trace+0x290/0x290 [ 45.075261] ? selinux_file_free_security+0x60/0x60 [ 45.080271] __call_rcu.constprop.0+0x35/0x820 [ 45.084861] ? evict+0x3de/0x630 [ 45.088222] ? find_held_lock+0x35/0x130 [ 45.092289] call_rcu+0x12/0x20 [ 45.095588] selinux_inode_free_security+0x1c1/0x2a0 [ 45.100685] security_inode_free+0x50/0x90 [ 45.104902] __destroy_inode+0x1ef/0x4e0 [ 45.108958] destroy_inode+0x50/0x120 [ 45.112756] evict+0x3e6/0x630 [ 45.115953] ? do_raw_spin_unlock+0x174/0x260 [ 45.120443] iput+0x471/0x900 [ 45.123595] dentry_unlink_inode+0x286/0x340 [ 45.128025] __dentry_kill+0x32e/0x580 [ 45.131899] ? dput.part.0+0x2a/0x750 [ 45.135728] ? dput.part.0+0x2a/0x750 [ 45.139542] dput.part.0+0x59f/0x750 [ 45.143251] ? __sock_release+0x2b0/0x2b0 [ 45.147382] dput+0x20/0x30 [ 45.150322] __fput+0x45f/0x7a0 [ 45.153596] ____fput+0x16/0x20 [ 45.156919] task_work_run+0x114/0x190 [ 45.160799] exit_to_usermode_loop+0x1da/0x220 [ 45.165375] do_syscall_64+0x4bc/0x640 [ 45.169298] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.174146] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.179366] RIP: 0033:0x403260 executing program [ 45.182536] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 45.190241] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000403260 [ 45.197509] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 45.204767] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 45.212076] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 45.219337] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 45.233355] FAULT_INJECTION: forcing a failure. [ 45.233355] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 45.245864] CPU: 0 PID: 7322 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 45.253743] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.263092] Call Trace: [ 45.265714] dump_stack+0x142/0x197 [ 45.269338] should_fail.cold+0x10f/0x159 [ 45.273475] ? save_trace+0x290/0x290 [ 45.277260] __alloc_pages_nodemask+0x1d6/0x7a0 [ 45.281912] ? find_held_lock+0x35/0x130 [ 45.286020] ? __alloc_pages_slowpath+0x2930/0x2930 [ 45.291043] ? lock_downgrade+0x740/0x740 [ 45.295184] alloc_pages_current+0xec/0x1e0 [ 45.299501] __get_free_pages+0xf/0x40 [ 45.303384] __tlb_remove_page_size+0x2c5/0x4f0 [ 45.308095] unmap_page_range+0xb59/0x19f0 [ 45.312319] ? vm_normal_page_pmd+0x360/0x360 [ 45.316807] ? uprobe_munmap+0x94/0x210 [ 45.320766] unmap_single_vma+0x15d/0x2c0 [ 45.324897] unmap_vmas+0xac/0x170 [ 45.328429] exit_mmap+0x285/0x4e0 [ 45.331952] ? SyS_munmap+0x30/0x30 [ 45.335579] ? kmem_cache_free+0x244/0x2b0 [ 45.339843] ? __khugepaged_exit+0xcf/0x3d0 [ 45.344212] ? mm_update_next_owner+0x450/0x5d0 [ 45.348876] mmput+0x114/0x440 [ 45.352056] do_exit+0x952/0x2cd0 [ 45.355502] ? mm_update_next_owner+0x5d0/0x5d0 [ 45.360162] ? up_read+0x1a/0x40 [ 45.363517] ? __do_page_fault+0x358/0xb80 [ 45.367766] do_group_exit+0x111/0x330 [ 45.371643] SyS_exit_group+0x1d/0x20 [ 45.375450] ? do_group_exit+0x330/0x330 [ 45.379496] do_syscall_64+0x1e8/0x640 [ 45.383393] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.388263] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.393467] RIP: 0033:0x4422f8 [ 45.396640] RSP: 002b:00007ffe5fa14c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 45.404338] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004422f8 [ 45.411600] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 45.418860] RBP: 00000000004c8630 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 45.426686] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 executing program [ 45.433970] R13: 00000000006dba60 R14: 0000000000000000 R15: 0000000000000000 [ 45.447343] FAULT_INJECTION: forcing a failure. [ 45.447343] name failslab, interval 1, probability 0, space 0, times 0 [ 45.460317] CPU: 0 PID: 7323 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 45.468206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.477553] Call Trace: [ 45.480144] dump_stack+0x142/0x197 [ 45.483779] should_fail.cold+0x10f/0x159 [ 45.487915] should_failslab+0xdb/0x130 [ 45.491880] kmem_cache_alloc_node+0x287/0x780 [ 45.496502] __alloc_skb+0x9c/0x500 [ 45.500114] ? skb_trim+0x180/0x180 [ 45.503747] ? if_nlmsg_size+0x38f/0x810 [ 45.507809] rtmsg_ifinfo_build_skb+0x72/0x140 [ 45.512378] rtmsg_ifinfo_event.part.0+0x35/0xc0 [ 45.517141] rtnetlink_event+0xf4/0x120 [ 45.521285] notifier_call_chain+0x111/0x1b0 [ 45.525685] raw_notifier_call_chain+0x2e/0x40 [ 45.530362] call_netdevice_notifiers_info+0x56/0x70 [ 45.535567] __netdev_upper_dev_link+0x1da/0x230 [ 45.540327] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 45.545076] ? lock_downgrade+0x740/0x740 [ 45.549249] netdev_master_upper_dev_link+0x32/0x40 [ 45.554264] batadv_hardif_enable_interface+0x1ef/0xa10 [ 45.559673] batadv_softif_slave_add+0x8b/0xf0 [ 45.564238] ? batadv_softif_slave_del+0xc0/0xc0 [ 45.569001] do_set_master+0x19f/0x200 [ 45.572900] do_setlink+0x99f/0x2c20 [ 45.576619] ? rtnl_register+0x50/0x50 [ 45.580507] ? save_trace+0x290/0x290 [ 45.584295] ? is_bpf_text_address+0x7f/0x120 [ 45.588786] ? find_held_lock+0x35/0x130 [ 45.592843] ? is_bpf_text_address+0x7f/0x120 [ 45.597325] ? __lock_acquire+0x5f7/0x4620 [ 45.601552] ? __lock_acquire+0x5f7/0x4620 [ 45.605773] ? is_bpf_text_address+0xa6/0x120 [ 45.610309] ? trace_hardirqs_on+0x10/0x10 [ 45.614537] ? validate_nla+0x201/0x5f0 [ 45.618502] ? nla_parse+0x186/0x240 [ 45.622219] rtnl_newlink+0x11a7/0x1700 [ 45.626280] ? rtnl_link_unregister+0x200/0x200 [ 45.630931] ? avc_has_perm_noaudit+0x2b2/0x420 [ 45.635593] ? lock_acquire+0x16f/0x430 [ 45.639567] ? rtnetlink_rcv_msg+0x339/0xb70 [ 45.643992] ? rtnl_link_unregister+0x200/0x200 [ 45.648962] rtnetlink_rcv_msg+0x3da/0xb70 [ 45.653201] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 45.657784] ? netlink_deliver_tap+0x93/0x8f0 [ 45.662268] netlink_rcv_skb+0x14f/0x3c0 [ 45.666340] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 45.670914] ? lock_downgrade+0x740/0x740 [ 45.675056] ? netlink_ack+0x9a0/0x9a0 [ 45.678943] ? netlink_deliver_tap+0xba/0x8f0 [ 45.683435] rtnetlink_rcv+0x1d/0x30 [ 45.687131] netlink_unicast+0x44d/0x650 [ 45.691252] ? netlink_attachskb+0x6a0/0x6a0 [ 45.695650] ? security_netlink_send+0x81/0xb0 [ 45.700228] netlink_sendmsg+0x7c4/0xc60 [ 45.704322] ? netlink_unicast+0x650/0x650 [ 45.708558] ? security_socket_sendmsg+0x89/0xb0 [ 45.713353] ? netlink_unicast+0x650/0x650 [ 45.717585] sock_sendmsg+0xce/0x110 [ 45.721284] ___sys_sendmsg+0x70a/0x840 [ 45.725257] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 45.730005] ? lock_downgrade+0x740/0x740 [ 45.734159] ? get_pid_task+0xbf/0x140 [ 45.738035] ? proc_cwd_link+0x1b0/0x1b0 [ 45.742096] ? save_trace+0x290/0x290 [ 45.745887] ? vfs_write+0x25f/0x500 [ 45.749588] ? find_held_lock+0x35/0x130 [ 45.753645] ? vfs_write+0x25f/0x500 [ 45.757362] ? __fget_light+0x172/0x1f0 [ 45.761326] ? __fdget+0x1b/0x20 [ 45.764691] ? sockfd_lookup_light+0xb4/0x160 [ 45.769168] __sys_sendmsg+0xb9/0x140 [ 45.772952] ? SyS_shutdown+0x170/0x170 [ 45.776931] SyS_sendmsg+0x2d/0x50 [ 45.780457] ? __sys_sendmsg+0x140/0x140 [ 45.784521] do_syscall_64+0x1e8/0x640 [ 45.788404] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.793249] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.798461] RIP: 0033:0x4436e9 [ 45.801641] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 45.809348] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 45.816650] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 45.823915] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac executing program [ 45.831179] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 45.838436] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 45.847972] batman_adv: batadv0: Adding interface: gretap0 [ 45.853646] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 45.878963] batman_adv: batadv0: Interface activated: gretap0 [ 45.893069] FAULT_INJECTION: forcing a failure. [ 45.893069] name failslab, interval 1, probability 0, space 0, times 0 [ 45.904320] CPU: 0 PID: 7324 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 45.912284] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.921636] Call Trace: [ 45.924256] dump_stack+0x142/0x197 [ 45.927914] should_fail.cold+0x10f/0x159 [ 45.932093] should_failslab+0xdb/0x130 [ 45.936145] kmem_cache_alloc+0x2d7/0x780 [ 45.940375] ? memcpy+0x46/0x50 [ 45.943638] ? kstrdup+0x5a/0x70 [ 45.946991] __kernfs_new_node+0x70/0x480 [ 45.951266] kernfs_new_node+0x80/0xf0 [ 45.955145] kernfs_create_link+0x2c/0x170 [ 45.959364] sysfs_do_create_link_sd.isra.0+0x90/0x120 [ 45.964622] sysfs_create_link+0x65/0xc0 [ 45.968677] netdev_adjacent_sysfs_add+0xa7/0xd0 [ 45.973429] ? napi_disable+0x90/0x90 [ 45.977230] __netdev_adjacent_dev_insert+0x487/0x6a0 [ 45.982411] __netdev_upper_dev_link+0x1be/0x230 [ 45.987216] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 45.991988] ? lock_downgrade+0x740/0x740 [ 45.996128] netdev_master_upper_dev_link+0x32/0x40 [ 46.001142] batadv_hardif_enable_interface+0x1ef/0xa10 [ 46.006493] batadv_softif_slave_add+0x8b/0xf0 [ 46.011079] ? batadv_softif_slave_del+0xc0/0xc0 [ 46.015835] do_set_master+0x19f/0x200 [ 46.019718] do_setlink+0x99f/0x2c20 [ 46.023428] ? rtnl_register+0x50/0x50 [ 46.027302] ? save_trace+0x290/0x290 [ 46.031107] ? is_bpf_text_address+0x7f/0x120 [ 46.035607] ? find_held_lock+0x35/0x130 [ 46.039657] ? is_bpf_text_address+0x7f/0x120 [ 46.044150] ? __lock_acquire+0x5f7/0x4620 [ 46.048464] ? __lock_acquire+0x5f7/0x4620 [ 46.052788] ? is_bpf_text_address+0xa6/0x120 [ 46.057274] ? trace_hardirqs_on+0x10/0x10 [ 46.061520] ? validate_nla+0x201/0x5f0 [ 46.065484] ? nla_parse+0x186/0x240 [ 46.069241] rtnl_newlink+0x11a7/0x1700 [ 46.073232] ? rtnl_link_unregister+0x200/0x200 [ 46.077901] ? avc_has_perm_noaudit+0x2b2/0x420 [ 46.082573] ? lock_acquire+0x16f/0x430 [ 46.086541] ? rtnetlink_rcv_msg+0x339/0xb70 [ 46.090954] ? rtnl_link_unregister+0x200/0x200 [ 46.096780] rtnetlink_rcv_msg+0x3da/0xb70 [ 46.101062] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 46.105632] ? netlink_deliver_tap+0x93/0x8f0 [ 46.110130] netlink_rcv_skb+0x14f/0x3c0 [ 46.114178] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 46.118773] ? lock_downgrade+0x740/0x740 [ 46.122915] ? netlink_ack+0x9a0/0x9a0 [ 46.126803] ? netlink_deliver_tap+0xba/0x8f0 [ 46.131289] rtnetlink_rcv+0x1d/0x30 [ 46.134988] netlink_unicast+0x44d/0x650 [ 46.139052] ? netlink_attachskb+0x6a0/0x6a0 [ 46.143451] ? security_netlink_send+0x81/0xb0 [ 46.149150] netlink_sendmsg+0x7c4/0xc60 [ 46.153207] ? netlink_unicast+0x650/0x650 [ 46.157551] ? security_socket_sendmsg+0x89/0xb0 [ 46.162463] ? netlink_unicast+0x650/0x650 [ 46.166692] sock_sendmsg+0xce/0x110 [ 46.170393] ___sys_sendmsg+0x70a/0x840 [ 46.174433] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 46.179183] ? lock_downgrade+0x740/0x740 [ 46.183334] ? get_pid_task+0xbf/0x140 [ 46.187206] ? proc_cwd_link+0x1b0/0x1b0 [ 46.191301] ? save_trace+0x290/0x290 [ 46.195092] ? vfs_write+0x25f/0x500 [ 46.198789] ? find_held_lock+0x35/0x130 [ 46.202830] ? vfs_write+0x25f/0x500 [ 46.206683] ? __fget_light+0x172/0x1f0 [ 46.210647] ? __fdget+0x1b/0x20 [ 46.213996] ? sockfd_lookup_light+0xb4/0x160 [ 46.218483] __sys_sendmsg+0xb9/0x140 [ 46.222269] ? SyS_shutdown+0x170/0x170 [ 46.226232] SyS_sendmsg+0x2d/0x50 [ 46.229760] ? __sys_sendmsg+0x140/0x140 [ 46.234269] do_syscall_64+0x1e8/0x640 [ 46.238144] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.243081] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.248321] RIP: 0033:0x4436e9 [ 46.251499] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 46.259369] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 46.267527] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 46.275076] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 46.282437] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff executing program [ 46.289715] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 46.310892] FAULT_INJECTION: forcing a failure. [ 46.310892] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 46.323097] CPU: 0 PID: 7325 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 46.331056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.341038] Call Trace: [ 46.343621] dump_stack+0x142/0x197 [ 46.347239] should_fail.cold+0x10f/0x159 [ 46.351480] __alloc_pages_nodemask+0x1d6/0x7a0 [ 46.356155] ? __alloc_pages_slowpath+0x2930/0x2930 [ 46.361251] ? check_preemption_disabled+0x3c/0x250 [ 46.366768] ? check_preemption_disabled+0x3c/0x250 [ 46.371835] alloc_pages_current+0xec/0x1e0 [ 46.376378] __get_free_pages+0xf/0x40 [ 46.380471] tlb_remove_table+0x115/0x1e0 [ 46.384831] ___pte_free_tlb+0x9e/0xd0 [ 46.388722] free_pgd_range+0x979/0xd10 [ 46.392692] free_pgtables+0x1fa/0x2b0 [ 46.396576] exit_mmap+0x294/0x4e0 [ 46.400228] ? SyS_munmap+0x30/0x30 [ 46.403886] ? kmem_cache_free+0x244/0x2b0 [ 46.408403] ? __khugepaged_exit+0xcf/0x3d0 [ 46.412923] ? mm_update_next_owner+0x450/0x5d0 [ 46.417587] mmput+0x114/0x440 [ 46.420783] do_exit+0x952/0x2cd0 [ 46.424410] ? mm_update_next_owner+0x5d0/0x5d0 [ 46.429112] ? up_read+0x1a/0x40 [ 46.432498] ? __do_page_fault+0x358/0xb80 [ 46.436939] do_group_exit+0x111/0x330 [ 46.440826] SyS_exit_group+0x1d/0x20 [ 46.445021] ? do_group_exit+0x330/0x330 [ 46.449074] do_syscall_64+0x1e8/0x640 [ 46.452951] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.457783] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.462963] RIP: 0033:0x4422f8 [ 46.466194] RSP: 002b:00007ffe5fa14c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 46.473906] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004422f8 [ 46.481211] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 46.488468] RBP: 00000000004c8630 R08: 00000000000000e7 R09: ffffffffffffffd0 executing program executing program executing program [ 46.495841] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 46.503693] R13: 00000000006dba60 R14: 0000000000000000 R15: 0000000000000000 [ 46.527651] FAULT_INJECTION: forcing a failure. [ 46.527651] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 46.539845] CPU: 0 PID: 7328 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 46.547844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.557344] Call Trace: [ 46.559929] dump_stack+0x142/0x197 [ 46.563561] should_fail.cold+0x10f/0x159 [ 46.567706] __alloc_pages_nodemask+0x1d6/0x7a0 [ 46.572500] ? __alloc_pages_slowpath+0x2930/0x2930 [ 46.577573] ? check_preemption_disabled+0x3c/0x250 [ 46.582597] ? check_preemption_disabled+0x3c/0x250 [ 46.587612] alloc_pages_current+0xec/0x1e0 [ 46.591946] __get_free_pages+0xf/0x40 [ 46.595828] tlb_remove_table+0x115/0x1e0 [ 46.599967] ___pte_free_tlb+0x9e/0xd0 [ 46.603847] free_pgd_range+0x979/0xd10 [ 46.607897] free_pgtables+0x1fa/0x2b0 [ 46.611778] exit_mmap+0x294/0x4e0 [ 46.615390] ? SyS_munmap+0x30/0x30 [ 46.619022] ? kmem_cache_free+0x244/0x2b0 [ 46.623252] ? __khugepaged_exit+0xcf/0x3d0 [ 46.627578] ? mm_update_next_owner+0x450/0x5d0 [ 46.632289] mmput+0x114/0x440 [ 46.635525] do_exit+0x952/0x2cd0 [ 46.639009] ? mm_update_next_owner+0x5d0/0x5d0 [ 46.643859] ? up_read+0x1a/0x40 [ 46.647215] ? __do_page_fault+0x358/0xb80 [ 46.651450] do_group_exit+0x111/0x330 [ 46.655336] SyS_exit_group+0x1d/0x20 [ 46.659247] ? do_group_exit+0x330/0x330 [ 46.663303] do_syscall_64+0x1e8/0x640 [ 46.667180] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.672237] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.677486] RIP: 0033:0x4422f8 [ 46.680676] RSP: 002b:00007ffe5fa14c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 46.688380] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004422f8 executing program executing program [ 46.695650] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 46.702926] RBP: 00000000004c8630 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 46.710195] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 46.717510] R13: 00000000006dba60 R14: 0000000000000000 R15: 0000000000000000 [ 46.735026] FAULT_INJECTION: forcing a failure. [ 46.735026] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 46.746901] CPU: 0 PID: 7330 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 46.754999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.764352] Call Trace: [ 46.767611] dump_stack+0x142/0x197 [ 46.771422] should_fail.cold+0x10f/0x159 [ 46.775717] __alloc_pages_nodemask+0x1d6/0x7a0 [ 46.780503] ? __alloc_pages_slowpath+0x2930/0x2930 [ 46.785566] cache_grow_begin+0x80/0x400 [ 46.789629] kmem_cache_alloc+0x6a6/0x780 [ 46.794230] ? memcpy+0x46/0x50 [ 46.797522] __kernfs_new_node+0x70/0x480 [ 46.801674] kernfs_new_node+0x80/0xf0 [ 46.805672] kernfs_create_link+0x2c/0x170 [ 46.810020] sysfs_do_create_link_sd.isra.0+0x90/0x120 [ 46.815410] sysfs_create_link+0x65/0xc0 [ 46.819477] netdev_adjacent_sysfs_add+0xa7/0xd0 [ 46.824223] ? napi_disable+0x90/0x90 [ 46.828313] __netdev_adjacent_dev_insert+0x487/0x6a0 [ 46.833508] __netdev_upper_dev_link+0x1be/0x230 [ 46.838487] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 46.843316] ? lock_downgrade+0x740/0x740 [ 46.847641] netdev_master_upper_dev_link+0x32/0x40 [ 46.852796] batadv_hardif_enable_interface+0x1ef/0xa10 [ 46.858160] batadv_softif_slave_add+0x8b/0xf0 [ 46.862866] ? batadv_softif_slave_del+0xc0/0xc0 [ 46.867842] do_set_master+0x19f/0x200 [ 46.871868] do_setlink+0x99f/0x2c20 [ 46.875782] ? rtnl_register+0x50/0x50 [ 46.880136] ? save_trace+0x290/0x290 [ 46.884041] ? is_bpf_text_address+0x7f/0x120 [ 46.888648] ? find_held_lock+0x35/0x130 [ 46.892806] ? is_bpf_text_address+0x7f/0x120 [ 46.897310] ? __lock_acquire+0x5f7/0x4620 [ 46.901657] ? __lock_acquire+0x5f7/0x4620 [ 46.906157] ? is_bpf_text_address+0xa6/0x120 [ 46.910657] ? trace_hardirqs_on+0x10/0x10 [ 46.914887] ? validate_nla+0x201/0x5f0 [ 46.919024] ? nla_parse+0x186/0x240 [ 46.922741] rtnl_newlink+0x11a7/0x1700 [ 46.926719] ? rtnl_link_unregister+0x200/0x200 [ 46.931393] ? avc_has_perm_noaudit+0x2b2/0x420 [ 46.936359] ? lock_acquire+0x16f/0x430 [ 46.940527] ? rtnetlink_rcv_msg+0x339/0xb70 [ 46.945004] ? rtnl_link_unregister+0x200/0x200 [ 46.949674] rtnetlink_rcv_msg+0x3da/0xb70 [ 46.953913] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 46.958497] ? netlink_deliver_tap+0x93/0x8f0 [ 46.962994] netlink_rcv_skb+0x14f/0x3c0 [ 46.967272] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 46.971860] ? lock_downgrade+0x740/0x740 [ 46.976004] ? netlink_ack+0x9a0/0x9a0 [ 46.980165] ? netlink_deliver_tap+0xba/0x8f0 [ 46.984873] rtnetlink_rcv+0x1d/0x30 [ 46.988805] netlink_unicast+0x44d/0x650 [ 46.992973] ? netlink_attachskb+0x6a0/0x6a0 [ 46.997590] ? security_netlink_send+0x81/0xb0 [ 47.002297] netlink_sendmsg+0x7c4/0xc60 [ 47.006598] ? netlink_unicast+0x650/0x650 [ 47.010894] ? security_socket_sendmsg+0x89/0xb0 [ 47.015728] ? netlink_unicast+0x650/0x650 [ 47.019957] sock_sendmsg+0xce/0x110 [ 47.023785] ___sys_sendmsg+0x70a/0x840 [ 47.027848] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 47.032599] ? lock_downgrade+0x740/0x740 [ 47.036888] ? get_pid_task+0xbf/0x140 [ 47.040921] ? proc_cwd_link+0x1b0/0x1b0 [ 47.045149] ? save_trace+0x290/0x290 [ 47.049113] ? vfs_write+0x25f/0x500 [ 47.053032] ? find_held_lock+0x35/0x130 [ 47.057091] ? vfs_write+0x25f/0x500 [ 47.060922] ? __fget_light+0x172/0x1f0 [ 47.065070] ? __fdget+0x1b/0x20 [ 47.068558] ? sockfd_lookup_light+0xb4/0x160 [ 47.073142] __sys_sendmsg+0xb9/0x140 [ 47.077077] ? SyS_shutdown+0x170/0x170 [ 47.081329] SyS_sendmsg+0x2d/0x50 [ 47.084863] ? __sys_sendmsg+0x140/0x140 [ 47.089084] do_syscall_64+0x1e8/0x640 [ 47.093298] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.098203] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 47.103394] RIP: 0033:0x4436e9 [ 47.106705] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 47.114774] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 47.122313] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 47.129731] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 47.137290] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff executing program [ 47.144568] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 47.155936] batman_adv: batadv0: Adding interface: syz_tun [ 47.161795] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 47.187852] batman_adv: batadv0: Interface activated: syz_tun [ 47.201606] FAULT_INJECTION: forcing a failure. [ 47.201606] name failslab, interval 1, probability 0, space 0, times 0 [ 47.212865] CPU: 0 PID: 7331 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 47.221134] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.230744] Call Trace: [ 47.233543] dump_stack+0x142/0x197 [ 47.237545] should_fail.cold+0x10f/0x159 [ 47.241965] should_failslab+0xdb/0x130 [ 47.245952] kmem_cache_alloc_node_trace+0x280/0x770 [ 47.251055] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 47.256651] __kmalloc_node_track_caller+0x3d/0x80 [ 47.261744] __kmalloc_reserve.isra.0+0x40/0xe0 [ 47.266889] __alloc_skb+0xcf/0x500 [ 47.270602] ? skb_trim+0x180/0x180 [ 47.274369] ? if_nlmsg_size+0x38f/0x810 [ 47.278567] rtmsg_ifinfo_build_skb+0x72/0x140 [ 47.283279] rtmsg_ifinfo_event.part.0+0x35/0xc0 [ 47.288172] rtnetlink_event+0xf4/0x120 [ 47.292205] notifier_call_chain+0x111/0x1b0 [ 47.296886] raw_notifier_call_chain+0x2e/0x40 [ 47.301582] call_netdevice_notifiers_info+0x56/0x70 [ 47.306832] __netdev_upper_dev_link+0x1da/0x230 [ 47.311587] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 47.316666] ? lock_downgrade+0x740/0x740 [ 47.320982] netdev_master_upper_dev_link+0x32/0x40 [ 47.326089] batadv_hardif_enable_interface+0x1ef/0xa10 [ 47.331889] batadv_softif_slave_add+0x8b/0xf0 [ 47.336497] ? batadv_softif_slave_del+0xc0/0xc0 [ 47.341256] do_set_master+0x19f/0x200 [ 47.345232] do_setlink+0x99f/0x2c20 [ 47.349141] ? rtnl_register+0x50/0x50 [ 47.353167] ? save_trace+0x290/0x290 [ 47.357121] ? is_bpf_text_address+0x7f/0x120 [ 47.361805] ? find_held_lock+0x35/0x130 [ 47.365867] ? is_bpf_text_address+0x7f/0x120 [ 47.370411] ? __lock_acquire+0x5f7/0x4620 [ 47.374757] ? __lock_acquire+0x5f7/0x4620 [ 47.378991] ? is_bpf_text_address+0xa6/0x120 [ 47.383488] ? trace_hardirqs_on+0x10/0x10 [ 47.387925] ? validate_nla+0x201/0x5f0 [ 47.392493] ? nla_parse+0x186/0x240 [ 47.396202] rtnl_newlink+0x11a7/0x1700 [ 47.400336] ? rtnl_link_unregister+0x200/0x200 [ 47.405262] ? avc_has_perm_noaudit+0x2b2/0x420 [ 47.409933] ? lock_acquire+0x16f/0x430 [ 47.413903] ? rtnetlink_rcv_msg+0x339/0xb70 [ 47.418802] ? rtnl_link_unregister+0x200/0x200 [ 47.423470] rtnetlink_rcv_msg+0x3da/0xb70 [ 47.427790] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 47.432377] ? netlink_deliver_tap+0x93/0x8f0 [ 47.436898] netlink_rcv_skb+0x14f/0x3c0 [ 47.440969] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 47.445731] ? lock_downgrade+0x740/0x740 [ 47.450027] ? netlink_ack+0x9a0/0x9a0 [ 47.454412] ? netlink_deliver_tap+0xba/0x8f0 [ 47.459178] rtnetlink_rcv+0x1d/0x30 [ 47.463074] netlink_unicast+0x44d/0x650 [ 47.467359] ? netlink_attachskb+0x6a0/0x6a0 [ 47.471859] ? security_netlink_send+0x81/0xb0 [ 47.476476] netlink_sendmsg+0x7c4/0xc60 [ 47.480750] ? netlink_unicast+0x650/0x650 [ 47.485244] ? security_socket_sendmsg+0x89/0xb0 [ 47.490215] ? netlink_unicast+0x650/0x650 [ 47.494598] sock_sendmsg+0xce/0x110 [ 47.498525] ___sys_sendmsg+0x70a/0x840 [ 47.502737] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 47.507864] ? lock_downgrade+0x740/0x740 [ 47.512019] ? get_pid_task+0xbf/0x140 [ 47.516173] ? proc_cwd_link+0x1b0/0x1b0 [ 47.520401] ? save_trace+0x290/0x290 [ 47.524204] ? vfs_write+0x25f/0x500 [ 47.527958] ? find_held_lock+0x35/0x130 [ 47.532303] ? vfs_write+0x25f/0x500 [ 47.536031] ? __fget_light+0x172/0x1f0 [ 47.540026] ? __fdget+0x1b/0x20 [ 47.543567] ? sockfd_lookup_light+0xb4/0x160 [ 47.548348] __sys_sendmsg+0xb9/0x140 [ 47.552270] ? SyS_shutdown+0x170/0x170 [ 47.556506] SyS_sendmsg+0x2d/0x50 [ 47.560227] ? __sys_sendmsg+0x140/0x140 [ 47.564682] do_syscall_64+0x1e8/0x640 [ 47.568922] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.573986] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 47.579336] RIP: 0033:0x4436e9 [ 47.582654] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 47.590933] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 47.598342] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 47.606442] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 47.613993] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 47.621465] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 47.631225] batman_adv: batadv0: Adding interface: ip6gretap0 executing program [ 47.637712] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 47.663901] batman_adv: batadv0: Interface activated: ip6gretap0 [ 47.674843] FAULT_INJECTION: forcing a failure. [ 47.674843] name failslab, interval 1, probability 0, space 0, times 0 [ 47.686593] CPU: 0 PID: 7332 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 47.694630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.704575] Call Trace: [ 47.707166] dump_stack+0x142/0x197 [ 47.710927] should_fail.cold+0x10f/0x159 [ 47.715187] should_failslab+0xdb/0x130 [ 47.719445] kmem_cache_alloc_node+0x287/0x780 [ 47.724411] __alloc_skb+0x9c/0x500 [ 47.728057] ? skb_trim+0x180/0x180 [ 47.731701] ? if_nlmsg_size+0x38f/0x810 [ 47.736014] rtmsg_ifinfo_build_skb+0x72/0x140 [ 47.740861] rtmsg_ifinfo_event.part.0+0x35/0xc0 [ 47.745610] rtnetlink_event+0xf4/0x120 [ 47.749934] notifier_call_chain+0x111/0x1b0 [ 47.754479] raw_notifier_call_chain+0x2e/0x40 [ 47.759062] call_netdevice_notifiers_info+0x56/0x70 [ 47.764260] __netdev_upper_dev_link+0x1da/0x230 [ 47.769531] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 47.774306] ? lock_downgrade+0x740/0x740 [ 47.778576] netdev_master_upper_dev_link+0x32/0x40 [ 47.783726] batadv_hardif_enable_interface+0x1ef/0xa10 [ 47.789425] batadv_softif_slave_add+0x8b/0xf0 [ 47.794027] ? batadv_softif_slave_del+0xc0/0xc0 [ 47.799175] do_set_master+0x19f/0x200 [ 47.803186] do_setlink+0x99f/0x2c20 [ 47.807208] ? rtnl_register+0x50/0x50 [ 47.811258] ? save_trace+0x290/0x290 [ 47.815283] ? is_bpf_text_address+0x7f/0x120 [ 47.819931] ? find_held_lock+0x35/0x130 [ 47.824311] ? is_bpf_text_address+0x7f/0x120 [ 47.829066] ? __lock_acquire+0x5f7/0x4620 [ 47.833308] ? __lock_acquire+0x5f7/0x4620 [ 47.837538] ? is_bpf_text_address+0xa6/0x120 [ 47.843110] ? trace_hardirqs_on+0x10/0x10 [ 47.847428] ? validate_nla+0x201/0x5f0 [ 47.851393] ? nla_parse+0x186/0x240 [ 47.855231] rtnl_newlink+0x11a7/0x1700 [ 47.859453] ? rtnl_link_unregister+0x200/0x200 [ 47.864122] ? avc_has_perm_noaudit+0x2b2/0x420 [ 47.869036] ? lock_acquire+0x16f/0x430 [ 47.873214] ? rtnetlink_rcv_msg+0x339/0xb70 [ 47.877738] ? rtnl_link_unregister+0x200/0x200 [ 47.882517] rtnetlink_rcv_msg+0x3da/0xb70 [ 47.887164] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 47.891776] ? netlink_deliver_tap+0x93/0x8f0 [ 47.896268] netlink_rcv_skb+0x14f/0x3c0 [ 47.900340] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 47.905364] ? lock_downgrade+0x740/0x740 [ 47.909514] ? netlink_ack+0x9a0/0x9a0 [ 47.913411] ? netlink_deliver_tap+0xba/0x8f0 [ 47.918040] rtnetlink_rcv+0x1d/0x30 [ 47.921768] netlink_unicast+0x44d/0x650 [ 47.926202] ? netlink_attachskb+0x6a0/0x6a0 [ 47.930876] ? security_netlink_send+0x81/0xb0 [ 47.935805] netlink_sendmsg+0x7c4/0xc60 [ 47.940007] ? netlink_unicast+0x650/0x650 [ 47.944498] ? security_socket_sendmsg+0x89/0xb0 [ 47.949659] ? netlink_unicast+0x650/0x650 [ 47.954020] sock_sendmsg+0xce/0x110 [ 47.957922] ___sys_sendmsg+0x70a/0x840 [ 47.962138] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 47.967042] ? lock_downgrade+0x740/0x740 [ 47.971541] ? get_pid_task+0xbf/0x140 [ 47.975444] ? proc_cwd_link+0x1b0/0x1b0 [ 47.979785] ? save_trace+0x290/0x290 [ 47.983742] ? vfs_write+0x25f/0x500 [ 47.987576] ? find_held_lock+0x35/0x130 [ 47.991697] ? vfs_write+0x25f/0x500 [ 47.995421] ? __fget_light+0x172/0x1f0 [ 47.999823] ? __fdget+0x1b/0x20 [ 48.003324] ? sockfd_lookup_light+0xb4/0x160 [ 48.008033] __sys_sendmsg+0xb9/0x140 [ 48.012284] ? SyS_shutdown+0x170/0x170 [ 48.016444] SyS_sendmsg+0x2d/0x50 [ 48.020387] ? __sys_sendmsg+0x140/0x140 [ 48.024687] do_syscall_64+0x1e8/0x640 [ 48.028725] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.033902] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.039458] RIP: 0033:0x4436e9 [ 48.042643] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.050713] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 48.058487] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 48.066423] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 48.073944] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 48.081617] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 48.091009] batman_adv: batadv0: Adding interface: bridge0 executing program executing program [ 48.097052] batman_adv: batadv0: The MTU of interface bridge0 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. [ 48.123469] batman_adv: batadv0: Interface activated: bridge0 [ 48.134958] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 48.146716] FAULT_INJECTION: forcing a failure. [ 48.146716] name failslab, interval 1, probability 0, space 0, times 0 [ 48.158926] CPU: 1 PID: 7334 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 48.167101] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.176606] Call Trace: [ 48.179313] dump_stack+0x142/0x197 [ 48.183118] should_fail.cold+0x10f/0x159 [ 48.187578] should_failslab+0xdb/0x130 [ 48.191572] kmem_cache_alloc+0x2d7/0x780 [ 48.195867] ? memcpy+0x46/0x50 [ 48.199165] ? kstrdup+0x5a/0x70 [ 48.202713] __kernfs_new_node+0x70/0x480 [ 48.206893] kernfs_new_node+0x80/0xf0 [ 48.210809] kernfs_create_link+0x2c/0x170 [ 48.215146] sysfs_do_create_link_sd.isra.0+0x90/0x120 [ 48.220551] sysfs_create_link+0x65/0xc0 [ 48.224631] netdev_adjacent_sysfs_add+0xa7/0xd0 [ 48.229490] ? napi_disable+0x90/0x90 [ 48.233325] __netdev_adjacent_dev_insert+0x487/0x6a0 [ 48.238700] __netdev_upper_dev_link+0x1be/0x230 [ 48.243594] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 48.248355] ? lock_downgrade+0x740/0x740 [ 48.252509] netdev_master_upper_dev_link+0x32/0x40 [ 48.257758] batadv_hardif_enable_interface+0x1ef/0xa10 [ 48.263146] batadv_softif_slave_add+0x8b/0xf0 [ 48.267737] ? batadv_softif_slave_del+0xc0/0xc0 [ 48.272811] do_set_master+0x19f/0x200 [ 48.276941] do_setlink+0x99f/0x2c20 [ 48.280836] ? rtnl_register+0x50/0x50 [ 48.284963] ? save_trace+0x290/0x290 [ 48.289157] ? is_bpf_text_address+0x7f/0x120 [ 48.294001] ? find_held_lock+0x35/0x130 [ 48.298199] ? is_bpf_text_address+0x7f/0x120 [ 48.302855] ? __lock_acquire+0x5f7/0x4620 [ 48.307271] ? __lock_acquire+0x5f7/0x4620 [ 48.311822] ? is_bpf_text_address+0xa6/0x120 [ 48.316980] ? trace_hardirqs_on+0x10/0x10 [ 48.321273] ? validate_nla+0x201/0x5f0 [ 48.325264] ? nla_parse+0x186/0x240 [ 48.328992] rtnl_newlink+0x11a7/0x1700 [ 48.332972] ? rtnl_link_unregister+0x200/0x200 [ 48.337858] ? avc_has_perm_noaudit+0x2b2/0x420 [ 48.342705] ? lock_acquire+0x16f/0x430 [ 48.346697] ? rtnetlink_rcv_msg+0x339/0xb70 [ 48.351126] ? rtnl_link_unregister+0x200/0x200 [ 48.355800] rtnetlink_rcv_msg+0x3da/0xb70 [ 48.360231] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 48.365072] ? netlink_deliver_tap+0x93/0x8f0 [ 48.370049] netlink_rcv_skb+0x14f/0x3c0 [ 48.374253] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 48.378976] ? lock_downgrade+0x740/0x740 [ 48.383444] ? netlink_ack+0x9a0/0x9a0 [ 48.387448] ? netlink_deliver_tap+0xba/0x8f0 [ 48.392219] rtnetlink_rcv+0x1d/0x30 [ 48.395999] netlink_unicast+0x44d/0x650 [ 48.400175] ? netlink_attachskb+0x6a0/0x6a0 [ 48.405021] ? security_netlink_send+0x81/0xb0 [ 48.409849] netlink_sendmsg+0x7c4/0xc60 [ 48.414104] ? netlink_unicast+0x650/0x650 [ 48.418614] ? security_socket_sendmsg+0x89/0xb0 [ 48.423498] ? netlink_unicast+0x650/0x650 [ 48.427823] sock_sendmsg+0xce/0x110 [ 48.431985] ___sys_sendmsg+0x70a/0x840 [ 48.436509] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 48.441268] ? lock_downgrade+0x740/0x740 [ 48.445757] ? get_pid_task+0xbf/0x140 [ 48.449878] ? proc_cwd_link+0x1b0/0x1b0 [ 48.454192] ? save_trace+0x290/0x290 [ 48.457987] ? vfs_write+0x25f/0x500 [ 48.461913] ? find_held_lock+0x35/0x130 [ 48.466301] ? vfs_write+0x25f/0x500 [ 48.470084] ? __fget_light+0x172/0x1f0 [ 48.474064] ? __fdget+0x1b/0x20 [ 48.477427] ? sockfd_lookup_light+0xb4/0x160 [ 48.482361] __sys_sendmsg+0xb9/0x140 [ 48.486295] ? SyS_shutdown+0x170/0x170 [ 48.490370] SyS_sendmsg+0x2d/0x50 [ 48.493911] ? __sys_sendmsg+0x140/0x140 [ 48.498112] do_syscall_64+0x1e8/0x640 [ 48.502158] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.507014] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.512480] RIP: 0033:0x4436e9 [ 48.515665] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.523492] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 48.531059] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 48.538385] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 48.546380] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff executing program [ 48.553924] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 48.567115] FAULT_INJECTION: forcing a failure. [ 48.567115] name failslab, interval 1, probability 0, space 0, times 0 [ 48.578885] CPU: 1 PID: 7335 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 48.586921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.596711] Call Trace: [ 48.599420] dump_stack+0x142/0x197 [ 48.603048] should_fail.cold+0x10f/0x159 [ 48.611673] should_failslab+0xdb/0x130 [ 48.615648] kmem_cache_alloc_node+0x287/0x780 [ 48.620526] __alloc_skb+0x9c/0x500 [ 48.624342] ? skb_trim+0x180/0x180 [ 48.628413] ? if_nlmsg_size+0x38f/0x810 [ 48.632567] rtmsg_ifinfo_build_skb+0x72/0x140 [ 48.637632] rtmsg_ifinfo_event.part.0+0x35/0xc0 [ 48.642399] rtnetlink_event+0xf4/0x120 [ 48.646590] notifier_call_chain+0x111/0x1b0 [ 48.651238] raw_notifier_call_chain+0x2e/0x40 [ 48.656109] call_netdevice_notifiers_info+0x56/0x70 [ 48.661551] __netdev_upper_dev_link+0x1da/0x230 [ 48.666429] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 48.671436] ? lock_downgrade+0x740/0x740 [ 48.675758] netdev_master_upper_dev_link+0x32/0x40 [ 48.680796] batadv_hardif_enable_interface+0x1ef/0xa10 [ 48.686417] batadv_softif_slave_add+0x8b/0xf0 [ 48.691017] ? batadv_softif_slave_del+0xc0/0xc0 [ 48.695892] do_set_master+0x19f/0x200 [ 48.699872] do_setlink+0x99f/0x2c20 [ 48.703912] ? rtnl_register+0x50/0x50 [ 48.707846] ? save_trace+0x290/0x290 [ 48.711863] ? is_bpf_text_address+0x7f/0x120 [ 48.716564] ? find_held_lock+0x35/0x130 [ 48.720772] ? is_bpf_text_address+0x7f/0x120 [ 48.725507] ? __lock_acquire+0x5f7/0x4620 [ 48.730049] ? __lock_acquire+0x5f7/0x4620 [ 48.734382] ? is_bpf_text_address+0xa6/0x120 [ 48.739061] ? trace_hardirqs_on+0x10/0x10 [ 48.743502] ? validate_nla+0x201/0x5f0 [ 48.747477] ? nla_parse+0x186/0x240 [ 48.751191] rtnl_newlink+0x11a7/0x1700 [ 48.755395] ? rtnl_link_unregister+0x200/0x200 [ 48.760073] ? avc_has_perm_noaudit+0x2b2/0x420 [ 48.764902] ? lock_acquire+0x16f/0x430 [ 48.769085] ? rtnetlink_rcv_msg+0x339/0xb70 [ 48.773813] ? rtnl_link_unregister+0x200/0x200 [ 48.778607] rtnetlink_rcv_msg+0x3da/0xb70 [ 48.783201] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 48.787926] ? netlink_deliver_tap+0x93/0x8f0 [ 48.792531] netlink_rcv_skb+0x14f/0x3c0 [ 48.796597] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 48.801187] ? lock_downgrade+0x740/0x740 [ 48.805504] ? netlink_ack+0x9a0/0x9a0 [ 48.809615] ? netlink_deliver_tap+0xba/0x8f0 [ 48.814194] rtnetlink_rcv+0x1d/0x30 [ 48.817906] netlink_unicast+0x44d/0x650 [ 48.821983] ? netlink_attachskb+0x6a0/0x6a0 [ 48.826710] ? security_netlink_send+0x81/0xb0 [ 48.831486] netlink_sendmsg+0x7c4/0xc60 [ 48.835638] ? netlink_unicast+0x650/0x650 [ 48.840057] ? security_socket_sendmsg+0x89/0xb0 [ 48.844956] ? netlink_unicast+0x650/0x650 [ 48.849310] sock_sendmsg+0xce/0x110 [ 48.853160] ___sys_sendmsg+0x70a/0x840 [ 48.857298] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 48.862054] ? lock_downgrade+0x740/0x740 [ 48.866316] ? get_pid_task+0xbf/0x140 [ 48.870246] ? proc_cwd_link+0x1b0/0x1b0 [ 48.874319] ? save_trace+0x290/0x290 [ 48.878216] ? vfs_write+0x25f/0x500 [ 48.882073] ? find_held_lock+0x35/0x130 [ 48.886242] ? vfs_write+0x25f/0x500 [ 48.890343] ? __fget_light+0x172/0x1f0 [ 48.894425] ? __fdget+0x1b/0x20 [ 48.897785] ? sockfd_lookup_light+0xb4/0x160 [ 48.902408] __sys_sendmsg+0xb9/0x140 [ 48.906341] ? SyS_shutdown+0x170/0x170 [ 48.910451] SyS_sendmsg+0x2d/0x50 [ 48.914354] ? __sys_sendmsg+0x140/0x140 [ 48.918714] do_syscall_64+0x1e8/0x640 [ 48.922702] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.928047] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.933574] RIP: 0033:0x4436e9 [ 48.936970] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.945164] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 48.952802] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 48.960098] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 48.967490] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 48.975144] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 48.984710] batman_adv: batadv0: Adding interface: team0 executing program [ 48.990478] batman_adv: batadv0: The MTU of interface team0 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. [ 49.015660] batman_adv: batadv0: Interface activated: team0 [ 49.025549] FAULT_INJECTION: forcing a failure. [ 49.025549] name failslab, interval 1, probability 0, space 0, times 0 [ 49.037101] CPU: 0 PID: 7336 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 49.045199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.054786] Call Trace: [ 49.057526] dump_stack+0x142/0x197 [ 49.061450] should_fail.cold+0x10f/0x159 [ 49.065604] should_failslab+0xdb/0x130 [ 49.069725] kmem_cache_alloc+0x2d7/0x780 [ 49.074028] ? sysfs_do_create_link_sd.isra.0+0x82/0x120 [ 49.079991] ? find_held_lock+0x35/0x130 [ 49.084285] __kernfs_new_node+0x70/0x480 [ 49.088440] kernfs_new_node+0x80/0xf0 [ 49.092965] kernfs_create_link+0x2c/0x170 [ 49.097597] sysfs_do_create_link_sd.isra.0+0x90/0x120 [ 49.103187] sysfs_create_link+0x65/0xc0 [ 49.107260] __netdev_adjacent_dev_insert+0x34c/0x6a0 [ 49.112933] __netdev_upper_dev_link+0x196/0x230 [ 49.118459] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 49.123425] ? lock_downgrade+0x740/0x740 [ 49.127574] netdev_master_upper_dev_link+0x32/0x40 [ 49.132595] batadv_hardif_enable_interface+0x1ef/0xa10 [ 49.138059] batadv_softif_slave_add+0x8b/0xf0 [ 49.143373] ? batadv_softif_slave_del+0xc0/0xc0 [ 49.149045] do_set_master+0x19f/0x200 [ 49.153215] do_setlink+0x99f/0x2c20 [ 49.157033] ? rtnl_register+0x50/0x50 [ 49.160923] ? save_trace+0x290/0x290 [ 49.164921] ? is_bpf_text_address+0x7f/0x120 [ 49.169516] ? find_held_lock+0x35/0x130 [ 49.173597] ? is_bpf_text_address+0x7f/0x120 [ 49.178094] ? __lock_acquire+0x5f7/0x4620 [ 49.182331] ? __lock_acquire+0x5f7/0x4620 [ 49.186774] ? is_bpf_text_address+0xa6/0x120 [ 49.191456] ? trace_hardirqs_on+0x10/0x10 [ 49.195685] ? validate_nla+0x201/0x5f0 [ 49.200619] ? nla_parse+0x186/0x240 [ 49.204422] rtnl_newlink+0x11a7/0x1700 [ 49.208492] ? rtnl_link_unregister+0x200/0x200 [ 49.213701] ? avc_has_perm_noaudit+0x2b2/0x420 [ 49.218493] ? lock_acquire+0x16f/0x430 [ 49.222649] ? rtnetlink_rcv_msg+0x339/0xb70 [ 49.227365] ? rtnl_link_unregister+0x200/0x200 [ 49.232044] rtnetlink_rcv_msg+0x3da/0xb70 [ 49.236621] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 49.241204] ? netlink_deliver_tap+0x93/0x8f0 [ 49.245907] netlink_rcv_skb+0x14f/0x3c0 [ 49.250186] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 49.254865] ? lock_downgrade+0x740/0x740 [ 49.259273] ? netlink_ack+0x9a0/0x9a0 [ 49.263168] ? netlink_deliver_tap+0xba/0x8f0 [ 49.267962] rtnetlink_rcv+0x1d/0x30 [ 49.271681] netlink_unicast+0x44d/0x650 [ 49.275831] ? netlink_attachskb+0x6a0/0x6a0 [ 49.280334] ? security_netlink_send+0x81/0xb0 [ 49.285663] netlink_sendmsg+0x7c4/0xc60 [ 49.289892] ? netlink_unicast+0x650/0x650 [ 49.294363] ? security_socket_sendmsg+0x89/0xb0 [ 49.299488] ? netlink_unicast+0x650/0x650 [ 49.304132] sock_sendmsg+0xce/0x110 [ 49.307852] ___sys_sendmsg+0x70a/0x840 [ 49.311981] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 49.316740] ? lock_downgrade+0x740/0x740 [ 49.321056] ? get_pid_task+0xbf/0x140 [ 49.324954] ? proc_cwd_link+0x1b0/0x1b0 [ 49.329124] ? save_trace+0x290/0x290 [ 49.333072] ? vfs_write+0x25f/0x500 [ 49.337010] ? find_held_lock+0x35/0x130 [ 49.341230] ? vfs_write+0x25f/0x500 [ 49.344954] ? __fget_light+0x172/0x1f0 [ 49.349062] ? __fdget+0x1b/0x20 [ 49.352555] ? sockfd_lookup_light+0xb4/0x160 [ 49.357205] __sys_sendmsg+0xb9/0x140 [ 49.361002] ? SyS_shutdown+0x170/0x170 [ 49.364980] SyS_sendmsg+0x2d/0x50 [ 49.368713] ? __sys_sendmsg+0x140/0x140 [ 49.372783] do_syscall_64+0x1e8/0x640 [ 49.376881] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.381730] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.386996] RIP: 0033:0x4436e9 [ 49.390344] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.398405] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 executing program executing program [ 49.405769] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 49.413246] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 49.420727] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 49.428180] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program [ 49.488272] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.498985] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.511451] FAULT_INJECTION: forcing a failure. [ 49.511451] name failslab, interval 1, probability 0, space 0, times 0 [ 49.523668] CPU: 0 PID: 7342 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 49.531892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.541638] Call Trace: [ 49.545010] dump_stack+0x142/0x197 [ 49.548644] should_fail.cold+0x10f/0x159 [ 49.552867] should_failslab+0xdb/0x130 [ 49.556837] kmem_cache_alloc_node_trace+0x280/0x770 [ 49.561983] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 49.567746] __kmalloc_node_track_caller+0x3d/0x80 [ 49.572754] __kmalloc_reserve.isra.0+0x40/0xe0 [ 49.577421] __alloc_skb+0xcf/0x500 [ 49.581167] ? skb_trim+0x180/0x180 [ 49.585071] ? if_nlmsg_size+0x38f/0x810 [ 49.589129] rtmsg_ifinfo_build_skb+0x72/0x140 [ 49.593868] rtmsg_ifinfo_event.part.0+0x35/0xc0 [ 49.599144] rtnetlink_event+0xf4/0x120 [ 49.603265] notifier_call_chain+0x111/0x1b0 [ 49.607731] raw_notifier_call_chain+0x2e/0x40 [ 49.612616] call_netdevice_notifiers_info+0x56/0x70 [ 49.617714] __netdev_upper_dev_link+0x1da/0x230 [ 49.622819] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 49.627764] ? lock_downgrade+0x740/0x740 [ 49.632032] netdev_master_upper_dev_link+0x32/0x40 [ 49.637442] batadv_hardif_enable_interface+0x1ef/0xa10 [ 49.642937] batadv_softif_slave_add+0x8b/0xf0 [ 49.647519] ? batadv_softif_slave_del+0xc0/0xc0 [ 49.652496] do_set_master+0x19f/0x200 [ 49.656394] do_setlink+0x99f/0x2c20 [ 49.660234] ? rtnl_register+0x50/0x50 [ 49.664435] ? save_trace+0x290/0x290 [ 49.668780] ? is_bpf_text_address+0x7f/0x120 [ 49.673277] ? find_held_lock+0x35/0x130 [ 49.677487] ? is_bpf_text_address+0x7f/0x120 [ 49.682269] ? __lock_acquire+0x5f7/0x4620 [ 49.686656] ? __lock_acquire+0x5f7/0x4620 [ 49.691271] ? is_bpf_text_address+0xa6/0x120 [ 49.695762] ? trace_hardirqs_on+0x10/0x10 [ 49.700548] ? validate_nla+0x201/0x5f0 [ 49.704521] ? nla_parse+0x186/0x240 [ 49.708234] rtnl_newlink+0x11a7/0x1700 [ 49.712221] ? rtnl_link_unregister+0x200/0x200 [ 49.717204] ? avc_has_perm_noaudit+0x2b2/0x420 [ 49.721882] ? lock_acquire+0x16f/0x430 [ 49.725999] ? rtnetlink_rcv_msg+0x339/0xb70 [ 49.730446] ? rtnl_link_unregister+0x200/0x200 [ 49.735272] rtnetlink_rcv_msg+0x3da/0xb70 [ 49.739517] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 49.744653] ? netlink_deliver_tap+0x93/0x8f0 [ 49.749360] netlink_rcv_skb+0x14f/0x3c0 [ 49.753511] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 49.758184] ? lock_downgrade+0x740/0x740 [ 49.762326] ? netlink_ack+0x9a0/0x9a0 [ 49.766211] ? netlink_deliver_tap+0xba/0x8f0 [ 49.770800] rtnetlink_rcv+0x1d/0x30 [ 49.774514] netlink_unicast+0x44d/0x650 [ 49.778707] ? netlink_attachskb+0x6a0/0x6a0 [ 49.783121] ? security_netlink_send+0x81/0xb0 [ 49.787763] netlink_sendmsg+0x7c4/0xc60 [ 49.791836] ? netlink_unicast+0x650/0x650 [ 49.796074] ? security_socket_sendmsg+0x89/0xb0 [ 49.800895] ? netlink_unicast+0x650/0x650 [ 49.805262] sock_sendmsg+0xce/0x110 [ 49.809059] ___sys_sendmsg+0x70a/0x840 [ 49.813038] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 49.817949] ? lock_downgrade+0x740/0x740 [ 49.822166] ? get_pid_task+0xbf/0x140 [ 49.826173] ? proc_cwd_link+0x1b0/0x1b0 [ 49.830578] ? save_trace+0x290/0x290 [ 49.834684] ? vfs_write+0x25f/0x500 [ 49.838487] ? find_held_lock+0x35/0x130 [ 49.842788] ? vfs_write+0x25f/0x500 [ 49.846722] ? __fget_light+0x172/0x1f0 [ 49.850852] ? __fdget+0x1b/0x20 [ 49.854226] ? sockfd_lookup_light+0xb4/0x160 [ 49.858900] __sys_sendmsg+0xb9/0x140 [ 49.862716] ? SyS_shutdown+0x170/0x170 [ 49.866694] SyS_sendmsg+0x2d/0x50 [ 49.870244] ? __sys_sendmsg+0x140/0x140 [ 49.874714] do_syscall_64+0x1e8/0x640 [ 49.878682] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.883539] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.888992] RIP: 0033:0x4436e9 [ 49.892173] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.899945] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 49.907334] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 49.914785] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 49.922321] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 49.929962] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 executing program [ 49.940403] batman_adv: batadv0: Adding interface: veth0 [ 49.946071] batman_adv: batadv0: The MTU of interface veth0 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. [ 49.971486] batman_adv: batadv0: Interface activated: veth0 [ 49.982549] FAULT_INJECTION: forcing a failure. [ 49.982549] name failslab, interval 1, probability 0, space 0, times 0 [ 49.993860] CPU: 1 PID: 7343 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 50.002149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.011878] Call Trace: [ 50.014477] dump_stack+0x142/0x197 [ 50.018118] should_fail.cold+0x10f/0x159 [ 50.022367] should_failslab+0xdb/0x130 [ 50.026344] kmem_cache_alloc+0x2d7/0x780 [ 50.030616] ? memcpy+0x46/0x50 [ 50.033892] ? kstrdup+0x5a/0x70 [ 50.037502] __kernfs_new_node+0x70/0x480 [ 50.041948] kernfs_new_node+0x80/0xf0 [ 50.045972] kernfs_create_link+0x2c/0x170 [ 50.050363] sysfs_do_create_link_sd.isra.0+0x90/0x120 [ 50.055792] sysfs_create_link+0x65/0xc0 [ 50.059855] netdev_adjacent_sysfs_add+0xa7/0xd0 [ 50.064680] ? napi_disable+0x90/0x90 [ 50.068660] __netdev_adjacent_dev_insert+0x487/0x6a0 [ 50.073855] __netdev_upper_dev_link+0x1be/0x230 [ 50.079031] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 50.083931] ? lock_downgrade+0x740/0x740 [ 50.088421] netdev_master_upper_dev_link+0x32/0x40 [ 50.093436] batadv_hardif_enable_interface+0x1ef/0xa10 [ 50.098919] batadv_softif_slave_add+0x8b/0xf0 [ 50.103612] ? batadv_softif_slave_del+0xc0/0xc0 [ 50.108363] do_set_master+0x19f/0x200 [ 50.112525] do_setlink+0x99f/0x2c20 [ 50.116398] ? rtnl_register+0x50/0x50 [ 50.120609] ? save_trace+0x290/0x290 [ 50.124445] ? is_bpf_text_address+0x7f/0x120 [ 50.129389] ? find_held_lock+0x35/0x130 [ 50.133658] ? is_bpf_text_address+0x7f/0x120 [ 50.138272] ? __lock_acquire+0x5f7/0x4620 [ 50.142770] ? __lock_acquire+0x5f7/0x4620 [ 50.147199] ? is_bpf_text_address+0xa6/0x120 [ 50.151785] ? trace_hardirqs_on+0x10/0x10 [ 50.156186] ? validate_nla+0x201/0x5f0 [ 50.160436] ? nla_parse+0x186/0x240 [ 50.164155] rtnl_newlink+0x11a7/0x1700 [ 50.168216] ? rtnl_link_unregister+0x200/0x200 [ 50.173041] ? avc_has_perm_noaudit+0x2b2/0x420 [ 50.177718] ? lock_acquire+0x16f/0x430 [ 50.181692] ? rtnetlink_rcv_msg+0x339/0xb70 [ 50.186763] ? perf_trace_cfg80211_report_wowlan_wakeup+0x4c8/0xed0 [ 50.193170] ? rtnl_link_unregister+0x200/0x200 [ 50.197836] rtnetlink_rcv_msg+0x3da/0xb70 [ 50.202179] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 50.206783] ? netlink_deliver_tap+0x93/0x8f0 [ 50.211735] netlink_rcv_skb+0x14f/0x3c0 [ 50.216051] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 50.220638] ? lock_downgrade+0x740/0x740 [ 50.224787] ? netlink_ack+0x9a0/0x9a0 [ 50.228669] ? netlink_deliver_tap+0xba/0x8f0 [ 50.233449] rtnetlink_rcv+0x1d/0x30 [ 50.237484] netlink_unicast+0x44d/0x650 [ 50.241550] ? netlink_attachskb+0x6a0/0x6a0 [ 50.246054] ? security_netlink_send+0x81/0xb0 [ 50.250742] netlink_sendmsg+0x7c4/0xc60 [ 50.255117] ? netlink_unicast+0x650/0x650 [ 50.259352] ? security_socket_sendmsg+0x89/0xb0 [ 50.264196] ? netlink_unicast+0x650/0x650 [ 50.268572] sock_sendmsg+0xce/0x110 [ 50.272294] ___sys_sendmsg+0x70a/0x840 [ 50.276395] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 50.281369] ? lock_downgrade+0x740/0x740 [ 50.285798] ? get_pid_task+0xbf/0x140 [ 50.289693] ? proc_cwd_link+0x1b0/0x1b0 [ 50.293920] ? save_trace+0x290/0x290 [ 50.297849] ? vfs_write+0x25f/0x500 [ 50.301749] ? find_held_lock+0x35/0x130 [ 50.305933] ? vfs_write+0x25f/0x500 [ 50.309795] ? __fget_light+0x172/0x1f0 [ 50.320046] ? __fdget+0x1b/0x20 [ 50.323618] ? sockfd_lookup_light+0xb4/0x160 [ 50.328295] __sys_sendmsg+0xb9/0x140 [ 50.332253] ? SyS_shutdown+0x170/0x170 [ 50.336296] SyS_sendmsg+0x2d/0x50 [ 50.340155] ? __sys_sendmsg+0x140/0x140 [ 50.344225] do_syscall_64+0x1e8/0x640 [ 50.348251] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.353101] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 50.358288] RIP: 0033:0x4436e9 [ 50.361473] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 50.369458] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 50.376734] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 50.384370] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac executing program [ 50.391797] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 50.399302] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 50.413109] FAULT_INJECTION: forcing a failure. [ 50.413109] name failslab, interval 1, probability 0, space 0, times 0 [ 50.425131] CPU: 0 PID: 7344 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 50.433169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.442660] Call Trace: [ 50.445388] dump_stack+0x142/0x197 [ 50.449014] should_fail.cold+0x10f/0x159 [ 50.453270] should_failslab+0xdb/0x130 [ 50.457466] kmem_cache_alloc_node_trace+0x280/0x770 [ 50.462580] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 50.468447] __kmalloc_node_track_caller+0x3d/0x80 [ 50.473455] __kmalloc_reserve.isra.0+0x40/0xe0 [ 50.478124] __alloc_skb+0xcf/0x500 [ 50.481962] ? skb_trim+0x180/0x180 [ 50.485596] ? if_nlmsg_size+0x38f/0x810 [ 50.489660] rtmsg_ifinfo_build_skb+0x72/0x140 [ 50.494243] rtmsg_ifinfo_event.part.0+0x35/0xc0 [ 50.499360] rtnetlink_event+0xf4/0x120 [ 50.503509] notifier_call_chain+0x111/0x1b0 [ 50.508592] raw_notifier_call_chain+0x2e/0x40 [ 50.513187] call_netdevice_notifiers_info+0x56/0x70 [ 50.518290] __netdev_upper_dev_link+0x1da/0x230 [ 50.523160] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 50.528031] ? lock_downgrade+0x740/0x740 [ 50.532302] netdev_master_upper_dev_link+0x32/0x40 [ 50.537455] batadv_hardif_enable_interface+0x1ef/0xa10 [ 50.542966] batadv_softif_slave_add+0x8b/0xf0 [ 50.547656] ? batadv_softif_slave_del+0xc0/0xc0 [ 50.552538] do_set_master+0x19f/0x200 [ 50.556565] do_setlink+0x99f/0x2c20 [ 50.560437] ? rtnl_register+0x50/0x50 [ 50.564323] ? save_trace+0x290/0x290 [ 50.568403] ? is_bpf_text_address+0x7f/0x120 [ 50.573020] ? find_held_lock+0x35/0x130 [ 50.577088] ? is_bpf_text_address+0x7f/0x120 [ 50.581751] ? __lock_acquire+0x5f7/0x4620 [ 50.585996] ? __lock_acquire+0x5f7/0x4620 [ 50.590263] ? is_bpf_text_address+0xa6/0x120 [ 50.595001] ? trace_hardirqs_on+0x10/0x10 [ 50.599454] ? validate_nla+0x201/0x5f0 [ 50.603578] ? nla_parse+0x186/0x240 [ 50.607598] rtnl_newlink+0x11a7/0x1700 [ 50.611581] ? rtnl_link_unregister+0x200/0x200 [ 50.616356] ? avc_has_perm_noaudit+0x2b2/0x420 [ 50.621046] ? lock_acquire+0x16f/0x430 [ 50.625020] ? rtnetlink_rcv_msg+0x339/0xb70 [ 50.629562] ? rtnl_link_unregister+0x200/0x200 [ 50.634410] rtnetlink_rcv_msg+0x3da/0xb70 [ 50.638642] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 50.643618] ? netlink_deliver_tap+0x93/0x8f0 [ 50.648705] netlink_rcv_skb+0x14f/0x3c0 [ 50.652969] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 50.657676] ? lock_downgrade+0x740/0x740 [ 50.661953] ? netlink_ack+0x9a0/0x9a0 [ 50.665858] ? netlink_deliver_tap+0xba/0x8f0 [ 50.670757] rtnetlink_rcv+0x1d/0x30 [ 50.674934] netlink_unicast+0x44d/0x650 [ 50.679100] ? netlink_attachskb+0x6a0/0x6a0 [ 50.683921] ? security_netlink_send+0x81/0xb0 [ 50.688649] netlink_sendmsg+0x7c4/0xc60 [ 50.693199] ? netlink_unicast+0x650/0x650 [ 50.697436] ? security_socket_sendmsg+0x89/0xb0 [ 50.702265] ? netlink_unicast+0x650/0x650 [ 50.706498] sock_sendmsg+0xce/0x110 [ 50.710536] ___sys_sendmsg+0x70a/0x840 [ 50.714607] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 50.719458] ? lock_downgrade+0x740/0x740 [ 50.723817] ? get_pid_task+0xbf/0x140 [ 50.728516] ? proc_cwd_link+0x1b0/0x1b0 [ 50.732941] ? save_trace+0x290/0x290 [ 50.736922] ? vfs_write+0x25f/0x500 [ 50.740772] ? find_held_lock+0x35/0x130 [ 50.745446] ? vfs_write+0x25f/0x500 [ 50.749201] ? __fget_light+0x172/0x1f0 [ 50.753326] ? __fdget+0x1b/0x20 [ 50.756891] ? sockfd_lookup_light+0xb4/0x160 [ 50.761386] __sys_sendmsg+0xb9/0x140 [ 50.765184] ? SyS_shutdown+0x170/0x170 [ 50.769266] SyS_sendmsg+0x2d/0x50 [ 50.772802] ? __sys_sendmsg+0x140/0x140 [ 50.776980] do_syscall_64+0x1e8/0x640 [ 50.780960] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.786133] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 50.791474] RIP: 0033:0x4436e9 [ 50.794664] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 50.802418] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 50.809878] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 50.817578] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 50.824848] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 50.832229] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 executing program [ 50.843775] batman_adv: batadv0: Adding interface: veth0_to_bridge [ 50.850177] batman_adv: batadv0: The MTU of interface veth0_to_bridge 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. [ 50.876169] batman_adv: batadv0: Interface activated: veth0_to_bridge [ 50.887905] device bridge_slave_0 left promiscuous mode [ 50.893939] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.900510] FAULT_INJECTION: forcing a failure. [ 50.900510] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 50.913279] CPU: 1 PID: 7345 Comm: syz-executor519 Not tainted 4.14.170-syzkaller #0 [ 50.921714] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.931296] Call Trace: [ 50.933890] dump_stack+0x142/0x197 [ 50.937519] should_fail.cold+0x10f/0x159 [ 50.941673] __alloc_pages_nodemask+0x1d6/0x7a0 [ 50.946518] ? __alloc_pages_slowpath+0x2930/0x2930 [ 50.951954] ? trace_hardirqs_on+0x10/0x10 [ 50.956192] ? vprintk_func+0x65/0x159 [ 50.960283] ? mark_held_locks+0xb1/0x100 [ 50.964439] cache_grow_begin+0x80/0x400 [ 50.968672] kmem_cache_alloc_node+0x6a4/0x780 [ 50.973508] __alloc_skb+0x9c/0x500 [ 50.977180] ? skb_trim+0x180/0x180 [ 50.981035] br_ifinfo_notify.part.0+0x8f/0x180 [ 50.986018] br_ifinfo_notify+0x28/0x40 [ 50.990067] br_stp_disable_port+0xc3/0x180 [ 50.994726] del_nbp+0x128/0x8b0 [ 50.998099] br_del_if+0xdf/0x470 [ 51.001548] ? __lock_acquire+0x5f7/0x4620 [ 51.005777] br_del_slave+0x21/0x30 [ 51.009518] ? br_fix_features+0x30/0x30 [ 51.013690] do_set_master+0xd5/0x200 [ 51.017574] do_setlink+0x99f/0x2c20 [ 51.021530] ? trace_hardirqs_on+0x10/0x10 [ 51.025963] ? rtnl_register+0x50/0x50 [ 51.029930] ? __lock_acquire+0x5f7/0x4620 [ 51.034165] ? is_bpf_text_address+0x7f/0x120 [ 51.038872] ? trace_hardirqs_on+0x10/0x10 [ 51.041993] ------------[ cut here ]------------ [ 51.043165] ? save_trace+0x290/0x290 [ 51.043181] ? trace_hardirqs_on+0x10/0x10 [ 51.048137] WARNING: CPU: 0 PID: 5 at net/batman-adv/bat_iv_ogm.c:555 batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 [ 51.051961] ? save_trace+0x290/0x290 [ 51.056183] Kernel panic - not syncing: panic_on_warn set ... [ 51.056183] [ 51.068086] ? is_bpf_text_address+0x7f/0x120 [ 51.083935] ? find_held_lock+0x35/0x130 [ 51.088009] ? is_bpf_text_address+0x7f/0x120 [ 51.092668] ? __lock_acquire+0x5f7/0x4620 [ 51.097125] ? __lock_acquire+0x5f7/0x4620 [ 51.101357] rtnl_newlink+0x11a7/0x1700 [ 51.105340] ? trace_hardirqs_on+0x10/0x10 [ 51.109670] ? validate_nla+0x201/0x5f0 [ 51.113653] ? nla_parse+0x186/0x240 [ 51.117463] ? memset+0x32/0x40 [ 51.121061] ? rtnl_newlink+0x8d8/0x1700 [ 51.125137] ? rtnl_link_unregister+0x200/0x200 [ 51.129812] ? avc_has_perm_noaudit+0x2b2/0x420 [ 51.134700] ? lock_acquire+0x16f/0x430 [ 51.138857] ? rtnetlink_rcv_msg+0x339/0xb70 [ 51.143297] ? rtnl_link_unregister+0x200/0x200 [ 51.147991] rtnetlink_rcv_msg+0x3da/0xb70 [ 51.152223] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 51.156801] ? netlink_deliver_tap+0x93/0x8f0 [ 51.161319] netlink_rcv_skb+0x14f/0x3c0 [ 51.165444] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 51.170132] ? lock_downgrade+0x740/0x740 [ 51.174536] ? netlink_ack+0x9a0/0x9a0 [ 51.178418] ? netlink_deliver_tap+0xba/0x8f0 [ 51.182910] rtnetlink_rcv+0x1d/0x30 [ 51.186850] netlink_unicast+0x44d/0x650 [ 51.191038] ? netlink_attachskb+0x6a0/0x6a0 [ 51.195448] ? security_netlink_send+0x81/0xb0 [ 51.200320] netlink_sendmsg+0x7c4/0xc60 [ 51.204539] ? netlink_unicast+0x650/0x650 [ 51.208778] ? security_socket_sendmsg+0x89/0xb0 [ 51.213541] ? netlink_unicast+0x650/0x650 [ 51.217773] sock_sendmsg+0xce/0x110 [ 51.221487] ___sys_sendmsg+0x70a/0x840 [ 51.225457] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 51.230213] ? lock_downgrade+0x740/0x740 [ 51.234479] ? get_pid_task+0xbf/0x140 [ 51.239256] ? proc_cwd_link+0x1b0/0x1b0 [ 51.243315] ? save_trace+0x290/0x290 [ 51.247261] ? vfs_write+0x25f/0x500 [ 51.251059] ? find_held_lock+0x35/0x130 [ 51.255134] ? vfs_write+0x25f/0x500 [ 51.258939] ? __fget_light+0x172/0x1f0 [ 51.263013] ? __fdget+0x1b/0x20 [ 51.266376] ? sockfd_lookup_light+0xb4/0x160 [ 51.271131] __sys_sendmsg+0xb9/0x140 [ 51.275069] ? SyS_shutdown+0x170/0x170 [ 51.279051] SyS_sendmsg+0x2d/0x50 [ 51.282586] ? __sys_sendmsg+0x140/0x140 [ 51.286680] do_syscall_64+0x1e8/0x640 [ 51.291001] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.295963] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 51.301165] RIP: 0033:0x4436e9 [ 51.304348] RSP: 002b:00007ffe5fa14cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.312296] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004436e9 [ 51.319568] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 51.327032] RBP: 0000000000000000 R08: 0000000000000002 R09: 00000000bb1414ac [ 51.334372] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 51.341650] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 51.348942] CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.170-syzkaller #0 [ 51.356427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.366174] Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet [ 51.373591] Call Trace: [ 51.376303] dump_stack+0x142/0x197 [ 51.379924] panic+0x1f9/0x42d [ 51.383131] ? add_taint.cold+0x16/0x16 [ 51.387357] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 [ 51.394031] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 [ 51.400587] __warn.cold+0x2f/0x2f [ 51.404122] ? ist_end_non_atomic+0x10/0x10 [ 51.408996] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 [ 51.415617] report_bug+0x216/0x254 [ 51.419360] do_error_trap+0x1bb/0x310 [ 51.423411] ? math_error+0x360/0x360 [ 51.427219] ? debug_object_deactivate+0x1cc/0x350 [ 51.432145] ? find_held_lock+0x35/0x130 [ 51.436245] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.441084] do_invalid_op+0x1b/0x20 [ 51.444785] invalid_op+0x1b/0x40 [ 51.448263] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 [ 51.455671] RSP: 0018:ffff8880a9cdfcc8 EFLAGS: 00010297 [ 51.461026] RAX: ffff8880a9cd2140 RBX: ffff8880a464cd48 RCX: ffff8880a9cd29c0 [ 51.468413] RDX: 0000000000000000 RSI: ffffffff87f84e60 RDI: ffff888091677ae8 [ 51.475768] RBP: ffff8880a9cdfd38 R08: 0000000000007133 R09: ffffffff89588218 [ 51.483124] R10: ffff8880a9cd29e8 R11: ffff8880a9cd2140 R12: ffff8880a39c5b00 [ 51.490530] R13: ffff8880a464cd00 R14: ffff8880954ae080 R15: ffff888091677a80 [ 51.497952] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5a2/0x680 [ 51.504882] process_one_work+0x863/0x1600 [ 51.509123] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 51.514038] worker_thread+0x5d9/0x1050 [ 51.518155] kthread+0x319/0x430 [ 51.521515] ? process_one_work+0x1600/0x1600 [ 51.526162] ? kthread_create_on_node+0xd0/0xd0 [ 51.530829] ret_from_fork+0x24/0x30 [ 51.536551] Kernel Offset: disabled [ 51.540263] Rebooting in 86400 seconds..