[ 39.079580] audit: type=1400 audit(1581462248.032:39): avc: denied { create } for pid=6750 comm="syz-fuzzer" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 39.245709] random: sshd: uninitialized urandom read (32 bytes read) [ 40.021580] random: sshd: uninitialized urandom read (32 bytes read) [ 40.208106] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.180' (ECDSA) to the list of known hosts. 2020/02/11 23:04:14 parsed 1 programs 2020/02/11 23:04:15 executed programs: 0 [ 46.111511] audit: type=1400 audit(1581462255.112:40): avc: denied { map } for pid=6823 comm="syz-execprog" path="/root/syzkaller-shm570120858" dev="sda1" ino=16490 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 46.460915] IPVS: ftp: loaded support on port[0] = 21 [ 47.245499] IPVS: ftp: loaded support on port[0] = 21 [ 47.289107] chnl_net:caif_netlink_parms(): no params data found [ 47.328924] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.335982] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.343459] device bridge_slave_0 entered promiscuous mode [ 47.344003] IPVS: ftp: loaded support on port[0] = 21 [ 47.351238] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.361006] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.368103] device bridge_slave_1 entered promiscuous mode [ 47.399968] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.432314] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.457053] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.464320] team0: Port device team_slave_0 added [ 47.469333] chnl_net:caif_netlink_parms(): no params data found [ 47.480627] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.487647] team0: Port device team_slave_1 added [ 47.501520] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 47.512941] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 47.551881] IPVS: ftp: loaded support on port[0] = 21 [ 47.572549] device hsr_slave_0 entered promiscuous mode [ 47.610358] device hsr_slave_1 entered promiscuous mode [ 47.684594] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 47.702203] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 47.709009] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.715593] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.722766] device bridge_slave_0 entered promiscuous mode [ 47.756048] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.762587] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.769506] device bridge_slave_1 entered promiscuous mode [ 47.807417] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.816153] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.828074] chnl_net:caif_netlink_parms(): no params data found [ 47.849019] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.857298] team0: Port device team_slave_0 added [ 47.865535] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.872753] team0: Port device team_slave_1 added [ 47.880077] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 47.887514] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 47.905544] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.912048] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.918931] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.925392] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.950332] IPVS: ftp: loaded support on port[0] = 21 [ 48.032007] device hsr_slave_0 entered promiscuous mode [ 48.080387] device hsr_slave_1 entered promiscuous mode [ 48.120747] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 48.129762] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 48.136582] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.143790] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.151054] device bridge_slave_0 entered promiscuous mode [ 48.158341] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.164816] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.172078] device bridge_slave_1 entered promiscuous mode [ 48.210479] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 48.219295] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 48.246022] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.252397] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.259024] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.265469] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.288547] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 48.295707] team0: Port device team_slave_0 added [ 48.301613] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 48.308678] team0: Port device team_slave_1 added [ 48.334547] IPVS: ftp: loaded support on port[0] = 21 [ 48.343582] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.361391] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.369544] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.376546] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.384219] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.391769] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.416272] chnl_net:caif_netlink_parms(): no params data found [ 48.461980] device hsr_slave_0 entered promiscuous mode [ 48.510377] device hsr_slave_1 entered promiscuous mode [ 48.571249] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 48.590861] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.601000] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 48.625834] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 48.647229] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.666915] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.674921] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.694214] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.700673] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.707476] device bridge_slave_0 entered promiscuous mode [ 48.753934] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 48.760101] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.767026] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.773795] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.781520] device bridge_slave_1 entered promiscuous mode [ 48.802747] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 48.814517] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 48.829376] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.836442] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 48.855927] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.864691] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.872483] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.878833] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.887420] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 48.895275] chnl_net:caif_netlink_parms(): no params data found [ 48.911474] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 48.918580] team0: Port device team_slave_0 added [ 48.924627] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 48.931591] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.939280] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.947168] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.953547] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.964369] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 48.971853] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 48.979009] team0: Port device team_slave_1 added [ 48.984660] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 49.003333] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 49.009709] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.033536] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.039964] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.046935] device bridge_slave_0 entered promiscuous mode [ 49.053281] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 49.122005] device hsr_slave_0 entered promiscuous mode [ 49.160342] device hsr_slave_1 entered promiscuous mode [ 49.200653] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 49.207875] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 49.217620] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.224103] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.231589] device bridge_slave_1 entered promiscuous mode [ 49.263218] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 49.270639] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.279976] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 49.307536] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.317248] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 49.326736] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.335049] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.343057] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 49.350247] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.365337] chnl_net:caif_netlink_parms(): no params data found [ 49.387465] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 49.396214] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.404223] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 49.414163] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 49.424054] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 49.444675] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 49.451042] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.457063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.465911] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.475191] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 49.483500] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 49.503109] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 49.510242] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 49.517058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.524131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.531615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.539099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.547152] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.554897] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.561275] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.568883] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 49.582641] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 49.589657] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 49.598243] team0: Port device team_slave_0 added [ 49.605928] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.612349] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.619210] device bridge_slave_0 entered promiscuous mode [ 49.626079] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.633595] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.642783] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 49.648859] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.657475] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 49.664682] team0: Port device team_slave_1 added [ 49.669907] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 49.677762] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 49.691649] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.698008] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.707237] device bridge_slave_1 entered promiscuous mode [ 49.717086] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 49.723566] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.731521] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 49.747707] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 49.764149] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.771871] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.779494] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.785949] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.792979] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.800783] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.808326] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.814725] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.822042] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 49.832047] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 49.892119] device hsr_slave_0 entered promiscuous mode [ 49.930284] device hsr_slave_1 entered promiscuous mode [ 49.977450] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 49.987035] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.994915] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 50.003226] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.010846] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.017186] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.024879] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 50.032474] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 50.039472] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 50.047753] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 50.057833] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 50.068173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 50.076140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 50.086824] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 50.094198] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 50.106185] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 50.117550] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.126064] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 50.133939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 50.142167] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.149668] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 50.159631] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 50.173498] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 50.182959] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 50.192441] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.199422] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.207203] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.214740] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.222463] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.229817] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 50.237750] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.245382] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.259772] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 50.267487] team0: Port device team_slave_0 added [ 50.283991] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 50.296640] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 50.304517] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 50.314464] team0: Port device team_slave_1 added [ 50.322652] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.331443] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 50.339084] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.347008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.355131] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.363238] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.373154] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 50.379177] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.389348] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 50.401846] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 50.418880] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 50.426874] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 50.435708] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 50.447761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.455311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.462849] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.470629] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.477930] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 50.485183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.493052] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 50.521115] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 50.564988] device hsr_slave_0 entered promiscuous mode [ 50.610389] device hsr_slave_1 entered promiscuous mode [ 50.664885] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 50.671134] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.678782] FAULT_INJECTION: forcing a failure. [ 50.678782] name failslab, interval 1, probability 0, space 0, times 1 [ 50.690276] CPU: 0 PID: 6883 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 50.698080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.707424] Call Trace: [ 50.710009] dump_stack+0xf7/0x13b [ 50.713543] should_fail.cold.3+0x105/0x14b [ 50.717855] should_failslab+0xba/0xf0 [ 50.721732] kmem_cache_alloc_node+0x287/0x790 [ 50.726302] __alloc_skb+0x92/0x500 [ 50.729919] ? skb_trim+0x160/0x160 [ 50.733541] ? if_nlmsg_size+0x2d9/0x6f0 [ 50.737590] rtmsg_ifinfo_build_skb+0x68/0x120 [ 50.742163] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 50.746992] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 50.751912] rtnetlink_event+0xc2/0x110 [ 50.755877] notifier_call_chain+0xd6/0x150 [ 50.760187] raw_notifier_call_chain+0x11/0x20 [ 50.764758] call_netdevice_notifiers_info+0x4b/0x60 [ 50.769856] __netdev_upper_dev_link+0x18e/0x1f0 [ 50.774605] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 50.779345] netdev_master_upper_dev_link+0x14/0x20 [ 50.784386] batadv_hardif_enable_interface+0x1af/0x990 [ 50.789739] batadv_softif_slave_add+0x82/0xe0 [ 50.794315] do_set_master+0x163/0x1f0 [ 50.798194] do_setlink+0x9dd/0x2c50 [ 50.801896] ? find_held_lock+0x36/0x1d0 [ 50.805950] ? rtnl_register+0x20/0x20 [ 50.809828] ? load_balance+0xb38/0x2190 [ 50.813883] ? lock_downgrade+0x7f0/0x7f0 [ 50.818025] ? lock_pin_lock+0x340/0x340 [ 50.822074] ? __lock_acquire+0x6a4/0x4500 [ 50.826295] ? trace_hardirqs_off+0x10/0x10 [ 50.830602] ? __lock_is_held+0xb5/0x140 [ 50.834692] ? trace_hardirqs_off+0x10/0x10 [ 50.839007] rtnl_newlink+0xe0c/0x1390 [ 50.842984] ? rtnl_link_unregister+0x270/0x270 [ 50.847641] ? finish_task_switch+0x178/0x650 [ 50.852121] ? finish_task_switch+0x14d/0x650 [ 50.856605] ? find_held_lock+0x36/0x1d0 [ 50.860705] ? __mutex_lock+0x8b7/0x14c0 [ 50.864759] ? lock_downgrade+0x7f0/0x7f0 [ 50.868889] ? do_raw_spin_unlock+0x16a/0x250 [ 50.873463] rtnetlink_rcv_msg+0x34f/0x9d0 [ 50.877706] ? rtnl_bridge_getlink+0x760/0x760 [ 50.882280] ? find_held_lock+0x36/0x1d0 [ 50.886350] netlink_rcv_skb+0x133/0x370 [ 50.890401] ? rtnl_bridge_getlink+0x760/0x760 [ 50.894970] ? netlink_ack+0xa00/0xa00 [ 50.898845] ? netlink_deliver_tap+0x8e/0x920 [ 50.903330] rtnetlink_rcv+0x10/0x20 [ 50.907024] netlink_unicast+0x40d/0x5f0 [ 50.911075] ? netlink_attachskb+0x6e0/0x6e0 [ 50.915483] netlink_sendmsg+0x730/0xbd0 [ 50.919528] ? netlink_unicast+0x5f0/0x5f0 [ 50.923750] ? selinux_socket_sendmsg+0x31/0x40 [ 50.928407] ? security_socket_sendmsg+0x6a/0xa0 [ 50.933146] ? netlink_unicast+0x5f0/0x5f0 [ 50.937368] sock_sendmsg+0xb5/0xf0 [ 50.940983] ___sys_sendmsg+0x625/0x920 [ 50.944951] ? trace_hardirqs_off+0x10/0x10 [ 50.949269] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 50.954013] ? find_held_lock+0x36/0x1d0 [ 50.958073] ? lock_downgrade+0x7f0/0x7f0 [ 50.962215] ? __fget+0x1ca/0x2f0 [ 50.965663] ? __fget_light+0x166/0x200 [ 50.969626] ? __fdget+0xe/0x10 [ 50.972896] ? sockfd_lookup_light+0x1c/0x150 [ 50.977438] __sys_sendmsg+0xc1/0x140 [ 50.981234] ? SyS_shutdown+0x180/0x180 [ 50.985190] ? __sb_end_write+0xa4/0xd0 [ 50.989152] ? mutex_unlock+0xd/0x10 [ 50.992914] ? do_syscall_64+0x4c/0x5b0 [ 50.996883] ? __sys_sendmsg+0x140/0x140 [ 51.000937] SyS_sendmsg+0xd/0x20 [ 51.004383] do_syscall_64+0x1c7/0x5b0 [ 51.008263] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.013093] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 51.018270] RIP: 0033:0x459ef9 [ 51.021446] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.029188] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 51.036447] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 51.043709] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 51.050965] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 51.058224] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 2020/02/11 23:04:20 executed programs: 7 [ 51.068257] batman_adv: batadv0: Adding interface: gretap0 [ 51.074013] 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. [ 51.099066] batman_adv: batadv0: Interface activated: gretap0 [ 51.107520] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 51.120914] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 51.136127] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 51.143008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.151948] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.162915] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.175040] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.188789] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 51.197121] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 51.210851] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.218369] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.224752] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.232837] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 51.242685] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 51.249442] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.271020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.278804] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.295353] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.301738] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.312450] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 51.321075] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 51.328064] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 51.339405] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.349437] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.370826] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 51.378223] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.387456] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 51.396799] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 51.410822] FAULT_INJECTION: forcing a failure. [ 51.410822] name failslab, interval 1, probability 0, space 0, times 0 [ 51.425584] CPU: 1 PID: 6901 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 51.433492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.442838] Call Trace: [ 51.445431] dump_stack+0xf7/0x13b [ 51.448991] should_fail.cold.3+0x105/0x14b [ 51.453313] should_failslab+0xba/0xf0 [ 51.457185] kmem_cache_alloc_node+0x287/0x790 [ 51.461771] __alloc_skb+0x92/0x500 [ 51.465398] ? skb_trim+0x160/0x160 [ 51.469012] ? if_nlmsg_size+0x2d9/0x6f0 [ 51.473076] rtmsg_ifinfo_build_skb+0x68/0x120 [ 51.477652] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 51.482488] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 51.487412] rtnetlink_event+0xc2/0x110 [ 51.491366] notifier_call_chain+0xd6/0x150 [ 51.495690] raw_notifier_call_chain+0x11/0x20 [ 51.500265] call_netdevice_notifiers_info+0x4b/0x60 [ 51.505367] __netdev_upper_dev_link+0x18e/0x1f0 [ 51.510116] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 51.514869] netdev_master_upper_dev_link+0x14/0x20 [ 51.519881] batadv_hardif_enable_interface+0x1af/0x990 [ 51.525237] batadv_softif_slave_add+0x82/0xe0 [ 51.529809] do_set_master+0x163/0x1f0 [ 51.533683] do_setlink+0x9dd/0x2c50 [ 51.537392] ? __lock_acquire+0x6a4/0x4500 [ 51.541626] ? rtnl_register+0x20/0x20 [ 51.545505] ? load_balance+0xb38/0x2190 [ 51.549558] ? trace_hardirqs_on+0x10/0x10 [ 51.553779] ? trace_hardirqs_off+0x10/0x10 [ 51.558089] ? __lock_acquire+0x6a4/0x4500 [ 51.562314] ? trace_hardirqs_off+0x10/0x10 [ 51.566628] ? __lock_is_held+0xb5/0x140 [ 51.570673] ? trace_hardirqs_off+0x10/0x10 [ 51.574979] ? trace_hardirqs_off+0x10/0x10 [ 51.579295] rtnl_newlink+0xe0c/0x1390 [ 51.583184] ? rtnl_link_unregister+0x270/0x270 [ 51.587841] ? finish_task_switch+0x178/0x650 [ 51.592331] ? finish_task_switch+0x14d/0x650 [ 51.596809] ? find_held_lock+0x36/0x1d0 [ 51.600866] ? __mutex_lock+0x8b7/0x14c0 [ 51.604918] ? lock_downgrade+0x7f0/0x7f0 [ 51.609056] ? do_raw_spin_unlock+0x16a/0x250 [ 51.613547] rtnetlink_rcv_msg+0x34f/0x9d0 [ 51.617774] ? rtnl_bridge_getlink+0x760/0x760 [ 51.622355] ? find_held_lock+0x36/0x1d0 [ 51.626417] netlink_rcv_skb+0x133/0x370 [ 51.630471] ? rtnl_bridge_getlink+0x760/0x760 [ 51.635157] ? netlink_ack+0xa00/0xa00 [ 51.639037] ? netlink_deliver_tap+0x8e/0x920 [ 51.643528] rtnetlink_rcv+0x10/0x20 [ 51.647235] netlink_unicast+0x40d/0x5f0 [ 51.651286] ? netlink_attachskb+0x6e0/0x6e0 [ 51.655686] netlink_sendmsg+0x730/0xbd0 [ 51.659727] ? netlink_unicast+0x5f0/0x5f0 [ 51.663952] ? selinux_socket_sendmsg+0x31/0x40 [ 51.668612] ? security_socket_sendmsg+0x6a/0xa0 [ 51.673357] ? netlink_unicast+0x5f0/0x5f0 [ 51.677585] sock_sendmsg+0xb5/0xf0 [ 51.681202] ___sys_sendmsg+0x625/0x920 [ 51.685176] ? trace_hardirqs_off+0x10/0x10 [ 51.689584] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 51.694333] ? find_held_lock+0x36/0x1d0 [ 51.698387] ? lock_downgrade+0x7f0/0x7f0 [ 51.702536] ? __fget+0x1ca/0x2f0 [ 51.706000] ? __fget_light+0x166/0x200 [ 51.709957] ? __fdget+0xe/0x10 [ 51.713236] ? sockfd_lookup_light+0x1c/0x150 [ 51.717725] __sys_sendmsg+0xc1/0x140 [ 51.721571] ? SyS_shutdown+0x180/0x180 [ 51.725544] ? __sb_end_write+0xa4/0xd0 [ 51.729513] ? mutex_unlock+0xd/0x10 [ 51.733217] ? do_syscall_64+0x4c/0x5b0 [ 51.737180] ? __sys_sendmsg+0x140/0x140 [ 51.741233] SyS_sendmsg+0xd/0x20 [ 51.744677] do_syscall_64+0x1c7/0x5b0 [ 51.748547] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.753400] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 51.758613] RIP: 0033:0x459ef9 [ 51.761795] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.769512] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 51.776778] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 51.784037] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 51.791294] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 51.798610] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 51.811006] batman_adv: batadv0: Adding interface: ip6gretap0 [ 51.817044] 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. [ 51.842240] batman_adv: batadv0: Interface activated: ip6gretap0 [ 51.849500] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.858326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.878705] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.888987] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.898485] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 51.905103] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.928263] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 51.955584] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.963103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.971146] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.978692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 51.987189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.994827] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.001324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.008773] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 52.018831] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 52.027556] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.035400] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.048726] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 52.060877] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.072454] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 52.078619] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.087361] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.096313] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.102913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.112609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.121448] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 52.134668] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 52.151118] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.158922] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 52.165360] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.174463] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.182508] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.190379] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.196749] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.203640] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.210820] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.220259] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 52.229212] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 52.236958] FAULT_INJECTION: forcing a failure. [ 52.236958] name failslab, interval 1, probability 0, space 0, times 0 [ 52.248386] CPU: 0 PID: 6921 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 52.256181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.265524] Call Trace: [ 52.268107] dump_stack+0xf7/0x13b [ 52.271634] should_fail.cold.3+0x105/0x14b [ 52.275946] should_failslab+0xba/0xf0 [ 52.279824] kmem_cache_alloc_node+0x287/0x790 [ 52.284402] __alloc_skb+0x92/0x500 [ 52.288018] ? skb_trim+0x160/0x160 [ 52.291634] ? if_nlmsg_size+0x2d9/0x6f0 [ 52.295680] rtmsg_ifinfo_build_skb+0x68/0x120 [ 52.300262] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 52.305085] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 52.310003] rtnetlink_event+0xc2/0x110 [ 52.313974] notifier_call_chain+0xd6/0x150 [ 52.318283] raw_notifier_call_chain+0x11/0x20 [ 52.322855] call_netdevice_notifiers_info+0x4b/0x60 [ 52.327941] __netdev_upper_dev_link+0x18e/0x1f0 [ 52.332728] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 52.337475] netdev_master_upper_dev_link+0x14/0x20 [ 52.342487] batadv_hardif_enable_interface+0x1af/0x990 [ 52.347841] batadv_softif_slave_add+0x82/0xe0 [ 52.352410] do_set_master+0x163/0x1f0 [ 52.356292] do_setlink+0x9dd/0x2c50 [ 52.360011] ? __lock_acquire+0x6a4/0x4500 [ 52.364245] ? rtnl_register+0x20/0x20 [ 52.368112] ? load_balance+0xb38/0x2190 [ 52.372163] ? trace_hardirqs_on+0x10/0x10 [ 52.376380] ? trace_hardirqs_off+0x10/0x10 [ 52.380689] ? __lock_acquire+0x6a4/0x4500 [ 52.384912] ? trace_hardirqs_off+0x10/0x10 [ 52.389226] ? __lock_is_held+0xb5/0x140 [ 52.393317] ? trace_hardirqs_off+0x10/0x10 [ 52.397688] ? trace_hardirqs_off+0x10/0x10 [ 52.402053] rtnl_newlink+0xe0c/0x1390 [ 52.405930] ? rtnl_link_unregister+0x270/0x270 [ 52.410584] ? finish_task_switch+0x178/0x650 [ 52.415064] ? finish_task_switch+0x14d/0x650 [ 52.419545] ? find_held_lock+0x36/0x1d0 [ 52.423600] ? __mutex_lock+0x8b7/0x14c0 [ 52.427649] ? lock_downgrade+0x7f0/0x7f0 [ 52.431783] ? do_raw_spin_unlock+0x16a/0x250 [ 52.436271] rtnetlink_rcv_msg+0x34f/0x9d0 [ 52.440493] ? rtnl_bridge_getlink+0x760/0x760 [ 52.445063] ? find_held_lock+0x36/0x1d0 [ 52.449117] netlink_rcv_skb+0x133/0x370 [ 52.453172] ? rtnl_bridge_getlink+0x760/0x760 [ 52.457750] ? netlink_ack+0xa00/0xa00 [ 52.461630] ? netlink_deliver_tap+0x8e/0x920 [ 52.466110] rtnetlink_rcv+0x10/0x20 [ 52.469812] netlink_unicast+0x40d/0x5f0 [ 52.473863] ? netlink_attachskb+0x6e0/0x6e0 [ 52.478267] netlink_sendmsg+0x730/0xbd0 [ 52.482306] ? netlink_unicast+0x5f0/0x5f0 [ 52.486519] ? selinux_socket_sendmsg+0x31/0x40 [ 52.491164] ? security_socket_sendmsg+0x6a/0xa0 [ 52.495900] ? netlink_unicast+0x5f0/0x5f0 [ 52.500117] sock_sendmsg+0xb5/0xf0 [ 52.503722] ___sys_sendmsg+0x625/0x920 [ 52.507689] ? trace_hardirqs_off+0x10/0x10 [ 52.511988] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 52.516721] ? find_held_lock+0x36/0x1d0 [ 52.520776] ? lock_downgrade+0x7f0/0x7f0 [ 52.524928] ? __fget+0x1ca/0x2f0 [ 52.528365] ? __fget_light+0x166/0x200 [ 52.532319] ? __fdget+0xe/0x10 [ 52.535576] ? sockfd_lookup_light+0x1c/0x150 [ 52.540052] __sys_sendmsg+0xc1/0x140 [ 52.543831] ? SyS_shutdown+0x180/0x180 [ 52.547782] ? __sb_end_write+0xa4/0xd0 [ 52.551736] ? mutex_unlock+0xd/0x10 [ 52.555432] ? do_syscall_64+0x4c/0x5b0 [ 52.559384] ? __sys_sendmsg+0x140/0x140 [ 52.563419] SyS_sendmsg+0xd/0x20 [ 52.566851] do_syscall_64+0x1c7/0x5b0 [ 52.570716] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.575537] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 52.580705] RIP: 0033:0x459ef9 [ 52.583884] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.591568] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 52.598820] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 52.606065] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 52.613365] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 52.620618] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 52.630653] batman_adv: batadv0: Adding interface: gretap0 [ 52.636294] 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. [ 52.661164] batman_adv: batadv0: Interface activated: gretap0 [ 52.670266] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 52.694442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.703871] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.713038] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.721189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.728634] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.734992] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.741843] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 52.751787] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.759097] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 52.767917] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 52.775916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.783469] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.791554] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.799147] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.806969] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.813346] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.820318] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.828708] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 52.838007] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 52.846066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.854070] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.861882] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.871816] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 52.879961] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 52.891978] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 52.901594] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 52.908625] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.917155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.926300] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.934175] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.941655] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.949360] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.957187] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.966152] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 52.972367] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.979887] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.991801] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 53.003732] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 53.011750] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.019257] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.029997] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 53.042794] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.053958] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.068101] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 53.076885] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.088255] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 53.097828] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.105264] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.113034] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.122439] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.136229] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 53.147107] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.207846] FAULT_INJECTION: forcing a failure. [ 54.207846] name failslab, interval 1, probability 0, space 0, times 0 [ 54.219322] CPU: 0 PID: 6955 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 54.227119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.236458] Call Trace: [ 54.239031] dump_stack+0xf7/0x13b [ 54.242559] should_fail.cold.3+0x105/0x14b [ 54.246866] should_failslab+0xba/0xf0 [ 54.250740] kmem_cache_alloc_node+0x287/0x790 [ 54.255478] __alloc_skb+0x92/0x500 [ 54.259091] ? skb_trim+0x160/0x160 [ 54.262706] ? if_nlmsg_size+0x2d9/0x6f0 [ 54.266757] rtmsg_ifinfo_build_skb+0x68/0x120 [ 54.271338] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 54.276170] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 54.281081] rtnetlink_event+0xc2/0x110 [ 54.285039] notifier_call_chain+0xd6/0x150 [ 54.289345] raw_notifier_call_chain+0x11/0x20 [ 54.293910] call_netdevice_notifiers_info+0x4b/0x60 [ 54.298992] __netdev_upper_dev_link+0x18e/0x1f0 [ 54.303797] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 54.308544] netdev_master_upper_dev_link+0x14/0x20 [ 54.313541] batadv_hardif_enable_interface+0x1af/0x990 [ 54.318888] batadv_softif_slave_add+0x82/0xe0 [ 54.324844] do_set_master+0x163/0x1f0 [ 54.328710] do_setlink+0x9dd/0x2c50 [ 54.332452] ? trace_hardirqs_on+0x10/0x10 [ 54.336662] ? find_held_lock+0x36/0x1d0 [ 54.340705] ? trace_hardirqs_off+0x10/0x10 [ 54.345015] ? rtnl_register+0x20/0x20 [ 54.348879] ? find_held_lock+0x36/0x1d0 [ 54.352933] ? is_bpf_text_address+0x60/0xe0 [ 54.357328] ? lock_downgrade+0x7f0/0x7f0 [ 54.361464] ? __lock_acquire+0x6a4/0x4500 [ 54.365677] ? __lock_acquire+0x6a4/0x4500 [ 54.369888] ? __kernel_text_address+0xd/0x40 [ 54.374374] ? unwind_get_return_address+0x61/0xa0 [ 54.379291] ? __save_stack_trace+0x7e/0xd0 [ 54.383607] rtnl_newlink+0xe0c/0x1390 [ 54.387476] ? save_stack_trace+0x16/0x20 [ 54.391607] ? save_stack+0x43/0xd0 [ 54.395228] ? rtnl_link_unregister+0x270/0x270 [ 54.399879] ? avc_has_perm_noaudit+0x236/0x400 [ 54.404541] ? lock_downgrade+0x7f0/0x7f0 [ 54.408682] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 54.413081] ? lock_acquire+0x173/0x400 [ 54.417038] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 54.421426] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 54.425830] rtnetlink_rcv_msg+0x34f/0x9d0 [ 54.430054] ? rtnl_bridge_getlink+0x760/0x760 [ 54.434621] ? find_held_lock+0x36/0x1d0 [ 54.438677] netlink_rcv_skb+0x133/0x370 [ 54.442726] ? rtnl_bridge_getlink+0x760/0x760 [ 54.447292] ? netlink_ack+0xa00/0xa00 [ 54.451177] ? netlink_deliver_tap+0x8e/0x920 [ 54.455652] rtnetlink_rcv+0x10/0x20 [ 54.459350] netlink_unicast+0x40d/0x5f0 [ 54.463430] ? netlink_attachskb+0x6e0/0x6e0 [ 54.467818] netlink_sendmsg+0x730/0xbd0 [ 54.471864] ? netlink_unicast+0x5f0/0x5f0 [ 54.476081] ? selinux_socket_sendmsg+0x31/0x40 [ 54.480728] ? security_socket_sendmsg+0x6a/0xa0 [ 54.485463] ? netlink_unicast+0x5f0/0x5f0 [ 54.489676] sock_sendmsg+0xb5/0xf0 [ 54.493284] ___sys_sendmsg+0x625/0x920 [ 54.497241] ? trace_hardirqs_off+0x10/0x10 [ 54.501540] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 54.506276] ? find_held_lock+0x36/0x1d0 [ 54.510330] ? lock_downgrade+0x7f0/0x7f0 [ 54.514467] ? __fget+0x1ca/0x2f0 [ 54.517900] ? __fget_light+0x166/0x200 [ 54.521852] ? __fdget+0xe/0x10 [ 54.525110] ? sockfd_lookup_light+0x1c/0x150 [ 54.529585] __sys_sendmsg+0xc1/0x140 [ 54.533367] ? SyS_shutdown+0x180/0x180 [ 54.537321] ? __sb_end_write+0xa4/0xd0 [ 54.541283] ? mutex_unlock+0xd/0x10 [ 54.544986] ? do_syscall_64+0x4c/0x5b0 [ 54.548949] ? __sys_sendmsg+0x140/0x140 [ 54.552997] SyS_sendmsg+0xd/0x20 [ 54.556429] do_syscall_64+0x1c7/0x5b0 [ 54.560294] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.565115] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 54.570280] RIP: 0033:0x459ef9 [ 54.573451] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 54.581145] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 54.588530] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 54.595784] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 54.603052] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 54.610351] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 54.627405] batman_adv: batadv0: Adding interface: gretap0 [ 54.635233] 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. [ 54.660065] batman_adv: batadv0: Interface activated: gretap0 [ 54.667656] FAULT_INJECTION: forcing a failure. [ 54.667656] name failslab, interval 1, probability 0, space 0, times 0 [ 54.680771] CPU: 0 PID: 6953 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 54.688571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.697906] Call Trace: [ 54.700485] dump_stack+0xf7/0x13b [ 54.704013] should_fail.cold.3+0x105/0x14b [ 54.708311] should_failslab+0xba/0xf0 [ 54.712184] kmem_cache_alloc_node+0x287/0x790 [ 54.716763] __alloc_skb+0x92/0x500 [ 54.720376] ? skb_trim+0x160/0x160 [ 54.723991] ? if_nlmsg_size+0x2d9/0x6f0 [ 54.728040] rtmsg_ifinfo_build_skb+0x68/0x120 [ 54.732599] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 54.737418] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 54.742328] rtnetlink_event+0xc2/0x110 [ 54.746286] notifier_call_chain+0xd6/0x150 [ 54.750584] raw_notifier_call_chain+0x11/0x20 [ 54.755147] call_netdevice_notifiers_info+0x4b/0x60 [ 54.760241] __netdev_upper_dev_link+0x18e/0x1f0 [ 54.764986] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 54.769742] netdev_master_upper_dev_link+0x14/0x20 [ 54.774756] batadv_hardif_enable_interface+0x1af/0x990 [ 54.780111] batadv_softif_slave_add+0x82/0xe0 [ 54.784684] do_set_master+0x163/0x1f0 [ 54.788557] do_setlink+0x9dd/0x2c50 [ 54.792258] ? find_held_lock+0x36/0x1d0 [ 54.796326] ? rtnl_register+0x20/0x20 [ 54.800203] ? load_balance+0xb38/0x2190 [ 54.804253] ? lock_downgrade+0x7f0/0x7f0 [ 54.808383] ? lock_pin_lock+0x340/0x340 [ 54.812432] ? __lock_acquire+0x6a4/0x4500 [ 54.816652] ? trace_hardirqs_off+0x10/0x10 [ 54.820960] ? __lock_is_held+0xb5/0x140 [ 54.825011] ? trace_hardirqs_off+0x10/0x10 [ 54.829316] rtnl_newlink+0xe0c/0x1390 [ 54.833185] ? rtnl_link_unregister+0x270/0x270 [ 54.837833] ? finish_task_switch+0x178/0x650 [ 54.842307] ? finish_task_switch+0x14d/0x650 [ 54.846790] ? find_held_lock+0x36/0x1d0 [ 54.850834] ? __mutex_lock+0x8b7/0x14c0 [ 54.854874] ? lock_downgrade+0x7f0/0x7f0 [ 54.858999] ? do_raw_spin_unlock+0x16a/0x250 [ 54.863504] rtnetlink_rcv_msg+0x34f/0x9d0 [ 54.867726] ? rtnl_bridge_getlink+0x760/0x760 [ 54.872292] ? find_held_lock+0x36/0x1d0 [ 54.876335] netlink_rcv_skb+0x133/0x370 [ 54.880378] ? rtnl_bridge_getlink+0x760/0x760 [ 54.884942] ? netlink_ack+0xa00/0xa00 [ 54.888810] ? netlink_deliver_tap+0x8e/0x920 [ 54.893292] rtnetlink_rcv+0x10/0x20 [ 54.896982] netlink_unicast+0x40d/0x5f0 [ 54.901027] ? netlink_attachskb+0x6e0/0x6e0 [ 54.905422] netlink_sendmsg+0x730/0xbd0 [ 54.909466] ? netlink_unicast+0x5f0/0x5f0 [ 54.913681] ? selinux_socket_sendmsg+0x31/0x40 [ 54.918325] ? security_socket_sendmsg+0x6a/0xa0 [ 54.923063] ? netlink_unicast+0x5f0/0x5f0 [ 54.927283] sock_sendmsg+0xb5/0xf0 [ 54.930890] ___sys_sendmsg+0x625/0x920 [ 54.934843] ? trace_hardirqs_off+0x10/0x10 [ 54.939154] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 54.943889] ? find_held_lock+0x36/0x1d0 [ 54.947930] ? lock_downgrade+0x7f0/0x7f0 [ 54.952059] ? __fget+0x1ca/0x2f0 [ 54.955492] ? __fget_light+0x166/0x200 [ 54.959444] ? __fdget+0xe/0x10 [ 54.962708] ? sockfd_lookup_light+0x1c/0x150 [ 54.967188] __sys_sendmsg+0xc1/0x140 [ 54.970968] ? SyS_shutdown+0x180/0x180 [ 54.974921] ? __sb_end_write+0xa4/0xd0 [ 54.978875] ? mutex_unlock+0xd/0x10 [ 54.982589] ? do_syscall_64+0x4c/0x5b0 [ 54.986546] ? __sys_sendmsg+0x140/0x140 [ 54.990586] SyS_sendmsg+0xd/0x20 [ 54.994019] do_syscall_64+0x1c7/0x5b0 [ 54.997882] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.002833] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 55.008007] RIP: 0033:0x459ef9 [ 55.011174] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.018873] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 55.026122] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 55.033893] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 55.041149] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 55.048409] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 55.071368] batman_adv: batadv0: Adding interface: team0 [ 55.082545] 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. [ 55.107519] batman_adv: batadv0: Interface activated: team0 [ 55.114661] FAULT_INJECTION: forcing a failure. [ 55.114661] name failslab, interval 1, probability 0, space 0, times 0 [ 55.127108] CPU: 1 PID: 6956 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 55.134921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.144268] Call Trace: [ 55.146852] dump_stack+0xf7/0x13b [ 55.150393] should_fail.cold.3+0x105/0x14b [ 55.154700] should_failslab+0xba/0xf0 [ 55.158569] kmem_cache_alloc_node+0x287/0x790 [ 55.163143] __alloc_skb+0x92/0x500 [ 55.166756] ? skb_trim+0x160/0x160 [ 55.170361] ? if_nlmsg_size+0x2d9/0x6f0 [ 55.174404] rtmsg_ifinfo_build_skb+0x68/0x120 [ 55.178965] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 55.183783] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 55.188690] rtnetlink_event+0xc2/0x110 [ 55.192642] notifier_call_chain+0xd6/0x150 [ 55.196942] raw_notifier_call_chain+0x11/0x20 [ 55.201501] call_netdevice_notifiers_info+0x4b/0x60 [ 55.206584] __netdev_upper_dev_link+0x18e/0x1f0 [ 55.211318] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 55.216054] netdev_master_upper_dev_link+0x14/0x20 [ 55.221049] batadv_hardif_enable_interface+0x1af/0x990 [ 55.226391] batadv_softif_slave_add+0x82/0xe0 [ 55.230949] do_set_master+0x163/0x1f0 [ 55.234816] do_setlink+0x9dd/0x2c50 [ 55.238506] ? __lock_acquire+0x6a4/0x4500 [ 55.242730] ? trace_hardirqs_off+0x10/0x10 [ 55.247036] ? rtnl_register+0x20/0x20 [ 55.250910] ? trace_hardirqs_on+0x10/0x10 [ 55.255139] ? trace_hardirqs_off+0x10/0x10 [ 55.259459] ? __lock_acquire+0x6a4/0x4500 [ 55.263677] ? trace_hardirqs_off+0x10/0x10 [ 55.267999] ? trace_hardirqs_off+0x10/0x10 [ 55.272305] ? __lock_is_held+0xb5/0x140 [ 55.276354] ? trace_hardirqs_off+0x10/0x10 [ 55.280663] rtnl_newlink+0xe0c/0x1390 [ 55.284537] ? rtnl_link_unregister+0x270/0x270 [ 55.289189] ? finish_task_switch+0x178/0x650 [ 55.293660] ? finish_task_switch+0x14d/0x650 [ 55.298134] ? find_held_lock+0x36/0x1d0 [ 55.302177] ? __mutex_lock+0x8b7/0x14c0 [ 55.306216] ? lock_downgrade+0x7f0/0x7f0 [ 55.310344] ? do_raw_spin_unlock+0x16a/0x250 [ 55.314875] rtnetlink_rcv_msg+0x34f/0x9d0 [ 55.319092] ? rtnl_bridge_getlink+0x760/0x760 [ 55.323655] ? find_held_lock+0x36/0x1d0 [ 55.327697] netlink_rcv_skb+0x133/0x370 [ 55.331742] ? rtnl_bridge_getlink+0x760/0x760 [ 55.336306] ? netlink_ack+0xa00/0xa00 [ 55.340170] ? netlink_deliver_tap+0x8e/0x920 [ 55.344644] rtnetlink_rcv+0x10/0x20 [ 55.348340] netlink_unicast+0x40d/0x5f0 [ 55.352387] ? netlink_attachskb+0x6e0/0x6e0 [ 55.356802] netlink_sendmsg+0x730/0xbd0 [ 55.360849] ? netlink_unicast+0x5f0/0x5f0 [ 55.365060] ? selinux_socket_sendmsg+0x31/0x40 [ 55.369711] ? security_socket_sendmsg+0x6a/0xa0 [ 55.374443] ? netlink_unicast+0x5f0/0x5f0 [ 55.378656] sock_sendmsg+0xb5/0xf0 [ 55.382264] ___sys_sendmsg+0x625/0x920 [ 55.386311] ? trace_hardirqs_off+0x10/0x10 [ 55.390629] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 55.395381] ? find_held_lock+0x36/0x1d0 [ 55.399424] ? lock_downgrade+0x7f0/0x7f0 [ 55.403553] ? __fget+0x1ca/0x2f0 [ 55.406983] ? __fget_light+0x166/0x200 [ 55.410934] ? __fdget+0xe/0x10 [ 55.414195] ? sockfd_lookup_light+0x1c/0x150 [ 55.418693] __sys_sendmsg+0xc1/0x140 [ 55.422475] ? SyS_shutdown+0x180/0x180 [ 55.426429] ? __sb_end_write+0xa4/0xd0 [ 55.430978] ? mutex_unlock+0xd/0x10 [ 55.434703] ? do_syscall_64+0x4c/0x5b0 [ 55.438717] ? __sys_sendmsg+0x140/0x140 [ 55.442772] SyS_sendmsg+0xd/0x20 [ 55.446212] do_syscall_64+0x1c7/0x5b0 [ 55.450080] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.454907] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 55.460077] RIP: 0033:0x459ef9 [ 55.463247] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.470932] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 55.478185] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 55.485431] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 55.492690] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 55.499938] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 55.508678] batman_adv: batadv0: Adding interface: gretap0 [ 55.514527] 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. [ 55.539675] batman_adv: batadv0: Interface activated: gretap0 [ 55.584705] FAULT_INJECTION: forcing a failure. [ 55.584705] name failslab, interval 1, probability 0, space 0, times 0 [ 55.625684] CPU: 0 PID: 6973 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 55.633513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.642948] Call Trace: [ 55.645523] dump_stack+0xf7/0x13b [ 55.649044] should_fail.cold.3+0x105/0x14b [ 55.653353] should_failslab+0xba/0xf0 [ 55.657232] kmem_cache_alloc+0x2cf/0x790 [ 55.661372] ? memcpy+0x45/0x50 [ 55.664697] ? kstrdup+0x42/0x60 [ 55.668051] __kernfs_new_node+0x63/0x470 [ 55.672194] ? lock_downgrade+0x7f0/0x7f0 [ 55.676355] kernfs_new_node+0x5e/0xe0 [ 55.680229] kernfs_create_link+0x25/0x130 [ 55.684451] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 55.689686] sysfs_create_link+0x43/0xb0 [ 55.693749] netdev_adjacent_sysfs_add+0x94/0xb0 [ 55.698492] ? napi_disable+0x80/0x80 [ 55.702276] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 55.707447] __netdev_upper_dev_link+0x174/0x1f0 [ 55.712196] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 55.716941] netdev_master_upper_dev_link+0x14/0x20 [ 55.721933] batadv_hardif_enable_interface+0x1af/0x990 [ 55.727288] batadv_softif_slave_add+0x82/0xe0 [ 55.731867] do_set_master+0x163/0x1f0 [ 55.735739] do_setlink+0x9dd/0x2c50 [ 55.739433] ? trace_hardirqs_on+0x10/0x10 [ 55.743652] ? find_held_lock+0x36/0x1d0 [ 55.747699] ? trace_hardirqs_off+0x10/0x10 [ 55.752012] ? rtnl_register+0x20/0x20 [ 55.755893] ? find_held_lock+0x36/0x1d0 [ 55.759941] ? is_bpf_text_address+0x60/0xe0 [ 55.764371] ? lock_downgrade+0x7f0/0x7f0 [ 55.768513] ? __lock_acquire+0x6a4/0x4500 [ 55.772735] ? __lock_acquire+0x6a4/0x4500 [ 55.776955] ? __kernel_text_address+0xd/0x40 [ 55.781430] ? unwind_get_return_address+0x61/0xa0 [ 55.786343] ? __save_stack_trace+0x7e/0xd0 [ 55.790662] rtnl_newlink+0xe0c/0x1390 [ 55.794556] ? save_stack_trace+0x16/0x20 [ 55.798687] ? save_stack+0x43/0xd0 [ 55.802304] ? rtnl_link_unregister+0x270/0x270 [ 55.806948] ? avc_has_perm_noaudit+0x236/0x400 [ 55.811604] ? lock_downgrade+0x7f0/0x7f0 [ 55.815745] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 55.820142] ? lock_acquire+0x173/0x400 [ 55.824103] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 55.828602] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 55.833034] rtnetlink_rcv_msg+0x34f/0x9d0 [ 55.837270] ? rtnl_bridge_getlink+0x760/0x760 [ 55.841847] ? find_held_lock+0x36/0x1d0 [ 55.845900] netlink_rcv_skb+0x133/0x370 [ 55.849951] ? rtnl_bridge_getlink+0x760/0x760 [ 55.854515] ? netlink_ack+0xa00/0xa00 [ 55.858381] ? netlink_deliver_tap+0x8e/0x920 [ 55.862915] rtnetlink_rcv+0x10/0x20 [ 55.866606] netlink_unicast+0x40d/0x5f0 [ 55.870653] ? netlink_attachskb+0x6e0/0x6e0 [ 55.875052] netlink_sendmsg+0x730/0xbd0 [ 55.879102] ? netlink_unicast+0x5f0/0x5f0 [ 55.883357] ? selinux_socket_sendmsg+0x31/0x40 [ 55.888005] ? security_socket_sendmsg+0x6a/0xa0 [ 55.892744] ? netlink_unicast+0x5f0/0x5f0 [ 55.896962] sock_sendmsg+0xb5/0xf0 [ 55.900565] ___sys_sendmsg+0x625/0x920 [ 55.904567] ? trace_hardirqs_off+0x10/0x10 [ 55.908866] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 55.913608] ? find_held_lock+0x36/0x1d0 [ 55.917658] ? lock_downgrade+0x7f0/0x7f0 [ 55.921794] ? __fget+0x1ca/0x2f0 [ 55.925229] ? __fget_light+0x166/0x200 [ 55.929188] ? __fdget+0xe/0x10 [ 55.932457] ? sockfd_lookup_light+0x1c/0x150 [ 55.936949] __sys_sendmsg+0xc1/0x140 [ 55.940739] ? SyS_shutdown+0x180/0x180 [ 55.944699] ? __sb_end_write+0xa4/0xd0 [ 55.948668] ? mutex_unlock+0xd/0x10 [ 55.952388] ? do_syscall_64+0x4c/0x5b0 [ 55.956353] ? __sys_sendmsg+0x140/0x140 [ 55.960399] SyS_sendmsg+0xd/0x20 [ 55.963841] do_syscall_64+0x1c7/0x5b0 [ 55.967709] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.972546] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 55.977727] RIP: 0033:0x459ef9 [ 55.980896] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.988587] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 55.995842] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 56.003115] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 56.010380] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 56.017649] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 56.027400] FAULT_INJECTION: forcing a failure. [ 56.027400] name failslab, interval 1, probability 0, space 0, times 0 [ 56.044445] CPU: 0 PID: 6976 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 56.052260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.061620] Call Trace: [ 56.064214] dump_stack+0xf7/0x13b [ 56.067760] should_fail.cold.3+0x105/0x14b [ 56.072086] should_failslab+0xba/0xf0 [ 56.075976] kmem_cache_alloc_node+0x287/0x790 [ 56.080571] __alloc_skb+0x92/0x500 [ 56.084195] ? skb_trim+0x160/0x160 [ 56.087819] ? if_nlmsg_size+0x2d9/0x6f0 [ 56.091874] rtmsg_ifinfo_build_skb+0x68/0x120 [ 56.096444] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 56.101281] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 56.106212] rtnetlink_event+0xc2/0x110 [ 56.110187] notifier_call_chain+0xd6/0x150 [ 56.114505] raw_notifier_call_chain+0x11/0x20 [ 56.119073] call_netdevice_notifiers_info+0x4b/0x60 [ 56.124162] __netdev_upper_dev_link+0x18e/0x1f0 [ 56.128897] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 56.133638] netdev_master_upper_dev_link+0x14/0x20 [ 56.138634] batadv_hardif_enable_interface+0x1af/0x990 [ 56.143980] batadv_softif_slave_add+0x82/0xe0 [ 56.148596] do_set_master+0x163/0x1f0 [ 56.152474] do_setlink+0x9dd/0x2c50 [ 56.156178] ? __lock_acquire+0x6a4/0x4500 [ 56.160393] ? trace_hardirqs_off+0x10/0x10 [ 56.164700] ? rtnl_register+0x20/0x20 [ 56.168572] ? trace_hardirqs_on+0x10/0x10 [ 56.172794] ? trace_hardirqs_off+0x10/0x10 [ 56.177097] ? __lock_acquire+0x6a4/0x4500 [ 56.181312] ? trace_hardirqs_off+0x10/0x10 [ 56.185619] ? trace_hardirqs_off+0x10/0x10 [ 56.189930] ? __lock_is_held+0xb5/0x140 [ 56.193984] ? trace_hardirqs_off+0x10/0x10 [ 56.198301] rtnl_newlink+0xe0c/0x1390 [ 56.202191] ? rtnl_link_unregister+0x270/0x270 [ 56.206847] ? finish_task_switch+0x178/0x650 [ 56.211337] ? finish_task_switch+0x14d/0x650 [ 56.215827] ? find_held_lock+0x36/0x1d0 [ 56.219883] ? __mutex_lock+0x8b7/0x14c0 [ 56.223928] ? lock_downgrade+0x7f0/0x7f0 [ 56.228057] ? do_raw_spin_unlock+0x16a/0x250 [ 56.232576] rtnetlink_rcv_msg+0x34f/0x9d0 [ 56.236845] ? rtnl_bridge_getlink+0x760/0x760 [ 56.241418] ? find_held_lock+0x36/0x1d0 [ 56.245470] netlink_rcv_skb+0x133/0x370 [ 56.249514] ? rtnl_bridge_getlink+0x760/0x760 [ 56.254093] ? netlink_ack+0xa00/0xa00 [ 56.257967] ? netlink_deliver_tap+0x8e/0x920 [ 56.262453] rtnetlink_rcv+0x10/0x20 [ 56.266159] netlink_unicast+0x40d/0x5f0 [ 56.270220] ? netlink_attachskb+0x6e0/0x6e0 [ 56.274621] netlink_sendmsg+0x730/0xbd0 [ 56.278662] ? netlink_unicast+0x5f0/0x5f0 [ 56.282882] ? selinux_socket_sendmsg+0x31/0x40 [ 56.287541] ? security_socket_sendmsg+0x6a/0xa0 [ 56.292282] ? netlink_unicast+0x5f0/0x5f0 [ 56.296497] sock_sendmsg+0xb5/0xf0 [ 56.300113] ___sys_sendmsg+0x625/0x920 [ 56.304079] ? trace_hardirqs_off+0x10/0x10 [ 56.308388] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 56.313133] ? find_held_lock+0x36/0x1d0 [ 56.317187] ? lock_downgrade+0x7f0/0x7f0 [ 56.321339] ? __fget+0x1ca/0x2f0 [ 56.324786] ? __fget_light+0x166/0x200 [ 56.328747] ? __fdget+0xe/0x10 [ 56.332018] ? sockfd_lookup_light+0x1c/0x150 [ 56.336498] __sys_sendmsg+0xc1/0x140 [ 56.340282] ? SyS_shutdown+0x180/0x180 [ 56.344244] ? __sb_end_write+0xa4/0xd0 [ 56.348205] ? mutex_unlock+0xd/0x10 [ 56.351914] ? do_syscall_64+0x4c/0x5b0 [ 56.355873] ? __sys_sendmsg+0x140/0x140 [ 56.359924] SyS_sendmsg+0xd/0x20 [ 56.363361] do_syscall_64+0x1c7/0x5b0 [ 56.367228] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.372082] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 56.377255] RIP: 0033:0x459ef9 [ 56.380430] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.388135] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 56.395507] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 56.402852] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 56.410120] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 56.417412] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 2020/02/11 23:04:25 executed programs: 27 [ 56.427431] batman_adv: batadv0: Adding interface: gretap0 [ 56.433157] 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. [ 56.457843] batman_adv: batadv0: Interface activated: gretap0 [ 56.544401] FAULT_INJECTION: forcing a failure. [ 56.544401] name failslab, interval 1, probability 0, space 0, times 0 [ 56.572773] CPU: 0 PID: 7011 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 56.580605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.589968] Call Trace: [ 56.592565] dump_stack+0xf7/0x13b [ 56.596116] should_fail.cold.3+0x105/0x14b [ 56.600446] should_failslab+0xba/0xf0 [ 56.604338] kmem_cache_alloc_node+0x287/0x790 [ 56.608930] __alloc_skb+0x92/0x500 [ 56.612560] ? skb_trim+0x160/0x160 [ 56.616201] ? if_nlmsg_size+0x2d9/0x6f0 [ 56.620270] rtmsg_ifinfo_build_skb+0x68/0x120 [ 56.624866] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 56.629709] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 56.634639] rtnetlink_event+0xc2/0x110 [ 56.638614] notifier_call_chain+0xd6/0x150 [ 56.642947] raw_notifier_call_chain+0x11/0x20 [ 56.647531] call_netdevice_notifiers_info+0x4b/0x60 [ 56.652639] __netdev_upper_dev_link+0x18e/0x1f0 [ 56.657395] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 56.662157] netdev_master_upper_dev_link+0x14/0x20 [ 56.667175] batadv_hardif_enable_interface+0x1af/0x990 [ 56.672540] batadv_softif_slave_add+0x82/0xe0 [ 56.677168] do_set_master+0x163/0x1f0 [ 56.681049] do_setlink+0x9dd/0x2c50 [ 56.684752] ? trace_hardirqs_on+0x10/0x10 [ 56.689055] ? find_held_lock+0x36/0x1d0 [ 56.693115] ? trace_hardirqs_off+0x10/0x10 [ 56.697427] ? rtnl_register+0x20/0x20 [ 56.701307] ? find_held_lock+0x36/0x1d0 [ 56.705361] ? is_bpf_text_address+0x60/0xe0 [ 56.709765] ? lock_downgrade+0x7f0/0x7f0 [ 56.713914] ? __lock_acquire+0x6a4/0x4500 [ 56.718137] ? __lock_acquire+0x6a4/0x4500 [ 56.722358] ? __kernel_text_address+0xd/0x40 [ 56.726844] ? unwind_get_return_address+0x61/0xa0 [ 56.731781] ? __save_stack_trace+0x7e/0xd0 [ 56.736105] rtnl_newlink+0xe0c/0x1390 [ 56.739978] ? save_stack_trace+0x16/0x20 [ 56.744115] ? save_stack+0x43/0xd0 [ 56.747742] ? rtnl_link_unregister+0x270/0x270 [ 56.752406] ? avc_has_perm_noaudit+0x236/0x400 [ 56.757074] ? lock_downgrade+0x7f0/0x7f0 [ 56.761222] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 56.765689] ? lock_acquire+0x173/0x400 [ 56.769667] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 56.774067] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 56.778475] rtnetlink_rcv_msg+0x34f/0x9d0 [ 56.782705] ? rtnl_bridge_getlink+0x760/0x760 [ 56.787277] ? find_held_lock+0x36/0x1d0 [ 56.791339] netlink_rcv_skb+0x133/0x370 [ 56.795399] ? rtnl_bridge_getlink+0x760/0x760 [ 56.799974] ? netlink_ack+0xa00/0xa00 [ 56.803853] ? netlink_deliver_tap+0x8e/0x920 [ 56.808341] rtnetlink_rcv+0x10/0x20 [ 56.812047] netlink_unicast+0x40d/0x5f0 [ 56.816150] ? netlink_attachskb+0x6e0/0x6e0 [ 56.820562] netlink_sendmsg+0x730/0xbd0 [ 56.824623] ? netlink_unicast+0x5f0/0x5f0 [ 56.828852] ? selinux_socket_sendmsg+0x31/0x40 [ 56.833522] ? security_socket_sendmsg+0x6a/0xa0 [ 56.838273] ? netlink_unicast+0x5f0/0x5f0 [ 56.842495] sock_sendmsg+0xb5/0xf0 [ 56.846104] ___sys_sendmsg+0x625/0x920 [ 56.850072] ? trace_hardirqs_off+0x10/0x10 [ 56.854392] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 56.859145] ? find_held_lock+0x36/0x1d0 [ 56.863209] ? lock_downgrade+0x7f0/0x7f0 [ 56.867347] ? __fget+0x1ca/0x2f0 [ 56.870797] ? __fget_light+0x166/0x200 [ 56.874776] ? __fdget+0xe/0x10 [ 56.878058] ? sockfd_lookup_light+0x1c/0x150 [ 56.882549] __sys_sendmsg+0xc1/0x140 [ 56.886341] ? SyS_shutdown+0x180/0x180 [ 56.890307] ? __sb_end_write+0xa4/0xd0 [ 56.894278] ? mutex_unlock+0xd/0x10 [ 56.897995] ? do_syscall_64+0x4c/0x5b0 [ 56.901974] ? __sys_sendmsg+0x140/0x140 [ 56.906022] SyS_sendmsg+0xd/0x20 [ 56.909575] do_syscall_64+0x1c7/0x5b0 [ 56.913484] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.918334] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 56.923512] RIP: 0033:0x459ef9 [ 56.926687] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.934379] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 56.941635] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 56.948934] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 56.956190] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 56.963442] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 56.974772] batman_adv: batadv0: Adding interface: ip6gretap0 [ 56.981018] 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. [ 57.006644] batman_adv: batadv0: Interface activated: ip6gretap0 [ 57.013812] FAULT_INJECTION: forcing a failure. [ 57.013812] name failslab, interval 1, probability 0, space 0, times 0 [ 57.052546] CPU: 1 PID: 7015 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 57.060377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.069743] Call Trace: [ 57.072341] dump_stack+0xf7/0x13b [ 57.075884] should_fail.cold.3+0x105/0x14b [ 57.080212] should_failslab+0xba/0xf0 [ 57.084213] __kmalloc_track_caller+0x2e4/0x7a0 [ 57.088890] ? kstrdup_const+0x1f/0x30 [ 57.092762] kstrdup+0x2c/0x60 [ 57.095937] kstrdup_const+0x1f/0x30 [ 57.099631] __kernfs_new_node+0x27/0x470 [ 57.103770] ? lock_downgrade+0x7f0/0x7f0 [ 57.107905] kernfs_new_node+0x5e/0xe0 [ 57.111778] kernfs_create_link+0x25/0x130 [ 57.115999] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 57.121187] sysfs_create_link+0x43/0xb0 [ 57.125241] netdev_adjacent_sysfs_add+0x94/0xb0 [ 57.130582] ? napi_disable+0x80/0x80 [ 57.134380] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 57.139558] __netdev_upper_dev_link+0x174/0x1f0 [ 57.144304] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 57.149049] netdev_master_upper_dev_link+0x14/0x20 [ 57.154048] batadv_hardif_enable_interface+0x1af/0x990 [ 57.159405] batadv_softif_slave_add+0x82/0xe0 [ 57.163980] do_set_master+0x163/0x1f0 [ 57.167856] do_setlink+0x9dd/0x2c50 [ 57.171558] ? __lock_acquire+0x6a4/0x4500 [ 57.175786] ? trace_hardirqs_off+0x10/0x10 [ 57.180096] ? rtnl_register+0x20/0x20 [ 57.183966] ? trace_hardirqs_on+0x10/0x10 [ 57.188194] ? trace_hardirqs_off+0x10/0x10 [ 57.192516] ? __lock_acquire+0x6a4/0x4500 [ 57.196747] ? trace_hardirqs_off+0x10/0x10 [ 57.201053] ? trace_hardirqs_off+0x10/0x10 [ 57.205355] ? __lock_is_held+0xb5/0x140 [ 57.209410] ? trace_hardirqs_off+0x10/0x10 [ 57.213735] rtnl_newlink+0xe0c/0x1390 [ 57.217614] ? rtnl_link_unregister+0x270/0x270 [ 57.222266] ? finish_task_switch+0x178/0x650 [ 57.226735] ? finish_task_switch+0x14d/0x650 [ 57.231210] ? find_held_lock+0x36/0x1d0 [ 57.235254] ? __mutex_lock+0x8b7/0x14c0 [ 57.239295] ? lock_downgrade+0x7f0/0x7f0 [ 57.243442] ? do_raw_spin_unlock+0x16a/0x250 [ 57.247943] rtnetlink_rcv_msg+0x34f/0x9d0 [ 57.252164] ? rtnl_bridge_getlink+0x760/0x760 [ 57.256737] ? find_held_lock+0x36/0x1d0 [ 57.260788] netlink_rcv_skb+0x133/0x370 [ 57.264840] ? rtnl_bridge_getlink+0x760/0x760 [ 57.269416] ? netlink_ack+0xa00/0xa00 [ 57.273303] ? netlink_deliver_tap+0x8e/0x920 [ 57.277790] rtnetlink_rcv+0x10/0x20 [ 57.281489] netlink_unicast+0x40d/0x5f0 [ 57.285539] ? netlink_attachskb+0x6e0/0x6e0 [ 57.289939] netlink_sendmsg+0x730/0xbd0 [ 57.293991] ? netlink_unicast+0x5f0/0x5f0 [ 57.298210] ? selinux_socket_sendmsg+0x31/0x40 [ 57.302912] ? security_socket_sendmsg+0x6a/0xa0 [ 57.307671] ? netlink_unicast+0x5f0/0x5f0 [ 57.311901] sock_sendmsg+0xb5/0xf0 [ 57.315562] ___sys_sendmsg+0x625/0x920 [ 57.319527] ? trace_hardirqs_off+0x10/0x10 [ 57.323834] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 57.328577] ? find_held_lock+0x36/0x1d0 [ 57.332629] ? lock_downgrade+0x7f0/0x7f0 [ 57.336776] ? __fget+0x1ca/0x2f0 [ 57.340230] ? __fget_light+0x166/0x200 [ 57.344198] ? __fdget+0xe/0x10 [ 57.347463] ? sockfd_lookup_light+0x1c/0x150 [ 57.351952] __sys_sendmsg+0xc1/0x140 [ 57.355748] ? SyS_shutdown+0x180/0x180 [ 57.359765] ? __sb_end_write+0xa4/0xd0 [ 57.363738] ? mutex_unlock+0xd/0x10 [ 57.367441] ? do_syscall_64+0x4c/0x5b0 [ 57.371407] ? __sys_sendmsg+0x140/0x140 [ 57.375465] SyS_sendmsg+0xd/0x20 [ 57.378906] do_syscall_64+0x1c7/0x5b0 [ 57.382783] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.387619] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 57.392802] RIP: 0033:0x459ef9 [ 57.395978] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.403678] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 57.410938] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 57.418192] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 57.425447] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 57.433063] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 57.445373] FAULT_INJECTION: forcing a failure. [ 57.445373] name failslab, interval 1, probability 0, space 0, times 0 [ 57.457887] CPU: 1 PID: 7018 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 57.465689] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.475040] Call Trace: [ 57.477631] dump_stack+0xf7/0x13b [ 57.481173] should_fail.cold.3+0x105/0x14b [ 57.485499] should_failslab+0xba/0xf0 [ 57.489386] kmem_cache_alloc_node+0x287/0x790 [ 57.493985] __alloc_skb+0x92/0x500 [ 57.497628] ? skb_trim+0x160/0x160 [ 57.501255] ? if_nlmsg_size+0x2d9/0x6f0 [ 57.505310] rtmsg_ifinfo_build_skb+0x68/0x120 [ 57.509882] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 57.514718] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 57.519674] rtnetlink_event+0xc2/0x110 [ 57.523649] notifier_call_chain+0xd6/0x150 [ 57.527977] raw_notifier_call_chain+0x11/0x20 [ 57.532563] call_netdevice_notifiers_info+0x4b/0x60 [ 57.537668] __netdev_upper_dev_link+0x18e/0x1f0 [ 57.542423] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 57.547181] netdev_master_upper_dev_link+0x14/0x20 [ 57.552186] batadv_hardif_enable_interface+0x1af/0x990 [ 57.557543] batadv_softif_slave_add+0x82/0xe0 [ 57.562122] do_set_master+0x163/0x1f0 [ 57.566008] do_setlink+0x9dd/0x2c50 [ 57.569724] ? find_held_lock+0x36/0x1d0 [ 57.573781] ? rtnl_register+0x20/0x20 [ 57.577661] ? load_balance+0xb38/0x2190 [ 57.581723] ? lock_downgrade+0x7f0/0x7f0 [ 57.585862] ? lock_pin_lock+0x340/0x340 [ 57.589921] ? __lock_acquire+0x6a4/0x4500 [ 57.594151] ? trace_hardirqs_off+0x10/0x10 [ 57.598453] ? __lock_is_held+0xb5/0x140 [ 57.602604] ? trace_hardirqs_off+0x10/0x10 [ 57.606922] rtnl_newlink+0xe0c/0x1390 [ 57.610801] ? rtnl_link_unregister+0x270/0x270 [ 57.615451] ? finish_task_switch+0x178/0x650 [ 57.619930] ? finish_task_switch+0x14d/0x650 [ 57.624470] ? find_held_lock+0x36/0x1d0 [ 57.628538] ? __mutex_lock+0x8b7/0x14c0 [ 57.632598] ? lock_downgrade+0x7f0/0x7f0 [ 57.636742] ? do_raw_spin_unlock+0x16a/0x250 [ 57.641261] rtnetlink_rcv_msg+0x34f/0x9d0 [ 57.645504] ? rtnl_bridge_getlink+0x760/0x760 [ 57.650087] ? find_held_lock+0x36/0x1d0 [ 57.654145] netlink_rcv_skb+0x133/0x370 [ 57.658190] ? rtnl_bridge_getlink+0x760/0x760 [ 57.662760] ? netlink_ack+0xa00/0xa00 [ 57.666652] ? netlink_deliver_tap+0x8e/0x920 [ 57.671151] rtnetlink_rcv+0x10/0x20 [ 57.674859] netlink_unicast+0x40d/0x5f0 [ 57.678906] ? netlink_attachskb+0x6e0/0x6e0 [ 57.683317] netlink_sendmsg+0x730/0xbd0 [ 57.687375] ? netlink_unicast+0x5f0/0x5f0 [ 57.691597] ? selinux_socket_sendmsg+0x31/0x40 [ 57.696250] ? security_socket_sendmsg+0x6a/0xa0 [ 57.701000] ? netlink_unicast+0x5f0/0x5f0 [ 57.705228] sock_sendmsg+0xb5/0xf0 [ 57.708842] ___sys_sendmsg+0x625/0x920 [ 57.712811] ? trace_hardirqs_off+0x10/0x10 [ 57.717122] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 57.721870] ? find_held_lock+0x36/0x1d0 [ 57.725934] ? lock_downgrade+0x7f0/0x7f0 [ 57.730077] ? __fget+0x1ca/0x2f0 [ 57.733512] ? __fget_light+0x166/0x200 [ 57.737474] ? __fdget+0xe/0x10 [ 57.740747] ? sockfd_lookup_light+0x1c/0x150 [ 57.745246] __sys_sendmsg+0xc1/0x140 [ 57.749039] ? SyS_shutdown+0x180/0x180 [ 57.753009] ? __sb_end_write+0xa4/0xd0 [ 57.756984] ? mutex_unlock+0xd/0x10 [ 57.760698] ? do_syscall_64+0x4c/0x5b0 [ 57.764671] ? __sys_sendmsg+0x140/0x140 [ 57.768723] SyS_sendmsg+0xd/0x20 [ 57.772163] do_syscall_64+0x1c7/0x5b0 [ 57.776039] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.780880] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 57.786061] RIP: 0033:0x459ef9 [ 57.789235] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.796928] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 57.804183] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 57.811444] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 57.818699] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 57.825957] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 57.836468] batman_adv: batadv0: Adding interface: ip6gretap0 [ 57.842476] 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. [ 57.867385] batman_adv: batadv0: Interface activated: ip6gretap0 [ 57.874765] FAULT_INJECTION: forcing a failure. [ 57.874765] name failslab, interval 1, probability 0, space 0, times 0 [ 57.898143] CPU: 0 PID: 7027 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 57.906002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.915357] Call Trace: [ 57.917946] dump_stack+0xf7/0x13b [ 57.921597] should_fail.cold.3+0x105/0x14b [ 57.925919] should_failslab+0xba/0xf0 [ 57.929810] kmem_cache_alloc_node+0x287/0x790 [ 57.934394] __alloc_skb+0x92/0x500 [ 57.938023] ? skb_trim+0x160/0x160 [ 57.941643] ? if_nlmsg_size+0x2d9/0x6f0 [ 57.945691] rtmsg_ifinfo_build_skb+0x68/0x120 [ 57.950266] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 57.955100] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 57.960019] rtnetlink_event+0xc2/0x110 [ 57.963982] notifier_call_chain+0xd6/0x150 [ 57.968294] raw_notifier_call_chain+0x11/0x20 [ 57.972878] call_netdevice_notifiers_info+0x4b/0x60 [ 57.977973] __netdev_upper_dev_link+0x18e/0x1f0 [ 57.982720] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 57.987473] netdev_master_upper_dev_link+0x14/0x20 [ 57.992486] batadv_hardif_enable_interface+0x1af/0x990 [ 57.997852] batadv_softif_slave_add+0x82/0xe0 [ 58.002426] do_set_master+0x163/0x1f0 [ 58.006305] do_setlink+0x9dd/0x2c50 [ 58.010009] ? __lock_acquire+0x6a4/0x4500 [ 58.014243] ? trace_hardirqs_off+0x10/0x10 [ 58.018565] ? rtnl_register+0x20/0x20 [ 58.022450] ? trace_hardirqs_on+0x10/0x10 [ 58.026674] ? trace_hardirqs_off+0x10/0x10 [ 58.031000] ? __lock_acquire+0x6a4/0x4500 [ 58.035226] ? trace_hardirqs_off+0x10/0x10 [ 58.039674] ? trace_hardirqs_off+0x10/0x10 [ 58.043986] ? __lock_is_held+0xb5/0x140 [ 58.048037] ? trace_hardirqs_off+0x10/0x10 [ 58.052351] ? trace_hardirqs_off+0x10/0x10 [ 58.056693] rtnl_newlink+0xe0c/0x1390 [ 58.060589] ? rtnl_link_unregister+0x270/0x270 [ 58.065252] ? finish_task_switch+0x178/0x650 [ 58.069728] ? finish_task_switch+0x14d/0x650 [ 58.074221] ? find_held_lock+0x36/0x1d0 [ 58.078283] ? __mutex_lock+0x8b7/0x14c0 [ 58.082333] ? lock_downgrade+0x7f0/0x7f0 [ 58.086648] ? do_raw_spin_unlock+0x16a/0x250 [ 58.091172] rtnetlink_rcv_msg+0x34f/0x9d0 [ 58.095399] ? rtnl_bridge_getlink+0x760/0x760 [ 58.099971] ? find_held_lock+0x36/0x1d0 [ 58.104022] netlink_rcv_skb+0x133/0x370 [ 58.108080] ? rtnl_bridge_getlink+0x760/0x760 [ 58.112651] ? netlink_ack+0xa00/0xa00 [ 58.116531] ? netlink_deliver_tap+0x8e/0x920 [ 58.121019] rtnetlink_rcv+0x10/0x20 [ 58.124722] netlink_unicast+0x40d/0x5f0 [ 58.128775] ? netlink_attachskb+0x6e0/0x6e0 [ 58.133173] netlink_sendmsg+0x730/0xbd0 [ 58.137225] ? netlink_unicast+0x5f0/0x5f0 [ 58.141453] ? selinux_socket_sendmsg+0x31/0x40 [ 58.146103] ? security_socket_sendmsg+0x6a/0xa0 [ 58.150850] ? netlink_unicast+0x5f0/0x5f0 [ 58.155092] sock_sendmsg+0xb5/0xf0 [ 58.158712] ___sys_sendmsg+0x625/0x920 [ 58.162676] ? trace_hardirqs_off+0x10/0x10 [ 58.166985] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 58.171742] ? find_held_lock+0x36/0x1d0 [ 58.175800] ? lock_downgrade+0x7f0/0x7f0 [ 58.180060] ? __fget+0x1ca/0x2f0 [ 58.183514] ? __fget_light+0x166/0x200 [ 58.187476] ? __fdget+0xe/0x10 [ 58.190741] ? sockfd_lookup_light+0x1c/0x150 [ 58.195222] __sys_sendmsg+0xc1/0x140 [ 58.199003] ? SyS_shutdown+0x180/0x180 [ 58.202957] ? __sb_end_write+0xa4/0xd0 [ 58.206954] ? mutex_unlock+0xd/0x10 [ 58.210662] ? do_syscall_64+0x4c/0x5b0 [ 58.214622] ? __sys_sendmsg+0x140/0x140 [ 58.218669] SyS_sendmsg+0xd/0x20 [ 58.222116] do_syscall_64+0x1c7/0x5b0 [ 58.225992] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 58.230831] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 58.236008] RIP: 0033:0x459ef9 [ 58.239178] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.246876] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 58.254133] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 58.261389] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 58.268645] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 58.275903] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 58.285410] batman_adv: batadv0: Adding interface: veth1 [ 58.291330] batman_adv: batadv0: The MTU of interface veth1 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. [ 58.316314] batman_adv: batadv0: Interface activated: veth1 [ 58.323881] FAULT_INJECTION: forcing a failure. [ 58.323881] name failslab, interval 1, probability 0, space 0, times 0 [ 58.346046] CPU: 0 PID: 7038 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 58.353870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.363219] Call Trace: [ 58.365802] dump_stack+0xf7/0x13b [ 58.369347] should_fail.cold.3+0x105/0x14b [ 58.373671] should_failslab+0xba/0xf0 [ 58.377569] kmem_cache_alloc+0x2cf/0x790 [ 58.381841] ? memcpy+0x45/0x50 [ 58.385124] ? kstrdup+0x42/0x60 [ 58.388486] __kernfs_new_node+0x63/0x470 [ 58.392676] ? lock_downgrade+0x7f0/0x7f0 [ 58.396836] kernfs_new_node+0x5e/0xe0 [ 58.400715] kernfs_create_link+0x25/0x130 [ 58.404945] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 58.410139] sysfs_create_link+0x43/0xb0 [ 58.414196] netdev_adjacent_sysfs_add+0x94/0xb0 [ 58.418949] ? napi_disable+0x80/0x80 [ 58.422740] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 58.427962] __netdev_upper_dev_link+0x174/0x1f0 [ 58.432716] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 58.437470] netdev_master_upper_dev_link+0x14/0x20 [ 58.442482] batadv_hardif_enable_interface+0x1af/0x990 [ 58.447839] batadv_softif_slave_add+0x82/0xe0 [ 58.452415] do_set_master+0x163/0x1f0 [ 58.456306] do_setlink+0x9dd/0x2c50 [ 58.460026] ? rtnl_register+0x20/0x20 [ 58.463908] ? trace_hardirqs_on+0x10/0x10 [ 58.468129] ? trace_hardirqs_off+0x10/0x10 [ 58.472441] ? find_held_lock+0x36/0x1d0 [ 58.476498] ? find_held_lock+0x36/0x1d0 [ 58.480561] ? free_one_page+0x9c4/0x1050 [ 58.484711] ? lock_downgrade+0x7f0/0x7f0 [ 58.488849] ? __this_cpu_preempt_check+0x13/0x20 [ 58.493721] ? do_raw_spin_unlock+0x16a/0x250 [ 58.498212] rtnl_newlink+0xe0c/0x1390 [ 58.502104] ? rtnl_link_unregister+0x270/0x270 [ 58.506769] ? finish_task_switch+0x448/0x650 [ 58.511360] ? find_held_lock+0x36/0x1d0 [ 58.515424] ? __mutex_lock+0x8b7/0x14c0 [ 58.519485] ? lock_downgrade+0x7f0/0x7f0 [ 58.523621] ? do_raw_spin_unlock+0x16a/0x250 [ 58.528127] rtnetlink_rcv_msg+0x34f/0x9d0 [ 58.532359] ? rtnl_bridge_getlink+0x760/0x760 [ 58.536931] ? find_held_lock+0x36/0x1d0 [ 58.540990] netlink_rcv_skb+0x133/0x370 [ 58.545111] ? rtnl_bridge_getlink+0x760/0x760 [ 58.549686] ? netlink_ack+0xa00/0xa00 [ 58.553570] ? netlink_deliver_tap+0x8e/0x920 [ 58.558051] rtnetlink_rcv+0x10/0x20 [ 58.561753] netlink_unicast+0x40d/0x5f0 [ 58.565802] ? netlink_attachskb+0x6e0/0x6e0 [ 58.570204] netlink_sendmsg+0x730/0xbd0 [ 58.574266] ? netlink_unicast+0x5f0/0x5f0 [ 58.578496] ? selinux_socket_sendmsg+0x31/0x40 [ 58.583169] ? security_socket_sendmsg+0x6a/0xa0 [ 58.587908] ? netlink_unicast+0x5f0/0x5f0 [ 58.592129] sock_sendmsg+0xb5/0xf0 [ 58.595749] ___sys_sendmsg+0x625/0x920 [ 58.599714] ? trace_hardirqs_off+0x10/0x10 [ 58.604031] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 58.608778] ? find_held_lock+0x36/0x1d0 [ 58.612848] ? lock_downgrade+0x7f0/0x7f0 [ 58.616991] ? __fget+0x1ca/0x2f0 [ 58.620440] ? __fget_light+0x166/0x200 [ 58.624412] ? __fdget+0xe/0x10 [ 58.627690] ? sockfd_lookup_light+0x1c/0x150 [ 58.632188] __sys_sendmsg+0xc1/0x140 [ 58.636062] ? SyS_shutdown+0x180/0x180 [ 58.640034] ? __sb_end_write+0xa4/0xd0 [ 58.644008] ? mutex_unlock+0xd/0x10 [ 58.647710] ? do_syscall_64+0x4c/0x5b0 [ 58.651685] ? __sys_sendmsg+0x140/0x140 [ 58.655735] SyS_sendmsg+0xd/0x20 [ 58.659170] do_syscall_64+0x1c7/0x5b0 [ 58.663043] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 58.667884] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 58.673068] RIP: 0033:0x459ef9 [ 58.676245] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.683935] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 58.691194] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 58.698457] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 58.705716] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 58.712976] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 58.724891] FAULT_INJECTION: forcing a failure. [ 58.724891] name failslab, interval 1, probability 0, space 0, times 0 [ 58.737036] CPU: 1 PID: 7044 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 58.744833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.754191] Call Trace: [ 58.756793] dump_stack+0xf7/0x13b [ 58.760333] should_fail.cold.3+0x105/0x14b [ 58.764650] should_failslab+0xba/0xf0 [ 58.768538] kmem_cache_alloc+0x47/0x790 [ 58.772596] ? kasan_kmalloc+0xc7/0xe0 [ 58.776489] ? kasan_slab_alloc+0x12/0x20 [ 58.780632] ? kmem_cache_alloc+0x12e/0x790 [ 58.784942] ? __kernfs_new_node+0x63/0x470 [ 58.789248] ? kernfs_new_node+0x5e/0xe0 [ 58.793286] ? kernfs_create_link+0x25/0x130 [ 58.797675] radix_tree_node_alloc.constprop.20+0x182/0x330 [ 58.803438] ? do_setlink+0x9dd/0x2c50 [ 58.807322] ? rtnl_newlink+0xe0c/0x1390 [ 58.811365] ? rtnetlink_rcv_msg+0x34f/0x9d0 [ 58.815764] idr_get_free_cmn+0x4b2/0x9b0 [ 58.819906] idr_alloc_cmn+0xba/0x180 [ 58.823692] ? __fprop_inc_percpu_max+0x1c0/0x1c0 [ 58.828520] ? __lock_is_held+0xb5/0x140 [ 58.833174] idr_alloc_cyclic+0xdd/0x1e6 [ 58.837213] ? ida_simple_remove+0x50/0x50 [ 58.841435] ? debug_smp_processor_id+0x17/0x20 [ 58.846100] __kernfs_new_node+0x9e/0x470 [ 58.850232] ? lock_downgrade+0x7f0/0x7f0 [ 58.854372] kernfs_new_node+0x5e/0xe0 [ 58.858243] kernfs_create_link+0x25/0x130 [ 58.862460] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 58.867630] sysfs_create_link+0x43/0xb0 [ 58.871677] netdev_adjacent_sysfs_add+0x94/0xb0 [ 58.876419] ? napi_disable+0x80/0x80 [ 58.880203] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 58.885483] __netdev_upper_dev_link+0x174/0x1f0 [ 58.890231] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 58.894966] netdev_master_upper_dev_link+0x14/0x20 [ 58.899963] batadv_hardif_enable_interface+0x1af/0x990 [ 58.905316] batadv_softif_slave_add+0x82/0xe0 [ 58.909886] do_set_master+0x163/0x1f0 [ 58.913751] do_setlink+0x9dd/0x2c50 [ 58.917449] ? find_held_lock+0x36/0x1d0 [ 58.921500] ? rtnl_register+0x20/0x20 [ 58.925364] ? load_balance+0xb38/0x2190 [ 58.929401] ? lock_downgrade+0x7f0/0x7f0 [ 58.933529] ? lock_pin_lock+0x340/0x340 [ 58.937574] ? __lock_acquire+0x6a4/0x4500 [ 58.941796] ? trace_hardirqs_off+0x10/0x10 [ 58.946107] ? __lock_is_held+0xb5/0x140 [ 58.950149] ? trace_hardirqs_off+0x10/0x10 [ 58.954453] rtnl_newlink+0xe0c/0x1390 [ 58.958322] ? rtnl_link_unregister+0x270/0x270 [ 58.962984] ? finish_task_switch+0x178/0x650 [ 58.967480] ? finish_task_switch+0x14d/0x650 [ 58.971984] ? find_held_lock+0x36/0x1d0 [ 58.976050] ? __mutex_lock+0x8b7/0x14c0 [ 58.980107] ? lock_downgrade+0x7f0/0x7f0 [ 58.984277] ? do_raw_spin_unlock+0x16a/0x250 [ 58.988768] rtnetlink_rcv_msg+0x34f/0x9d0 [ 58.992993] ? rtnl_bridge_getlink+0x760/0x760 [ 58.997562] ? find_held_lock+0x36/0x1d0 [ 59.001607] netlink_rcv_skb+0x133/0x370 [ 59.005662] ? rtnl_bridge_getlink+0x760/0x760 [ 59.010232] ? netlink_ack+0xa00/0xa00 [ 59.014106] ? netlink_deliver_tap+0x8e/0x920 [ 59.018586] rtnetlink_rcv+0x10/0x20 [ 59.022281] netlink_unicast+0x40d/0x5f0 [ 59.026323] ? netlink_attachskb+0x6e0/0x6e0 [ 59.030729] netlink_sendmsg+0x730/0xbd0 [ 59.034770] ? netlink_unicast+0x5f0/0x5f0 [ 59.038984] ? selinux_socket_sendmsg+0x31/0x40 [ 59.043631] ? security_socket_sendmsg+0x6a/0xa0 [ 59.048368] ? netlink_unicast+0x5f0/0x5f0 [ 59.052591] sock_sendmsg+0xb5/0xf0 [ 59.056219] ___sys_sendmsg+0x625/0x920 [ 59.060173] ? trace_hardirqs_off+0x10/0x10 [ 59.064482] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 59.069229] ? find_held_lock+0x36/0x1d0 [ 59.073279] ? lock_downgrade+0x7f0/0x7f0 [ 59.077407] ? __fget+0x1ca/0x2f0 [ 59.080837] ? __fget_light+0x166/0x200 [ 59.084796] ? __fdget+0xe/0x10 [ 59.088063] ? sockfd_lookup_light+0x1c/0x150 [ 59.092554] __sys_sendmsg+0xc1/0x140 [ 59.096332] ? SyS_shutdown+0x180/0x180 [ 59.100293] ? __sb_end_write+0xa4/0xd0 [ 59.104254] ? mutex_unlock+0xd/0x10 [ 59.107958] ? do_syscall_64+0x4c/0x5b0 [ 59.111917] ? __sys_sendmsg+0x140/0x140 [ 59.115959] SyS_sendmsg+0xd/0x20 [ 59.119398] do_syscall_64+0x1c7/0x5b0 [ 59.123261] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.128093] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 59.133270] RIP: 0033:0x459ef9 [ 59.136443] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.144135] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 59.151392] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 59.158646] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 59.165910] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 59.173174] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 59.182198] batman_adv: batadv0: Adding interface: syz_tun [ 59.187842] 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. [ 59.213111] batman_adv: batadv0: Interface activated: syz_tun [ 59.219459] FAULT_INJECTION: forcing a failure. [ 59.219459] name failslab, interval 1, probability 0, space 0, times 0 [ 59.232493] CPU: 1 PID: 7050 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 59.240300] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.249752] Call Trace: [ 59.252345] dump_stack+0xf7/0x13b [ 59.255881] should_fail.cold.3+0x105/0x14b [ 59.260197] should_failslab+0xba/0xf0 [ 59.264081] kmem_cache_alloc_node+0x287/0x790 [ 59.268670] __alloc_skb+0x92/0x500 [ 59.272299] ? skb_trim+0x160/0x160 [ 59.275932] ? if_nlmsg_size+0x2d9/0x6f0 [ 59.280054] rtmsg_ifinfo_build_skb+0x68/0x120 [ 59.284639] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 59.289480] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 59.294405] rtnetlink_event+0xc2/0x110 [ 59.298371] notifier_call_chain+0xd6/0x150 [ 59.302682] raw_notifier_call_chain+0x11/0x20 [ 59.307255] call_netdevice_notifiers_info+0x4b/0x60 [ 59.312358] __netdev_upper_dev_link+0x18e/0x1f0 [ 59.317118] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 59.321864] netdev_master_upper_dev_link+0x14/0x20 [ 59.326874] batadv_hardif_enable_interface+0x1af/0x990 [ 59.332236] batadv_softif_slave_add+0x82/0xe0 [ 59.336806] do_set_master+0x163/0x1f0 [ 59.340681] do_setlink+0x9dd/0x2c50 [ 59.344375] ? __lock_acquire+0x6a4/0x4500 [ 59.348590] ? trace_hardirqs_off+0x10/0x10 [ 59.352894] ? rtnl_register+0x20/0x20 [ 59.356884] ? trace_hardirqs_on+0x10/0x10 [ 59.361108] ? __lock_acquire+0x6a4/0x4500 [ 59.365337] ? trace_hardirqs_off+0x10/0x10 [ 59.369641] ? trace_hardirqs_off+0x10/0x10 [ 59.373952] ? trace_hardirqs_off+0x10/0x10 [ 59.378269] rtnl_newlink+0xe0c/0x1390 [ 59.382149] ? rtnl_link_unregister+0x270/0x270 [ 59.386801] ? finish_task_switch+0x178/0x650 [ 59.391288] ? finish_task_switch+0x14d/0x650 [ 59.395790] ? find_held_lock+0x36/0x1d0 [ 59.399843] ? __mutex_lock+0x8b7/0x14c0 [ 59.403884] ? lock_downgrade+0x7f0/0x7f0 [ 59.408028] ? do_raw_spin_unlock+0x16a/0x250 [ 59.412544] rtnetlink_rcv_msg+0x34f/0x9d0 [ 59.416773] ? rtnl_bridge_getlink+0x760/0x760 [ 59.421347] ? find_held_lock+0x36/0x1d0 [ 59.425406] netlink_rcv_skb+0x133/0x370 [ 59.429453] ? rtnl_bridge_getlink+0x760/0x760 [ 59.434026] ? netlink_ack+0xa00/0xa00 [ 59.437911] ? netlink_deliver_tap+0x8e/0x920 [ 59.442412] rtnetlink_rcv+0x10/0x20 [ 59.446219] netlink_unicast+0x40d/0x5f0 [ 59.450279] ? netlink_attachskb+0x6e0/0x6e0 [ 59.454694] netlink_sendmsg+0x730/0xbd0 [ 59.458763] ? netlink_unicast+0x5f0/0x5f0 [ 59.462986] ? selinux_socket_sendmsg+0x31/0x40 [ 59.467640] ? security_socket_sendmsg+0x6a/0xa0 [ 59.472386] ? netlink_unicast+0x5f0/0x5f0 [ 59.476617] sock_sendmsg+0xb5/0xf0 [ 59.480231] ___sys_sendmsg+0x625/0x920 [ 59.484205] ? trace_hardirqs_off+0x10/0x10 [ 59.488562] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 59.493313] ? find_held_lock+0x36/0x1d0 [ 59.497375] ? lock_downgrade+0x7f0/0x7f0 [ 59.501519] ? __fget+0x1ca/0x2f0 [ 59.504966] ? __fget_light+0x166/0x200 [ 59.508980] ? __fdget+0xe/0x10 [ 59.512325] ? sockfd_lookup_light+0x1c/0x150 [ 59.516866] __sys_sendmsg+0xc1/0x140 [ 59.520656] ? SyS_shutdown+0x180/0x180 [ 59.524619] ? __sb_end_write+0xa4/0xd0 [ 59.528632] ? mutex_unlock+0xd/0x10 [ 59.532330] ? do_syscall_64+0x4c/0x5b0 [ 59.536285] ? __sys_sendmsg+0x140/0x140 [ 59.540326] SyS_sendmsg+0xd/0x20 [ 59.543807] do_syscall_64+0x1c7/0x5b0 [ 59.547684] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.552627] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 59.557803] RIP: 0033:0x459ef9 [ 59.560971] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.568656] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 59.575919] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 59.583174] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 59.590424] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 59.597680] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 59.607724] batman_adv: batadv0: Adding interface: team0 [ 59.613292] 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. [ 59.637897] batman_adv: batadv0: Interface activated: team0 [ 59.644428] device bridge_slave_0 left promiscuous mode [ 59.649904] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.656349] FAULT_INJECTION: forcing a failure. [ 59.656349] name failslab, interval 1, probability 0, space 0, times 0 [ 59.667745] CPU: 1 PID: 7051 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 59.675538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.684890] Call Trace: [ 59.687474] dump_stack+0xf7/0x13b [ 59.691047] should_fail.cold.3+0x105/0x14b [ 59.695364] should_failslab+0xba/0xf0 [ 59.699244] kmem_cache_alloc_node+0x56/0x790 [ 59.703722] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 59.708814] __alloc_skb+0x92/0x500 [ 59.712426] ? skb_trim+0x160/0x160 [ 59.716033] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 59.721212] ? __lock_is_held+0xb5/0x140 [ 59.725262] fdb_notify+0x88/0x130 [ 59.728781] fdb_delete+0x129/0x3a0 [ 59.732388] br_fdb_delete_by_port+0x163/0x1d0 [ 59.736952] br_stp_disable_port+0xeb/0x150 [ 59.741258] del_nbp+0x119/0x8b0 [ 59.744603] br_del_if+0xc7/0x470 [ 59.748037] br_del_slave+0x10/0x20 [ 59.751642] do_set_master+0xb6/0x1f0 [ 59.755432] do_setlink+0x9dd/0x2c50 [ 59.759189] ? trace_hardirqs_off+0x10/0x10 [ 59.763506] ? lock_downgrade+0x7f0/0x7f0 [ 59.767651] ? trace_hardirqs_off+0x10/0x10 [ 59.771962] ? rtnl_register+0x20/0x20 [ 59.775829] ? trace_hardirqs_off+0x10/0x10 [ 59.780127] ? __lock_is_held+0xb5/0x140 [ 59.784176] ? find_held_lock+0x36/0x1d0 [ 59.788222] ? __lock_acquire+0x6a4/0x4500 [ 59.792435] ? load_balance+0xb38/0x2190 [ 59.796475] ? lock_downgrade+0x7f0/0x7f0 [ 59.800605] ? lock_pin_lock+0x340/0x340 [ 59.804656] ? __lock_acquire+0x6a4/0x4500 [ 59.808975] ? trace_hardirqs_off+0x10/0x10 [ 59.813286] ? __lock_is_held+0xb5/0x140 [ 59.817335] rtnl_newlink+0xe0c/0x1390 [ 59.821203] ? trace_hardirqs_off+0x10/0x10 [ 59.825513] ? memset+0x31/0x40 [ 59.828772] ? rtnl_newlink+0x6d0/0x1390 [ 59.832817] ? rtnl_link_unregister+0x270/0x270 [ 59.837466] ? finish_task_switch+0x178/0x650 [ 59.841941] ? finish_task_switch+0x14d/0x650 [ 59.846534] ? find_held_lock+0x36/0x1d0 [ 59.850587] ? __mutex_lock+0x8b7/0x14c0 [ 59.854631] ? lock_downgrade+0x7f0/0x7f0 [ 59.858757] ? do_raw_spin_unlock+0x16a/0x250 [ 59.863245] rtnetlink_rcv_msg+0x34f/0x9d0 [ 59.867466] ? rtnl_bridge_getlink+0x760/0x760 [ 59.872028] ? find_held_lock+0x36/0x1d0 [ 59.876072] netlink_rcv_skb+0x133/0x370 [ 59.880115] ? rtnl_bridge_getlink+0x760/0x760 [ 59.884695] ? netlink_ack+0xa00/0xa00 [ 59.888570] ? netlink_deliver_tap+0x8e/0x920 [ 59.893046] rtnetlink_rcv+0x10/0x20 [ 59.896749] netlink_unicast+0x40d/0x5f0 [ 59.900819] ? netlink_attachskb+0x6e0/0x6e0 [ 59.905231] netlink_sendmsg+0x730/0xbd0 [ 59.909287] ? netlink_unicast+0x5f0/0x5f0 [ 59.913504] ? selinux_socket_sendmsg+0x31/0x40 [ 59.918152] ? security_socket_sendmsg+0x6a/0xa0 [ 59.922889] ? netlink_unicast+0x5f0/0x5f0 [ 59.927110] sock_sendmsg+0xb5/0xf0 [ 59.930735] ___sys_sendmsg+0x625/0x920 [ 59.934728] ? trace_hardirqs_off+0x10/0x10 [ 59.939051] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 59.943810] ? find_held_lock+0x36/0x1d0 [ 59.947953] ? lock_downgrade+0x7f0/0x7f0 [ 59.952089] ? __fget+0x1ca/0x2f0 [ 59.955523] ? __fget_light+0x166/0x200 [ 59.959487] ? __fdget+0xe/0x10 [ 59.962752] ? sockfd_lookup_light+0x1c/0x150 [ 59.967249] __sys_sendmsg+0xc1/0x140 [ 59.971042] ? SyS_shutdown+0x180/0x180 [ 59.974997] ? __sb_end_write+0xa4/0xd0 [ 59.979060] ? mutex_unlock+0xd/0x10 [ 59.982767] ? do_syscall_64+0x4c/0x5b0 [ 59.986734] ? __sys_sendmsg+0x140/0x140 [ 59.990777] SyS_sendmsg+0xd/0x20 [ 59.994218] do_syscall_64+0x1c7/0x5b0 [ 59.998103] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.002943] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 60.008121] RIP: 0033:0x459ef9 [ 60.011294] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.019018] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 60.026301] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 60.033953] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 60.041208] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 60.048483] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 60.069163] NOHZ: local_softirq_pending 08 [ 60.093942] batman_adv: batadv0: Adding interface: bridge_slave_0 [ 60.100237] batman_adv: batadv0: The MTU of interface bridge_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. [ 60.125441] batman_adv: batadv0: Interface activated: bridge_slave_0 [ 60.132449] FAULT_INJECTION: forcing a failure. [ 60.132449] name failslab, interval 1, probability 0, space 0, times 0 [ 60.145822] CPU: 1 PID: 7054 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 60.153624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.162977] Call Trace: [ 60.165558] dump_stack+0xf7/0x13b [ 60.169079] should_fail.cold.3+0x105/0x14b [ 60.173380] should_failslab+0xba/0xf0 [ 60.177247] kmem_cache_alloc_node+0x287/0x790 [ 60.181810] __alloc_skb+0x92/0x500 [ 60.185467] ? skb_trim+0x160/0x160 [ 60.189082] ? if_nlmsg_size+0x2d9/0x6f0 [ 60.193132] rtmsg_ifinfo_build_skb+0x68/0x120 [ 60.197699] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 60.202521] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 60.207431] rtnetlink_event+0xc2/0x110 [ 60.211426] notifier_call_chain+0xd6/0x150 [ 60.215738] raw_notifier_call_chain+0x11/0x20 [ 60.220311] call_netdevice_notifiers_info+0x4b/0x60 [ 60.225407] __netdev_upper_dev_link+0x18e/0x1f0 [ 60.230156] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 60.234890] netdev_master_upper_dev_link+0x14/0x20 [ 60.239886] batadv_hardif_enable_interface+0x1af/0x990 [ 60.245240] batadv_softif_slave_add+0x82/0xe0 [ 60.249812] do_set_master+0x163/0x1f0 [ 60.253681] do_setlink+0x9dd/0x2c50 [ 60.257373] ? find_held_lock+0x36/0x1d0 [ 60.261418] ? rtnl_register+0x20/0x20 [ 60.265345] ? load_balance+0xb38/0x2190 [ 60.269406] ? lock_downgrade+0x7f0/0x7f0 [ 60.273534] ? lock_pin_lock+0x340/0x340 [ 60.277578] ? __lock_acquire+0x6a4/0x4500 [ 60.281807] ? trace_hardirqs_off+0x10/0x10 [ 60.286122] ? __lock_is_held+0xb5/0x140 [ 60.290172] ? trace_hardirqs_off+0x10/0x10 [ 60.294487] rtnl_newlink+0xe0c/0x1390 [ 60.298364] ? rtnl_link_unregister+0x270/0x270 [ 60.303022] ? finish_task_switch+0x178/0x650 [ 60.307509] ? finish_task_switch+0x14d/0x650 [ 60.311993] ? find_held_lock+0x36/0x1d0 [ 60.316059] ? __mutex_lock+0x8b7/0x14c0 [ 60.320150] ? lock_downgrade+0x7f0/0x7f0 [ 60.324334] ? do_raw_spin_unlock+0x16a/0x250 [ 60.328838] rtnetlink_rcv_msg+0x34f/0x9d0 [ 60.333058] ? rtnl_bridge_getlink+0x760/0x760 [ 60.337630] ? find_held_lock+0x36/0x1d0 [ 60.341683] netlink_rcv_skb+0x133/0x370 [ 60.345729] ? rtnl_bridge_getlink+0x760/0x760 [ 60.350294] ? netlink_ack+0xa00/0xa00 [ 60.354160] ? netlink_deliver_tap+0x8e/0x920 [ 60.358645] rtnetlink_rcv+0x10/0x20 [ 60.362339] netlink_unicast+0x40d/0x5f0 [ 60.366400] ? netlink_attachskb+0x6e0/0x6e0 [ 60.370798] netlink_sendmsg+0x730/0xbd0 [ 60.374846] ? netlink_unicast+0x5f0/0x5f0 [ 60.379120] ? selinux_socket_sendmsg+0x31/0x40 [ 60.383829] ? security_socket_sendmsg+0x6a/0xa0 [ 60.388570] ? netlink_unicast+0x5f0/0x5f0 [ 60.392789] sock_sendmsg+0xb5/0xf0 [ 60.396410] ___sys_sendmsg+0x625/0x920 [ 60.400367] ? trace_hardirqs_off+0x10/0x10 [ 60.404677] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 60.409430] ? find_held_lock+0x36/0x1d0 [ 60.413485] ? lock_downgrade+0x7f0/0x7f0 [ 60.417625] ? __fget+0x1ca/0x2f0 [ 60.421063] ? __fget_light+0x166/0x200 [ 60.425029] ? __fdget+0xe/0x10 [ 60.428315] ? sockfd_lookup_light+0x1c/0x150 [ 60.432810] __sys_sendmsg+0xc1/0x140 [ 60.436601] ? SyS_shutdown+0x180/0x180 [ 60.440627] ? __sb_end_write+0xa4/0xd0 [ 60.444605] ? mutex_unlock+0xd/0x10 [ 60.448309] ? do_syscall_64+0x4c/0x5b0 [ 60.452265] ? __sys_sendmsg+0x140/0x140 [ 60.456314] SyS_sendmsg+0xd/0x20 [ 60.459756] do_syscall_64+0x1c7/0x5b0 [ 60.463627] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.468462] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 60.473640] RIP: 0033:0x459ef9 [ 60.476809] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.484501] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 60.491756] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 60.499011] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 60.506273] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 60.513542] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 60.522764] batman_adv: batadv0: Adding interface: dummy0 [ 60.528414] batman_adv: batadv0: The MTU of interface dummy0 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. [ 60.553526] batman_adv: batadv0: Interface activated: dummy0 [ 60.563727] FAULT_INJECTION: forcing a failure. [ 60.563727] name failslab, interval 1, probability 0, space 0, times 0 [ 60.577743] CPU: 0 PID: 7057 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 60.585551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.594905] Call Trace: [ 60.597539] dump_stack+0xf7/0x13b [ 60.601071] should_fail.cold.3+0x105/0x14b [ 60.605377] should_failslab+0xba/0xf0 [ 60.609261] kmem_cache_alloc+0x2cf/0x790 [ 60.613408] ? memcpy+0x45/0x50 [ 60.616669] ? kstrdup+0x42/0x60 [ 60.620028] __kernfs_new_node+0x63/0x470 [ 60.624170] ? lock_downgrade+0x7f0/0x7f0 [ 60.628316] kernfs_new_node+0x5e/0xe0 [ 60.632200] kernfs_create_link+0x25/0x130 [ 60.636422] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 60.641610] sysfs_create_link+0x43/0xb0 [ 60.645672] netdev_adjacent_sysfs_add+0x94/0xb0 [ 60.650425] ? napi_disable+0x80/0x80 [ 60.654274] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 60.659466] __netdev_upper_dev_link+0x174/0x1f0 [ 60.664218] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 60.668973] netdev_master_upper_dev_link+0x14/0x20 [ 60.673980] batadv_hardif_enable_interface+0x1af/0x990 [ 60.679334] batadv_softif_slave_add+0x82/0xe0 [ 60.683907] do_set_master+0x163/0x1f0 [ 60.687846] do_setlink+0x9dd/0x2c50 [ 60.691548] ? find_held_lock+0x36/0x1d0 [ 60.695593] ? rtnl_register+0x20/0x20 [ 60.699467] ? load_balance+0xb38/0x2190 [ 60.703517] ? lock_downgrade+0x7f0/0x7f0 [ 60.707741] ? lock_pin_lock+0x340/0x340 [ 60.711807] ? __lock_acquire+0x6a4/0x4500 [ 60.716043] ? trace_hardirqs_off+0x10/0x10 [ 60.720354] ? __lock_is_held+0xb5/0x140 [ 60.724406] ? trace_hardirqs_off+0x10/0x10 [ 60.728730] rtnl_newlink+0xe0c/0x1390 [ 60.732619] ? rtnl_link_unregister+0x270/0x270 [ 60.737302] ? finish_task_switch+0x178/0x650 [ 60.741789] ? finish_task_switch+0x14d/0x650 [ 60.746274] ? find_held_lock+0x36/0x1d0 [ 60.750330] ? __mutex_lock+0x8b7/0x14c0 [ 60.754387] ? lock_downgrade+0x7f0/0x7f0 [ 60.758526] ? do_raw_spin_unlock+0x16a/0x250 [ 60.763024] rtnetlink_rcv_msg+0x34f/0x9d0 [ 60.767248] ? rtnl_bridge_getlink+0x760/0x760 [ 60.771816] ? find_held_lock+0x36/0x1d0 [ 60.775866] netlink_rcv_skb+0x133/0x370 [ 60.779915] ? rtnl_bridge_getlink+0x760/0x760 [ 60.784491] ? netlink_ack+0xa00/0xa00 [ 60.788359] ? netlink_deliver_tap+0x8e/0x920 [ 60.792844] rtnetlink_rcv+0x10/0x20 [ 60.796544] netlink_unicast+0x40d/0x5f0 [ 60.800592] ? netlink_attachskb+0x6e0/0x6e0 [ 60.804998] netlink_sendmsg+0x730/0xbd0 [ 60.809046] ? netlink_unicast+0x5f0/0x5f0 [ 60.813264] ? selinux_socket_sendmsg+0x31/0x40 [ 60.817918] ? security_socket_sendmsg+0x6a/0xa0 [ 60.822655] ? netlink_unicast+0x5f0/0x5f0 [ 60.826873] sock_sendmsg+0xb5/0xf0 [ 60.830598] ___sys_sendmsg+0x625/0x920 [ 60.834562] ? trace_hardirqs_off+0x10/0x10 [ 60.838872] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 60.843618] ? find_held_lock+0x36/0x1d0 [ 60.847670] ? lock_downgrade+0x7f0/0x7f0 [ 60.851806] ? __fget+0x1ca/0x2f0 [ 60.855239] ? __fget_light+0x166/0x200 [ 60.859204] ? __fdget+0xe/0x10 [ 60.862480] ? sockfd_lookup_light+0x1c/0x150 [ 60.866964] __sys_sendmsg+0xc1/0x140 [ 60.870752] ? SyS_shutdown+0x180/0x180 [ 60.874719] ? __sb_end_write+0xa4/0xd0 [ 60.878681] ? mutex_unlock+0xd/0x10 [ 60.882391] ? do_syscall_64+0x4c/0x5b0 [ 60.886356] ? __sys_sendmsg+0x140/0x140 [ 60.890414] SyS_sendmsg+0xd/0x20 [ 60.893860] do_syscall_64+0x1c7/0x5b0 [ 60.897738] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.902580] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 60.907799] RIP: 0033:0x459ef9 [ 60.910969] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.918665] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 60.925927] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 60.933183] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 60.940446] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 60.947703] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 60.957918] FAULT_INJECTION: forcing a failure. [ 60.957918] name failslab, interval 1, probability 0, space 0, times 0 [ 60.969475] CPU: 0 PID: 7061 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 60.977277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.986629] Call Trace: [ 60.989218] dump_stack+0xf7/0x13b [ 60.992767] should_fail.cold.3+0x105/0x14b [ 60.997090] should_failslab+0xba/0xf0 [ 61.000978] kmem_cache_alloc_node+0x287/0x790 [ 61.005573] __alloc_skb+0x92/0x500 [ 61.009188] ? skb_trim+0x160/0x160 [ 61.012806] ? if_nlmsg_size+0x2d9/0x6f0 [ 61.016869] rtmsg_ifinfo_build_skb+0x68/0x120 [ 61.021450] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 61.026285] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 61.031208] rtnetlink_event+0xc2/0x110 [ 61.035181] notifier_call_chain+0xd6/0x150 [ 61.039502] raw_notifier_call_chain+0x11/0x20 [ 61.044081] call_netdevice_notifiers_info+0x4b/0x60 [ 61.049178] __netdev_upper_dev_link+0x18e/0x1f0 [ 61.053926] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 61.058690] netdev_master_upper_dev_link+0x14/0x20 [ 61.063700] batadv_hardif_enable_interface+0x1af/0x990 [ 61.069052] batadv_softif_slave_add+0x82/0xe0 [ 61.073625] do_set_master+0x163/0x1f0 [ 61.077529] do_setlink+0x9dd/0x2c50 [ 61.081304] ? find_held_lock+0x36/0x1d0 [ 61.085363] ? rtnl_register+0x20/0x20 [ 61.089232] ? load_balance+0xb38/0x2190 [ 61.093287] ? lock_downgrade+0x7f0/0x7f0 [ 61.097432] ? lock_pin_lock+0x340/0x340 [ 61.101483] ? __lock_acquire+0x6a4/0x4500 [ 61.105707] ? trace_hardirqs_off+0x10/0x10 [ 61.110026] ? __lock_is_held+0xb5/0x140 [ 61.114099] ? trace_hardirqs_off+0x10/0x10 [ 61.118431] rtnl_newlink+0xe0c/0x1390 [ 61.122321] ? rtnl_link_unregister+0x270/0x270 [ 61.126970] ? finish_task_switch+0x178/0x650 [ 61.131458] ? finish_task_switch+0x14d/0x650 [ 61.135946] ? find_held_lock+0x36/0x1d0 [ 61.139990] ? __mutex_lock+0x8b7/0x14c0 [ 61.144040] ? lock_downgrade+0x7f0/0x7f0 [ 61.148169] ? do_raw_spin_unlock+0x16a/0x250 [ 61.152680] rtnetlink_rcv_msg+0x34f/0x9d0 [ 61.156919] ? rtnl_bridge_getlink+0x760/0x760 [ 61.161503] ? find_held_lock+0x36/0x1d0 [ 61.165555] netlink_rcv_skb+0x133/0x370 [ 61.169600] ? rtnl_bridge_getlink+0x760/0x760 [ 61.174168] ? netlink_ack+0xa00/0xa00 [ 61.178034] ? netlink_deliver_tap+0x8e/0x920 [ 61.182508] rtnetlink_rcv+0x10/0x20 [ 61.186213] netlink_unicast+0x40d/0x5f0 [ 61.190277] ? netlink_attachskb+0x6e0/0x6e0 [ 61.194687] netlink_sendmsg+0x730/0xbd0 [ 61.198731] ? netlink_unicast+0x5f0/0x5f0 [ 61.202946] ? selinux_socket_sendmsg+0x31/0x40 [ 61.207597] ? security_socket_sendmsg+0x6a/0xa0 [ 61.212342] ? netlink_unicast+0x5f0/0x5f0 [ 61.216572] sock_sendmsg+0xb5/0xf0 [ 61.220197] ___sys_sendmsg+0x625/0x920 [ 61.224161] ? trace_hardirqs_off+0x10/0x10 [ 61.228465] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 61.233206] ? find_held_lock+0x36/0x1d0 [ 61.237262] ? lock_downgrade+0x7f0/0x7f0 [ 61.241414] ? __fget+0x1ca/0x2f0 [ 61.244866] ? __fget_light+0x166/0x200 [ 61.248818] ? __fdget+0xe/0x10 [ 61.252089] ? sockfd_lookup_light+0x1c/0x150 [ 61.256578] __sys_sendmsg+0xc1/0x140 [ 61.260368] ? SyS_shutdown+0x180/0x180 [ 61.264330] ? __sb_end_write+0xa4/0xd0 [ 61.268292] ? mutex_unlock+0xd/0x10 [ 61.272005] ? do_syscall_64+0x4c/0x5b0 [ 61.275972] ? __sys_sendmsg+0x140/0x140 [ 61.280039] SyS_sendmsg+0xd/0x20 [ 61.283489] do_syscall_64+0x1c7/0x5b0 [ 61.287364] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 61.292200] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.297380] RIP: 0033:0x459ef9 [ 61.300553] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 61.308251] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 61.315512] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 61.322771] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 61.330033] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 61.337301] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 61.346857] batman_adv: batadv0: Adding interface: team0 [ 61.352369] 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. [ 61.377026] batman_adv: batadv0: Interface activated: team0 [ 61.383286] FAULT_INJECTION: forcing a failure. [ 61.383286] name failslab, interval 1, probability 0, space 0, times 0 [ 61.401980] CPU: 1 PID: 7062 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 61.409791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.419145] Call Trace: [ 61.421756] dump_stack+0xf7/0x13b [ 61.425300] should_fail.cold.3+0x105/0x14b [ 61.429617] should_failslab+0xba/0xf0 [ 61.433501] kmem_cache_alloc_node+0x287/0x790 [ 61.438078] __alloc_skb+0x92/0x500 [ 61.441700] ? skb_trim+0x160/0x160 [ 61.445320] ? if_nlmsg_size+0x2d9/0x6f0 [ 61.449409] rtmsg_ifinfo_build_skb+0x68/0x120 [ 61.453983] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 61.458812] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 61.463729] rtnetlink_event+0xc2/0x110 [ 61.467692] notifier_call_chain+0xd6/0x150 [ 61.472008] raw_notifier_call_chain+0x11/0x20 [ 61.476594] call_netdevice_notifiers_info+0x4b/0x60 [ 61.481698] __netdev_upper_dev_link+0x18e/0x1f0 [ 61.486448] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 61.491202] netdev_master_upper_dev_link+0x14/0x20 [ 61.496204] batadv_hardif_enable_interface+0x1af/0x990 [ 61.501685] batadv_softif_slave_add+0x82/0xe0 [ 61.506256] do_set_master+0x163/0x1f0 [ 61.510206] do_setlink+0x9dd/0x2c50 [ 61.513931] ? find_held_lock+0x36/0x1d0 [ 61.517994] ? rtnl_register+0x20/0x20 [ 61.521878] ? load_balance+0xb38/0x2190 [ 61.525936] ? lock_downgrade+0x7f0/0x7f0 [ 61.530078] ? lock_pin_lock+0x340/0x340 [ 61.534133] ? __lock_acquire+0x6a4/0x4500 [ 61.538353] ? trace_hardirqs_off+0x10/0x10 [ 61.542665] ? __lock_is_held+0xb5/0x140 [ 61.546722] ? trace_hardirqs_off+0x10/0x10 [ 61.551037] rtnl_newlink+0xe0c/0x1390 [ 61.554916] ? rtnl_link_unregister+0x270/0x270 [ 61.559571] ? finish_task_switch+0x178/0x650 [ 61.564053] ? finish_task_switch+0x14d/0x650 [ 61.568534] ? find_held_lock+0x36/0x1d0 [ 61.572581] ? __mutex_lock+0x8b7/0x14c0 [ 61.576640] ? lock_downgrade+0x7f0/0x7f0 [ 61.580808] ? do_raw_spin_unlock+0x16a/0x250 [ 61.585316] rtnetlink_rcv_msg+0x34f/0x9d0 [ 61.589548] ? rtnl_bridge_getlink+0x760/0x760 [ 61.594147] ? find_held_lock+0x36/0x1d0 [ 61.598208] netlink_rcv_skb+0x133/0x370 [ 61.602261] ? rtnl_bridge_getlink+0x760/0x760 [ 61.606837] ? netlink_ack+0xa00/0xa00 [ 61.610776] ? netlink_deliver_tap+0x8e/0x920 [ 61.615265] rtnetlink_rcv+0x10/0x20 [ 61.618962] netlink_unicast+0x40d/0x5f0 [ 61.623007] ? netlink_attachskb+0x6e0/0x6e0 [ 61.627401] netlink_sendmsg+0x730/0xbd0 [ 61.632032] ? netlink_unicast+0x5f0/0x5f0 [ 61.636260] ? selinux_socket_sendmsg+0x31/0x40 [ 61.640920] ? security_socket_sendmsg+0x6a/0xa0 [ 61.645703] ? netlink_unicast+0x5f0/0x5f0 [ 61.649924] sock_sendmsg+0xb5/0xf0 [ 61.653535] ___sys_sendmsg+0x625/0x920 [ 61.657544] ? trace_hardirqs_off+0x10/0x10 [ 61.661858] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 61.666610] ? find_held_lock+0x36/0x1d0 [ 61.670663] ? lock_downgrade+0x7f0/0x7f0 [ 61.674799] ? __fget+0x1ca/0x2f0 [ 61.678241] ? __fget_light+0x166/0x200 [ 61.682248] ? __fdget+0xe/0x10 [ 61.685532] ? sockfd_lookup_light+0x1c/0x150 [ 61.690024] __sys_sendmsg+0xc1/0x140 [ 61.693861] ? SyS_shutdown+0x180/0x180 [ 61.697875] ? __sb_end_write+0xa4/0xd0 [ 61.701847] ? mutex_unlock+0xd/0x10 [ 61.705609] ? do_syscall_64+0x4c/0x5b0 [ 61.709580] ? __sys_sendmsg+0x140/0x140 [ 61.713634] SyS_sendmsg+0xd/0x20 [ 61.717081] do_syscall_64+0x1c7/0x5b0 [ 61.721029] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 61.725860] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.731031] RIP: 0033:0x459ef9 [ 61.734208] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 61.741900] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 61.749188] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 61.756455] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 61.763709] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 61.771013] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 61.784822] batman_adv: batadv0: Adding interface: bridge0 2020/02/11 23:04:30 executed programs: 56 [ 61.790657] 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. [ 61.815778] batman_adv: batadv0: Interface activated: bridge0 [ 61.823720] device bridge_slave_1 left promiscuous mode [ 61.837800] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.844250] FAULT_INJECTION: forcing a failure. [ 61.844250] name failslab, interval 1, probability 0, space 0, times 0 [ 61.855479] CPU: 0 PID: 7069 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 61.863282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.872634] Call Trace: [ 61.875234] dump_stack+0xf7/0x13b [ 61.878779] should_fail.cold.3+0x105/0x14b [ 61.883111] should_failslab+0xba/0xf0 [ 61.887098] kmem_cache_alloc_node+0x56/0x790 [ 61.891598] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 61.896711] __alloc_skb+0x92/0x500 [ 61.900342] ? skb_trim+0x160/0x160 [ 61.903968] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 61.909156] ? __lock_is_held+0xb5/0x140 [ 61.913216] fdb_notify+0x88/0x130 [ 61.916761] fdb_delete+0x129/0x3a0 [ 61.920389] br_fdb_delete_by_port+0x163/0x1d0 [ 61.924981] br_stp_disable_port+0xeb/0x150 [ 61.929342] del_nbp+0x119/0x8b0 [ 61.932698] ? trace_hardirqs_on+0x10/0x10 [ 61.936928] br_del_if+0xc7/0x470 [ 61.940381] br_del_slave+0x10/0x20 [ 61.944003] do_set_master+0xb6/0x1f0 [ 61.947803] do_setlink+0x9dd/0x2c50 [ 61.951504] ? is_bpf_text_address+0x60/0xe0 [ 61.955906] ? rtnl_register+0x20/0x20 [ 61.959786] ? __lock_acquire+0x6a4/0x4500 [ 61.964018] ? __lock_acquire+0x6a4/0x4500 [ 61.968249] ? trace_hardirqs_on+0x10/0x10 [ 61.972484] ? trace_hardirqs_on+0x10/0x10 [ 61.976715] ? trace_hardirqs_off+0x10/0x10 [ 61.981026] ? find_held_lock+0x36/0x1d0 [ 61.985080] ? find_held_lock+0x36/0x1d0 [ 61.989142] rtnl_newlink+0xe0c/0x1390 [ 61.993028] ? __this_cpu_preempt_check+0x13/0x20 [ 61.997855] ? do_raw_spin_unlock+0x16a/0x250 [ 62.002347] ? memset+0x31/0x40 [ 62.005623] ? rtnl_newlink+0x6d0/0x1390 [ 62.009673] ? rtnl_link_unregister+0x270/0x270 [ 62.014327] ? finish_task_switch+0x448/0x650 [ 62.018809] ? find_held_lock+0x36/0x1d0 [ 62.022898] ? __mutex_lock+0x8b7/0x14c0 [ 62.026955] ? lock_downgrade+0x7f0/0x7f0 [ 62.031098] ? do_raw_spin_unlock+0x16a/0x250 [ 62.035618] rtnetlink_rcv_msg+0x34f/0x9d0 [ 62.039849] ? rtnl_bridge_getlink+0x760/0x760 [ 62.044417] ? find_held_lock+0x36/0x1d0 [ 62.048469] netlink_rcv_skb+0x133/0x370 [ 62.052524] ? rtnl_bridge_getlink+0x760/0x760 [ 62.057106] ? netlink_ack+0xa00/0xa00 [ 62.060984] ? netlink_deliver_tap+0x8e/0x920 [ 62.065470] rtnetlink_rcv+0x10/0x20 [ 62.069169] netlink_unicast+0x40d/0x5f0 [ 62.073223] ? netlink_attachskb+0x6e0/0x6e0 [ 62.077616] netlink_sendmsg+0x730/0xbd0 [ 62.081666] ? netlink_unicast+0x5f0/0x5f0 [ 62.085909] ? selinux_socket_sendmsg+0x31/0x40 [ 62.090597] ? security_socket_sendmsg+0x6a/0xa0 [ 62.095339] ? netlink_unicast+0x5f0/0x5f0 [ 62.099564] sock_sendmsg+0xb5/0xf0 [ 62.103185] ___sys_sendmsg+0x625/0x920 [ 62.107152] ? trace_hardirqs_off+0x10/0x10 [ 62.111468] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 62.116222] ? find_held_lock+0x36/0x1d0 [ 62.120281] ? lock_downgrade+0x7f0/0x7f0 [ 62.124440] ? __fget+0x1ca/0x2f0 [ 62.127883] ? __fget_light+0x166/0x200 [ 62.131839] ? __fdget+0xe/0x10 [ 62.135098] ? sockfd_lookup_light+0x1c/0x150 [ 62.139573] __sys_sendmsg+0xc1/0x140 [ 62.143365] ? SyS_shutdown+0x180/0x180 [ 62.147329] ? __sb_end_write+0xa4/0xd0 [ 62.151293] ? mutex_unlock+0xd/0x10 [ 62.155016] ? do_syscall_64+0x4c/0x5b0 [ 62.158983] ? __sys_sendmsg+0x140/0x140 [ 62.163035] SyS_sendmsg+0xd/0x20 [ 62.166478] do_syscall_64+0x1c7/0x5b0 [ 62.170342] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.175176] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 62.180363] RIP: 0033:0x459ef9 [ 62.183546] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 62.191241] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 62.198493] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 62.205749] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 62.213141] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 62.220407] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 62.261775] batman_adv: batadv0: Adding interface: bridge_slave_1 [ 62.268146] batman_adv: batadv0: The MTU of interface bridge_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. [ 62.293464] batman_adv: batadv0: Interface activated: bridge_slave_1 [ 62.316551] FAULT_INJECTION: forcing a failure. [ 62.316551] name failslab, interval 1, probability 0, space 0, times 0 [ 62.357672] CPU: 0 PID: 7084 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 62.365501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.374860] Call Trace: [ 62.377460] dump_stack+0xf7/0x13b [ 62.381016] should_fail.cold.3+0x105/0x14b [ 62.385347] should_failslab+0xba/0xf0 [ 62.389250] kmem_cache_alloc+0x2cf/0x790 [ 62.393392] ? memcpy+0x45/0x50 [ 62.396653] ? kstrdup+0x42/0x60 [ 62.400082] __kernfs_new_node+0x63/0x470 [ 62.404258] ? lock_downgrade+0x7f0/0x7f0 [ 62.408392] kernfs_new_node+0x5e/0xe0 [ 62.412263] kernfs_create_link+0x25/0x130 [ 62.416481] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 62.421663] sysfs_create_link+0x43/0xb0 [ 62.425719] netdev_adjacent_sysfs_add+0x94/0xb0 [ 62.431101] ? napi_disable+0x80/0x80 [ 62.434898] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 62.440083] __netdev_upper_dev_link+0x174/0x1f0 [ 62.444831] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 62.449571] netdev_master_upper_dev_link+0x14/0x20 [ 62.454569] batadv_hardif_enable_interface+0x1af/0x990 [ 62.459912] batadv_softif_slave_add+0x82/0xe0 [ 62.464480] do_set_master+0x163/0x1f0 [ 62.468366] do_setlink+0x9dd/0x2c50 [ 62.472065] ? find_held_lock+0x36/0x1d0 [ 62.476121] ? rtnl_register+0x20/0x20 [ 62.480029] ? load_balance+0x9c5/0x2190 [ 62.484125] ? lock_downgrade+0x7f0/0x7f0 [ 62.488256] ? lock_pin_lock+0x340/0x340 [ 62.492304] ? __lock_acquire+0x6a4/0x4500 [ 62.496526] ? trace_hardirqs_off+0x10/0x10 [ 62.500843] rtnl_newlink+0xe0c/0x1390 [ 62.504736] ? rtnl_link_unregister+0x270/0x270 [ 62.509405] ? finish_task_switch+0x178/0x650 [ 62.513886] ? finish_task_switch+0x14d/0x650 [ 62.518368] ? find_held_lock+0x36/0x1d0 [ 62.522425] ? __mutex_lock+0x8b7/0x14c0 [ 62.526473] ? lock_downgrade+0x7f0/0x7f0 [ 62.530607] ? do_raw_spin_unlock+0x16a/0x250 [ 62.535105] rtnetlink_rcv_msg+0x34f/0x9d0 [ 62.539332] ? rtnl_bridge_getlink+0x760/0x760 [ 62.543905] ? find_held_lock+0x36/0x1d0 [ 62.547947] netlink_rcv_skb+0x133/0x370 [ 62.552011] ? rtnl_bridge_getlink+0x760/0x760 [ 62.556586] ? netlink_ack+0xa00/0xa00 [ 62.560466] ? netlink_deliver_tap+0x8e/0x920 [ 62.564956] rtnetlink_rcv+0x10/0x20 [ 62.568657] netlink_unicast+0x40d/0x5f0 [ 62.572702] ? netlink_attachskb+0x6e0/0x6e0 [ 62.577093] netlink_sendmsg+0x730/0xbd0 [ 62.581140] ? netlink_unicast+0x5f0/0x5f0 [ 62.585363] ? selinux_socket_sendmsg+0x31/0x40 [ 62.590018] ? security_socket_sendmsg+0x6a/0xa0 [ 62.594762] ? netlink_unicast+0x5f0/0x5f0 [ 62.598976] sock_sendmsg+0xb5/0xf0 [ 62.602593] ___sys_sendmsg+0x625/0x920 [ 62.606553] ? trace_hardirqs_off+0x10/0x10 [ 62.610855] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 62.615590] ? find_held_lock+0x36/0x1d0 [ 62.619633] ? lock_downgrade+0x7f0/0x7f0 [ 62.623762] ? __fget+0x1ca/0x2f0 [ 62.627207] ? __fget_light+0x166/0x200 [ 62.631161] ? __fdget+0xe/0x10 [ 62.634418] ? sockfd_lookup_light+0x1c/0x150 [ 62.638893] __sys_sendmsg+0xc1/0x140 [ 62.642676] ? SyS_shutdown+0x180/0x180 [ 62.646638] ? __sb_end_write+0xa4/0xd0 [ 62.650598] ? mutex_unlock+0xd/0x10 [ 62.654303] ? do_syscall_64+0x4c/0x5b0 [ 62.658259] ? __sys_sendmsg+0x140/0x140 [ 62.662302] SyS_sendmsg+0xd/0x20 [ 62.665746] do_syscall_64+0x1c7/0x5b0 [ 62.669633] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.674457] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 62.679631] RIP: 0033:0x459ef9 [ 62.682808] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 62.690553] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 62.697816] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 62.705068] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 62.712370] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 62.719668] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 62.731667] FAULT_INJECTION: forcing a failure. [ 62.731667] name failslab, interval 1, probability 0, space 0, times 0 [ 62.753233] CPU: 1 PID: 7099 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 62.761050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.770402] Call Trace: [ 62.772983] dump_stack+0xf7/0x13b [ 62.776503] should_fail.cold.3+0x105/0x14b [ 62.780805] should_failslab+0xba/0xf0 [ 62.784669] kmem_cache_alloc_node_trace+0x5a/0x780 [ 62.789666] __kmalloc_node_track_caller+0x3c/0x70 [ 62.794575] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 62.799371] pskb_expand_head+0x106/0xc20 [ 62.803499] ? kasan_kmalloc+0xc7/0xe0 [ 62.807368] netlink_trim+0x18f/0x200 [ 62.811145] netlink_broadcast_filtered+0x57/0x8f0 [ 62.816055] ? __alloc_skb+0x308/0x500 [ 62.819937] nlmsg_notify+0x6b/0x120 [ 62.823642] rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 62.828471] rtnetlink_event+0xc2/0x110 [ 62.832435] notifier_call_chain+0xd6/0x150 [ 62.836754] raw_notifier_call_chain+0x11/0x20 [ 62.841320] call_netdevice_notifiers_info+0x4b/0x60 [ 62.846489] netdev_upper_dev_unlink+0xab/0xe0 [ 62.851064] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30 [ 62.857110] bond_upper_dev_unlink.isra.45+0x33/0xc0 [ 62.862192] __bond_release_one+0x2c2/0x1370 [ 62.866628] ? bond_enslave+0x4a80/0x4a80 [ 62.870761] ? __lock_acquire+0x6a4/0x4500 [ 62.875096] bond_release+0xd/0x10 [ 62.878614] do_set_master+0xb6/0x1f0 [ 62.882408] do_setlink+0x9dd/0x2c50 [ 62.886113] ? rtnl_register+0x20/0x20 [ 62.889977] ? trace_hardirqs_off+0x10/0x10 [ 62.894287] ? __lock_acquire+0x6a4/0x4500 [ 62.898509] ? trace_hardirqs_on+0x10/0x10 [ 62.902726] ? __lock_acquire+0x6a4/0x4500 [ 62.906935] ? trace_hardirqs_off+0x10/0x10 [ 62.911238] ? trace_hardirqs_off+0x10/0x10 [ 62.915542] rtnl_newlink+0xe0c/0x1390 [ 62.919406] ? memset+0x31/0x40 [ 62.922663] ? rtnl_newlink+0x6d0/0x1390 [ 62.926711] ? rtnl_link_unregister+0x270/0x270 [ 62.931358] ? finish_task_switch+0x178/0x650 [ 62.935841] ? finish_task_switch+0x14d/0x650 [ 62.940409] ? find_held_lock+0x36/0x1d0 [ 62.944459] ? __mutex_lock+0x8b7/0x14c0 [ 62.948504] ? lock_downgrade+0x7f0/0x7f0 [ 62.952671] ? do_raw_spin_unlock+0x16a/0x250 [ 62.957163] rtnetlink_rcv_msg+0x34f/0x9d0 [ 62.961393] ? rtnl_bridge_getlink+0x760/0x760 [ 62.965952] ? find_held_lock+0x36/0x1d0 [ 62.969994] netlink_rcv_skb+0x133/0x370 [ 62.974041] ? rtnl_bridge_getlink+0x760/0x760 [ 62.978612] ? netlink_ack+0xa00/0xa00 [ 62.982485] ? netlink_deliver_tap+0x8e/0x920 [ 62.986960] rtnetlink_rcv+0x10/0x20 [ 62.990652] netlink_unicast+0x40d/0x5f0 [ 62.994692] ? netlink_attachskb+0x6e0/0x6e0 [ 62.999083] netlink_sendmsg+0x730/0xbd0 [ 63.003135] ? netlink_unicast+0x5f0/0x5f0 [ 63.007352] ? selinux_socket_sendmsg+0x31/0x40 [ 63.012006] ? security_socket_sendmsg+0x6a/0xa0 [ 63.016760] ? netlink_unicast+0x5f0/0x5f0 [ 63.020972] sock_sendmsg+0xb5/0xf0 [ 63.024575] ___sys_sendmsg+0x625/0x920 [ 63.028529] ? trace_hardirqs_off+0x10/0x10 [ 63.032839] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 63.037578] ? find_held_lock+0x36/0x1d0 [ 63.041628] ? lock_downgrade+0x7f0/0x7f0 [ 63.045766] ? __fget+0x1ca/0x2f0 [ 63.049220] ? __fget_light+0x166/0x200 [ 63.053179] ? __fdget+0xe/0x10 [ 63.056433] ? sockfd_lookup_light+0x1c/0x150 [ 63.060905] __sys_sendmsg+0xc1/0x140 [ 63.064682] ? SyS_shutdown+0x180/0x180 [ 63.068634] ? __sb_end_write+0xa4/0xd0 [ 63.072593] ? mutex_unlock+0xd/0x10 [ 63.076294] ? do_syscall_64+0x4c/0x5b0 [ 63.080246] ? __sys_sendmsg+0x140/0x140 [ 63.084298] SyS_sendmsg+0xd/0x20 [ 63.087742] do_syscall_64+0x1c7/0x5b0 [ 63.091673] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 63.096509] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 63.101689] RIP: 0033:0x459ef9 [ 63.104861] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.112556] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 63.119803] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 63.127056] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 63.134310] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 63.141558] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 63.153125] bond0: Releasing backup interface bond_slave_0 [ 63.202642] batman_adv: batadv0: Adding interface: bond_slave_0 [ 63.208774] batman_adv: batadv0: The MTU of interface bond_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. [ 63.233998] batman_adv: batadv0: Not using interface bond_slave_0 (retrying later): interface not active [ 63.246168] FAULT_INJECTION: forcing a failure. [ 63.246168] name failslab, interval 1, probability 0, space 0, times 0 [ 63.280501] CPU: 0 PID: 7105 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 63.288328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.297679] Call Trace: [ 63.300281] dump_stack+0xf7/0x13b [ 63.303834] should_fail.cold.3+0x105/0x14b [ 63.308167] should_failslab+0xba/0xf0 [ 63.312054] kmem_cache_alloc_node+0x287/0x790 [ 63.316640] __alloc_skb+0x92/0x500 [ 63.320266] ? skb_trim+0x160/0x160 [ 63.323894] ? if_nlmsg_size+0x2d9/0x6f0 [ 63.327956] rtmsg_ifinfo_build_skb+0x68/0x120 [ 63.332536] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 63.337375] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 63.342296] rtnetlink_event+0xc2/0x110 [ 63.346261] notifier_call_chain+0xd6/0x150 [ 63.350580] raw_notifier_call_chain+0x11/0x20 [ 63.355159] call_netdevice_notifiers_info+0x4b/0x60 [ 63.360396] __netdev_upper_dev_link+0x18e/0x1f0 [ 63.365138] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 63.369874] netdev_master_upper_dev_link+0x14/0x20 [ 63.374877] batadv_hardif_enable_interface+0x1af/0x990 [ 63.380235] batadv_softif_slave_add+0x82/0xe0 [ 63.384814] do_set_master+0x163/0x1f0 [ 63.388688] do_setlink+0x9dd/0x2c50 [ 63.392388] ? rtnl_register+0x20/0x20 [ 63.396254] ? trace_hardirqs_on+0x10/0x10 [ 63.400483] ? trace_hardirqs_off+0x10/0x10 [ 63.404796] ? find_held_lock+0x36/0x1d0 [ 63.408842] ? find_held_lock+0x36/0x1d0 [ 63.412896] ? free_one_page+0x9c4/0x1050 [ 63.417036] ? lock_downgrade+0x7f0/0x7f0 [ 63.421173] ? __this_cpu_preempt_check+0x13/0x20 [ 63.426010] ? do_raw_spin_unlock+0x16a/0x250 [ 63.430506] rtnl_newlink+0xe0c/0x1390 [ 63.434389] ? rtnl_link_unregister+0x270/0x270 [ 63.439039] ? finish_task_switch+0x448/0x650 [ 63.443521] ? find_held_lock+0x36/0x1d0 [ 63.447569] ? __mutex_lock+0x8b7/0x14c0 [ 63.451619] ? lock_downgrade+0x7f0/0x7f0 [ 63.455755] ? do_raw_spin_unlock+0x16a/0x250 [ 63.460267] rtnetlink_rcv_msg+0x34f/0x9d0 [ 63.464490] ? rtnl_bridge_getlink+0x760/0x760 [ 63.469067] ? find_held_lock+0x36/0x1d0 [ 63.473120] netlink_rcv_skb+0x133/0x370 [ 63.477164] ? rtnl_bridge_getlink+0x760/0x760 [ 63.481747] ? netlink_ack+0xa00/0xa00 [ 63.485619] ? netlink_deliver_tap+0x8e/0x920 [ 63.490100] rtnetlink_rcv+0x10/0x20 [ 63.493800] netlink_unicast+0x40d/0x5f0 [ 63.497839] ? netlink_attachskb+0x6e0/0x6e0 [ 63.502231] netlink_sendmsg+0x730/0xbd0 [ 63.506272] ? netlink_unicast+0x5f0/0x5f0 [ 63.510492] ? selinux_socket_sendmsg+0x31/0x40 [ 63.515152] ? security_socket_sendmsg+0x6a/0xa0 [ 63.520025] ? netlink_unicast+0x5f0/0x5f0 [ 63.524245] sock_sendmsg+0xb5/0xf0 [ 63.527853] ___sys_sendmsg+0x625/0x920 [ 63.531819] ? trace_hardirqs_off+0x10/0x10 [ 63.536142] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 63.540888] ? find_held_lock+0x36/0x1d0 [ 63.544938] ? lock_downgrade+0x7f0/0x7f0 [ 63.549070] ? __fget+0x1ca/0x2f0 [ 63.552508] ? __fget_light+0x166/0x200 [ 63.556461] ? __fdget+0xe/0x10 [ 63.559724] ? sockfd_lookup_light+0x1c/0x150 [ 63.564198] __sys_sendmsg+0xc1/0x140 [ 63.567977] ? SyS_shutdown+0x180/0x180 [ 63.572029] ? __sb_end_write+0xa4/0xd0 [ 63.576125] ? mutex_unlock+0xd/0x10 [ 63.579829] ? do_syscall_64+0x4c/0x5b0 [ 63.583784] ? __sys_sendmsg+0x140/0x140 [ 63.587825] SyS_sendmsg+0xd/0x20 [ 63.591267] do_syscall_64+0x1c7/0x5b0 [ 63.595140] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 63.599962] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 63.605133] RIP: 0033:0x459ef9 [ 63.608305] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.615999] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 63.623258] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 63.630521] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 63.637779] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 63.645028] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 63.653562] batman_adv: batadv0: Adding interface: dummy0 [ 63.659165] batman_adv: batadv0: The MTU of interface dummy0 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. [ 63.684584] batman_adv: batadv0: Interface activated: dummy0 [ 63.691942] FAULT_INJECTION: forcing a failure. [ 63.691942] name failslab, interval 1, probability 0, space 0, times 0 [ 63.722110] CPU: 0 PID: 7107 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 63.729925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.739261] Call Trace: [ 63.741837] dump_stack+0xf7/0x13b [ 63.745367] should_fail.cold.3+0x105/0x14b [ 63.749677] should_failslab+0xba/0xf0 [ 63.753553] kmem_cache_alloc_node+0x287/0x790 [ 63.758116] __alloc_skb+0x92/0x500 [ 63.761733] ? skb_trim+0x160/0x160 [ 63.765350] ? if_nlmsg_size+0x2d9/0x6f0 [ 63.769391] rtmsg_ifinfo_build_skb+0x68/0x120 [ 63.773954] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 63.778807] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 63.783719] rtnetlink_event+0xc2/0x110 [ 63.787673] notifier_call_chain+0xd6/0x150 [ 63.791977] raw_notifier_call_chain+0x11/0x20 [ 63.796557] call_netdevice_notifiers_info+0x4b/0x60 [ 63.801644] __netdev_upper_dev_link+0x18e/0x1f0 [ 63.806387] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 63.811216] netdev_master_upper_dev_link+0x14/0x20 [ 63.816212] batadv_hardif_enable_interface+0x1af/0x990 [ 63.821567] batadv_softif_slave_add+0x82/0xe0 [ 63.826142] do_set_master+0x163/0x1f0 [ 63.830679] do_setlink+0x9dd/0x2c50 [ 63.834383] ? find_held_lock+0x36/0x1d0 [ 63.838424] ? rtnl_register+0x20/0x20 [ 63.842295] ? load_balance+0xb38/0x2190 [ 63.846342] ? lock_downgrade+0x7f0/0x7f0 [ 63.850551] ? lock_pin_lock+0x340/0x340 [ 63.854605] ? __lock_acquire+0x6a4/0x4500 [ 63.858841] ? trace_hardirqs_off+0x10/0x10 [ 63.863153] ? __lock_is_held+0xb5/0x140 [ 63.867212] ? trace_hardirqs_off+0x10/0x10 [ 63.871517] rtnl_newlink+0xe0c/0x1390 [ 63.875387] ? rtnl_link_unregister+0x270/0x270 [ 63.880033] ? finish_task_switch+0x178/0x650 [ 63.884512] ? finish_task_switch+0x14d/0x650 [ 63.888989] ? find_held_lock+0x36/0x1d0 [ 63.893029] ? __mutex_lock+0x8b7/0x14c0 [ 63.897074] ? lock_downgrade+0x7f0/0x7f0 [ 63.901217] ? do_raw_spin_unlock+0x16a/0x250 [ 63.905712] rtnetlink_rcv_msg+0x34f/0x9d0 [ 63.909930] ? rtnl_bridge_getlink+0x760/0x760 [ 63.914495] ? find_held_lock+0x36/0x1d0 [ 63.918538] netlink_rcv_skb+0x133/0x370 [ 63.922586] ? rtnl_bridge_getlink+0x760/0x760 [ 63.927160] ? netlink_ack+0xa00/0xa00 [ 63.931034] ? netlink_deliver_tap+0x8e/0x920 [ 63.935517] rtnetlink_rcv+0x10/0x20 [ 63.939209] netlink_unicast+0x40d/0x5f0 [ 63.943257] ? netlink_attachskb+0x6e0/0x6e0 [ 63.947659] netlink_sendmsg+0x730/0xbd0 [ 63.951714] ? netlink_unicast+0x5f0/0x5f0 [ 63.955938] ? selinux_socket_sendmsg+0x31/0x40 [ 63.960593] ? security_socket_sendmsg+0x6a/0xa0 [ 63.965337] ? netlink_unicast+0x5f0/0x5f0 [ 63.969557] sock_sendmsg+0xb5/0xf0 [ 63.973167] ___sys_sendmsg+0x625/0x920 [ 63.977121] ? trace_hardirqs_off+0x10/0x10 [ 63.981428] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 63.986171] ? find_held_lock+0x36/0x1d0 [ 63.990220] ? lock_downgrade+0x7f0/0x7f0 [ 63.994350] ? __fget+0x1ca/0x2f0 [ 63.997794] ? __fget_light+0x166/0x200 [ 64.001767] ? __fdget+0xe/0x10 [ 64.005031] ? sockfd_lookup_light+0x1c/0x150 [ 64.009514] __sys_sendmsg+0xc1/0x140 [ 64.013299] ? SyS_shutdown+0x180/0x180 [ 64.017253] ? __sb_end_write+0xa4/0xd0 [ 64.021215] ? mutex_unlock+0xd/0x10 [ 64.024918] ? do_syscall_64+0x4c/0x5b0 [ 64.028870] ? __sys_sendmsg+0x140/0x140 [ 64.032916] SyS_sendmsg+0xd/0x20 [ 64.036348] do_syscall_64+0x1c7/0x5b0 [ 64.040218] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 64.045050] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 64.050221] RIP: 0033:0x459ef9 [ 64.053449] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.061149] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 64.068410] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 64.075670] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 64.082925] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 64.090183] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 64.100293] batman_adv: batadv0: Adding interface: veth0 [ 64.105912] 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. [ 64.132198] batman_adv: batadv0: Interface activated: veth0 [ 64.141345] FAULT_INJECTION: forcing a failure. [ 64.141345] name failslab, interval 1, probability 0, space 0, times 0 [ 64.168091] CPU: 1 PID: 7116 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 64.175917] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.185267] Call Trace: [ 64.187855] dump_stack+0xf7/0x13b [ 64.191399] should_fail.cold.3+0x105/0x14b [ 64.195723] should_failslab+0xba/0xf0 [ 64.199609] kmem_cache_alloc_trace+0x2ea/0x7a0 [ 64.204336] ? __wake_up+0xe/0x10 [ 64.207778] ? netlink_broadcast_filtered+0x297/0x8f0 [ 64.212961] ? __alloc_skb+0x308/0x500 [ 64.216845] netdevice_event+0x16b/0x6d0 [ 64.220898] ? update_gid_event_work_handler+0xb0/0xb0 [ 64.226152] ? add_netdev_upper_ips+0x20/0x20 [ 64.231249] ? inetaddr_event+0x190/0x190 [ 64.235380] ? _add_netdev_ips+0x30/0x30 [ 64.239418] ? is_eth_port_of_netdev.part.7+0x1e0/0x1e0 [ 64.244818] ? rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 64.249826] notifier_call_chain+0xd6/0x150 [ 64.254138] raw_notifier_call_chain+0x11/0x20 [ 64.258696] call_netdevice_notifiers_info+0x4b/0x60 [ 64.263781] netdev_upper_dev_unlink+0xab/0xe0 [ 64.268369] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30 [ 64.274432] bond_upper_dev_unlink.isra.45+0x33/0xc0 [ 64.279525] __bond_release_one+0x2c2/0x1370 [ 64.283921] ? trace_hardirqs_on+0x10/0x10 [ 64.288216] ? bond_enslave+0x4a80/0x4a80 [ 64.292349] ? trace_hardirqs_off+0x10/0x10 [ 64.296660] ? find_held_lock+0x36/0x1d0 [ 64.300709] bond_release+0xd/0x10 [ 64.304267] do_set_master+0xb6/0x1f0 [ 64.308056] do_setlink+0x9dd/0x2c50 [ 64.311778] ? __lock_acquire+0x6a4/0x4500 [ 64.315998] ? rtnl_register+0x20/0x20 [ 64.319864] ? trace_hardirqs_on+0x10/0x10 [ 64.324082] ? trace_hardirqs_on+0x10/0x10 [ 64.328309] ? trace_hardirqs_off+0x10/0x10 [ 64.332615] ? find_held_lock+0x36/0x1d0 [ 64.336660] ? find_held_lock+0x36/0x1d0 [ 64.340705] ? free_one_page+0x9c4/0x1050 [ 64.344835] ? lock_downgrade+0x7f0/0x7f0 [ 64.348973] ? __this_cpu_preempt_check+0x13/0x20 [ 64.353794] ? do_raw_spin_unlock+0x16a/0x250 [ 64.358280] rtnl_newlink+0xe0c/0x1390 [ 64.362149] ? memset+0x31/0x40 [ 64.365407] ? rtnl_newlink+0x6d0/0x1390 [ 64.369460] ? rtnl_link_unregister+0x270/0x270 [ 64.374113] ? finish_task_switch+0x448/0x650 [ 64.378596] ? find_held_lock+0x36/0x1d0 [ 64.382648] ? __mutex_lock+0x8b7/0x14c0 [ 64.386697] ? lock_downgrade+0x7f0/0x7f0 [ 64.390826] ? do_raw_spin_unlock+0x16a/0x250 [ 64.395318] rtnetlink_rcv_msg+0x34f/0x9d0 [ 64.399534] ? rtnl_bridge_getlink+0x760/0x760 [ 64.404095] ? find_held_lock+0x36/0x1d0 [ 64.408141] netlink_rcv_skb+0x133/0x370 [ 64.412184] ? rtnl_bridge_getlink+0x760/0x760 [ 64.416742] ? netlink_ack+0xa00/0xa00 [ 64.420606] ? netlink_deliver_tap+0x8e/0x920 [ 64.425079] rtnetlink_rcv+0x10/0x20 [ 64.428782] netlink_unicast+0x40d/0x5f0 [ 64.432839] ? netlink_attachskb+0x6e0/0x6e0 [ 64.437254] netlink_sendmsg+0x730/0xbd0 [ 64.441305] ? netlink_unicast+0x5f0/0x5f0 [ 64.445522] ? selinux_socket_sendmsg+0x31/0x40 [ 64.450174] ? security_socket_sendmsg+0x6a/0xa0 [ 64.454916] ? netlink_unicast+0x5f0/0x5f0 [ 64.459140] sock_sendmsg+0xb5/0xf0 [ 64.462754] ___sys_sendmsg+0x625/0x920 [ 64.466714] ? trace_hardirqs_off+0x10/0x10 [ 64.471031] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 64.475774] ? find_held_lock+0x36/0x1d0 [ 64.479828] ? lock_downgrade+0x7f0/0x7f0 [ 64.483959] ? __fget+0x1ca/0x2f0 [ 64.487389] ? __fget_light+0x166/0x200 [ 64.491340] ? __fdget+0xe/0x10 [ 64.494600] ? sockfd_lookup_light+0x1c/0x150 [ 64.499085] __sys_sendmsg+0xc1/0x140 [ 64.502861] ? SyS_shutdown+0x180/0x180 [ 64.506813] ? __sb_end_write+0xa4/0xd0 [ 64.510772] ? mutex_unlock+0xd/0x10 [ 64.514476] ? do_syscall_64+0x4c/0x5b0 [ 64.518440] ? __sys_sendmsg+0x140/0x140 [ 64.522488] SyS_sendmsg+0xd/0x20 [ 64.525919] do_syscall_64+0x1c7/0x5b0 [ 64.529784] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 64.534614] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 64.539784] RIP: 0033:0x459ef9 [ 64.542963] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.550653] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 64.557905] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 64.565169] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 64.572430] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 64.579742] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 64.592531] bond0: Releasing backup interface bond_slave_1 [ 64.614168] batman_adv: batadv0: Adding interface: bond_slave_1 [ 64.620398] batman_adv: batadv0: The MTU of interface bond_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. [ 64.646036] batman_adv: batadv0: Not using interface bond_slave_1 (retrying later): interface not active [ 64.655959] FAULT_INJECTION: forcing a failure. [ 64.655959] name failslab, interval 1, probability 0, space 0, times 0 [ 64.674366] CPU: 0 PID: 7117 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 64.682286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.691623] Call Trace: [ 64.694191] dump_stack+0xf7/0x13b [ 64.697712] should_fail.cold.3+0x105/0x14b [ 64.702013] should_failslab+0xba/0xf0 [ 64.705881] kmem_cache_alloc+0x2cf/0x790 [ 64.710017] ? memcpy+0x45/0x50 [ 64.713289] ? kstrdup+0x42/0x60 [ 64.716636] __kernfs_new_node+0x63/0x470 [ 64.720763] ? lock_downgrade+0x7f0/0x7f0 [ 64.724890] kernfs_new_node+0x5e/0xe0 [ 64.728755] kernfs_create_link+0x25/0x130 [ 64.732968] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 64.738139] sysfs_create_link+0x43/0xb0 [ 64.742185] netdev_adjacent_sysfs_add+0x94/0xb0 [ 64.746917] ? napi_disable+0x80/0x80 [ 64.750698] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 64.755926] __netdev_upper_dev_link+0x174/0x1f0 [ 64.760663] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 64.765423] netdev_master_upper_dev_link+0x14/0x20 [ 64.770423] batadv_hardif_enable_interface+0x1af/0x990 [ 64.775866] batadv_softif_slave_add+0x82/0xe0 [ 64.780428] do_set_master+0x163/0x1f0 [ 64.784293] do_setlink+0x9dd/0x2c50 [ 64.787984] ? find_held_lock+0x36/0x1d0 [ 64.792025] ? rtnl_register+0x20/0x20 [ 64.795898] ? load_balance+0xb38/0x2190 [ 64.799944] ? lock_downgrade+0x7f0/0x7f0 [ 64.804067] ? lock_pin_lock+0x340/0x340 [ 64.808118] ? __lock_acquire+0x6a4/0x4500 [ 64.812351] ? trace_hardirqs_off+0x10/0x10 [ 64.816656] ? __lock_is_held+0xb5/0x140 [ 64.820703] ? trace_hardirqs_off+0x10/0x10 [ 64.825010] rtnl_newlink+0xe0c/0x1390 [ 64.828885] ? rtnl_link_unregister+0x270/0x270 [ 64.833535] ? finish_task_switch+0x178/0x650 [ 64.838005] ? finish_task_switch+0x14d/0x650 [ 64.842478] ? find_held_lock+0x36/0x1d0 [ 64.846520] ? __mutex_lock+0x8b7/0x14c0 [ 64.850564] ? lock_downgrade+0x7f0/0x7f0 [ 64.854714] ? do_raw_spin_unlock+0x16a/0x250 [ 64.859208] rtnetlink_rcv_msg+0x34f/0x9d0 [ 64.863464] ? rtnl_bridge_getlink+0x760/0x760 [ 64.868027] ? find_held_lock+0x36/0x1d0 [ 64.872083] netlink_rcv_skb+0x133/0x370 [ 64.876126] ? rtnl_bridge_getlink+0x760/0x760 [ 64.880690] ? netlink_ack+0xa00/0xa00 [ 64.884561] ? netlink_deliver_tap+0x8e/0x920 [ 64.889036] rtnetlink_rcv+0x10/0x20 [ 64.892727] netlink_unicast+0x40d/0x5f0 [ 64.896783] ? netlink_attachskb+0x6e0/0x6e0 [ 64.901170] netlink_sendmsg+0x730/0xbd0 [ 64.905209] ? netlink_unicast+0x5f0/0x5f0 [ 64.909422] ? selinux_socket_sendmsg+0x31/0x40 [ 64.914082] ? security_socket_sendmsg+0x6a/0xa0 [ 64.918814] ? netlink_unicast+0x5f0/0x5f0 [ 64.923025] sock_sendmsg+0xb5/0xf0 [ 64.926630] ___sys_sendmsg+0x625/0x920 [ 64.930584] ? trace_hardirqs_off+0x10/0x10 [ 64.934890] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 64.939625] ? find_held_lock+0x36/0x1d0 [ 64.943667] ? lock_downgrade+0x7f0/0x7f0 [ 64.947846] ? __fget+0x1ca/0x2f0 [ 64.951320] ? __fget_light+0x166/0x200 [ 64.955276] ? __fdget+0xe/0x10 [ 64.958539] ? sockfd_lookup_light+0x1c/0x150 [ 64.963017] __sys_sendmsg+0xc1/0x140 [ 64.966804] ? SyS_shutdown+0x180/0x180 [ 64.970766] ? __sb_end_write+0xa4/0xd0 [ 64.974750] ? mutex_unlock+0xd/0x10 [ 64.978454] ? do_syscall_64+0x4c/0x5b0 [ 64.982430] ? __sys_sendmsg+0x140/0x140 [ 64.986483] SyS_sendmsg+0xd/0x20 [ 64.989926] do_syscall_64+0x1c7/0x5b0 [ 64.993806] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 64.998631] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 65.003801] RIP: 0033:0x459ef9 [ 65.006973] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 65.014659] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 65.021907] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 65.029154] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 65.036405] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 65.043659] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 65.053044] FAULT_INJECTION: forcing a failure. [ 65.053044] name failslab, interval 1, probability 0, space 0, times 0 [ 65.065558] CPU: 0 PID: 7123 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 65.073376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.082730] Call Trace: [ 65.085319] dump_stack+0xf7/0x13b [ 65.088866] should_fail.cold.3+0x105/0x14b [ 65.093186] should_failslab+0xba/0xf0 [ 65.097072] kmem_cache_alloc+0x2cf/0x790 [ 65.101219] ? memcpy+0x45/0x50 [ 65.104496] ? kstrdup+0x42/0x60 [ 65.107865] __kernfs_new_node+0x63/0x470 [ 65.112010] ? lock_downgrade+0x7f0/0x7f0 [ 65.116156] kernfs_new_node+0x5e/0xe0 [ 65.120035] kernfs_create_link+0x25/0x130 [ 65.124258] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 65.129428] sysfs_create_link+0x43/0xb0 [ 65.133476] netdev_adjacent_sysfs_add+0x94/0xb0 [ 65.138218] ? napi_disable+0x80/0x80 [ 65.142009] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 65.147185] __netdev_upper_dev_link+0x174/0x1f0 [ 65.151923] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 65.156668] netdev_master_upper_dev_link+0x14/0x20 [ 65.161666] batadv_hardif_enable_interface+0x1af/0x990 [ 65.167023] batadv_softif_slave_add+0x82/0xe0 [ 65.171591] do_set_master+0x163/0x1f0 [ 65.175551] do_setlink+0x9dd/0x2c50 [ 65.179271] ? rtnl_register+0x20/0x20 [ 65.183251] ? trace_hardirqs_on+0x10/0x10 [ 65.187492] ? trace_hardirqs_off+0x10/0x10 [ 65.191797] ? find_held_lock+0x36/0x1d0 [ 65.195853] ? find_held_lock+0x36/0x1d0 [ 65.199903] ? free_one_page+0x9c4/0x1050 [ 65.204035] ? lock_downgrade+0x7f0/0x7f0 [ 65.208232] ? __this_cpu_preempt_check+0x13/0x20 [ 65.213070] ? do_raw_spin_unlock+0x16a/0x250 [ 65.217569] rtnl_newlink+0xe0c/0x1390 [ 65.221454] ? rtnl_link_unregister+0x270/0x270 [ 65.226131] ? finish_task_switch+0x448/0x650 [ 65.230620] ? find_held_lock+0x36/0x1d0 [ 65.234683] ? __mutex_lock+0x8b7/0x14c0 [ 65.238736] ? lock_downgrade+0x7f0/0x7f0 [ 65.242871] ? do_raw_spin_unlock+0x16a/0x250 [ 65.247381] rtnetlink_rcv_msg+0x34f/0x9d0 [ 65.251610] ? rtnl_bridge_getlink+0x760/0x760 [ 65.256238] ? find_held_lock+0x36/0x1d0 [ 65.260285] netlink_rcv_skb+0x133/0x370 [ 65.264328] ? rtnl_bridge_getlink+0x760/0x760 [ 65.268890] ? netlink_ack+0xa00/0xa00 [ 65.272772] ? netlink_deliver_tap+0x8e/0x920 [ 65.277258] rtnetlink_rcv+0x10/0x20 [ 65.280954] netlink_unicast+0x40d/0x5f0 [ 65.285083] ? netlink_attachskb+0x6e0/0x6e0 [ 65.289488] netlink_sendmsg+0x730/0xbd0 [ 65.293548] ? netlink_unicast+0x5f0/0x5f0 [ 65.297857] ? selinux_socket_sendmsg+0x31/0x40 [ 65.302594] ? security_socket_sendmsg+0x6a/0xa0 [ 65.307328] ? netlink_unicast+0x5f0/0x5f0 [ 65.311548] sock_sendmsg+0xb5/0xf0 [ 65.315162] ___sys_sendmsg+0x625/0x920 [ 65.319113] ? trace_hardirqs_off+0x10/0x10 [ 65.323587] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 65.328322] ? find_held_lock+0x36/0x1d0 [ 65.332377] ? lock_downgrade+0x7f0/0x7f0 [ 65.336512] ? __fget+0x1ca/0x2f0 [ 65.339943] ? __fget_light+0x166/0x200 [ 65.343893] ? __fdget+0xe/0x10 [ 65.347153] ? sockfd_lookup_light+0x1c/0x150 [ 65.351634] __sys_sendmsg+0xc1/0x140 [ 65.355465] ? SyS_shutdown+0x180/0x180 [ 65.359417] ? __sb_end_write+0xa4/0xd0 [ 65.363373] ? mutex_unlock+0xd/0x10 [ 65.367081] ? do_syscall_64+0x4c/0x5b0 [ 65.371041] ? __sys_sendmsg+0x140/0x140 [ 65.375091] SyS_sendmsg+0xd/0x20 [ 65.378522] do_syscall_64+0x1c7/0x5b0 [ 65.382387] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 65.387216] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 65.392393] RIP: 0033:0x459ef9 [ 65.395567] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 65.403256] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 65.410520] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 65.417848] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 65.425199] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 65.432460] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 65.443437] FAULT_INJECTION: forcing a failure. [ 65.443437] name failslab, interval 1, probability 0, space 0, times 0 [ 65.455261] CPU: 0 PID: 7125 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 65.463053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.472407] Call Trace: [ 65.474993] dump_stack+0xf7/0x13b [ 65.478525] should_fail.cold.3+0x105/0x14b [ 65.482840] should_failslab+0xba/0xf0 [ 65.486827] kmem_cache_alloc_node+0x287/0x790 [ 65.491414] __alloc_skb+0x92/0x500 [ 65.495037] ? skb_trim+0x160/0x160 [ 65.498661] ? if_nlmsg_size+0x2d9/0x6f0 [ 65.502706] rtmsg_ifinfo_build_skb+0x68/0x120 [ 65.507277] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 65.512108] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 65.517038] rtnetlink_event+0xc2/0x110 [ 65.521014] notifier_call_chain+0xd6/0x150 [ 65.525325] raw_notifier_call_chain+0x11/0x20 [ 65.529900] call_netdevice_notifiers_info+0x4b/0x60 [ 65.535101] __netdev_upper_dev_link+0x18e/0x1f0 [ 65.539842] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 65.544588] netdev_master_upper_dev_link+0x14/0x20 [ 65.549588] batadv_hardif_enable_interface+0x1af/0x990 [ 65.554942] batadv_softif_slave_add+0x82/0xe0 [ 65.559506] do_set_master+0x163/0x1f0 [ 65.563375] do_setlink+0x9dd/0x2c50 [ 65.567078] ? find_held_lock+0x36/0x1d0 [ 65.571134] ? rtnl_register+0x20/0x20 [ 65.575006] ? load_balance+0xb38/0x2190 [ 65.579063] ? lock_downgrade+0x7f0/0x7f0 [ 65.583192] ? lock_pin_lock+0x340/0x340 [ 65.587235] ? __lock_acquire+0x6a4/0x4500 [ 65.591463] ? trace_hardirqs_off+0x10/0x10 [ 65.595771] ? __lock_is_held+0xb5/0x140 [ 65.599821] ? trace_hardirqs_off+0x10/0x10 [ 65.604130] rtnl_newlink+0xe0c/0x1390 [ 65.608016] ? rtnl_link_unregister+0x270/0x270 [ 65.612677] ? finish_task_switch+0x178/0x650 [ 65.617158] ? finish_task_switch+0x14d/0x650 [ 65.621644] ? find_held_lock+0x36/0x1d0 [ 65.625695] ? __mutex_lock+0x8b7/0x14c0 [ 65.629734] ? lock_downgrade+0x7f0/0x7f0 [ 65.633868] ? do_raw_spin_unlock+0x16a/0x250 [ 65.638363] rtnetlink_rcv_msg+0x34f/0x9d0 [ 65.642583] ? rtnl_bridge_getlink+0x760/0x760 [ 65.647146] ? find_held_lock+0x36/0x1d0 [ 65.651197] netlink_rcv_skb+0x133/0x370 [ 65.655366] ? rtnl_bridge_getlink+0x760/0x760 [ 65.659953] ? netlink_ack+0xa00/0xa00 [ 65.663821] ? netlink_deliver_tap+0x8e/0x920 [ 65.668298] rtnetlink_rcv+0x10/0x20 [ 65.671995] netlink_unicast+0x40d/0x5f0 [ 65.676044] ? netlink_attachskb+0x6e0/0x6e0 [ 65.680437] netlink_sendmsg+0x730/0xbd0 [ 65.684483] ? netlink_unicast+0x5f0/0x5f0 [ 65.688700] ? selinux_socket_sendmsg+0x31/0x40 [ 65.693355] ? security_socket_sendmsg+0x6a/0xa0 [ 65.698101] ? netlink_unicast+0x5f0/0x5f0 [ 65.702314] sock_sendmsg+0xb5/0xf0 [ 65.705918] ___sys_sendmsg+0x625/0x920 [ 65.709873] ? trace_hardirqs_off+0x10/0x10 [ 65.714180] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 65.718924] ? find_held_lock+0x36/0x1d0 [ 65.722977] ? lock_downgrade+0x7f0/0x7f0 [ 65.727114] ? __fget+0x1ca/0x2f0 [ 65.730562] ? __fget_light+0x166/0x200 [ 65.734578] ? __fdget+0xe/0x10 [ 65.737840] ? sockfd_lookup_light+0x1c/0x150 [ 65.742316] __sys_sendmsg+0xc1/0x140 [ 65.746097] ? SyS_shutdown+0x180/0x180 [ 65.750059] ? __sb_end_write+0xa4/0xd0 [ 65.754038] ? mutex_unlock+0xd/0x10 [ 65.757744] ? do_syscall_64+0x4c/0x5b0 [ 65.761700] ? __sys_sendmsg+0x140/0x140 [ 65.765745] SyS_sendmsg+0xd/0x20 [ 65.769179] do_syscall_64+0x1c7/0x5b0 [ 65.773054] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 65.777886] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 65.783055] RIP: 0033:0x459ef9 [ 65.786225] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 65.793928] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 65.801186] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 65.808442] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 65.815703] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 65.822957] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 65.833010] batman_adv: batadv0: Adding interface: veth0_to_bridge [ 65.839348] 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. [ 65.864850] batman_adv: batadv0: Interface activated: veth0_to_bridge [ 65.872142] FAULT_INJECTION: forcing a failure. [ 65.872142] name failslab, interval 1, probability 0, space 0, times 0 [ 65.883387] CPU: 0 PID: 7129 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 65.891180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.900624] Call Trace: [ 65.903207] dump_stack+0xf7/0x13b [ 65.906748] should_fail.cold.3+0x105/0x14b [ 65.911069] should_failslab+0xba/0xf0 [ 65.914958] kmem_cache_alloc_node+0x287/0x790 [ 65.919547] __alloc_skb+0x92/0x500 [ 65.923162] ? skb_trim+0x160/0x160 [ 65.926765] ? if_nlmsg_size+0x2d9/0x6f0 [ 65.930815] rtmsg_ifinfo_build_skb+0x68/0x120 [ 65.935386] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 65.940205] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 65.945121] rtnetlink_event+0xc2/0x110 [ 65.949083] notifier_call_chain+0xd6/0x150 [ 65.953401] raw_notifier_call_chain+0x11/0x20 [ 65.957977] call_netdevice_notifiers_info+0x4b/0x60 [ 65.963065] __netdev_upper_dev_link+0x18e/0x1f0 [ 65.967802] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 65.972547] netdev_master_upper_dev_link+0x14/0x20 [ 65.977552] batadv_hardif_enable_interface+0x1af/0x990 [ 65.982898] batadv_softif_slave_add+0x82/0xe0 [ 65.987458] do_set_master+0x163/0x1f0 [ 65.991331] do_setlink+0x9dd/0x2c50 [ 65.995038] ? rtnl_register+0x20/0x20 [ 65.998944] ? __lock_acquire+0x6a4/0x4500 [ 66.003223] ? trace_hardirqs_off+0x10/0x10 [ 66.007529] rtnl_newlink+0xe0c/0x1390 [ 66.011532] ? rtnl_link_unregister+0x270/0x270 [ 66.016190] ? finish_task_switch+0x178/0x650 [ 66.020665] ? finish_task_switch+0x14d/0x650 [ 66.025168] ? find_held_lock+0x36/0x1d0 [ 66.029227] ? __mutex_lock+0x8b7/0x14c0 [ 66.033287] ? lock_downgrade+0x7f0/0x7f0 [ 66.037435] ? do_raw_spin_unlock+0x16a/0x250 [ 66.041934] rtnetlink_rcv_msg+0x34f/0x9d0 [ 66.046160] ? rtnl_bridge_getlink+0x760/0x760 [ 66.050742] ? find_held_lock+0x36/0x1d0 [ 66.054901] netlink_rcv_skb+0x133/0x370 [ 66.058949] ? rtnl_bridge_getlink+0x760/0x760 [ 66.063515] ? netlink_ack+0xa00/0xa00 [ 66.067387] ? netlink_deliver_tap+0x8e/0x920 [ 66.071873] rtnetlink_rcv+0x10/0x20 [ 66.075571] netlink_unicast+0x40d/0x5f0 [ 66.079613] ? netlink_attachskb+0x6e0/0x6e0 [ 66.084001] netlink_sendmsg+0x730/0xbd0 [ 66.088109] ? netlink_unicast+0x5f0/0x5f0 [ 66.092335] ? selinux_socket_sendmsg+0x31/0x40 [ 66.096989] ? security_socket_sendmsg+0x6a/0xa0 [ 66.101741] ? netlink_unicast+0x5f0/0x5f0 [ 66.105952] sock_sendmsg+0xb5/0xf0 [ 66.109555] ___sys_sendmsg+0x625/0x920 [ 66.113515] ? trace_hardirqs_off+0x10/0x10 [ 66.117833] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 66.122573] ? find_held_lock+0x36/0x1d0 [ 66.126617] ? lock_downgrade+0x7f0/0x7f0 [ 66.130755] ? __fget+0x1ca/0x2f0 [ 66.134196] ? __fget_light+0x166/0x200 [ 66.138146] ? __fdget+0xe/0x10 [ 66.141402] ? sockfd_lookup_light+0x1c/0x150 [ 66.145876] __sys_sendmsg+0xc1/0x140 [ 66.149661] ? SyS_shutdown+0x180/0x180 [ 66.153624] ? __sb_end_write+0xa4/0xd0 [ 66.157586] ? mutex_unlock+0xd/0x10 [ 66.161280] ? do_syscall_64+0x4c/0x5b0 [ 66.165232] ? __sys_sendmsg+0x140/0x140 [ 66.169272] SyS_sendmsg+0xd/0x20 [ 66.172709] do_syscall_64+0x1c7/0x5b0 [ 66.176582] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 66.181411] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 66.186585] RIP: 0033:0x459ef9 [ 66.189752] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.197441] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 66.204689] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 66.211943] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 66.219205] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 66.226464] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 66.234893] batman_adv: batadv0: Adding interface: veth1 [ 66.240405] batman_adv: batadv0: The MTU of interface veth1 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. [ 66.264819] batman_adv: batadv0: Interface activated: veth1 [ 66.272769] FAULT_INJECTION: forcing a failure. [ 66.272769] name failslab, interval 1, probability 0, space 0, times 0 [ 66.289852] CPU: 0 PID: 7132 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 66.297671] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.307017] Call Trace: [ 66.309602] dump_stack+0xf7/0x13b [ 66.313127] should_fail.cold.3+0x105/0x14b [ 66.317432] should_failslab+0xba/0xf0 [ 66.321307] kmem_cache_alloc_node_trace+0x5a/0x780 [ 66.326370] __kmalloc_node_track_caller+0x3c/0x70 [ 66.331290] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 66.336035] pskb_expand_head+0x106/0xc20 [ 66.340171] ? kasan_kmalloc+0xc7/0xe0 [ 66.344048] netlink_trim+0x18f/0x200 [ 66.347828] netlink_broadcast_filtered+0x57/0x8f0 [ 66.352735] ? __alloc_skb+0x308/0x500 [ 66.356603] nlmsg_notify+0x6b/0x120 [ 66.360304] rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 66.365135] rtmsg_ifinfo+0x4a/0x70 [ 66.368742] dev_close_many+0x287/0x610 [ 66.372700] ? list_netdevice+0x4b0/0x4b0 [ 66.376827] ? mark_held_locks+0xc7/0x130 [ 66.380959] ? dev_mc_unsync+0x165/0x1a5 [ 66.385014] dev_close.part.89+0xe5/0x190 [ 66.389149] ? dev_close_many+0x610/0x610 [ 66.393288] ? dev_mc_unsync+0x165/0x1a5 [ 66.397339] ? __local_bh_enable_ip+0x9c/0x180 [ 66.401921] ? _raw_spin_unlock_bh+0x30/0x40 [ 66.406327] dev_close+0x40/0x50 [ 66.409680] team_port_del+0x2c0/0x770 [ 66.413553] team_del_slave+0x34/0x70 [ 66.417342] do_set_master+0xb6/0x1f0 [ 66.421139] do_setlink+0x9dd/0x2c50 [ 66.424840] ? rtnl_register+0x20/0x20 [ 66.428711] ? __lock_acquire+0x6a4/0x4500 [ 66.432949] ? trace_hardirqs_off+0x10/0x10 [ 66.437270] rtnl_newlink+0xe0c/0x1390 [ 66.441148] ? rtnl_newlink+0x6d0/0x1390 [ 66.445210] ? rtnl_link_unregister+0x270/0x270 [ 66.449866] ? finish_task_switch+0x178/0x650 [ 66.454338] ? finish_task_switch+0x14d/0x650 [ 66.458814] ? find_held_lock+0x36/0x1d0 [ 66.462863] ? __mutex_lock+0x8b7/0x14c0 [ 66.466912] ? lock_downgrade+0x7f0/0x7f0 [ 66.471056] ? do_raw_spin_unlock+0x16a/0x250 [ 66.475553] rtnetlink_rcv_msg+0x34f/0x9d0 [ 66.479768] ? rtnl_bridge_getlink+0x760/0x760 [ 66.484331] ? find_held_lock+0x36/0x1d0 [ 66.488394] netlink_rcv_skb+0x133/0x370 [ 66.492451] ? rtnl_bridge_getlink+0x760/0x760 [ 66.497019] ? netlink_ack+0xa00/0xa00 [ 66.500895] ? netlink_deliver_tap+0x8e/0x920 [ 66.505378] rtnetlink_rcv+0x10/0x20 [ 66.509077] netlink_unicast+0x40d/0x5f0 [ 66.513121] ? netlink_attachskb+0x6e0/0x6e0 [ 66.517509] netlink_sendmsg+0x730/0xbd0 [ 66.521561] ? netlink_unicast+0x5f0/0x5f0 [ 66.525785] ? selinux_socket_sendmsg+0x31/0x40 [ 66.530440] ? security_socket_sendmsg+0x6a/0xa0 [ 66.535187] ? netlink_unicast+0x5f0/0x5f0 [ 66.539399] sock_sendmsg+0xb5/0xf0 [ 66.543014] ___sys_sendmsg+0x625/0x920 [ 66.546982] ? trace_hardirqs_off+0x10/0x10 [ 66.551289] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 66.556030] ? find_held_lock+0x36/0x1d0 [ 66.560080] ? lock_downgrade+0x7f0/0x7f0 [ 66.564217] ? __fget+0x1ca/0x2f0 [ 66.567653] ? __fget_light+0x166/0x200 [ 66.571613] ? __fdget+0xe/0x10 [ 66.574874] ? sockfd_lookup_light+0x1c/0x150 [ 66.579355] __sys_sendmsg+0xc1/0x140 [ 66.583134] ? SyS_shutdown+0x180/0x180 [ 66.587086] ? __sb_end_write+0xa4/0xd0 [ 66.591046] ? mutex_unlock+0xd/0x10 [ 66.594750] ? do_syscall_64+0x4c/0x5b0 [ 66.598702] ? __sys_sendmsg+0x140/0x140 [ 66.602747] SyS_sendmsg+0xd/0x20 [ 66.606185] do_syscall_64+0x1c7/0x5b0 [ 66.610056] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 66.614886] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 66.620061] RIP: 0033:0x459ef9 [ 66.623323] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.631024] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 66.638318] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 66.645566] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 66.652813] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 66.660063] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 66.671445] team0: Port device team_slave_0 removed [ 66.677040] batman_adv: batadv0: Adding interface: team_slave_0 [ 66.683157] batman_adv: batadv0: The MTU of interface team_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. [ 66.708656] batman_adv: batadv0: Not using interface team_slave_0 (retrying later): interface not active [ 66.719803] device bridge_slave_0 left promiscuous mode [ 66.737815] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.744287] FAULT_INJECTION: forcing a failure. [ 66.744287] name failslab, interval 1, probability 0, space 0, times 0 [ 66.755514] CPU: 1 PID: 7137 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 66.763299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.772647] Call Trace: [ 66.775305] dump_stack+0xf7/0x13b [ 66.778826] should_fail.cold.3+0x105/0x14b [ 66.783136] should_failslab+0xba/0xf0 [ 66.787016] kmem_cache_alloc_node+0x56/0x790 [ 66.791512] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 66.796608] __alloc_skb+0x92/0x500 [ 66.800216] ? skb_trim+0x160/0x160 [ 66.803821] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 66.809010] ? __lock_is_held+0xb5/0x140 [ 66.813063] fdb_notify+0x88/0x130 [ 66.816583] fdb_delete+0x129/0x3a0 [ 66.820195] br_fdb_delete_by_port+0x163/0x1d0 [ 66.824763] br_stp_disable_port+0xeb/0x150 [ 66.829072] del_nbp+0x119/0x8b0 [ 66.832418] br_del_if+0xc7/0x470 [ 66.835859] br_del_slave+0x10/0x20 [ 66.839472] do_set_master+0xb6/0x1f0 [ 66.843343] do_setlink+0x9dd/0x2c50 [ 66.847050] ? trace_hardirqs_off+0x10/0x10 [ 66.851364] ? lock_downgrade+0x7f0/0x7f0 [ 66.855495] ? trace_hardirqs_off+0x10/0x10 [ 66.859803] ? rtnl_register+0x20/0x20 [ 66.863673] ? trace_hardirqs_off+0x10/0x10 [ 66.867988] ? __lock_is_held+0xb5/0x140 [ 66.872039] ? find_held_lock+0x36/0x1d0 [ 66.876080] ? __lock_acquire+0x6a4/0x4500 [ 66.880303] ? load_balance+0xb38/0x2190 [ 66.884352] ? lock_downgrade+0x7f0/0x7f0 [ 66.888477] ? lock_pin_lock+0x340/0x340 [ 66.892529] ? __lock_acquire+0x6a4/0x4500 [ 66.896758] ? trace_hardirqs_off+0x10/0x10 [ 66.901063] ? __lock_is_held+0xb5/0x140 [ 66.905245] rtnl_newlink+0xe0c/0x1390 [ 66.909115] ? trace_hardirqs_off+0x10/0x10 [ 66.913431] ? memset+0x31/0x40 [ 66.916712] ? rtnl_newlink+0x6d0/0x1390 [ 66.920767] ? rtnl_link_unregister+0x270/0x270 [ 66.925451] ? finish_task_switch+0x178/0x650 [ 66.929942] ? finish_task_switch+0x14d/0x650 [ 66.934421] ? find_held_lock+0x36/0x1d0 [ 66.938510] ? __mutex_lock+0x8b7/0x14c0 [ 66.942552] ? lock_downgrade+0x7f0/0x7f0 [ 66.946683] ? do_raw_spin_unlock+0x16a/0x250 [ 66.951216] rtnetlink_rcv_msg+0x34f/0x9d0 [ 66.955444] ? rtnl_bridge_getlink+0x760/0x760 [ 66.960034] ? find_held_lock+0x36/0x1d0 [ 66.964084] netlink_rcv_skb+0x133/0x370 [ 66.968123] ? rtnl_bridge_getlink+0x760/0x760 [ 66.972682] ? netlink_ack+0xa00/0xa00 [ 66.976547] ? netlink_deliver_tap+0x8e/0x920 [ 66.981031] rtnetlink_rcv+0x10/0x20 [ 66.984720] netlink_unicast+0x40d/0x5f0 [ 66.988761] ? netlink_attachskb+0x6e0/0x6e0 [ 66.993147] netlink_sendmsg+0x730/0xbd0 [ 66.997188] ? netlink_unicast+0x5f0/0x5f0 [ 67.001403] ? selinux_socket_sendmsg+0x31/0x40 [ 67.006049] ? security_socket_sendmsg+0x6a/0xa0 [ 67.010791] ? netlink_unicast+0x5f0/0x5f0 [ 67.015013] sock_sendmsg+0xb5/0xf0 [ 67.018632] ___sys_sendmsg+0x625/0x920 [ 67.022590] ? trace_hardirqs_off+0x10/0x10 [ 67.026901] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 67.031639] ? find_held_lock+0x36/0x1d0 [ 67.035693] ? lock_downgrade+0x7f0/0x7f0 [ 67.039835] ? __fget+0x1ca/0x2f0 [ 67.043276] ? __fget_light+0x166/0x200 [ 67.047232] ? __fdget+0xe/0x10 [ 67.050488] ? sockfd_lookup_light+0x1c/0x150 [ 67.054961] __sys_sendmsg+0xc1/0x140 [ 67.058741] ? SyS_shutdown+0x180/0x180 [ 67.062705] ? __sb_end_write+0xa4/0xd0 [ 67.066665] ? mutex_unlock+0xd/0x10 [ 67.070368] ? do_syscall_64+0x4c/0x5b0 [ 67.074337] ? __sys_sendmsg+0x140/0x140 [ 67.078383] SyS_sendmsg+0xd/0x20 [ 67.081839] do_syscall_64+0x1c7/0x5b0 [ 67.085703] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 67.090527] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 67.095705] RIP: 0033:0x459ef9 [ 67.098883] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 67.106575] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 67.113829] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 67.121093] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 67.128350] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 67.135602] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 2020/02/11 23:04:36 executed programs: 81 [ 67.181235] batman_adv: batadv0: Adding interface: bridge_slave_0 [ 67.187575] batman_adv: batadv0: The MTU of interface bridge_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. [ 67.212903] batman_adv: batadv0: Interface activated: bridge_slave_0 [ 67.219745] device bridge_slave_0 left promiscuous mode [ 67.225814] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.232336] FAULT_INJECTION: forcing a failure. [ 67.232336] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 67.244129] CPU: 0 PID: 7141 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 67.251915] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.261270] Call Trace: [ 67.263851] dump_stack+0xf7/0x13b [ 67.267384] should_fail.cold.3+0x105/0x14b [ 67.271698] __alloc_pages_nodemask+0x1d5/0x770 [ 67.276363] ? __alloc_pages_slowpath+0x2650/0x2650 [ 67.281383] ? find_held_lock+0x36/0x1d0 [ 67.285463] cache_grow_begin+0x80/0x3f0 [ 67.289519] kmem_cache_alloc_node+0x6b7/0x790 [ 67.294100] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 67.299200] __alloc_skb+0x92/0x500 [ 67.302814] ? skb_trim+0x160/0x160 [ 67.306437] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 67.311614] ? __lock_is_held+0xb5/0x140 [ 67.315708] fdb_notify+0x88/0x130 [ 67.319229] fdb_delete+0x129/0x3a0 [ 67.322844] br_fdb_delete_by_port+0x163/0x1d0 [ 67.327423] br_stp_disable_port+0xeb/0x150 [ 67.331780] del_nbp+0x119/0x8b0 [ 67.335143] br_del_if+0xc7/0x470 [ 67.338590] br_del_slave+0x10/0x20 [ 67.342201] do_set_master+0xb6/0x1f0 [ 67.345983] do_setlink+0x9dd/0x2c50 [ 67.349684] ? rtnl_register+0x20/0x20 [ 67.353554] ? trace_hardirqs_off+0x10/0x10 [ 67.357916] ? __lock_acquire+0x6a4/0x4500 [ 67.362154] ? trace_hardirqs_off+0x10/0x10 [ 67.366480] ? __lock_acquire+0x6a4/0x4500 [ 67.370711] ? trace_hardirqs_on+0x10/0x10 [ 67.374937] ? __lock_acquire+0x6a4/0x4500 [ 67.379149] ? trace_hardirqs_off+0x10/0x10 [ 67.383457] rtnl_newlink+0xe0c/0x1390 [ 67.387324] ? trace_hardirqs_off+0x10/0x10 [ 67.391641] ? memset+0x31/0x40 [ 67.394915] ? rtnl_newlink+0x6d0/0x1390 [ 67.398965] ? rtnl_link_unregister+0x270/0x270 [ 67.403616] ? finish_task_switch+0x178/0x650 [ 67.408088] ? finish_task_switch+0x14d/0x650 [ 67.412577] ? find_held_lock+0x36/0x1d0 [ 67.416719] ? __mutex_lock+0x8b7/0x14c0 [ 67.420780] ? lock_downgrade+0x7f0/0x7f0 [ 67.424924] ? do_raw_spin_unlock+0x16a/0x250 [ 67.429416] rtnetlink_rcv_msg+0x34f/0x9d0 [ 67.433637] ? rtnl_bridge_getlink+0x760/0x760 [ 67.438200] ? find_held_lock+0x36/0x1d0 [ 67.442263] netlink_rcv_skb+0x133/0x370 [ 67.446321] ? rtnl_bridge_getlink+0x760/0x760 [ 67.450898] ? netlink_ack+0xa00/0xa00 [ 67.454811] ? netlink_deliver_tap+0x8e/0x920 [ 67.459285] rtnetlink_rcv+0x10/0x20 [ 67.462989] netlink_unicast+0x40d/0x5f0 [ 67.467038] ? netlink_attachskb+0x6e0/0x6e0 [ 67.471435] netlink_sendmsg+0x730/0xbd0 [ 67.475481] ? netlink_unicast+0x5f0/0x5f0 [ 67.479700] ? selinux_socket_sendmsg+0x31/0x40 [ 67.484350] ? security_socket_sendmsg+0x6a/0xa0 [ 67.489086] ? netlink_unicast+0x5f0/0x5f0 [ 67.493298] sock_sendmsg+0xb5/0xf0 [ 67.496911] ___sys_sendmsg+0x625/0x920 [ 67.500878] ? trace_hardirqs_off+0x10/0x10 [ 67.505191] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 67.509934] ? find_held_lock+0x36/0x1d0 [ 67.513982] ? lock_downgrade+0x7f0/0x7f0 [ 67.518114] ? __fget+0x1ca/0x2f0 [ 67.521554] ? __fget_light+0x166/0x200 [ 67.525512] ? __fdget+0xe/0x10 [ 67.528767] ? sockfd_lookup_light+0x1c/0x150 [ 67.533242] __sys_sendmsg+0xc1/0x140 [ 67.537020] ? SyS_shutdown+0x180/0x180 [ 67.540979] ? __sb_end_write+0xa4/0xd0 [ 67.544947] ? mutex_unlock+0xd/0x10 [ 67.548665] ? do_syscall_64+0x4c/0x5b0 [ 67.552635] ? __sys_sendmsg+0x140/0x140 [ 67.556678] SyS_sendmsg+0xd/0x20 [ 67.560118] do_syscall_64+0x1c7/0x5b0 [ 67.563993] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 67.568822] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 67.573994] RIP: 0033:0x459ef9 [ 67.577164] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 67.584858] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 67.592127] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 67.599488] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 67.606846] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 67.614159] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 67.671695] batman_adv: batadv0: Adding interface: bridge_slave_0 [ 67.678202] batman_adv: batadv0: The MTU of interface bridge_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. [ 67.704328] batman_adv: batadv0: Interface activated: bridge_slave_0 [ 67.711486] FAULT_INJECTION: forcing a failure. [ 67.711486] name failslab, interval 1, probability 0, space 0, times 0 [ 67.725930] CPU: 0 PID: 7144 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 67.733743] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.743096] Call Trace: [ 67.745676] dump_stack+0xf7/0x13b [ 67.749208] should_fail.cold.3+0x105/0x14b [ 67.753514] should_failslab+0xba/0xf0 [ 67.757495] kmem_cache_alloc_node+0x287/0x790 [ 67.762062] __alloc_skb+0x92/0x500 [ 67.765717] ? skb_trim+0x160/0x160 [ 67.769325] ? if_nlmsg_size+0x2d9/0x6f0 [ 67.773379] rtmsg_ifinfo_build_skb+0x68/0x120 [ 67.777995] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 67.782821] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 67.787738] rtnetlink_event+0xc2/0x110 [ 67.791711] notifier_call_chain+0xd6/0x150 [ 67.796022] raw_notifier_call_chain+0x11/0x20 [ 67.800591] call_netdevice_notifiers_info+0x4b/0x60 [ 67.805680] __netdev_upper_dev_link+0x18e/0x1f0 [ 67.810416] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 67.815150] netdev_master_upper_dev_link+0x14/0x20 [ 67.820147] batadv_hardif_enable_interface+0x1af/0x990 [ 67.825501] batadv_softif_slave_add+0x82/0xe0 [ 67.830069] do_set_master+0x163/0x1f0 [ 67.833943] do_setlink+0x9dd/0x2c50 [ 67.837635] ? __lock_acquire+0x6a4/0x4500 [ 67.841861] ? trace_hardirqs_off+0x10/0x10 [ 67.846182] ? rtnl_register+0x20/0x20 [ 67.850069] ? trace_hardirqs_on+0x10/0x10 [ 67.854300] ? __lock_acquire+0x6a4/0x4500 [ 67.858519] ? trace_hardirqs_off+0x10/0x10 [ 67.862832] ? trace_hardirqs_off+0x10/0x10 [ 67.867139] ? trace_hardirqs_off+0x10/0x10 [ 67.871457] rtnl_newlink+0xe0c/0x1390 [ 67.875331] ? rtnl_link_unregister+0x270/0x270 [ 67.879981] ? finish_task_switch+0x178/0x650 [ 67.884452] ? finish_task_switch+0x14d/0x650 [ 67.888925] ? find_held_lock+0x36/0x1d0 [ 67.892967] ? __mutex_lock+0x8b7/0x14c0 [ 67.897007] ? lock_downgrade+0x7f0/0x7f0 [ 67.901138] ? do_raw_spin_unlock+0x16a/0x250 [ 67.905627] rtnetlink_rcv_msg+0x34f/0x9d0 [ 67.909847] ? rtnl_bridge_getlink+0x760/0x760 [ 67.914412] ? find_held_lock+0x36/0x1d0 [ 67.918452] netlink_rcv_skb+0x133/0x370 [ 67.922492] ? rtnl_bridge_getlink+0x760/0x760 [ 67.927100] ? netlink_ack+0xa00/0xa00 [ 67.930968] ? netlink_deliver_tap+0x8e/0x920 [ 67.935450] rtnetlink_rcv+0x10/0x20 [ 67.939142] netlink_unicast+0x40d/0x5f0 [ 67.943182] ? netlink_attachskb+0x6e0/0x6e0 [ 67.947570] netlink_sendmsg+0x730/0xbd0 [ 67.951610] ? netlink_unicast+0x5f0/0x5f0 [ 67.955879] ? selinux_socket_sendmsg+0x31/0x40 [ 67.960542] ? security_socket_sendmsg+0x6a/0xa0 [ 67.965281] ? netlink_unicast+0x5f0/0x5f0 [ 67.969492] sock_sendmsg+0xb5/0xf0 [ 67.973095] ___sys_sendmsg+0x625/0x920 [ 67.977048] ? trace_hardirqs_off+0x10/0x10 [ 67.981350] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 67.986097] ? find_held_lock+0x36/0x1d0 [ 67.990150] ? lock_downgrade+0x7f0/0x7f0 [ 67.994415] ? __fget+0x1ca/0x2f0 [ 67.997861] ? __fget_light+0x166/0x200 [ 68.001819] ? __fdget+0xe/0x10 [ 68.005083] ? sockfd_lookup_light+0x1c/0x150 [ 68.009581] __sys_sendmsg+0xc1/0x140 [ 68.013359] ? SyS_shutdown+0x180/0x180 [ 68.017311] ? __sb_end_write+0xa4/0xd0 [ 68.021263] ? mutex_unlock+0xd/0x10 [ 68.024967] ? do_syscall_64+0x4c/0x5b0 [ 68.028921] ? __sys_sendmsg+0x140/0x140 [ 68.032971] SyS_sendmsg+0xd/0x20 [ 68.036404] do_syscall_64+0x1c7/0x5b0 [ 68.040274] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 68.045115] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 68.050285] RIP: 0033:0x459ef9 [ 68.053463] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 68.061149] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 68.068396] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 68.075642] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 68.082889] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 68.090136] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 68.098855] batman_adv: batadv0: Adding interface: veth1_to_bridge [ 68.105441] batman_adv: batadv0: The MTU of interface veth1_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. [ 68.130747] batman_adv: batadv0: Interface activated: veth1_to_bridge [ 68.137900] device bridge_slave_0 left promiscuous mode [ 68.144464] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.150959] FAULT_INJECTION: forcing a failure. [ 68.150959] name failslab, interval 1, probability 0, space 0, times 0 [ 68.162177] CPU: 1 PID: 7147 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 68.169967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.179314] Call Trace: [ 68.181895] dump_stack+0xf7/0x13b [ 68.185425] should_fail.cold.3+0x105/0x14b [ 68.189741] should_failslab+0xba/0xf0 [ 68.193612] kmem_cache_alloc_node+0x56/0x790 [ 68.198095] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 68.203188] __alloc_skb+0x92/0x500 [ 68.206805] ? skb_trim+0x160/0x160 [ 68.210415] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 68.215692] ? __lock_is_held+0xb5/0x140 [ 68.219757] fdb_notify+0x88/0x130 [ 68.223287] fdb_delete+0x129/0x3a0 [ 68.226906] br_fdb_delete_by_port+0x163/0x1d0 [ 68.231474] br_stp_disable_port+0xeb/0x150 [ 68.235775] del_nbp+0x119/0x8b0 [ 68.239125] br_del_if+0xc7/0x470 [ 68.242558] br_del_slave+0x10/0x20 [ 68.246179] do_set_master+0xb6/0x1f0 [ 68.249967] do_setlink+0x9dd/0x2c50 [ 68.253679] ? rtnl_register+0x20/0x20 [ 68.257552] ? __lock_acquire+0x6a4/0x4500 [ 68.261775] ? __lock_acquire+0x6a4/0x4500 [ 68.266006] ? __lock_acquire+0x6a4/0x4500 [ 68.270230] rtnl_newlink+0xe0c/0x1390 [ 68.274104] ? trace_hardirqs_off+0x10/0x10 [ 68.278411] ? memset+0x31/0x40 [ 68.281676] ? rtnl_newlink+0x6d0/0x1390 [ 68.285721] ? rtnl_link_unregister+0x270/0x270 [ 68.290372] ? finish_task_switch+0x178/0x650 [ 68.294843] ? finish_task_switch+0x14d/0x650 [ 68.299321] ? find_held_lock+0x36/0x1d0 [ 68.303366] ? __mutex_lock+0x8b7/0x14c0 [ 68.307460] ? lock_downgrade+0x7f0/0x7f0 [ 68.311590] ? do_raw_spin_unlock+0x16a/0x250 [ 68.316211] rtnetlink_rcv_msg+0x34f/0x9d0 [ 68.320429] ? rtnl_bridge_getlink+0x760/0x760 [ 68.324992] ? find_held_lock+0x36/0x1d0 [ 68.329045] netlink_rcv_skb+0x133/0x370 [ 68.333096] ? rtnl_bridge_getlink+0x760/0x760 [ 68.337667] ? netlink_ack+0xa00/0xa00 [ 68.341540] ? netlink_deliver_tap+0x8e/0x920 [ 68.346017] rtnetlink_rcv+0x10/0x20 [ 68.349712] netlink_unicast+0x40d/0x5f0 [ 68.353761] ? netlink_attachskb+0x6e0/0x6e0 [ 68.358149] netlink_sendmsg+0x730/0xbd0 [ 68.362187] ? netlink_unicast+0x5f0/0x5f0 [ 68.366398] ? selinux_socket_sendmsg+0x31/0x40 [ 68.371046] ? security_socket_sendmsg+0x6a/0xa0 [ 68.375780] ? netlink_unicast+0x5f0/0x5f0 [ 68.380015] sock_sendmsg+0xb5/0xf0 [ 68.383628] ___sys_sendmsg+0x625/0x920 [ 68.387583] ? trace_hardirqs_off+0x10/0x10 [ 68.391889] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 68.396654] ? find_held_lock+0x36/0x1d0 [ 68.400706] ? lock_downgrade+0x7f0/0x7f0 [ 68.404845] ? __fget+0x1ca/0x2f0 [ 68.408276] ? __fget_light+0x166/0x200 [ 68.412243] ? __fdget+0xe/0x10 [ 68.415501] ? sockfd_lookup_light+0x1c/0x150 [ 68.419974] __sys_sendmsg+0xc1/0x140 [ 68.423763] ? SyS_shutdown+0x180/0x180 [ 68.427726] ? __sb_end_write+0xa4/0xd0 [ 68.431693] ? mutex_unlock+0xd/0x10 [ 68.435392] ? do_syscall_64+0x4c/0x5b0 [ 68.439346] ? __sys_sendmsg+0x140/0x140 [ 68.443388] SyS_sendmsg+0xd/0x20 [ 68.446821] do_syscall_64+0x1c7/0x5b0 [ 68.450697] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 68.455529] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 68.460708] RIP: 0033:0x459ef9 [ 68.463883] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 68.471572] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 68.478821] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 68.486082] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 68.493340] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 68.500589] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 68.531687] batman_adv: batadv0: Adding interface: bridge_slave_0 [ 68.537949] batman_adv: batadv0: The MTU of interface bridge_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. [ 68.563360] batman_adv: batadv0: Interface activated: bridge_slave_0 [ 68.570806] FAULT_INJECTION: forcing a failure. [ 68.570806] name failslab, interval 1, probability 0, space 0, times 0 [ 68.582457] CPU: 0 PID: 7152 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 68.590269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.599622] Call Trace: [ 68.602219] dump_stack+0xf7/0x13b [ 68.605771] should_fail.cold.3+0x105/0x14b [ 68.610102] should_failslab+0xba/0xf0 [ 68.614001] kmem_cache_alloc_node+0x287/0x790 [ 68.618595] __alloc_skb+0x92/0x500 [ 68.622210] ? skb_trim+0x160/0x160 [ 68.625818] ? if_nlmsg_size+0x2d9/0x6f0 [ 68.629857] rtmsg_ifinfo_build_skb+0x68/0x120 [ 68.634434] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 68.639262] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 68.644171] rtnetlink_event+0xc2/0x110 [ 68.648130] notifier_call_chain+0xd6/0x150 [ 68.652443] raw_notifier_call_chain+0x11/0x20 [ 68.657015] call_netdevice_notifiers_info+0x4b/0x60 [ 68.662097] __netdev_upper_dev_link+0x18e/0x1f0 [ 68.666841] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 68.671600] netdev_master_upper_dev_link+0x14/0x20 [ 68.676610] batadv_hardif_enable_interface+0x1af/0x990 [ 68.681967] batadv_softif_slave_add+0x82/0xe0 [ 68.686530] do_set_master+0x163/0x1f0 [ 68.690407] do_setlink+0x9dd/0x2c50 [ 68.694121] ? find_held_lock+0x36/0x1d0 [ 68.698197] ? rtnl_register+0x20/0x20 [ 68.702066] ? load_balance+0xb38/0x2190 [ 68.706110] ? lock_downgrade+0x7f0/0x7f0 [ 68.710241] ? lock_pin_lock+0x340/0x340 [ 68.714293] ? __lock_acquire+0x6a4/0x4500 [ 68.718509] ? trace_hardirqs_off+0x10/0x10 [ 68.722811] ? __lock_is_held+0xb5/0x140 [ 68.726866] ? trace_hardirqs_off+0x10/0x10 [ 68.731192] rtnl_newlink+0xe0c/0x1390 [ 68.735073] ? rtnl_link_unregister+0x270/0x270 [ 68.739773] ? finish_task_switch+0x178/0x650 [ 68.744246] ? finish_task_switch+0x14d/0x650 [ 68.748721] ? find_held_lock+0x36/0x1d0 [ 68.752773] ? __mutex_lock+0x8b7/0x14c0 [ 68.756823] ? lock_downgrade+0x7f0/0x7f0 [ 68.760962] ? do_raw_spin_unlock+0x16a/0x250 [ 68.765449] rtnetlink_rcv_msg+0x34f/0x9d0 [ 68.769666] ? rtnl_bridge_getlink+0x760/0x760 [ 68.774227] ? find_held_lock+0x36/0x1d0 [ 68.778270] netlink_rcv_skb+0x133/0x370 [ 68.782314] ? rtnl_bridge_getlink+0x760/0x760 [ 68.786874] ? netlink_ack+0xa00/0xa00 [ 68.790748] ? netlink_deliver_tap+0x8e/0x920 [ 68.795232] rtnetlink_rcv+0x10/0x20 [ 68.798921] netlink_unicast+0x40d/0x5f0 [ 68.802962] ? netlink_attachskb+0x6e0/0x6e0 [ 68.807350] netlink_sendmsg+0x730/0xbd0 [ 68.811397] ? netlink_unicast+0x5f0/0x5f0 [ 68.815618] ? selinux_socket_sendmsg+0x31/0x40 [ 68.820263] ? security_socket_sendmsg+0x6a/0xa0 [ 68.825003] ? netlink_unicast+0x5f0/0x5f0 [ 68.829233] sock_sendmsg+0xb5/0xf0 [ 68.832895] ___sys_sendmsg+0x625/0x920 [ 68.836878] ? trace_hardirqs_off+0x10/0x10 [ 68.841202] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 68.845945] ? find_held_lock+0x36/0x1d0 [ 68.849991] ? lock_downgrade+0x7f0/0x7f0 [ 68.854138] ? __fget+0x1ca/0x2f0 [ 68.857578] ? __fget_light+0x166/0x200 [ 68.861532] ? __fdget+0xe/0x10 [ 68.864793] ? sockfd_lookup_light+0x1c/0x150 [ 68.869269] __sys_sendmsg+0xc1/0x140 [ 68.873054] ? SyS_shutdown+0x180/0x180 [ 68.877018] ? __sb_end_write+0xa4/0xd0 [ 68.880974] ? mutex_unlock+0xd/0x10 [ 68.884670] ? do_syscall_64+0x4c/0x5b0 [ 68.888621] ? __sys_sendmsg+0x140/0x140 [ 68.892669] SyS_sendmsg+0xd/0x20 [ 68.896111] do_syscall_64+0x1c7/0x5b0 [ 68.899977] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 68.904809] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 68.909988] RIP: 0033:0x459ef9 [ 68.913171] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 68.920874] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 68.928127] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 68.935384] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 68.942642] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 68.949898] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 68.958539] batman_adv: batadv0: Adding interface: veth0 [ 68.964051] 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. [ 68.988499] batman_adv: batadv0: Interface activated: veth0 [ 68.995217] FAULT_INJECTION: forcing a failure. [ 68.995217] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 69.007016] CPU: 1 PID: 7153 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 69.014785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.024116] Call Trace: [ 69.026684] dump_stack+0xf7/0x13b [ 69.030206] should_fail.cold.3+0x105/0x14b [ 69.034502] __alloc_pages_nodemask+0x1d5/0x770 [ 69.039146] ? __alloc_pages_slowpath+0x2650/0x2650 [ 69.044137] ? lock_downgrade+0x7f0/0x7f0 [ 69.048274] cache_grow_begin+0x80/0x3f0 [ 69.052315] kmem_cache_alloc_node+0x6b7/0x790 [ 69.056894] __alloc_skb+0x92/0x500 [ 69.060512] ? skb_trim+0x160/0x160 [ 69.064122] ? if_nlmsg_size+0x2d9/0x6f0 [ 69.068162] rtmsg_ifinfo_build_skb+0x68/0x120 [ 69.072729] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 69.077552] rtmsg_ifinfo+0x4a/0x70 [ 69.081157] dev_close_many+0x287/0x610 [ 69.085108] ? list_netdevice+0x4b0/0x4b0 [ 69.089250] ? mark_held_locks+0xc7/0x130 [ 69.093372] ? dev_mc_unsync+0x165/0x1a5 [ 69.097411] dev_close.part.89+0xe5/0x190 [ 69.101533] ? dev_close_many+0x610/0x610 [ 69.105661] ? dev_mc_unsync+0x165/0x1a5 [ 69.109699] ? __local_bh_enable_ip+0x9c/0x180 [ 69.114256] ? _raw_spin_unlock_bh+0x30/0x40 [ 69.118639] dev_close+0x40/0x50 [ 69.121985] team_port_del+0x2c0/0x770 [ 69.125846] team_del_slave+0x34/0x70 [ 69.129621] do_set_master+0xb6/0x1f0 [ 69.133400] do_setlink+0x9dd/0x2c50 [ 69.137088] ? find_held_lock+0x36/0x1d0 [ 69.141125] ? rtnl_register+0x20/0x20 [ 69.144988] ? load_balance+0xb38/0x2190 [ 69.149023] ? lock_downgrade+0x7f0/0x7f0 [ 69.153145] ? lock_pin_lock+0x340/0x340 [ 69.157186] ? __lock_acquire+0x6a4/0x4500 [ 69.161395] ? trace_hardirqs_off+0x10/0x10 [ 69.165691] ? __lock_is_held+0xb5/0x140 [ 69.169728] ? trace_hardirqs_off+0x10/0x10 [ 69.174076] rtnl_newlink+0xe0c/0x1390 [ 69.177940] ? rtnl_newlink+0x6d0/0x1390 [ 69.181986] ? rtnl_link_unregister+0x270/0x270 [ 69.186628] ? finish_task_switch+0x178/0x650 [ 69.191095] ? finish_task_switch+0x14d/0x650 [ 69.195565] ? find_held_lock+0x36/0x1d0 [ 69.199643] ? __mutex_lock+0x8b7/0x14c0 [ 69.203806] ? lock_downgrade+0x7f0/0x7f0 [ 69.207931] ? do_raw_spin_unlock+0x16a/0x250 [ 69.212433] rtnetlink_rcv_msg+0x34f/0x9d0 [ 69.216653] ? rtnl_bridge_getlink+0x760/0x760 [ 69.221219] ? find_held_lock+0x36/0x1d0 [ 69.225264] netlink_rcv_skb+0x133/0x370 [ 69.229303] ? rtnl_bridge_getlink+0x760/0x760 [ 69.233866] ? netlink_ack+0xa00/0xa00 [ 69.237731] ? netlink_deliver_tap+0x8e/0x920 [ 69.242207] rtnetlink_rcv+0x10/0x20 [ 69.246016] netlink_unicast+0x40d/0x5f0 [ 69.250059] ? netlink_attachskb+0x6e0/0x6e0 [ 69.254445] netlink_sendmsg+0x730/0xbd0 [ 69.258483] ? netlink_unicast+0x5f0/0x5f0 [ 69.262694] ? selinux_socket_sendmsg+0x31/0x40 [ 69.267360] ? security_socket_sendmsg+0x6a/0xa0 [ 69.272099] ? netlink_unicast+0x5f0/0x5f0 [ 69.276310] sock_sendmsg+0xb5/0xf0 [ 69.279914] ___sys_sendmsg+0x625/0x920 [ 69.283866] ? trace_hardirqs_off+0x10/0x10 [ 69.288207] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 69.292946] ? find_held_lock+0x36/0x1d0 [ 69.296984] ? lock_downgrade+0x7f0/0x7f0 [ 69.301110] ? __fget+0x1ca/0x2f0 [ 69.304555] ? __fget_light+0x166/0x200 [ 69.308509] ? __fdget+0xe/0x10 [ 69.311827] ? sockfd_lookup_light+0x1c/0x150 [ 69.316304] __sys_sendmsg+0xc1/0x140 [ 69.320092] ? SyS_shutdown+0x180/0x180 [ 69.324050] ? __sb_end_write+0xa4/0xd0 [ 69.328043] ? mutex_unlock+0xd/0x10 [ 69.331742] ? do_syscall_64+0x4c/0x5b0 [ 69.335692] ? __sys_sendmsg+0x140/0x140 [ 69.339730] SyS_sendmsg+0xd/0x20 [ 69.343162] do_syscall_64+0x1c7/0x5b0 [ 69.347022] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.351869] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 69.357038] RIP: 0033:0x459ef9 [ 69.360204] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.367890] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 69.375137] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 69.382386] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 69.389632] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 69.396893] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 69.409040] team0: Port device team_slave_1 removed [ 69.415845] batman_adv: batadv0: Adding interface: team_slave_1 [ 69.423888] batman_adv: batadv0: The MTU of interface team_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. [ 69.452206] batman_adv: batadv0: Not using interface team_slave_1 (retrying later): interface not active [ 69.464828] device bridge_slave_1 left promiscuous mode [ 69.474973] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.481551] FAULT_INJECTION: forcing a failure. [ 69.481551] name failslab, interval 1, probability 0, space 0, times 0 [ 69.492793] CPU: 1 PID: 7155 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 69.500588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.509935] Call Trace: [ 69.512507] dump_stack+0xf7/0x13b [ 69.516027] should_fail.cold.3+0x105/0x14b [ 69.520327] should_failslab+0xba/0xf0 [ 69.524193] kmem_cache_alloc_node+0x56/0x790 [ 69.528665] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 69.533757] __alloc_skb+0x92/0x500 [ 69.537373] ? skb_trim+0x160/0x160 [ 69.540976] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 69.546158] ? __lock_is_held+0xb5/0x140 [ 69.550200] fdb_notify+0x88/0x130 [ 69.553734] fdb_delete+0x129/0x3a0 [ 69.557348] br_fdb_delete_by_port+0x163/0x1d0 [ 69.561910] br_stp_disable_port+0xeb/0x150 [ 69.566210] del_nbp+0x119/0x8b0 [ 69.569555] br_del_if+0xc7/0x470 [ 69.572986] br_del_slave+0x10/0x20 [ 69.576610] do_set_master+0xb6/0x1f0 [ 69.580391] do_setlink+0x9dd/0x2c50 [ 69.584082] ? trace_hardirqs_off+0x10/0x10 [ 69.588380] ? lock_downgrade+0x7f0/0x7f0 [ 69.592512] ? rtnl_register+0x20/0x20 [ 69.596375] ? trace_hardirqs_off+0x10/0x10 [ 69.600676] ? find_held_lock+0x36/0x1d0 [ 69.604720] ? __lock_acquire+0x6a4/0x4500 [ 69.608935] ? load_balance+0xb38/0x2190 [ 69.612972] ? lock_downgrade+0x7f0/0x7f0 [ 69.617097] ? lock_pin_lock+0x340/0x340 [ 69.621138] ? __lock_acquire+0x6a4/0x4500 [ 69.625350] ? trace_hardirqs_off+0x10/0x10 [ 69.629649] ? __lock_is_held+0xb5/0x140 [ 69.633689] rtnl_newlink+0xe0c/0x1390 [ 69.637554] ? trace_hardirqs_off+0x10/0x10 [ 69.641857] ? memset+0x31/0x40 [ 69.645114] ? rtnl_newlink+0x6d0/0x1390 [ 69.649165] ? rtnl_link_unregister+0x270/0x270 [ 69.653816] ? finish_task_switch+0x178/0x650 [ 69.658326] ? finish_task_switch+0x14d/0x650 [ 69.662804] ? find_held_lock+0x36/0x1d0 [ 69.666855] ? __mutex_lock+0x8b7/0x14c0 [ 69.670900] ? lock_downgrade+0x7f0/0x7f0 [ 69.675031] ? do_raw_spin_unlock+0x16a/0x250 [ 69.679564] rtnetlink_rcv_msg+0x34f/0x9d0 [ 69.683789] ? rtnl_bridge_getlink+0x760/0x760 [ 69.688353] ? find_held_lock+0x36/0x1d0 [ 69.692404] netlink_rcv_skb+0x133/0x370 [ 69.696454] ? rtnl_bridge_getlink+0x760/0x760 [ 69.701016] ? netlink_ack+0xa00/0xa00 [ 69.704888] ? netlink_deliver_tap+0x8e/0x920 [ 69.709365] rtnetlink_rcv+0x10/0x20 [ 69.713100] netlink_unicast+0x40d/0x5f0 [ 69.717140] ? netlink_attachskb+0x6e0/0x6e0 [ 69.721528] netlink_sendmsg+0x730/0xbd0 [ 69.725574] ? netlink_unicast+0x5f0/0x5f0 [ 69.729797] ? selinux_socket_sendmsg+0x31/0x40 [ 69.734447] ? security_socket_sendmsg+0x6a/0xa0 [ 69.739190] ? netlink_unicast+0x5f0/0x5f0 [ 69.743409] sock_sendmsg+0xb5/0xf0 [ 69.747042] ___sys_sendmsg+0x625/0x920 [ 69.751013] ? trace_hardirqs_off+0x10/0x10 [ 69.755312] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 69.760161] ? find_held_lock+0x36/0x1d0 [ 69.764205] ? lock_downgrade+0x7f0/0x7f0 [ 69.768346] ? __fget+0x1ca/0x2f0 [ 69.771820] ? __fget_light+0x166/0x200 [ 69.775778] ? __fdget+0xe/0x10 [ 69.779038] ? sockfd_lookup_light+0x1c/0x150 [ 69.783519] __sys_sendmsg+0xc1/0x140 [ 69.787297] ? SyS_shutdown+0x180/0x180 [ 69.791256] ? __sb_end_write+0xa4/0xd0 [ 69.795213] ? mutex_unlock+0xd/0x10 [ 69.798906] ? do_syscall_64+0x4c/0x5b0 [ 69.802862] ? __sys_sendmsg+0x140/0x140 [ 69.806901] SyS_sendmsg+0xd/0x20 [ 69.810331] do_syscall_64+0x1c7/0x5b0 [ 69.814196] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.819019] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 69.824195] RIP: 0033:0x459ef9 [ 69.827369] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.835054] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 69.842409] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 69.849654] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 69.856902] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 69.864150] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 69.911209] batman_adv: batadv0: Adding interface: bridge_slave_1 [ 69.917543] batman_adv: batadv0: The MTU of interface bridge_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. [ 69.943202] batman_adv: batadv0: Interface activated: bridge_slave_1 [ 69.950468] device bridge_slave_1 left promiscuous mode [ 69.956181] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.962624] FAULT_INJECTION: forcing a failure. [ 69.962624] name failslab, interval 1, probability 0, space 0, times 0 [ 69.973835] CPU: 1 PID: 7159 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 69.981618] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.990953] Call Trace: [ 69.993530] dump_stack+0xf7/0x13b [ 69.997060] should_fail.cold.3+0x105/0x14b [ 70.001371] should_failslab+0xba/0xf0 [ 70.005296] kmem_cache_alloc_node+0x56/0x790 [ 70.009778] ? br_get_link_af_size_filtered+0xb5/0x6e0 [ 70.015045] __alloc_skb+0x92/0x500 [ 70.018654] ? skb_trim+0x160/0x160 [ 70.022262] ? br_get_link_af_size_filtered+0xd2/0x6e0 [ 70.027526] br_ifinfo_notify.part.21+0x89/0x160 [ 70.032267] br_ifinfo_notify+0xe/0x20 [ 70.036139] br_stp_disable_port+0xbb/0x150 [ 70.040437] del_nbp+0x119/0x8b0 [ 70.043791] br_del_if+0xc7/0x470 [ 70.047229] br_del_slave+0x10/0x20 [ 70.050838] do_set_master+0xb6/0x1f0 [ 70.054617] do_setlink+0x9dd/0x2c50 [ 70.058314] ? trace_hardirqs_off+0x10/0x10 [ 70.062615] ? lock_downgrade+0x7f0/0x7f0 [ 70.066748] ? trace_hardirqs_off+0x10/0x10 [ 70.071058] ? rtnl_register+0x20/0x20 [ 70.074929] ? trace_hardirqs_off+0x10/0x10 [ 70.079228] ? __lock_is_held+0xb5/0x140 [ 70.083269] ? find_held_lock+0x36/0x1d0 [ 70.087310] ? __lock_acquire+0x6a4/0x4500 [ 70.091534] ? load_balance+0xb38/0x2190 [ 70.095580] ? lock_downgrade+0x7f0/0x7f0 [ 70.099704] ? lock_pin_lock+0x340/0x340 [ 70.103760] ? __lock_acquire+0x6a4/0x4500 [ 70.107984] ? trace_hardirqs_off+0x10/0x10 [ 70.112305] ? __lock_is_held+0xb5/0x140 [ 70.116353] rtnl_newlink+0xe0c/0x1390 [ 70.120229] ? trace_hardirqs_off+0x10/0x10 [ 70.124537] ? memset+0x31/0x40 [ 70.127799] ? rtnl_newlink+0x6d0/0x1390 [ 70.131845] ? rtnl_link_unregister+0x270/0x270 [ 70.136497] ? finish_task_switch+0x178/0x650 [ 70.140973] ? finish_task_switch+0x14d/0x650 [ 70.145445] ? find_held_lock+0x36/0x1d0 [ 70.149492] ? __mutex_lock+0x8b7/0x14c0 [ 70.153660] ? lock_downgrade+0x7f0/0x7f0 [ 70.157791] ? do_raw_spin_unlock+0x16a/0x250 [ 70.162281] rtnetlink_rcv_msg+0x34f/0x9d0 [ 70.166515] ? rtnl_bridge_getlink+0x760/0x760 [ 70.171078] ? find_held_lock+0x36/0x1d0 [ 70.175121] netlink_rcv_skb+0x133/0x370 [ 70.179172] ? rtnl_bridge_getlink+0x760/0x760 [ 70.183910] ? netlink_ack+0xa00/0xa00 [ 70.187787] ? netlink_deliver_tap+0x8e/0x920 [ 70.192323] rtnetlink_rcv+0x10/0x20 [ 70.196014] netlink_unicast+0x40d/0x5f0 [ 70.200077] ? netlink_attachskb+0x6e0/0x6e0 [ 70.204518] netlink_sendmsg+0x730/0xbd0 [ 70.208558] ? netlink_unicast+0x5f0/0x5f0 [ 70.212777] ? selinux_socket_sendmsg+0x31/0x40 [ 70.217427] ? security_socket_sendmsg+0x6a/0xa0 [ 70.222169] ? netlink_unicast+0x5f0/0x5f0 [ 70.226410] sock_sendmsg+0xb5/0xf0 [ 70.230022] ___sys_sendmsg+0x625/0x920 [ 70.233985] ? trace_hardirqs_off+0x10/0x10 [ 70.238284] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 70.243034] ? find_held_lock+0x36/0x1d0 [ 70.247153] ? lock_downgrade+0x7f0/0x7f0 [ 70.251293] ? __fget+0x1ca/0x2f0 [ 70.254736] ? __fget_light+0x166/0x200 [ 70.258709] ? __fdget+0xe/0x10 [ 70.261976] ? sockfd_lookup_light+0x1c/0x150 [ 70.266458] __sys_sendmsg+0xc1/0x140 [ 70.270391] ? SyS_shutdown+0x180/0x180 [ 70.274347] ? __sb_end_write+0xa4/0xd0 [ 70.278310] ? mutex_unlock+0xd/0x10 [ 70.282022] ? do_syscall_64+0x4c/0x5b0 [ 70.285993] ? __sys_sendmsg+0x140/0x140 [ 70.290047] SyS_sendmsg+0xd/0x20 [ 70.293504] do_syscall_64+0x1c7/0x5b0 [ 70.297431] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 70.302274] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 70.307447] RIP: 0033:0x459ef9 [ 70.310617] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 70.318312] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 70.325636] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 70.332903] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 70.340171] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 70.347430] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 70.401405] batman_adv: batadv0: Adding interface: bridge_slave_1 [ 70.407742] batman_adv: batadv0: The MTU of interface bridge_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. [ 70.433038] batman_adv: batadv0: Interface activated: bridge_slave_1 [ 70.440105] FAULT_INJECTION: forcing a failure. [ 70.440105] name failslab, interval 1, probability 0, space 0, times 0 [ 70.457974] CPU: 0 PID: 7161 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 70.465784] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.475118] Call Trace: [ 70.477691] dump_stack+0xf7/0x13b [ 70.481213] should_fail.cold.3+0x105/0x14b [ 70.485513] should_failslab+0xba/0xf0 [ 70.489378] kmem_cache_alloc+0x2cf/0x790 [ 70.493503] ? memcpy+0x45/0x50 [ 70.496766] ? kstrdup+0x42/0x60 [ 70.500153] __kernfs_new_node+0x63/0x470 [ 70.504279] ? lock_downgrade+0x7f0/0x7f0 [ 70.508405] kernfs_new_node+0x5e/0xe0 [ 70.512402] kernfs_create_link+0x25/0x130 [ 70.516614] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 70.521785] sysfs_create_link+0x43/0xb0 [ 70.525828] netdev_adjacent_sysfs_add+0x94/0xb0 [ 70.530564] ? napi_disable+0x80/0x80 [ 70.534344] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 70.539511] __netdev_upper_dev_link+0x174/0x1f0 [ 70.544243] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 70.548995] netdev_master_upper_dev_link+0x14/0x20 [ 70.554004] batadv_hardif_enable_interface+0x1af/0x990 [ 70.559408] batadv_softif_slave_add+0x82/0xe0 [ 70.563971] do_set_master+0x163/0x1f0 [ 70.567839] do_setlink+0x9dd/0x2c50 [ 70.571534] ? find_held_lock+0x36/0x1d0 [ 70.575576] ? rtnl_register+0x20/0x20 [ 70.579441] ? load_balance+0xb38/0x2190 [ 70.583480] ? lock_downgrade+0x7f0/0x7f0 [ 70.587790] ? lock_pin_lock+0x340/0x340 [ 70.591844] ? __lock_acquire+0x6a4/0x4500 [ 70.596129] ? trace_hardirqs_off+0x10/0x10 [ 70.600431] ? __lock_is_held+0xb5/0x140 [ 70.604562] ? trace_hardirqs_off+0x10/0x10 [ 70.608871] rtnl_newlink+0xe0c/0x1390 [ 70.612745] ? rtnl_link_unregister+0x270/0x270 [ 70.617397] ? finish_task_switch+0x178/0x650 [ 70.621870] ? finish_task_switch+0x14d/0x650 [ 70.626341] ? find_held_lock+0x36/0x1d0 [ 70.630384] ? __mutex_lock+0x8b7/0x14c0 [ 70.634421] ? lock_downgrade+0x7f0/0x7f0 [ 70.638546] ? do_raw_spin_unlock+0x16a/0x250 [ 70.643031] rtnetlink_rcv_msg+0x34f/0x9d0 [ 70.647261] ? rtnl_bridge_getlink+0x760/0x760 [ 70.651822] ? find_held_lock+0x36/0x1d0 [ 70.655864] netlink_rcv_skb+0x133/0x370 [ 70.659902] ? rtnl_bridge_getlink+0x760/0x760 [ 70.664469] ? netlink_ack+0xa00/0xa00 [ 70.668334] ? netlink_deliver_tap+0x8e/0x920 [ 70.672835] rtnetlink_rcv+0x10/0x20 [ 70.676528] netlink_unicast+0x40d/0x5f0 [ 70.680565] ? netlink_attachskb+0x6e0/0x6e0 [ 70.684951] netlink_sendmsg+0x730/0xbd0 [ 70.688988] ? netlink_unicast+0x5f0/0x5f0 [ 70.693200] ? selinux_socket_sendmsg+0x31/0x40 [ 70.697845] ? security_socket_sendmsg+0x6a/0xa0 [ 70.702600] ? netlink_unicast+0x5f0/0x5f0 [ 70.706822] sock_sendmsg+0xb5/0xf0 [ 70.710425] ___sys_sendmsg+0x625/0x920 [ 70.714378] ? trace_hardirqs_off+0x10/0x10 [ 70.718677] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 70.723429] ? find_held_lock+0x36/0x1d0 [ 70.727485] ? lock_downgrade+0x7f0/0x7f0 [ 70.731624] ? __fget+0x1ca/0x2f0 [ 70.735071] ? __fget_light+0x166/0x200 [ 70.739041] ? __fdget+0xe/0x10 [ 70.742300] ? sockfd_lookup_light+0x1c/0x150 [ 70.746782] __sys_sendmsg+0xc1/0x140 [ 70.750563] ? SyS_shutdown+0x180/0x180 [ 70.754524] ? __sb_end_write+0xa4/0xd0 [ 70.758477] ? mutex_unlock+0xd/0x10 [ 70.762172] ? do_syscall_64+0x4c/0x5b0 [ 70.766125] ? __sys_sendmsg+0x140/0x140 [ 70.770164] SyS_sendmsg+0xd/0x20 [ 70.773597] do_syscall_64+0x1c7/0x5b0 [ 70.777459] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 70.782285] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 70.787450] RIP: 0033:0x459ef9 [ 70.790615] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 70.798300] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 70.805545] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 70.812792] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 70.820039] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 70.827289] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 70.836472] device bridge_slave_1 left promiscuous mode [ 70.853349] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.859828] FAULT_INJECTION: forcing a failure. [ 70.859828] name failslab, interval 1, probability 0, space 0, times 0 [ 70.871048] CPU: 1 PID: 7164 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 70.878838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.888183] Call Trace: [ 70.890764] dump_stack+0xf7/0x13b [ 70.894295] should_fail.cold.3+0x105/0x14b [ 70.898599] should_failslab+0xba/0xf0 [ 70.902472] kmem_cache_alloc_node_trace+0x5a/0x780 [ 70.907477] __kmalloc_node_track_caller+0x3c/0x70 [ 70.912398] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 70.917146] __alloc_skb+0xc1/0x500 [ 70.920755] ? skb_trim+0x160/0x160 [ 70.924360] ? br_switchdev_set_port_flag+0x1e0/0x1e0 [ 70.929533] ? __lock_is_held+0xb5/0x140 [ 70.933590] fdb_notify+0x88/0x130 [ 70.937123] fdb_delete+0x129/0x3a0 [ 70.940736] br_fdb_delete_by_port+0x163/0x1d0 [ 70.945320] br_stp_disable_port+0xeb/0x150 [ 70.949644] del_nbp+0x119/0x8b0 [ 70.953008] br_del_if+0xc7/0x470 [ 70.956459] br_del_slave+0x10/0x20 [ 70.960080] do_set_master+0xb6/0x1f0 [ 70.963877] do_setlink+0x9dd/0x2c50 [ 70.967576] ? trace_hardirqs_off+0x10/0x10 [ 70.971876] ? lock_downgrade+0x7f0/0x7f0 [ 70.976012] ? trace_hardirqs_off+0x10/0x10 [ 70.980334] ? rtnl_register+0x20/0x20 [ 70.984208] ? trace_hardirqs_off+0x10/0x10 [ 70.988506] ? __lock_is_held+0xb5/0x140 [ 70.992558] ? find_held_lock+0x36/0x1d0 [ 70.996604] ? __lock_acquire+0x6a4/0x4500 [ 71.000821] ? load_balance+0xb38/0x2190 [ 71.004872] ? lock_downgrade+0x7f0/0x7f0 [ 71.009006] ? lock_pin_lock+0x340/0x340 [ 71.013047] ? __lock_acquire+0x6a4/0x4500 [ 71.017260] ? trace_hardirqs_off+0x10/0x10 [ 71.021707] ? __lock_is_held+0xb5/0x140 [ 71.025776] rtnl_newlink+0xe0c/0x1390 [ 71.029656] ? trace_hardirqs_off+0x10/0x10 [ 71.033978] ? memset+0x31/0x40 [ 71.037255] ? rtnl_newlink+0x6d0/0x1390 [ 71.041321] ? rtnl_link_unregister+0x270/0x270 [ 71.045979] ? finish_task_switch+0x178/0x650 [ 71.050454] ? finish_task_switch+0x14d/0x650 [ 71.054945] ? find_held_lock+0x36/0x1d0 [ 71.059000] ? __mutex_lock+0x8b7/0x14c0 [ 71.063046] ? lock_downgrade+0x7f0/0x7f0 [ 71.067184] ? do_raw_spin_unlock+0x16a/0x250 [ 71.071698] rtnetlink_rcv_msg+0x34f/0x9d0 [ 71.075932] ? rtnl_bridge_getlink+0x760/0x760 [ 71.080505] ? find_held_lock+0x36/0x1d0 [ 71.084554] netlink_rcv_skb+0x133/0x370 [ 71.088594] ? rtnl_bridge_getlink+0x760/0x760 [ 71.093151] ? netlink_ack+0xa00/0xa00 [ 71.097017] ? netlink_deliver_tap+0x8e/0x920 [ 71.101507] rtnetlink_rcv+0x10/0x20 [ 71.105206] netlink_unicast+0x40d/0x5f0 [ 71.109250] ? netlink_attachskb+0x6e0/0x6e0 [ 71.113676] netlink_sendmsg+0x730/0xbd0 [ 71.117722] ? netlink_unicast+0x5f0/0x5f0 [ 71.121941] ? selinux_socket_sendmsg+0x31/0x40 [ 71.126623] ? security_socket_sendmsg+0x6a/0xa0 [ 71.131361] ? netlink_unicast+0x5f0/0x5f0 [ 71.135577] sock_sendmsg+0xb5/0xf0 [ 71.139190] ___sys_sendmsg+0x625/0x920 [ 71.143150] ? trace_hardirqs_off+0x10/0x10 [ 71.147458] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 71.152197] ? find_held_lock+0x36/0x1d0 [ 71.156241] ? lock_downgrade+0x7f0/0x7f0 [ 71.160378] ? __fget+0x1ca/0x2f0 [ 71.163821] ? __fget_light+0x166/0x200 [ 71.167777] ? __fdget+0xe/0x10 [ 71.171080] ? sockfd_lookup_light+0x1c/0x150 [ 71.175561] __sys_sendmsg+0xc1/0x140 [ 71.179353] ? SyS_shutdown+0x180/0x180 [ 71.183316] ? __sb_end_write+0xa4/0xd0 [ 71.187280] ? mutex_unlock+0xd/0x10 [ 71.190979] ? do_syscall_64+0x4c/0x5b0 [ 71.194959] ? __sys_sendmsg+0x140/0x140 [ 71.199001] SyS_sendmsg+0xd/0x20 [ 71.202443] do_syscall_64+0x1c7/0x5b0 [ 71.206316] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 71.211138] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 71.216310] RIP: 0033:0x459ef9 [ 71.219493] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.227182] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 71.234432] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 71.241690] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 71.248951] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 71.256202] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 71.291168] batman_adv: batadv0: Adding interface: bridge_slave_1 [ 71.297502] batman_adv: batadv0: The MTU of interface bridge_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. [ 71.322776] batman_adv: batadv0: Interface activated: bridge_slave_1 [ 71.330528] FAULT_INJECTION: forcing a failure. [ 71.330528] name failslab, interval 1, probability 0, space 0, times 0 [ 71.349768] CPU: 0 PID: 7168 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 71.357584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.366935] Call Trace: [ 71.369513] dump_stack+0xf7/0x13b [ 71.373046] should_fail.cold.3+0x105/0x14b [ 71.377357] should_failslab+0xba/0xf0 [ 71.381229] kmem_cache_alloc+0x2cf/0x790 [ 71.385357] ? memcpy+0x45/0x50 [ 71.388616] ? kstrdup+0x42/0x60 [ 71.391993] __kernfs_new_node+0x63/0x470 [ 71.396127] ? lock_downgrade+0x7f0/0x7f0 [ 71.400262] kernfs_new_node+0x5e/0xe0 [ 71.404134] kernfs_create_link+0x25/0x130 [ 71.408348] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 71.413523] sysfs_create_link+0x43/0xb0 [ 71.417579] netdev_adjacent_sysfs_add+0x94/0xb0 [ 71.422318] ? napi_disable+0x80/0x80 [ 71.426162] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 71.431351] __netdev_upper_dev_link+0x174/0x1f0 [ 71.436105] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 71.440848] netdev_master_upper_dev_link+0x14/0x20 [ 71.445858] batadv_hardif_enable_interface+0x1af/0x990 [ 71.451267] batadv_softif_slave_add+0x82/0xe0 [ 71.455842] do_set_master+0x163/0x1f0 [ 71.459714] do_setlink+0x9dd/0x2c50 [ 71.463415] ? __lock_acquire+0x6a4/0x4500 [ 71.467640] ? trace_hardirqs_off+0x10/0x10 [ 71.471946] ? rtnl_register+0x20/0x20 [ 71.475843] ? trace_hardirqs_on+0x10/0x10 [ 71.480057] ? trace_hardirqs_off+0x10/0x10 [ 71.484365] ? __lock_acquire+0x6a4/0x4500 [ 71.488587] ? trace_hardirqs_off+0x10/0x10 [ 71.492885] ? __lock_is_held+0xb5/0x140 [ 71.496929] ? trace_hardirqs_off+0x10/0x10 [ 71.501242] rtnl_newlink+0xe0c/0x1390 [ 71.505123] ? rtnl_link_unregister+0x270/0x270 [ 71.509773] ? finish_task_switch+0x178/0x650 [ 71.514259] ? finish_task_switch+0x14d/0x650 [ 71.518740] ? find_held_lock+0x36/0x1d0 [ 71.522784] ? __mutex_lock+0x8b7/0x14c0 [ 71.526824] ? lock_downgrade+0x7f0/0x7f0 [ 71.530960] ? do_raw_spin_unlock+0x16a/0x250 [ 71.535458] rtnetlink_rcv_msg+0x34f/0x9d0 [ 71.539680] ? rtnl_bridge_getlink+0x760/0x760 [ 71.544259] ? find_held_lock+0x36/0x1d0 [ 71.548301] netlink_rcv_skb+0x133/0x370 [ 71.552339] ? rtnl_bridge_getlink+0x760/0x760 [ 71.556958] ? netlink_ack+0xa00/0xa00 [ 71.560832] ? netlink_deliver_tap+0x8e/0x920 [ 71.565327] rtnetlink_rcv+0x10/0x20 [ 71.569026] netlink_unicast+0x40d/0x5f0 [ 71.573077] ? netlink_attachskb+0x6e0/0x6e0 [ 71.577477] netlink_sendmsg+0x730/0xbd0 [ 71.581524] ? netlink_unicast+0x5f0/0x5f0 [ 71.585744] ? selinux_socket_sendmsg+0x31/0x40 [ 71.590403] ? security_socket_sendmsg+0x6a/0xa0 [ 71.595134] ? netlink_unicast+0x5f0/0x5f0 [ 71.599349] sock_sendmsg+0xb5/0xf0 [ 71.603041] ___sys_sendmsg+0x625/0x920 [ 71.606993] ? trace_hardirqs_off+0x10/0x10 [ 71.611400] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 71.616138] ? find_held_lock+0x36/0x1d0 [ 71.620187] ? lock_downgrade+0x7f0/0x7f0 [ 71.624317] ? __fget+0x1ca/0x2f0 [ 71.627751] ? __fget_light+0x166/0x200 [ 71.631753] ? __fdget+0xe/0x10 [ 71.635013] ? sockfd_lookup_light+0x1c/0x150 [ 71.639487] __sys_sendmsg+0xc1/0x140 [ 71.643267] ? SyS_shutdown+0x180/0x180 [ 71.647225] ? __sb_end_write+0xa4/0xd0 [ 71.651201] ? mutex_unlock+0xd/0x10 [ 71.654915] ? do_syscall_64+0x4c/0x5b0 [ 71.658871] ? __sys_sendmsg+0x140/0x140 [ 71.662911] SyS_sendmsg+0xd/0x20 [ 71.666342] do_syscall_64+0x1c7/0x5b0 [ 71.670210] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 71.675086] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 71.680255] RIP: 0033:0x459ef9 [ 71.683428] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.691112] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 71.698358] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 71.705607] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 71.712857] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 71.720106] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 71.727760] FAULT_INJECTION: forcing a failure. [ 71.727760] name failslab, interval 1, probability 0, space 0, times 0 [ 71.738990] CPU: 0 PID: 7172 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 71.746773] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.756120] Call Trace: [ 71.758705] dump_stack+0xf7/0x13b [ 71.762242] should_fail.cold.3+0x105/0x14b [ 71.766558] should_failslab+0xba/0xf0 [ 71.770428] kmem_cache_alloc_node+0x287/0x790 [ 71.774998] __alloc_skb+0x92/0x500 [ 71.778603] ? skb_trim+0x160/0x160 [ 71.782210] ? if_nlmsg_size+0x2d9/0x6f0 [ 71.786251] rtmsg_ifinfo_build_skb+0x68/0x120 [ 71.790865] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 71.795702] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 71.800614] rtnetlink_event+0xc2/0x110 [ 71.804574] notifier_call_chain+0xd6/0x150 [ 71.808883] raw_notifier_call_chain+0x11/0x20 [ 71.813456] call_netdevice_notifiers_info+0x4b/0x60 [ 71.818574] __netdev_upper_dev_link+0x18e/0x1f0 [ 71.823342] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 71.828097] netdev_master_upper_dev_link+0x14/0x20 [ 71.833099] batadv_hardif_enable_interface+0x1af/0x990 [ 71.838441] batadv_softif_slave_add+0x82/0xe0 [ 71.843004] do_set_master+0x163/0x1f0 [ 71.846874] do_setlink+0x9dd/0x2c50 [ 71.850573] ? find_held_lock+0x36/0x1d0 [ 71.854619] ? rtnl_register+0x20/0x20 [ 71.858490] ? load_balance+0xb38/0x2190 [ 71.862527] ? lock_downgrade+0x7f0/0x7f0 [ 71.866655] ? lock_pin_lock+0x340/0x340 [ 71.870698] ? __lock_acquire+0x6a4/0x4500 [ 71.874910] ? trace_hardirqs_off+0x10/0x10 [ 71.879213] ? __lock_is_held+0xb5/0x140 [ 71.883261] ? trace_hardirqs_off+0x10/0x10 [ 71.887567] rtnl_newlink+0xe0c/0x1390 [ 71.891440] ? rtnl_link_unregister+0x270/0x270 [ 71.896088] ? finish_task_switch+0x178/0x650 [ 71.900556] ? finish_task_switch+0x14d/0x650 [ 71.905032] ? find_held_lock+0x36/0x1d0 [ 71.909072] ? __mutex_lock+0x8b7/0x14c0 [ 71.913110] ? lock_downgrade+0x7f0/0x7f0 [ 71.917235] ? do_raw_spin_unlock+0x16a/0x250 [ 71.921722] rtnetlink_rcv_msg+0x34f/0x9d0 [ 71.925939] ? rtnl_bridge_getlink+0x760/0x760 [ 71.930504] ? find_held_lock+0x36/0x1d0 [ 71.934556] netlink_rcv_skb+0x133/0x370 [ 71.938595] ? rtnl_bridge_getlink+0x760/0x760 [ 71.943157] ? netlink_ack+0xa00/0xa00 [ 71.947037] ? netlink_deliver_tap+0x8e/0x920 [ 71.951510] rtnetlink_rcv+0x10/0x20 [ 71.955202] netlink_unicast+0x40d/0x5f0 [ 71.959244] ? netlink_attachskb+0x6e0/0x6e0 [ 71.963629] netlink_sendmsg+0x730/0xbd0 [ 71.967682] ? netlink_unicast+0x5f0/0x5f0 [ 71.971910] ? selinux_socket_sendmsg+0x31/0x40 [ 71.976568] ? security_socket_sendmsg+0x6a/0xa0 [ 71.981301] ? netlink_unicast+0x5f0/0x5f0 [ 71.985514] sock_sendmsg+0xb5/0xf0 [ 71.989119] ___sys_sendmsg+0x625/0x920 [ 71.993086] ? trace_hardirqs_off+0x10/0x10 [ 71.997393] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 72.002135] ? find_held_lock+0x36/0x1d0 [ 72.006200] ? lock_downgrade+0x7f0/0x7f0 [ 72.010340] ? __fget+0x1ca/0x2f0 [ 72.013781] ? __fget_light+0x166/0x200 [ 72.017743] ? __fdget+0xe/0x10 [ 72.021056] ? sockfd_lookup_light+0x1c/0x150 [ 72.025532] __sys_sendmsg+0xc1/0x140 [ 72.029310] ? SyS_shutdown+0x180/0x180 [ 72.033261] ? __sb_end_write+0xa4/0xd0 [ 72.037215] ? mutex_unlock+0xd/0x10 [ 72.040920] ? do_syscall_64+0x4c/0x5b0 [ 72.044880] ? __sys_sendmsg+0x140/0x140 [ 72.048915] SyS_sendmsg+0xd/0x20 [ 72.052354] do_syscall_64+0x1c7/0x5b0 [ 72.056222] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 72.061043] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 72.066211] RIP: 0033:0x459ef9 [ 72.069379] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.077065] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 72.084317] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 72.091578] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 72.098834] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 72.106192] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 72.114988] batman_adv: batadv0: Adding interface: hsr_slave_0 [ 72.121389] batman_adv: batadv0: The MTU of interface hsr_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. [ 72.146347] batman_adv: batadv0: Interface activated: hsr_slave_0 [ 72.153471] FAULT_INJECTION: forcing a failure. [ 72.153471] name failslab, interval 1, probability 0, space 0, times 0 [ 72.164749] CPU: 0 PID: 7175 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 72.172541] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.181933] Call Trace: [ 72.184502] dump_stack+0xf7/0x13b [ 72.188022] should_fail.cold.3+0x105/0x14b [ 72.192333] should_failslab+0xba/0xf0 [ 72.196216] kmem_cache_alloc_trace+0x2ea/0x7a0 [ 72.200885] ? __wake_up+0xe/0x10 [ 72.204329] ? netlink_broadcast_filtered+0x297/0x8f0 [ 72.209497] ? __alloc_skb+0x308/0x500 [ 72.213366] netdevice_event+0x16b/0x6d0 [ 72.217413] ? update_gid_event_work_handler+0xb0/0xb0 [ 72.222675] ? add_netdev_upper_ips+0x20/0x20 [ 72.227212] ? inetaddr_event+0x190/0x190 [ 72.231344] ? _add_netdev_ips+0x30/0x30 [ 72.235384] ? is_eth_port_of_netdev.part.7+0x1e0/0x1e0 [ 72.240735] ? rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 72.245757] notifier_call_chain+0xd6/0x150 [ 72.250065] raw_notifier_call_chain+0x11/0x20 [ 72.254680] call_netdevice_notifiers_info+0x4b/0x60 [ 72.259780] netdev_upper_dev_unlink+0xab/0xe0 [ 72.264367] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30 [ 72.270417] bond_upper_dev_unlink.isra.45+0x33/0xc0 [ 72.275502] __bond_release_one+0x2c2/0x1370 [ 72.279897] ? trace_hardirqs_on+0x10/0x10 [ 72.284121] ? bond_enslave+0x4a80/0x4a80 [ 72.288249] ? find_held_lock+0x36/0x1d0 [ 72.292291] ? trace_hardirqs_off+0x10/0x10 [ 72.296601] ? trace_hardirqs_off+0x10/0x10 [ 72.300910] ? trace_hardirqs_off+0x10/0x10 [ 72.305211] ? lock_downgrade+0x7f0/0x7f0 [ 72.309339] ? trace_hardirqs_off+0x10/0x10 [ 72.313648] bond_release+0xd/0x10 [ 72.317169] do_set_master+0xb6/0x1f0 [ 72.320954] do_setlink+0x9dd/0x2c50 [ 72.324657] ? rtnl_register+0x20/0x20 [ 72.328527] ? __lock_acquire+0x6a4/0x4500 [ 72.332748] ? load_balance+0xb38/0x2190 [ 72.336786] ? lock_downgrade+0x7f0/0x7f0 [ 72.340931] ? lock_pin_lock+0x340/0x340 [ 72.344992] ? __lock_acquire+0x6a4/0x4500 [ 72.349319] ? trace_hardirqs_off+0x10/0x10 [ 72.353631] ? __lock_is_held+0xb5/0x140 [ 72.357680] ? trace_hardirqs_off+0x10/0x10 [ 72.361988] ? __lock_acquire+0x6a4/0x4500 [ 72.366207] rtnl_newlink+0xe0c/0x1390 [ 72.370103] ? memset+0x31/0x40 [ 72.373385] ? rtnl_newlink+0x6d0/0x1390 [ 72.377440] ? rtnl_link_unregister+0x270/0x270 [ 72.382088] ? find_held_lock+0x36/0x1d0 [ 72.386130] ? find_held_lock+0x36/0x1d0 [ 72.390185] ? __mutex_lock+0x8b7/0x14c0 [ 72.394227] ? lock_downgrade+0x7f0/0x7f0 [ 72.398354] ? do_raw_spin_unlock+0x16a/0x250 [ 72.402840] rtnetlink_rcv_msg+0x34f/0x9d0 [ 72.407052] ? rtnl_bridge_getlink+0x760/0x760 [ 72.411615] ? find_held_lock+0x36/0x1d0 [ 72.415666] netlink_rcv_skb+0x133/0x370 [ 72.419755] ? rtnl_bridge_getlink+0x760/0x760 [ 72.424339] ? netlink_ack+0xa00/0xa00 [ 72.428221] ? netlink_deliver_tap+0x8e/0x920 [ 72.432711] rtnetlink_rcv+0x10/0x20 [ 72.436425] netlink_unicast+0x40d/0x5f0 [ 72.440477] ? netlink_attachskb+0x6e0/0x6e0 [ 72.444882] netlink_sendmsg+0x730/0xbd0 [ 72.448933] ? netlink_unicast+0x5f0/0x5f0 [ 72.453153] ? selinux_socket_sendmsg+0x31/0x40 [ 72.457802] ? security_socket_sendmsg+0x6a/0xa0 [ 72.462552] ? netlink_unicast+0x5f0/0x5f0 [ 72.466764] sock_sendmsg+0xb5/0xf0 [ 72.470374] ___sys_sendmsg+0x625/0x920 [ 72.474351] ? trace_hardirqs_off+0x10/0x10 [ 72.478652] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 72.483385] ? find_held_lock+0x36/0x1d0 [ 72.487426] ? lock_downgrade+0x7f0/0x7f0 [ 72.491557] ? __fget+0x1ca/0x2f0 [ 72.494990] ? __fget_light+0x166/0x200 [ 72.498959] ? __fdget+0xe/0x10 [ 72.502267] ? sockfd_lookup_light+0x1c/0x150 [ 72.506773] __sys_sendmsg+0xc1/0x140 [ 72.510564] ? SyS_shutdown+0x180/0x180 [ 72.514531] ? __sb_end_write+0xa4/0xd0 [ 72.518497] ? mutex_unlock+0xd/0x10 [ 72.522201] ? do_syscall_64+0x4c/0x5b0 [ 72.526185] ? __sys_sendmsg+0x140/0x140 [ 72.530239] SyS_sendmsg+0xd/0x20 [ 72.533686] do_syscall_64+0x1c7/0x5b0 [ 72.537554] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 72.542387] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 72.547566] RIP: 0033:0x459ef9 [ 72.550740] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.558440] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 72.565701] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 72.572974] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 72.580230] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 72.587492] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 72.595236] bond0: Releasing backup interface bond_slave_0 [ 72.652223] batman_adv: batadv0: Adding interface: bond_slave_0 [ 72.658404] batman_adv: batadv0: The MTU of interface bond_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. [ 72.683505] batman_adv: batadv0: Not using interface bond_slave_0 (retrying later): interface not active [ 72.693651] FAULT_INJECTION: forcing a failure. 2020/02/11 23:04:41 executed programs: 93 [ 72.693651] name failslab, interval 1, probability 0, space 0, times 0 [ 72.705902] CPU: 1 PID: 7178 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 72.713713] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.723067] Call Trace: [ 72.725658] dump_stack+0xf7/0x13b [ 72.729208] should_fail.cold.3+0x105/0x14b [ 72.733540] should_failslab+0xba/0xf0 [ 72.737490] kmem_cache_alloc_node+0x287/0x790 [ 72.742068] __alloc_skb+0x92/0x500 [ 72.745676] ? skb_trim+0x160/0x160 [ 72.749283] ? if_nlmsg_size+0x2d9/0x6f0 [ 72.753326] rtmsg_ifinfo_build_skb+0x68/0x120 [ 72.758002] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 72.762836] rtmsg_ifinfo+0x4a/0x70 [ 72.766446] bond_upper_dev_unlink.isra.45+0x95/0xc0 [ 72.771538] __bond_release_one+0x2c2/0x1370 [ 72.776051] ? bond_enslave+0x4a80/0x4a80 [ 72.780248] ? cpumask_next+0x21/0x30 [ 72.784064] ? cpumask_next_and+0x4d/0x90 [ 72.788219] ? find_busiest_group+0x374/0x2b00 [ 72.792794] ? __lock_acquire+0x6a4/0x4500 [ 72.797026] bond_release+0xd/0x10 [ 72.800551] do_set_master+0xb6/0x1f0 [ 72.804348] do_setlink+0x9dd/0x2c50 [ 72.808051] ? __lock_acquire+0x6a4/0x4500 [ 72.812273] ? rtnl_register+0x20/0x20 [ 72.816145] ? __lock_acquire+0x6a4/0x4500 [ 72.820376] ? __lock_acquire+0x6a4/0x4500 [ 72.824605] ? trace_hardirqs_off+0x10/0x10 [ 72.828907] ? trace_hardirqs_off+0x10/0x10 [ 72.833220] rtnl_newlink+0xe0c/0x1390 [ 72.837088] ? memset+0x31/0x40 [ 72.840354] ? rtnl_newlink+0x6d0/0x1390 [ 72.844406] ? rtnl_link_unregister+0x270/0x270 [ 72.849064] ? finish_task_switch+0x178/0x650 [ 72.853646] ? finish_task_switch+0x14d/0x650 [ 72.858130] ? find_held_lock+0x36/0x1d0 [ 72.862206] ? __mutex_lock+0x8b7/0x14c0 [ 72.866249] ? lock_downgrade+0x7f0/0x7f0 [ 72.870392] ? do_raw_spin_unlock+0x16a/0x250 [ 72.874911] rtnetlink_rcv_msg+0x34f/0x9d0 [ 72.879130] ? rtnl_bridge_getlink+0x760/0x760 [ 72.883694] ? find_held_lock+0x36/0x1d0 [ 72.887736] netlink_rcv_skb+0x133/0x370 [ 72.891786] ? rtnl_bridge_getlink+0x760/0x760 [ 72.896355] ? netlink_ack+0xa00/0xa00 [ 72.900230] ? netlink_deliver_tap+0x8e/0x920 [ 72.904717] rtnetlink_rcv+0x10/0x20 [ 72.908433] netlink_unicast+0x40d/0x5f0 [ 72.912490] ? netlink_attachskb+0x6e0/0x6e0 [ 72.916884] netlink_sendmsg+0x730/0xbd0 [ 72.920931] ? netlink_unicast+0x5f0/0x5f0 [ 72.925145] ? selinux_socket_sendmsg+0x31/0x40 [ 72.929821] ? security_socket_sendmsg+0x6a/0xa0 [ 72.934584] ? netlink_unicast+0x5f0/0x5f0 [ 72.938801] sock_sendmsg+0xb5/0xf0 [ 72.942410] ___sys_sendmsg+0x625/0x920 [ 72.946369] ? trace_hardirqs_off+0x10/0x10 [ 72.950679] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 72.955423] ? find_held_lock+0x36/0x1d0 [ 72.959599] ? lock_downgrade+0x7f0/0x7f0 [ 72.963749] ? __fget+0x1ca/0x2f0 [ 72.967182] ? __fget_light+0x166/0x200 [ 72.971148] ? __fdget+0xe/0x10 [ 72.974412] ? sockfd_lookup_light+0x1c/0x150 [ 72.978885] __sys_sendmsg+0xc1/0x140 [ 72.982668] ? SyS_shutdown+0x180/0x180 [ 72.986626] ? __sb_end_write+0xa4/0xd0 [ 72.990590] ? mutex_unlock+0xd/0x10 [ 72.994299] ? do_syscall_64+0x4c/0x5b0 [ 72.998252] ? __sys_sendmsg+0x140/0x140 [ 73.002295] SyS_sendmsg+0xd/0x20 [ 73.005743] do_syscall_64+0x1c7/0x5b0 [ 73.009606] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 73.014436] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 73.019603] RIP: 0033:0x459ef9 [ 73.022779] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.030468] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 73.037723] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 73.044971] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 73.052224] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 73.059495] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 73.068304] bond0: Releasing backup interface bond_slave_0 [ 73.101757] batman_adv: batadv0: Adding interface: bond_slave_0 [ 73.107911] batman_adv: batadv0: The MTU of interface bond_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. [ 73.133413] batman_adv: batadv0: Not using interface bond_slave_0 (retrying later): interface not active [ 73.143399] FAULT_INJECTION: forcing a failure. [ 73.143399] name failslab, interval 1, probability 0, space 0, times 0 [ 73.159406] CPU: 0 PID: 7181 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 73.167232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.176591] Call Trace: [ 73.179173] dump_stack+0xf7/0x13b [ 73.182696] should_fail.cold.3+0x105/0x14b [ 73.187010] should_failslab+0xba/0xf0 [ 73.190884] kmem_cache_alloc_node+0x287/0x790 [ 73.195460] __alloc_skb+0x92/0x500 [ 73.199085] ? skb_trim+0x160/0x160 [ 73.202701] ? if_nlmsg_size+0x2d9/0x6f0 [ 73.206754] rtmsg_ifinfo_build_skb+0x68/0x120 [ 73.211333] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 73.216263] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 73.221182] rtnetlink_event+0xc2/0x110 [ 73.225147] notifier_call_chain+0xd6/0x150 [ 73.229451] raw_notifier_call_chain+0x11/0x20 [ 73.234014] call_netdevice_notifiers_info+0x4b/0x60 [ 73.239115] __netdev_upper_dev_link+0x18e/0x1f0 [ 73.243850] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 73.248599] netdev_master_upper_dev_link+0x14/0x20 [ 73.253595] batadv_hardif_enable_interface+0x1af/0x990 [ 73.258942] batadv_softif_slave_add+0x82/0xe0 [ 73.263504] do_set_master+0x163/0x1f0 [ 73.267384] do_setlink+0x9dd/0x2c50 [ 73.271084] ? find_held_lock+0x36/0x1d0 [ 73.275133] ? rtnl_register+0x20/0x20 [ 73.279004] ? load_balance+0xb38/0x2190 [ 73.283063] ? lock_downgrade+0x7f0/0x7f0 [ 73.287201] ? lock_pin_lock+0x340/0x340 [ 73.291263] ? __lock_acquire+0x6a4/0x4500 [ 73.295478] ? trace_hardirqs_off+0x10/0x10 [ 73.299794] ? __lock_is_held+0xb5/0x140 [ 73.303851] ? trace_hardirqs_off+0x10/0x10 [ 73.308161] rtnl_newlink+0xe0c/0x1390 [ 73.312037] ? rtnl_link_unregister+0x270/0x270 [ 73.316686] ? finish_task_switch+0x178/0x650 [ 73.321169] ? finish_task_switch+0x14d/0x650 [ 73.325666] ? find_held_lock+0x36/0x1d0 [ 73.329722] ? __mutex_lock+0x8b7/0x14c0 [ 73.333774] ? lock_downgrade+0x7f0/0x7f0 [ 73.337908] ? do_raw_spin_unlock+0x16a/0x250 [ 73.342404] rtnetlink_rcv_msg+0x34f/0x9d0 [ 73.346667] ? rtnl_bridge_getlink+0x760/0x760 [ 73.351233] ? find_held_lock+0x36/0x1d0 [ 73.355284] netlink_rcv_skb+0x133/0x370 [ 73.359340] ? rtnl_bridge_getlink+0x760/0x760 [ 73.363900] ? netlink_ack+0xa00/0xa00 [ 73.367832] ? netlink_deliver_tap+0x8e/0x920 [ 73.372314] rtnetlink_rcv+0x10/0x20 [ 73.376009] netlink_unicast+0x40d/0x5f0 [ 73.380061] ? netlink_attachskb+0x6e0/0x6e0 [ 73.384457] netlink_sendmsg+0x730/0xbd0 [ 73.388504] ? netlink_unicast+0x5f0/0x5f0 [ 73.392725] ? selinux_socket_sendmsg+0x31/0x40 [ 73.397480] ? security_socket_sendmsg+0x6a/0xa0 [ 73.402328] ? netlink_unicast+0x5f0/0x5f0 [ 73.406551] sock_sendmsg+0xb5/0xf0 [ 73.410172] ___sys_sendmsg+0x625/0x920 [ 73.414158] ? trace_hardirqs_off+0x10/0x10 [ 73.418468] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 73.423213] ? find_held_lock+0x36/0x1d0 [ 73.427271] ? lock_downgrade+0x7f0/0x7f0 [ 73.431421] ? __fget+0x1ca/0x2f0 [ 73.434865] ? __fget_light+0x166/0x200 [ 73.438825] ? __fdget+0xe/0x10 [ 73.442091] ? sockfd_lookup_light+0x1c/0x150 [ 73.446572] __sys_sendmsg+0xc1/0x140 [ 73.450423] ? SyS_shutdown+0x180/0x180 [ 73.454383] ? __sb_end_write+0xa4/0xd0 [ 73.458340] ? mutex_unlock+0xd/0x10 [ 73.462043] ? do_syscall_64+0x4c/0x5b0 [ 73.466031] ? __sys_sendmsg+0x140/0x140 [ 73.470082] SyS_sendmsg+0xd/0x20 [ 73.473659] do_syscall_64+0x1c7/0x5b0 [ 73.477532] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 73.482376] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 73.487608] RIP: 0033:0x459ef9 [ 73.490779] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.498469] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 73.505724] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 73.512989] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 73.520260] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 73.527523] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 73.535922] batman_adv: batadv0: Adding interface: veth1_to_bond [ 73.542133] batman_adv: batadv0: The MTU of interface veth1_to_bond 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. [ 73.567419] batman_adv: batadv0: Interface activated: veth1_to_bond [ 73.574857] FAULT_INJECTION: forcing a failure. [ 73.574857] name failslab, interval 1, probability 0, space 0, times 0 [ 73.591277] CPU: 1 PID: 7184 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 73.599135] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.608488] Call Trace: [ 73.611061] dump_stack+0xf7/0x13b [ 73.614591] should_fail.cold.3+0x105/0x14b [ 73.618903] should_failslab+0xba/0xf0 [ 73.622785] kmem_cache_alloc_node+0x287/0x790 [ 73.627360] __alloc_skb+0x92/0x500 [ 73.630982] ? skb_trim+0x160/0x160 [ 73.634597] ? if_nlmsg_size+0x2d9/0x6f0 [ 73.638641] rtmsg_ifinfo_build_skb+0x68/0x120 [ 73.643215] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 73.648048] rtmsg_ifinfo+0x4a/0x70 [ 73.651668] bond_upper_dev_unlink.isra.45+0x95/0xc0 [ 73.656771] __bond_release_one+0x2c2/0x1370 [ 73.661266] ? trace_hardirqs_on+0x10/0x10 [ 73.665489] ? bond_enslave+0x4a80/0x4a80 [ 73.669673] ? find_held_lock+0x36/0x1d0 [ 73.673740] ? trace_hardirqs_off+0x10/0x10 [ 73.678107] ? trace_hardirqs_off+0x10/0x10 [ 73.682426] ? trace_hardirqs_off+0x10/0x10 [ 73.686735] ? lock_downgrade+0x7f0/0x7f0 [ 73.690873] bond_release+0xd/0x10 [ 73.694450] do_set_master+0xb6/0x1f0 [ 73.698244] do_setlink+0x9dd/0x2c50 [ 73.702054] ? rtnl_register+0x20/0x20 [ 73.705940] ? __lock_acquire+0x6a4/0x4500 [ 73.710171] ? load_balance+0xb38/0x2190 [ 73.714219] ? lock_downgrade+0x7f0/0x7f0 [ 73.718454] ? lock_pin_lock+0x340/0x340 [ 73.722505] ? __lock_acquire+0x6a4/0x4500 [ 73.726735] ? trace_hardirqs_off+0x10/0x10 [ 73.731043] ? __lock_is_held+0xb5/0x140 [ 73.735100] ? trace_hardirqs_off+0x10/0x10 [ 73.739423] rtnl_newlink+0xe0c/0x1390 [ 73.743301] ? memset+0x31/0x40 [ 73.746566] ? rtnl_newlink+0x6d0/0x1390 [ 73.750620] ? rtnl_link_unregister+0x270/0x270 [ 73.755276] ? finish_task_switch+0x178/0x650 [ 73.759755] ? finish_task_switch+0x14d/0x650 [ 73.764240] ? find_held_lock+0x36/0x1d0 [ 73.768294] ? __mutex_lock+0x8b7/0x14c0 [ 73.772347] ? lock_downgrade+0x7f0/0x7f0 [ 73.776481] ? do_raw_spin_unlock+0x16a/0x250 [ 73.780984] rtnetlink_rcv_msg+0x34f/0x9d0 [ 73.785208] ? rtnl_bridge_getlink+0x760/0x760 [ 73.789880] ? find_held_lock+0x36/0x1d0 [ 73.793938] netlink_rcv_skb+0x133/0x370 [ 73.798105] ? rtnl_bridge_getlink+0x760/0x760 [ 73.802680] ? netlink_ack+0xa00/0xa00 [ 73.806554] ? netlink_deliver_tap+0x8e/0x920 [ 73.811043] rtnetlink_rcv+0x10/0x20 [ 73.814749] netlink_unicast+0x40d/0x5f0 [ 73.818799] ? netlink_attachskb+0x6e0/0x6e0 [ 73.823312] netlink_sendmsg+0x730/0xbd0 [ 73.827363] ? netlink_unicast+0x5f0/0x5f0 [ 73.831587] ? selinux_socket_sendmsg+0x31/0x40 [ 73.836283] ? security_socket_sendmsg+0x6a/0xa0 [ 73.841035] ? netlink_unicast+0x5f0/0x5f0 [ 73.845396] sock_sendmsg+0xb5/0xf0 [ 73.849016] ___sys_sendmsg+0x625/0x920 [ 73.852977] ? trace_hardirqs_off+0x10/0x10 [ 73.857286] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 73.862140] ? find_held_lock+0x36/0x1d0 [ 73.866197] ? lock_downgrade+0x7f0/0x7f0 [ 73.870338] ? __fget+0x1ca/0x2f0 [ 73.873783] ? __fget_light+0x166/0x200 [ 73.877745] ? __fdget+0xe/0x10 [ 73.881010] ? sockfd_lookup_light+0x1c/0x150 [ 73.885498] __sys_sendmsg+0xc1/0x140 [ 73.889296] ? SyS_shutdown+0x180/0x180 [ 73.893286] ? __sb_end_write+0xa4/0xd0 [ 73.897303] ? mutex_unlock+0xd/0x10 [ 73.901056] ? do_syscall_64+0x4c/0x5b0 [ 73.905034] ? __sys_sendmsg+0x140/0x140 [ 73.909087] SyS_sendmsg+0xd/0x20 [ 73.912529] do_syscall_64+0x1c7/0x5b0 [ 73.916467] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 73.921346] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 73.926522] RIP: 0033:0x459ef9 [ 73.929703] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.937407] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 73.944761] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 73.952016] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 73.959270] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 73.966528] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 73.974907] bond0: Releasing backup interface bond_slave_0 [ 74.032113] batman_adv: batadv0: Adding interface: bond_slave_0 [ 74.038290] batman_adv: batadv0: The MTU of interface bond_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. [ 74.063378] batman_adv: batadv0: Not using interface bond_slave_0 (retrying later): interface not active [ 74.073699] FAULT_INJECTION: forcing a failure. [ 74.073699] name failslab, interval 1, probability 0, space 0, times 0 [ 74.091227] CPU: 1 PID: 7187 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 74.099047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.108389] Call Trace: [ 74.110959] dump_stack+0xf7/0x13b [ 74.114493] should_fail.cold.3+0x105/0x14b [ 74.118810] should_failslab+0xba/0xf0 [ 74.122689] kmem_cache_alloc_node+0x287/0x790 [ 74.127263] __alloc_skb+0x92/0x500 [ 74.130879] ? skb_trim+0x160/0x160 [ 74.134495] ? if_nlmsg_size+0x2d9/0x6f0 [ 74.138537] rtmsg_ifinfo_build_skb+0x68/0x120 [ 74.143102] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 74.147967] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 74.152881] rtnetlink_event+0xc2/0x110 [ 74.156855] notifier_call_chain+0xd6/0x150 [ 74.161169] raw_notifier_call_chain+0x11/0x20 [ 74.165778] call_netdevice_notifiers_info+0x4b/0x60 [ 74.170866] __netdev_upper_dev_link+0x18e/0x1f0 [ 74.175608] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 74.180344] netdev_master_upper_dev_link+0x14/0x20 [ 74.185350] batadv_hardif_enable_interface+0x1af/0x990 [ 74.190707] batadv_softif_slave_add+0x82/0xe0 [ 74.195280] do_set_master+0x163/0x1f0 [ 74.199148] do_setlink+0x9dd/0x2c50 [ 74.202842] ? find_held_lock+0x36/0x1d0 [ 74.206937] ? rtnl_register+0x20/0x20 [ 74.210805] ? load_balance+0xb38/0x2190 [ 74.214850] ? lock_downgrade+0x7f0/0x7f0 [ 74.218985] ? lock_pin_lock+0x340/0x340 [ 74.223056] ? __lock_acquire+0x6a4/0x4500 [ 74.227270] ? trace_hardirqs_off+0x10/0x10 [ 74.231579] ? __lock_is_held+0xb5/0x140 [ 74.235631] ? trace_hardirqs_off+0x10/0x10 [ 74.239934] ? trace_hardirqs_off+0x10/0x10 [ 74.244241] rtnl_newlink+0xe0c/0x1390 [ 74.248125] ? rtnl_link_unregister+0x270/0x270 [ 74.252782] ? finish_task_switch+0x178/0x650 [ 74.257260] ? finish_task_switch+0x14d/0x650 [ 74.261901] ? find_held_lock+0x36/0x1d0 [ 74.265956] ? __mutex_lock+0x8b7/0x14c0 [ 74.270012] ? lock_downgrade+0x7f0/0x7f0 [ 74.274152] ? do_raw_spin_unlock+0x16a/0x250 [ 74.278646] rtnetlink_rcv_msg+0x34f/0x9d0 [ 74.282867] ? rtnl_bridge_getlink+0x760/0x760 [ 74.287435] ? find_held_lock+0x36/0x1d0 [ 74.291483] netlink_rcv_skb+0x133/0x370 [ 74.295555] ? rtnl_bridge_getlink+0x760/0x760 [ 74.300126] ? netlink_ack+0xa00/0xa00 [ 74.304055] ? netlink_deliver_tap+0x8e/0x920 [ 74.308533] rtnetlink_rcv+0x10/0x20 [ 74.312227] netlink_unicast+0x40d/0x5f0 [ 74.316272] ? netlink_attachskb+0x6e0/0x6e0 [ 74.320667] netlink_sendmsg+0x730/0xbd0 [ 74.324713] ? netlink_unicast+0x5f0/0x5f0 [ 74.328933] ? selinux_socket_sendmsg+0x31/0x40 [ 74.333580] ? security_socket_sendmsg+0x6a/0xa0 [ 74.338316] ? netlink_unicast+0x5f0/0x5f0 [ 74.342536] sock_sendmsg+0xb5/0xf0 [ 74.346156] ___sys_sendmsg+0x625/0x920 [ 74.350119] ? trace_hardirqs_off+0x10/0x10 [ 74.354471] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 74.359218] ? find_held_lock+0x36/0x1d0 [ 74.363267] ? lock_downgrade+0x7f0/0x7f0 [ 74.367401] ? __fget+0x1ca/0x2f0 [ 74.370839] ? __fget_light+0x166/0x200 [ 74.374798] ? __fdget+0xe/0x10 [ 74.378069] ? sockfd_lookup_light+0x1c/0x150 [ 74.382563] __sys_sendmsg+0xc1/0x140 [ 74.386352] ? SyS_shutdown+0x180/0x180 [ 74.390316] ? __sb_end_write+0xa4/0xd0 [ 74.394281] ? mutex_unlock+0xd/0x10 [ 74.397990] ? do_syscall_64+0x4c/0x5b0 [ 74.401965] ? __sys_sendmsg+0x140/0x140 [ 74.406020] SyS_sendmsg+0xd/0x20 [ 74.409455] do_syscall_64+0x1c7/0x5b0 [ 74.413328] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 74.418158] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 74.423328] RIP: 0033:0x459ef9 [ 74.426512] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 74.434203] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 74.441455] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 74.448730] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 74.455986] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 74.463246] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 74.472677] batman_adv: batadv0: Adding interface: veth1_to_bridge [ 74.479109] batman_adv: batadv0: The MTU of interface veth1_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. [ 74.505297] batman_adv: batadv0: Interface activated: veth1_to_bridge [ 74.512751] FAULT_INJECTION: forcing a failure. [ 74.512751] name failslab, interval 1, probability 0, space 0, times 0 [ 74.525914] CPU: 0 PID: 7190 Comm: syz-executor.4 Not tainted 4.14.170-syzkaller #0 [ 74.533727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.543075] Call Trace: [ 74.545664] dump_stack+0xf7/0x13b [ 74.549203] should_fail.cold.3+0x105/0x14b [ 74.553517] should_failslab+0xba/0xf0 [ 74.557396] kmem_cache_alloc_node+0x287/0x790 [ 74.561992] __alloc_skb+0x92/0x500 [ 74.565618] ? skb_trim+0x160/0x160 [ 74.569233] ? if_nlmsg_size+0x2d9/0x6f0 [ 74.573282] rtmsg_ifinfo_build_skb+0x68/0x120 [ 74.577856] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 74.582692] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 74.587606] rtnetlink_event+0xc2/0x110 [ 74.591577] notifier_call_chain+0xd6/0x150 [ 74.595891] raw_notifier_call_chain+0x11/0x20 [ 74.600459] call_netdevice_notifiers_info+0x4b/0x60 [ 74.605555] __netdev_upper_dev_link+0x18e/0x1f0 [ 74.610302] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 74.615048] netdev_master_upper_dev_link+0x14/0x20 [ 74.620058] batadv_hardif_enable_interface+0x1af/0x990 [ 74.625455] batadv_softif_slave_add+0x82/0xe0 [ 74.630031] do_set_master+0x163/0x1f0 [ 74.633911] do_setlink+0x9dd/0x2c50 [ 74.637611] ? __lock_acquire+0x6a4/0x4500 [ 74.641859] ? trace_hardirqs_off+0x10/0x10 [ 74.646172] ? rtnl_register+0x20/0x20 [ 74.650055] ? trace_hardirqs_on+0x10/0x10 [ 74.654291] ? __lock_acquire+0x6a4/0x4500 [ 74.658519] ? trace_hardirqs_off+0x10/0x10 [ 74.662829] ? trace_hardirqs_off+0x10/0x10 [ 74.667148] rtnl_newlink+0xe0c/0x1390 [ 74.671028] ? rtnl_link_unregister+0x270/0x270 [ 74.675685] ? finish_task_switch+0x178/0x650 [ 74.680163] ? finish_task_switch+0x14d/0x650 [ 74.684645] ? find_held_lock+0x36/0x1d0 [ 74.688697] ? __mutex_lock+0x8b7/0x14c0 [ 74.692745] ? lock_downgrade+0x7f0/0x7f0 [ 74.696874] ? do_raw_spin_unlock+0x16a/0x250 [ 74.701371] rtnetlink_rcv_msg+0x34f/0x9d0 [ 74.705599] ? rtnl_bridge_getlink+0x760/0x760 [ 74.710170] ? find_held_lock+0x36/0x1d0 [ 74.714233] netlink_rcv_skb+0x133/0x370 [ 74.718279] ? rtnl_bridge_getlink+0x760/0x760 [ 74.722844] ? netlink_ack+0xa00/0xa00 [ 74.726717] ? netlink_deliver_tap+0x8e/0x920 [ 74.731200] rtnetlink_rcv+0x10/0x20 [ 74.734900] netlink_unicast+0x40d/0x5f0 [ 74.738954] ? netlink_attachskb+0x6e0/0x6e0 [ 74.743354] netlink_sendmsg+0x730/0xbd0 [ 74.747405] ? netlink_unicast+0x5f0/0x5f0 [ 74.751622] ? selinux_socket_sendmsg+0x31/0x40 [ 74.756274] ? security_socket_sendmsg+0x6a/0xa0 [ 74.761023] ? netlink_unicast+0x5f0/0x5f0 [ 74.765252] sock_sendmsg+0xb5/0xf0 [ 74.768867] ___sys_sendmsg+0x625/0x920 [ 74.772846] ? trace_hardirqs_off+0x10/0x10 [ 74.777261] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 74.782005] ? find_held_lock+0x36/0x1d0 [ 74.786170] ? lock_downgrade+0x7f0/0x7f0 [ 74.790303] ? __fget+0x1ca/0x2f0 [ 74.793740] ? __fget_light+0x166/0x200 [ 74.797697] ? __fdget+0xe/0x10 [ 74.800961] ? sockfd_lookup_light+0x1c/0x150 [ 74.805451] __sys_sendmsg+0xc1/0x140 [ 74.809228] ? SyS_shutdown+0x180/0x180 [ 74.813185] ? __sb_end_write+0xa4/0xd0 [ 74.817139] ? mutex_unlock+0xd/0x10 [ 74.820836] ? do_syscall_64+0x4c/0x5b0 [ 74.824789] ? __sys_sendmsg+0x140/0x140 [ 74.828828] SyS_sendmsg+0xd/0x20 [ 74.832266] do_syscall_64+0x1c7/0x5b0 [ 74.836131] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 74.840961] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 74.846137] RIP: 0033:0x459ef9 [ 74.849304] RSP: 002b:00007f64eba6ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 74.856991] RAX: ffffffffffffffda RBX: 00007f64eba6ec90 RCX: 0000000000459ef9 [ 74.864239] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 74.871485] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 74.878797] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f64eba6f6d4 [ 74.886055] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 74.894403] batman_adv: batadv0: Adding interface: hsr_slave_1 [ 74.900792] batman_adv: batadv0: The MTU of interface hsr_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. [ 74.925743] batman_adv: batadv0: Interface activated: hsr_slave_1 [ 74.933513] FAULT_INJECTION: forcing a failure. [ 74.933513] name failslab, interval 1, probability 0, space 0, times 0 [ 74.944769] CPU: 0 PID: 7192 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 74.952569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.961962] Call Trace: [ 74.964550] dump_stack+0xf7/0x13b [ 74.968092] should_fail.cold.3+0x105/0x14b [ 74.972419] should_failslab+0xba/0xf0 [ 74.976307] kmem_cache_alloc_trace+0x2ea/0x7a0 [ 74.980959] ? __wake_up+0xe/0x10 [ 74.984391] ? netlink_broadcast_filtered+0x297/0x8f0 [ 74.989560] ? __alloc_skb+0x308/0x500 [ 74.993430] netdevice_event+0x16b/0x6d0 [ 74.997481] ? update_gid_event_work_handler+0xb0/0xb0 [ 75.002738] ? add_netdev_upper_ips+0x20/0x20 [ 75.007214] ? inetaddr_event+0x190/0x190 [ 75.011354] ? _add_netdev_ips+0x30/0x30 [ 75.015400] ? is_eth_port_of_netdev.part.7+0x1e0/0x1e0 [ 75.020749] ? rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 75.025746] notifier_call_chain+0xd6/0x150 [ 75.030053] raw_notifier_call_chain+0x11/0x20 [ 75.034620] call_netdevice_notifiers_info+0x4b/0x60 [ 75.039703] netdev_upper_dev_unlink+0xab/0xe0 [ 75.044287] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30 [ 75.050327] bond_upper_dev_unlink.isra.45+0x33/0xc0 [ 75.055411] __bond_release_one+0x2c2/0x1370 [ 75.059822] ? trace_hardirqs_on+0x10/0x10 [ 75.064046] ? bond_enslave+0x4a80/0x4a80 [ 75.068179] ? find_held_lock+0x36/0x1d0 [ 75.072226] ? trace_hardirqs_off+0x10/0x10 [ 75.076534] ? trace_hardirqs_off+0x10/0x10 [ 75.080840] ? trace_hardirqs_off+0x10/0x10 [ 75.085153] ? lock_downgrade+0x7f0/0x7f0 [ 75.089278] ? trace_hardirqs_off+0x10/0x10 [ 75.093580] bond_release+0xd/0x10 [ 75.097095] do_set_master+0xb6/0x1f0 [ 75.100878] do_setlink+0x9dd/0x2c50 [ 75.104585] ? rtnl_register+0x20/0x20 [ 75.108559] ? __lock_acquire+0x6a4/0x4500 [ 75.112794] ? load_balance+0xb38/0x2190 [ 75.116844] ? lock_downgrade+0x7f0/0x7f0 [ 75.120969] ? lock_pin_lock+0x340/0x340 [ 75.125013] ? __lock_acquire+0x6a4/0x4500 [ 75.129229] ? trace_hardirqs_off+0x10/0x10 [ 75.133528] ? __lock_is_held+0xb5/0x140 [ 75.137575] ? trace_hardirqs_off+0x10/0x10 [ 75.141878] rtnl_newlink+0xe0c/0x1390 [ 75.145750] ? memset+0x31/0x40 [ 75.149007] ? rtnl_newlink+0x6d0/0x1390 [ 75.153060] ? rtnl_link_unregister+0x270/0x270 [ 75.157712] ? finish_task_switch+0x178/0x650 [ 75.162184] ? finish_task_switch+0x14d/0x650 [ 75.166658] ? find_held_lock+0x36/0x1d0 [ 75.170698] ? __mutex_lock+0x8b7/0x14c0 [ 75.174739] ? lock_downgrade+0x7f0/0x7f0 [ 75.178883] ? do_raw_spin_unlock+0x16a/0x250 [ 75.183386] rtnetlink_rcv_msg+0x34f/0x9d0 [ 75.187601] ? rtnl_bridge_getlink+0x760/0x760 [ 75.192162] ? find_held_lock+0x36/0x1d0 [ 75.196214] netlink_rcv_skb+0x133/0x370 [ 75.200255] ? rtnl_bridge_getlink+0x760/0x760 [ 75.204816] ? netlink_ack+0xa00/0xa00 [ 75.208680] ? netlink_deliver_tap+0x8e/0x920 [ 75.213212] rtnetlink_rcv+0x10/0x20 [ 75.216917] netlink_unicast+0x40d/0x5f0 [ 75.220971] ? netlink_attachskb+0x6e0/0x6e0 [ 75.225392] netlink_sendmsg+0x730/0xbd0 [ 75.229442] ? netlink_unicast+0x5f0/0x5f0 [ 75.233664] ? selinux_socket_sendmsg+0x31/0x40 [ 75.238313] ? security_socket_sendmsg+0x6a/0xa0 [ 75.243055] ? netlink_unicast+0x5f0/0x5f0 [ 75.247272] sock_sendmsg+0xb5/0xf0 [ 75.250933] ___sys_sendmsg+0x625/0x920 [ 75.254887] ? trace_hardirqs_off+0x10/0x10 [ 75.259197] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 75.263948] ? find_held_lock+0x36/0x1d0 [ 75.268008] ? lock_downgrade+0x7f0/0x7f0 [ 75.272154] ? __fget+0x1ca/0x2f0 [ 75.275589] ? __fget_light+0x166/0x200 [ 75.279553] ? __fdget+0xe/0x10 [ 75.282825] ? sockfd_lookup_light+0x1c/0x150 [ 75.287321] __sys_sendmsg+0xc1/0x140 [ 75.291153] ? SyS_shutdown+0x180/0x180 [ 75.295108] ? __sb_end_write+0xa4/0xd0 [ 75.299062] ? mutex_unlock+0xd/0x10 [ 75.302780] ? do_syscall_64+0x4c/0x5b0 [ 75.306745] ? __sys_sendmsg+0x140/0x140 [ 75.310831] SyS_sendmsg+0xd/0x20 [ 75.314292] do_syscall_64+0x1c7/0x5b0 [ 75.318163] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 75.322995] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 75.328173] RIP: 0033:0x459ef9 [ 75.331348] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 75.339045] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 75.346305] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 75.353597] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 75.360847] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 75.368095] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 75.376288] bond0: Releasing backup interface bond_slave_1 [ 75.422618] batman_adv: batadv0: Adding interface: bond_slave_1 [ 75.428811] batman_adv: batadv0: The MTU of interface bond_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. [ 75.454065] batman_adv: batadv0: Not using interface bond_slave_1 (retrying later): interface not active [ 75.464174] FAULT_INJECTION: forcing a failure. [ 75.464174] name failslab, interval 1, probability 0, space 0, times 0 [ 75.475528] CPU: 0 PID: 7195 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 75.483320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.492672] Call Trace: [ 75.495261] dump_stack+0xf7/0x13b [ 75.498799] should_fail.cold.3+0x105/0x14b [ 75.503106] should_failslab+0xba/0xf0 [ 75.506972] kmem_cache_alloc_node+0x287/0x790 [ 75.511557] __alloc_skb+0x92/0x500 [ 75.515175] ? skb_trim+0x160/0x160 [ 75.518781] ? if_nlmsg_size+0x2d9/0x6f0 [ 75.522821] rtmsg_ifinfo_build_skb+0x68/0x120 [ 75.527381] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 75.532247] rtmsg_ifinfo+0x4a/0x70 [ 75.535855] bond_upper_dev_unlink.isra.45+0x95/0xc0 [ 75.540935] __bond_release_one+0x2c2/0x1370 [ 75.545322] ? trace_hardirqs_on+0x10/0x10 [ 75.549533] ? trace_hardirqs_on_caller+0x40c/0x580 [ 75.554538] ? bond_enslave+0x4a80/0x4a80 [ 75.558664] ? find_held_lock+0x36/0x1d0 [ 75.562703] ? trace_hardirqs_off+0x10/0x10 [ 75.567002] ? trace_hardirqs_off+0x10/0x10 [ 75.571302] ? trace_hardirqs_off+0x10/0x10 [ 75.575601] ? lock_downgrade+0x7f0/0x7f0 [ 75.579733] ? trace_hardirqs_off+0x10/0x10 [ 75.584041] bond_release+0xd/0x10 [ 75.587571] do_set_master+0xb6/0x1f0 [ 75.591352] do_setlink+0x9dd/0x2c50 [ 75.595048] ? rtnl_register+0x20/0x20 [ 75.598914] ? __lock_acquire+0x6a4/0x4500 [ 75.603128] ? load_balance+0xb38/0x2190 [ 75.607186] ? lock_downgrade+0x7f0/0x7f0 [ 75.611324] ? lock_pin_lock+0x340/0x340 [ 75.615374] ? __lock_acquire+0x6a4/0x4500 [ 75.619602] ? trace_hardirqs_off+0x10/0x10 [ 75.623906] ? __lock_is_held+0xb5/0x140 [ 75.627957] ? trace_hardirqs_off+0x10/0x10 [ 75.632266] rtnl_newlink+0xe0c/0x1390 [ 75.636177] ? memset+0x31/0x40 [ 75.639440] ? rtnl_newlink+0x6d0/0x1390 [ 75.643486] ? rtnl_link_unregister+0x270/0x270 [ 75.648152] ? finish_task_switch+0x178/0x650 [ 75.652629] ? finish_task_switch+0x14d/0x650 [ 75.657107] ? find_held_lock+0x36/0x1d0 [ 75.661152] ? __mutex_lock+0x8b7/0x14c0 [ 75.665192] ? lock_downgrade+0x7f0/0x7f0 [ 75.669317] ? do_raw_spin_unlock+0x16a/0x250 [ 75.673806] rtnetlink_rcv_msg+0x34f/0x9d0 [ 75.678033] ? rtnl_bridge_getlink+0x760/0x760 [ 75.682604] ? find_held_lock+0x36/0x1d0 [ 75.686665] netlink_rcv_skb+0x133/0x370 [ 75.690721] ? rtnl_bridge_getlink+0x760/0x760 [ 75.695290] ? netlink_ack+0xa00/0xa00 [ 75.699165] ? netlink_deliver_tap+0x8e/0x920 [ 75.703645] rtnetlink_rcv+0x10/0x20 [ 75.707337] netlink_unicast+0x40d/0x5f0 [ 75.711385] ? netlink_attachskb+0x6e0/0x6e0 [ 75.715791] netlink_sendmsg+0x730/0xbd0 [ 75.719841] ? netlink_unicast+0x5f0/0x5f0 [ 75.724085] ? selinux_socket_sendmsg+0x31/0x40 [ 75.728732] ? security_socket_sendmsg+0x6a/0xa0 [ 75.733468] ? netlink_unicast+0x5f0/0x5f0 [ 75.737683] sock_sendmsg+0xb5/0xf0 [ 75.741294] ___sys_sendmsg+0x625/0x920 [ 75.745255] ? trace_hardirqs_off+0x10/0x10 [ 75.749590] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 75.754327] ? find_held_lock+0x36/0x1d0 [ 75.758378] ? lock_downgrade+0x7f0/0x7f0 [ 75.762516] ? __fget+0x1ca/0x2f0 [ 75.766009] ? __fget_light+0x166/0x200 [ 75.769974] ? __fdget+0xe/0x10 [ 75.773241] ? sockfd_lookup_light+0x1c/0x150 [ 75.777730] __sys_sendmsg+0xc1/0x140 [ 75.781517] ? SyS_shutdown+0x180/0x180 [ 75.785477] ? __sb_end_write+0xa4/0xd0 [ 75.789448] ? mutex_unlock+0xd/0x10 [ 75.793150] ? do_syscall_64+0x4c/0x5b0 [ 75.797105] ? __sys_sendmsg+0x140/0x140 [ 75.801158] SyS_sendmsg+0xd/0x20 [ 75.804609] do_syscall_64+0x1c7/0x5b0 [ 75.808507] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 75.813376] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 75.818553] RIP: 0033:0x459ef9 [ 75.821723] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 75.829413] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 75.836711] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 75.844067] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 75.851323] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 75.858574] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 75.866478] bond0: Releasing backup interface bond_slave_1 [ 75.922531] batman_adv: batadv0: Adding interface: bond_slave_1 [ 75.928690] batman_adv: batadv0: The MTU of interface bond_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. [ 75.955414] batman_adv: batadv0: Not using interface bond_slave_1 (retrying later): interface not active [ 75.965416] FAULT_INJECTION: forcing a failure. [ 75.965416] name failslab, interval 1, probability 0, space 0, times 0 [ 75.979435] CPU: 0 PID: 7199 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 75.987254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.996612] Call Trace: [ 75.999197] dump_stack+0xf7/0x13b [ 76.002734] should_fail.cold.3+0x105/0x14b [ 76.007053] should_failslab+0xba/0xf0 [ 76.010921] kmem_cache_alloc_node+0x287/0x790 [ 76.015548] __alloc_skb+0x92/0x500 [ 76.019155] ? skb_trim+0x160/0x160 [ 76.022777] ? if_nlmsg_size+0x2d9/0x6f0 [ 76.026830] rtmsg_ifinfo_build_skb+0x68/0x120 [ 76.031400] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 76.036226] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 76.041145] rtnetlink_event+0xc2/0x110 [ 76.045110] notifier_call_chain+0xd6/0x150 [ 76.049423] raw_notifier_call_chain+0x11/0x20 [ 76.053986] call_netdevice_notifiers_info+0x4b/0x60 [ 76.059073] __netdev_upper_dev_link+0x18e/0x1f0 [ 76.063812] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 76.068550] netdev_master_upper_dev_link+0x14/0x20 [ 76.073548] batadv_hardif_enable_interface+0x1af/0x990 [ 76.078892] batadv_softif_slave_add+0x82/0xe0 [ 76.083459] do_set_master+0x163/0x1f0 [ 76.087325] do_setlink+0x9dd/0x2c50 [ 76.091021] ? rtnl_register+0x20/0x20 [ 76.094893] ? __lock_acquire+0x6a4/0x4500 [ 76.099111] ? trace_hardirqs_off+0x10/0x10 [ 76.103417] rtnl_newlink+0xe0c/0x1390 [ 76.107296] ? rtnl_link_unregister+0x270/0x270 [ 76.111952] ? finish_task_switch+0x178/0x650 [ 76.116435] ? finish_task_switch+0x14d/0x650 [ 76.120920] ? find_held_lock+0x36/0x1d0 [ 76.124977] ? __mutex_lock+0x8b7/0x14c0 [ 76.129021] ? lock_downgrade+0x7f0/0x7f0 [ 76.133148] ? do_raw_spin_unlock+0x16a/0x250 [ 76.137640] rtnetlink_rcv_msg+0x34f/0x9d0 [ 76.141855] ? rtnl_bridge_getlink+0x760/0x760 [ 76.146427] ? find_held_lock+0x36/0x1d0 [ 76.150586] netlink_rcv_skb+0x133/0x370 [ 76.154675] ? rtnl_bridge_getlink+0x760/0x760 [ 76.159233] ? netlink_ack+0xa00/0xa00 [ 76.163097] ? netlink_deliver_tap+0x8e/0x920 [ 76.167573] rtnetlink_rcv+0x10/0x20 [ 76.171265] netlink_unicast+0x40d/0x5f0 [ 76.175304] ? netlink_attachskb+0x6e0/0x6e0 [ 76.179691] netlink_sendmsg+0x730/0xbd0 [ 76.183728] ? netlink_unicast+0x5f0/0x5f0 [ 76.187959] ? selinux_socket_sendmsg+0x31/0x40 [ 76.192605] ? security_socket_sendmsg+0x6a/0xa0 [ 76.197337] ? netlink_unicast+0x5f0/0x5f0 [ 76.201547] sock_sendmsg+0xb5/0xf0 [ 76.205153] ___sys_sendmsg+0x625/0x920 [ 76.209105] ? trace_hardirqs_off+0x10/0x10 [ 76.213406] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 76.218140] ? find_held_lock+0x36/0x1d0 [ 76.222180] ? lock_downgrade+0x7f0/0x7f0 [ 76.226313] ? __fget+0x1ca/0x2f0 [ 76.229742] ? __fget_light+0x166/0x200 [ 76.233695] ? __fdget+0xe/0x10 [ 76.236951] ? sockfd_lookup_light+0x1c/0x150 [ 76.241423] __sys_sendmsg+0xc1/0x140 [ 76.245219] ? SyS_shutdown+0x180/0x180 [ 76.249183] ? __sb_end_write+0xa4/0xd0 [ 76.253144] ? mutex_unlock+0xd/0x10 [ 76.256843] ? do_syscall_64+0x4c/0x5b0 [ 76.260797] ? __sys_sendmsg+0x140/0x140 [ 76.264862] SyS_sendmsg+0xd/0x20 [ 76.268304] do_syscall_64+0x1c7/0x5b0 [ 76.272167] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.276991] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 76.282158] RIP: 0033:0x459ef9 [ 76.285327] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.293018] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 76.300435] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 76.307687] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 76.314939] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 76.322240] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 76.332211] batman_adv: batadv0: Adding interface: veth0_to_team [ 76.338486] batman_adv: batadv0: The MTU of interface veth0_to_team 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. [ 76.363854] batman_adv: batadv0: Interface activated: veth0_to_team [ 76.371179] FAULT_INJECTION: forcing a failure. [ 76.371179] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 76.382979] CPU: 0 PID: 7202 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 76.390771] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.400123] Call Trace: [ 76.402712] dump_stack+0xf7/0x13b [ 76.406257] should_fail.cold.3+0x105/0x14b [ 76.410580] __alloc_pages_nodemask+0x1d5/0x770 [ 76.415240] ? __alloc_pages_slowpath+0x2650/0x2650 [ 76.420248] cache_grow_begin+0x80/0x3f0 [ 76.424294] kmem_cache_alloc_node_trace+0x6aa/0x780 [ 76.429386] __kmalloc_node_track_caller+0x3c/0x70 [ 76.434301] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 76.439037] pskb_expand_head+0x106/0xc20 [ 76.443210] ? kasan_kmalloc+0xc7/0xe0 [ 76.447080] netlink_trim+0x18f/0x200 [ 76.450872] netlink_broadcast_filtered+0x57/0x8f0 [ 76.455792] ? __alloc_skb+0x308/0x500 [ 76.459667] nlmsg_notify+0x6b/0x120 [ 76.463369] rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 76.468189] rtnetlink_event+0xc2/0x110 [ 76.472154] notifier_call_chain+0xd6/0x150 [ 76.476491] raw_notifier_call_chain+0x11/0x20 [ 76.481073] call_netdevice_notifiers_info+0x4b/0x60 [ 76.486164] netdev_upper_dev_unlink+0xab/0xe0 [ 76.490737] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30 [ 76.496787] bond_upper_dev_unlink.isra.45+0x33/0xc0 [ 76.501876] __bond_release_one+0x2c2/0x1370 [ 76.506266] ? bond_enslave+0x4a80/0x4a80 [ 76.510400] ? cpumask_next+0x21/0x30 [ 76.514308] ? cpumask_next_and+0x4d/0x90 [ 76.518471] ? find_busiest_group+0x374/0x2b00 [ 76.523038] ? __lock_acquire+0x6a4/0x4500 [ 76.527357] bond_release+0xd/0x10 [ 76.530903] do_set_master+0xb6/0x1f0 [ 76.534692] do_setlink+0x9dd/0x2c50 [ 76.538520] ? __lock_acquire+0x6a4/0x4500 [ 76.542742] ? rtnl_register+0x20/0x20 [ 76.546627] ? __lock_acquire+0x6a4/0x4500 [ 76.550875] ? __lock_acquire+0x6a4/0x4500 [ 76.555120] ? trace_hardirqs_off+0x10/0x10 [ 76.559472] rtnl_newlink+0xe0c/0x1390 [ 76.563360] ? memset+0x31/0x40 [ 76.566627] ? rtnl_newlink+0x6d0/0x1390 [ 76.570688] ? rtnl_link_unregister+0x270/0x270 [ 76.575346] ? finish_task_switch+0x178/0x650 [ 76.579820] ? finish_task_switch+0x14d/0x650 [ 76.584307] ? find_held_lock+0x36/0x1d0 [ 76.588371] ? __mutex_lock+0x8b7/0x14c0 [ 76.592425] ? lock_downgrade+0x7f0/0x7f0 [ 76.596677] ? do_raw_spin_unlock+0x16a/0x250 [ 76.601164] rtnetlink_rcv_msg+0x34f/0x9d0 [ 76.605379] ? rtnl_bridge_getlink+0x760/0x760 [ 76.609939] ? find_held_lock+0x36/0x1d0 [ 76.613990] netlink_rcv_skb+0x133/0x370 [ 76.618034] ? rtnl_bridge_getlink+0x760/0x760 [ 76.622604] ? netlink_ack+0xa00/0xa00 [ 76.626480] ? netlink_deliver_tap+0x8e/0x920 [ 76.630961] rtnetlink_rcv+0x10/0x20 [ 76.634664] netlink_unicast+0x40d/0x5f0 [ 76.638711] ? netlink_attachskb+0x6e0/0x6e0 [ 76.643099] netlink_sendmsg+0x730/0xbd0 [ 76.647158] ? netlink_unicast+0x5f0/0x5f0 [ 76.651380] ? selinux_socket_sendmsg+0x31/0x40 [ 76.656035] ? security_socket_sendmsg+0x6a/0xa0 [ 76.660769] ? netlink_unicast+0x5f0/0x5f0 [ 76.664991] sock_sendmsg+0xb5/0xf0 [ 76.668599] ___sys_sendmsg+0x625/0x920 [ 76.672568] ? trace_hardirqs_off+0x10/0x10 [ 76.676883] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 76.681625] ? find_held_lock+0x36/0x1d0 [ 76.685676] ? lock_downgrade+0x7f0/0x7f0 [ 76.689829] ? __fget+0x1ca/0x2f0 [ 76.693285] ? __fget_light+0x166/0x200 [ 76.697248] ? __fdget+0xe/0x10 [ 76.700510] ? sockfd_lookup_light+0x1c/0x150 [ 76.704987] __sys_sendmsg+0xc1/0x140 [ 76.708774] ? SyS_shutdown+0x180/0x180 [ 76.712742] ? __sb_end_write+0xa4/0xd0 [ 76.716706] ? mutex_unlock+0xd/0x10 [ 76.720430] ? do_syscall_64+0x4c/0x5b0 [ 76.724384] ? __sys_sendmsg+0x140/0x140 [ 76.728446] SyS_sendmsg+0xd/0x20 [ 76.731886] do_syscall_64+0x1c7/0x5b0 [ 76.735763] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.740597] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 76.745777] RIP: 0033:0x459ef9 [ 76.748961] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.756665] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 76.763925] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 76.771186] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 76.778461] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 76.785724] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 76.794304] bond0: Releasing backup interface bond_slave_1 [ 76.842556] batman_adv: batadv0: Adding interface: bond_slave_1 [ 76.848649] batman_adv: batadv0: The MTU of interface bond_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. [ 76.876214] batman_adv: batadv0: Not using interface bond_slave_1 (retrying later): interface not active [ 76.886107] FAULT_INJECTION: forcing a failure. [ 76.886107] name failslab, interval 1, probability 0, space 0, times 0 [ 76.897865] CPU: 1 PID: 7204 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 76.905784] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.915133] Call Trace: [ 76.917724] dump_stack+0xf7/0x13b [ 76.921269] should_fail.cold.3+0x105/0x14b [ 76.925576] should_failslab+0xba/0xf0 [ 76.929444] kmem_cache_alloc_node+0x287/0x790 [ 76.934011] __alloc_skb+0x92/0x500 [ 76.937624] ? skb_trim+0x160/0x160 [ 76.941229] ? if_nlmsg_size+0x2d9/0x6f0 [ 76.945271] rtmsg_ifinfo_build_skb+0x68/0x120 [ 76.949898] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 76.954728] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 76.959693] rtnetlink_event+0xc2/0x110 [ 76.963658] notifier_call_chain+0xd6/0x150 [ 76.967962] raw_notifier_call_chain+0x11/0x20 [ 76.972532] call_netdevice_notifiers_info+0x4b/0x60 [ 76.977613] __netdev_upper_dev_link+0x18e/0x1f0 [ 76.982407] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 76.987144] netdev_master_upper_dev_link+0x14/0x20 [ 76.992138] batadv_hardif_enable_interface+0x1af/0x990 [ 76.997487] batadv_softif_slave_add+0x82/0xe0 [ 77.002047] do_set_master+0x163/0x1f0 [ 77.005914] do_setlink+0x9dd/0x2c50 [ 77.009606] ? find_held_lock+0x36/0x1d0 [ 77.013646] ? rtnl_register+0x20/0x20 [ 77.017509] ? load_balance+0xb38/0x2190 [ 77.021547] ? lock_downgrade+0x7f0/0x7f0 [ 77.025672] ? lock_pin_lock+0x340/0x340 [ 77.029722] ? __lock_acquire+0x6a4/0x4500 [ 77.033984] ? trace_hardirqs_off+0x10/0x10 [ 77.038281] ? __lock_is_held+0xb5/0x140 [ 77.042323] ? trace_hardirqs_off+0x10/0x10 [ 77.046631] rtnl_newlink+0xe0c/0x1390 [ 77.050501] ? rtnl_link_unregister+0x270/0x270 [ 77.055147] ? finish_task_switch+0x178/0x650 [ 77.059617] ? finish_task_switch+0x14d/0x650 [ 77.064136] ? find_held_lock+0x36/0x1d0 [ 77.068178] ? __mutex_lock+0x8b7/0x14c0 [ 77.072221] ? lock_downgrade+0x7f0/0x7f0 [ 77.076364] ? do_raw_spin_unlock+0x16a/0x250 [ 77.080865] rtnetlink_rcv_msg+0x34f/0x9d0 [ 77.085080] ? rtnl_bridge_getlink+0x760/0x760 [ 77.089646] ? find_held_lock+0x36/0x1d0 [ 77.093700] netlink_rcv_skb+0x133/0x370 [ 77.097750] ? rtnl_bridge_getlink+0x760/0x760 [ 77.102316] ? netlink_ack+0xa00/0xa00 [ 77.106190] ? netlink_deliver_tap+0x8e/0x920 [ 77.110673] rtnetlink_rcv+0x10/0x20 [ 77.114373] netlink_unicast+0x40d/0x5f0 [ 77.118413] ? netlink_attachskb+0x6e0/0x6e0 [ 77.122799] netlink_sendmsg+0x730/0xbd0 [ 77.126842] ? netlink_unicast+0x5f0/0x5f0 [ 77.131053] ? selinux_socket_sendmsg+0x31/0x40 [ 77.135699] ? security_socket_sendmsg+0x6a/0xa0 [ 77.140433] ? netlink_unicast+0x5f0/0x5f0 [ 77.144646] sock_sendmsg+0xb5/0xf0 [ 77.148253] ___sys_sendmsg+0x625/0x920 [ 77.152210] ? trace_hardirqs_off+0x10/0x10 [ 77.156519] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 77.161264] ? find_held_lock+0x36/0x1d0 [ 77.165309] ? lock_downgrade+0x7f0/0x7f0 [ 77.169440] ? __fget+0x1ca/0x2f0 [ 77.172962] ? __fget_light+0x166/0x200 [ 77.176932] ? __fdget+0xe/0x10 [ 77.180233] ? sockfd_lookup_light+0x1c/0x150 [ 77.184712] __sys_sendmsg+0xc1/0x140 [ 77.188489] ? SyS_shutdown+0x180/0x180 [ 77.192443] ? __sb_end_write+0xa4/0xd0 [ 77.196433] ? mutex_unlock+0xd/0x10 [ 77.200153] ? do_syscall_64+0x4c/0x5b0 [ 77.204105] ? __sys_sendmsg+0x140/0x140 [ 77.208143] SyS_sendmsg+0xd/0x20 [ 77.211574] do_syscall_64+0x1c7/0x5b0 [ 77.215441] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 77.220262] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 77.225429] RIP: 0033:0x459ef9 [ 77.228605] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.236385] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 77.243631] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 77.250877] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 77.258135] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 77.265394] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 77.275757] batman_adv: batadv0: Adding interface: veth0_to_bond [ 77.282084] batman_adv: batadv0: The MTU of interface veth0_to_bond 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. [ 77.307361] batman_adv: batadv0: Interface activated: veth0_to_bond [ 77.316001] FAULT_INJECTION: forcing a failure. [ 77.316001] name failslab, interval 1, probability 0, space 0, times 0 [ 77.340070] CPU: 1 PID: 7211 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 77.347901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.357251] Call Trace: [ 77.359838] dump_stack+0xf7/0x13b [ 77.363375] should_fail.cold.3+0x105/0x14b [ 77.367686] should_failslab+0xba/0xf0 [ 77.371562] kmem_cache_alloc_node_trace+0x279/0x780 [ 77.376663] __kmalloc_node_track_caller+0x3c/0x70 [ 77.381577] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 77.386319] __alloc_skb+0xc1/0x500 [ 77.389941] ? skb_trim+0x160/0x160 [ 77.393559] ? if_nlmsg_size+0x2d9/0x6f0 [ 77.397619] rtmsg_ifinfo_build_skb+0x68/0x120 [ 77.402191] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 77.407020] rtmsg_ifinfo+0x4a/0x70 [ 77.410631] dev_close_many+0x287/0x610 [ 77.414593] ? list_netdevice+0x4b0/0x4b0 [ 77.418722] ? mark_held_locks+0xc7/0x130 [ 77.422851] ? dev_mc_unsync+0x165/0x1a5 [ 77.426894] dev_close.part.89+0xe5/0x190 [ 77.431018] ? dev_close_many+0x610/0x610 [ 77.435151] ? dev_mc_unsync+0x165/0x1a5 [ 77.439201] ? __local_bh_enable_ip+0x9c/0x180 [ 77.443777] ? _raw_spin_unlock_bh+0x30/0x40 [ 77.448192] dev_close+0x40/0x50 [ 77.451561] team_port_del+0x2c0/0x770 [ 77.455484] team_del_slave+0x34/0x70 [ 77.459275] do_set_master+0xb6/0x1f0 [ 77.463066] do_setlink+0x9dd/0x2c50 [ 77.466762] ? find_held_lock+0x36/0x1d0 [ 77.470802] ? rtnl_register+0x20/0x20 [ 77.474671] ? load_balance+0xb38/0x2190 [ 77.478714] ? lock_downgrade+0x7f0/0x7f0 [ 77.482840] ? lock_pin_lock+0x340/0x340 [ 77.486885] ? __lock_acquire+0x6a4/0x4500 [ 77.491099] ? trace_hardirqs_off+0x10/0x10 [ 77.495402] ? __lock_is_held+0xb5/0x140 [ 77.499446] ? trace_hardirqs_off+0x10/0x10 [ 77.503760] rtnl_newlink+0xe0c/0x1390 [ 77.507629] ? rtnl_newlink+0x6d0/0x1390 [ 77.511671] ? rtnl_link_unregister+0x270/0x270 [ 77.516324] ? finish_task_switch+0x178/0x650 [ 77.520795] ? finish_task_switch+0x14d/0x650 [ 77.525278] ? find_held_lock+0x36/0x1d0 [ 77.529333] ? __mutex_lock+0x8b7/0x14c0 [ 77.533398] ? lock_downgrade+0x7f0/0x7f0 [ 77.537538] ? do_raw_spin_unlock+0x16a/0x250 [ 77.542028] rtnetlink_rcv_msg+0x34f/0x9d0 [ 77.546249] ? rtnl_bridge_getlink+0x760/0x760 [ 77.550814] ? find_held_lock+0x36/0x1d0 [ 77.554859] netlink_rcv_skb+0x133/0x370 [ 77.558899] ? rtnl_bridge_getlink+0x760/0x760 [ 77.563465] ? netlink_ack+0xa00/0xa00 [ 77.567341] ? netlink_deliver_tap+0x8e/0x920 [ 77.571818] rtnetlink_rcv+0x10/0x20 [ 77.575511] netlink_unicast+0x40d/0x5f0 [ 77.579550] ? netlink_attachskb+0x6e0/0x6e0 [ 77.583940] netlink_sendmsg+0x730/0xbd0 [ 77.587996] ? netlink_unicast+0x5f0/0x5f0 [ 77.592219] ? selinux_socket_sendmsg+0x31/0x40 [ 77.596874] ? security_socket_sendmsg+0x6a/0xa0 [ 77.601623] ? netlink_unicast+0x5f0/0x5f0 [ 77.605850] sock_sendmsg+0xb5/0xf0 [ 77.609459] ___sys_sendmsg+0x625/0x920 [ 77.613419] ? trace_hardirqs_off+0x10/0x10 [ 77.617735] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 77.622485] ? find_held_lock+0x36/0x1d0 [ 77.626549] ? lock_downgrade+0x7f0/0x7f0 [ 77.630722] ? __fget+0x1ca/0x2f0 [ 77.634163] ? __fget_light+0x166/0x200 [ 77.638115] ? __fdget+0xe/0x10 [ 77.641465] ? sockfd_lookup_light+0x1c/0x150 [ 77.645945] __sys_sendmsg+0xc1/0x140 [ 77.649728] ? SyS_shutdown+0x180/0x180 [ 77.653681] ? __sb_end_write+0xa4/0xd0 [ 77.657635] ? mutex_unlock+0xd/0x10 [ 77.661332] ? do_syscall_64+0x4c/0x5b0 [ 77.665283] ? __sys_sendmsg+0x140/0x140 [ 77.669322] SyS_sendmsg+0xd/0x20 [ 77.672758] do_syscall_64+0x1c7/0x5b0 [ 77.676631] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 77.681455] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 77.686626] RIP: 0033:0x459ef9 [ 77.689801] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.697485] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 77.704742] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 77.712000] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 77.719250] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 77.726498] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 77.736477] team0: Port device team_slave_0 removed [ 77.742461] batman_adv: batadv0: Adding interface: team_slave_0 [ 77.748539] batman_adv: batadv0: The MTU of interface team_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. [ 77.774020] batman_adv: batadv0: Not using interface team_slave_0 (retrying later): interface not active [ 77.784190] FAULT_INJECTION: forcing a failure. [ 77.784190] name fail_page_alloc, interval 1, probability 0, space 0, times 0 2020/02/11 23:04:46 executed programs: 105 [ 77.795988] CPU: 1 PID: 7214 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 77.803788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.813139] Call Trace: [ 77.815728] dump_stack+0xf7/0x13b [ 77.819254] should_fail.cold.3+0x105/0x14b [ 77.823554] ? rtnl_newlink+0xe0c/0x1390 [ 77.827598] __alloc_pages_nodemask+0x1d5/0x770 [ 77.832260] ? __alloc_pages_slowpath+0x2650/0x2650 [ 77.837268] ? lock_downgrade+0x7f0/0x7f0 [ 77.841401] cache_grow_begin+0x80/0x3f0 [ 77.845444] kmem_cache_alloc_node_trace+0x6aa/0x780 [ 77.850528] __kmalloc_node_track_caller+0x3c/0x70 [ 77.855448] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 77.860189] __alloc_skb+0xc1/0x500 [ 77.863795] ? skb_trim+0x160/0x160 [ 77.867401] ? if_nlmsg_size+0x2d9/0x6f0 [ 77.871446] rtmsg_ifinfo_build_skb+0x68/0x120 [ 77.876011] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 77.880843] rtmsg_ifinfo+0x4a/0x70 [ 77.884456] dev_close_many+0x287/0x610 [ 77.888449] ? list_netdevice+0x4b0/0x4b0 [ 77.892577] ? mark_held_locks+0xc7/0x130 [ 77.896829] ? dev_mc_unsync+0x165/0x1a5 [ 77.900873] dev_close.part.89+0xe5/0x190 [ 77.905004] ? dev_close_many+0x610/0x610 [ 77.909129] ? dev_mc_unsync+0x165/0x1a5 [ 77.913216] ? __local_bh_enable_ip+0x9c/0x180 [ 77.917826] ? _raw_spin_unlock_bh+0x30/0x40 [ 77.922259] dev_close+0x40/0x50 [ 77.925607] team_port_del+0x2c0/0x770 [ 77.929472] team_del_slave+0x34/0x70 [ 77.933253] do_set_master+0xb6/0x1f0 [ 77.937044] do_setlink+0x9dd/0x2c50 [ 77.940746] ? find_held_lock+0x36/0x1d0 [ 77.944793] ? rtnl_register+0x20/0x20 [ 77.948672] ? load_balance+0xb38/0x2190 [ 77.952729] ? lock_downgrade+0x7f0/0x7f0 [ 77.956859] ? lock_pin_lock+0x340/0x340 [ 77.961017] ? __lock_acquire+0x6a4/0x4500 [ 77.965238] ? trace_hardirqs_off+0x10/0x10 [ 77.969554] ? __lock_is_held+0xb5/0x140 [ 77.973620] ? trace_hardirqs_off+0x10/0x10 [ 77.977931] rtnl_newlink+0xe0c/0x1390 [ 77.981803] ? rtnl_newlink+0x6d0/0x1390 [ 77.985858] ? rtnl_link_unregister+0x270/0x270 [ 77.990516] ? finish_task_switch+0x178/0x650 [ 77.994989] ? finish_task_switch+0x14d/0x650 [ 77.999466] ? find_held_lock+0x36/0x1d0 [ 78.003515] ? __mutex_lock+0x8b7/0x14c0 [ 78.007565] ? lock_downgrade+0x7f0/0x7f0 [ 78.011806] ? do_raw_spin_unlock+0x16a/0x250 [ 78.016314] rtnetlink_rcv_msg+0x34f/0x9d0 [ 78.020540] ? rtnl_bridge_getlink+0x760/0x760 [ 78.025140] ? find_held_lock+0x36/0x1d0 [ 78.029192] netlink_rcv_skb+0x133/0x370 [ 78.033242] ? rtnl_bridge_getlink+0x760/0x760 [ 78.037805] ? netlink_ack+0xa00/0xa00 [ 78.041690] ? netlink_deliver_tap+0x8e/0x920 [ 78.046165] rtnetlink_rcv+0x10/0x20 [ 78.049857] netlink_unicast+0x40d/0x5f0 [ 78.053895] ? netlink_attachskb+0x6e0/0x6e0 [ 78.058284] netlink_sendmsg+0x730/0xbd0 [ 78.062334] ? netlink_unicast+0x5f0/0x5f0 [ 78.066558] ? selinux_socket_sendmsg+0x31/0x40 [ 78.071208] ? security_socket_sendmsg+0x6a/0xa0 [ 78.075941] ? netlink_unicast+0x5f0/0x5f0 [ 78.080156] sock_sendmsg+0xb5/0xf0 [ 78.083760] ___sys_sendmsg+0x625/0x920 [ 78.087718] ? trace_hardirqs_off+0x10/0x10 [ 78.092027] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 78.096772] ? find_held_lock+0x36/0x1d0 [ 78.100823] ? lock_downgrade+0x7f0/0x7f0 [ 78.104972] ? __fget+0x1ca/0x2f0 [ 78.108418] ? __fget_light+0x166/0x200 [ 78.112370] ? __fdget+0xe/0x10 [ 78.115675] ? sockfd_lookup_light+0x1c/0x150 [ 78.120153] __sys_sendmsg+0xc1/0x140 [ 78.123931] ? SyS_shutdown+0x180/0x180 [ 78.127886] ? __sb_end_write+0xa4/0xd0 [ 78.131843] ? mutex_unlock+0xd/0x10 [ 78.135541] ? do_syscall_64+0x4c/0x5b0 [ 78.139495] ? __sys_sendmsg+0x140/0x140 [ 78.143534] SyS_sendmsg+0xd/0x20 [ 78.146969] do_syscall_64+0x1c7/0x5b0 [ 78.150837] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 78.155670] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 78.160842] RIP: 0033:0x459ef9 [ 78.164034] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.171749] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 78.179005] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 78.186265] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 78.193539] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 78.200799] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 78.211588] team0: Port device team_slave_0 removed [ 78.217200] batman_adv: batadv0: Adding interface: team_slave_0 [ 78.223323] batman_adv: batadv0: The MTU of interface team_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. [ 78.248373] batman_adv: batadv0: Not using interface team_slave_0 (retrying later): interface not active [ 78.258348] FAULT_INJECTION: forcing a failure. [ 78.258348] name failslab, interval 1, probability 0, space 0, times 0 [ 78.275105] CPU: 1 PID: 7217 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 78.282921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.292271] Call Trace: [ 78.294850] dump_stack+0xf7/0x13b [ 78.298383] should_fail.cold.3+0x105/0x14b [ 78.302710] should_failslab+0xba/0xf0 [ 78.306585] kmem_cache_alloc_node+0x287/0x790 [ 78.311148] __alloc_skb+0x92/0x500 [ 78.314761] ? skb_trim+0x160/0x160 [ 78.318416] ? if_nlmsg_size+0x2d9/0x6f0 [ 78.322464] rtmsg_ifinfo_build_skb+0x68/0x120 [ 78.327083] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 78.331915] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 78.336869] rtnetlink_event+0xc2/0x110 [ 78.340850] notifier_call_chain+0xd6/0x150 [ 78.345157] raw_notifier_call_chain+0x11/0x20 [ 78.349727] call_netdevice_notifiers_info+0x4b/0x60 [ 78.354807] __netdev_upper_dev_link+0x18e/0x1f0 [ 78.359551] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 78.364289] netdev_master_upper_dev_link+0x14/0x20 [ 78.369291] batadv_hardif_enable_interface+0x1af/0x990 [ 78.374646] batadv_softif_slave_add+0x82/0xe0 [ 78.379211] do_set_master+0x163/0x1f0 [ 78.383083] do_setlink+0x9dd/0x2c50 [ 78.386780] ? __lock_acquire+0x6a4/0x4500 [ 78.390996] ? trace_hardirqs_off+0x10/0x10 [ 78.395323] ? rtnl_register+0x20/0x20 [ 78.399193] ? trace_hardirqs_on+0x10/0x10 [ 78.403416] ? __lock_acquire+0x6a4/0x4500 [ 78.407652] ? trace_hardirqs_off+0x10/0x10 [ 78.411961] ? trace_hardirqs_off+0x10/0x10 [ 78.416278] rtnl_newlink+0xe0c/0x1390 [ 78.420175] ? rtnl_link_unregister+0x270/0x270 [ 78.424833] ? finish_task_switch+0x178/0x650 [ 78.429308] ? finish_task_switch+0x14d/0x650 [ 78.433791] ? find_held_lock+0x36/0x1d0 [ 78.437841] ? __mutex_lock+0x8b7/0x14c0 [ 78.441884] ? lock_downgrade+0x7f0/0x7f0 [ 78.446012] ? do_raw_spin_unlock+0x16a/0x250 [ 78.450502] rtnetlink_rcv_msg+0x34f/0x9d0 [ 78.454717] ? rtnl_bridge_getlink+0x760/0x760 [ 78.459276] ? find_held_lock+0x36/0x1d0 [ 78.463317] netlink_rcv_skb+0x133/0x370 [ 78.467357] ? rtnl_bridge_getlink+0x760/0x760 [ 78.471917] ? netlink_ack+0xa00/0xa00 [ 78.475787] ? netlink_deliver_tap+0x8e/0x920 [ 78.480314] rtnetlink_rcv+0x10/0x20 [ 78.484008] netlink_unicast+0x40d/0x5f0 [ 78.488052] ? netlink_attachskb+0x6e0/0x6e0 [ 78.492542] netlink_sendmsg+0x730/0xbd0 [ 78.496592] ? netlink_unicast+0x5f0/0x5f0 [ 78.500814] ? selinux_socket_sendmsg+0x31/0x40 [ 78.505484] ? security_socket_sendmsg+0x6a/0xa0 [ 78.510275] ? netlink_unicast+0x5f0/0x5f0 [ 78.514498] sock_sendmsg+0xb5/0xf0 [ 78.518105] ___sys_sendmsg+0x625/0x920 [ 78.522069] ? trace_hardirqs_off+0x10/0x10 [ 78.526381] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 78.531181] ? find_held_lock+0x36/0x1d0 [ 78.535227] ? lock_downgrade+0x7f0/0x7f0 [ 78.539358] ? __fget+0x1ca/0x2f0 [ 78.542791] ? __fget_light+0x166/0x200 [ 78.546746] ? __fdget+0xe/0x10 [ 78.550005] ? sockfd_lookup_light+0x1c/0x150 [ 78.554485] __sys_sendmsg+0xc1/0x140 [ 78.558265] ? SyS_shutdown+0x180/0x180 [ 78.562214] ? __sb_end_write+0xa4/0xd0 [ 78.566177] ? mutex_unlock+0xd/0x10 [ 78.569889] ? do_syscall_64+0x4c/0x5b0 [ 78.573849] ? __sys_sendmsg+0x140/0x140 [ 78.577896] SyS_sendmsg+0xd/0x20 [ 78.581332] do_syscall_64+0x1c7/0x5b0 [ 78.585200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 78.590050] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 78.595237] RIP: 0033:0x459ef9 [ 78.598421] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.606111] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 78.613375] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 78.620642] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 78.627900] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 78.635156] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 78.644359] batman_adv: batadv0: Adding interface: veth1_to_team [ 78.646029] NOHZ: local_softirq_pending 08 [ 78.650565] batman_adv: batadv0: The MTU of interface veth1_to_team 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. [ 78.679928] batman_adv: batadv0: Interface activated: veth1_to_team [ 78.687470] FAULT_INJECTION: forcing a failure. [ 78.687470] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 78.699277] CPU: 0 PID: 7219 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 78.707048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.716385] Call Trace: [ 78.718952] dump_stack+0xf7/0x13b [ 78.722475] should_fail.cold.3+0x105/0x14b [ 78.726781] ? rtnl_newlink+0xe0c/0x1390 [ 78.730823] __alloc_pages_nodemask+0x1d5/0x770 [ 78.735467] ? __alloc_pages_slowpath+0x2650/0x2650 [ 78.740461] ? lock_downgrade+0x7f0/0x7f0 [ 78.744589] cache_grow_begin+0x80/0x3f0 [ 78.748625] kmem_cache_alloc_node_trace+0x6aa/0x780 [ 78.753711] __kmalloc_node_track_caller+0x3c/0x70 [ 78.758618] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 78.763351] __alloc_skb+0xc1/0x500 [ 78.766953] ? skb_trim+0x160/0x160 [ 78.770566] ? if_nlmsg_size+0x2d9/0x6f0 [ 78.774612] rtmsg_ifinfo_build_skb+0x68/0x120 [ 78.779172] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 78.784003] rtmsg_ifinfo+0x4a/0x70 [ 78.787624] dev_close_many+0x287/0x610 [ 78.791593] ? list_netdevice+0x4b0/0x4b0 [ 78.795741] ? mark_held_locks+0xc7/0x130 [ 78.799867] ? dev_mc_unsync+0x165/0x1a5 [ 78.803911] dev_close.part.89+0xe5/0x190 [ 78.808041] ? dev_close_many+0x610/0x610 [ 78.812167] ? dev_mc_unsync+0x165/0x1a5 [ 78.816211] ? __local_bh_enable_ip+0x9c/0x180 [ 78.820772] ? _raw_spin_unlock_bh+0x30/0x40 [ 78.825155] dev_close+0x40/0x50 [ 78.828498] team_port_del+0x2c0/0x770 [ 78.832363] team_del_slave+0x34/0x70 [ 78.836142] do_set_master+0xb6/0x1f0 [ 78.839919] do_setlink+0x9dd/0x2c50 [ 78.843610] ? find_held_lock+0x36/0x1d0 [ 78.847650] ? rtnl_register+0x20/0x20 [ 78.851513] ? load_balance+0xb38/0x2190 [ 78.855549] ? lock_downgrade+0x7f0/0x7f0 [ 78.859683] ? lock_pin_lock+0x340/0x340 [ 78.863742] ? __lock_acquire+0x6a4/0x4500 [ 78.867964] ? trace_hardirqs_off+0x10/0x10 [ 78.872281] ? __lock_is_held+0xb5/0x140 [ 78.876336] ? trace_hardirqs_off+0x10/0x10 [ 78.880669] rtnl_newlink+0xe0c/0x1390 [ 78.884542] ? rtnl_newlink+0x6d0/0x1390 [ 78.888586] ? rtnl_link_unregister+0x270/0x270 [ 78.893236] ? finish_task_switch+0x178/0x650 [ 78.897705] ? finish_task_switch+0x14d/0x650 [ 78.902183] ? find_held_lock+0x36/0x1d0 [ 78.906234] ? __mutex_lock+0x8b7/0x14c0 [ 78.910272] ? lock_downgrade+0x7f0/0x7f0 [ 78.914397] ? do_raw_spin_unlock+0x16a/0x250 [ 78.918882] rtnetlink_rcv_msg+0x34f/0x9d0 [ 78.923095] ? rtnl_bridge_getlink+0x760/0x760 [ 78.927661] ? find_held_lock+0x36/0x1d0 [ 78.931730] netlink_rcv_skb+0x133/0x370 [ 78.935768] ? rtnl_bridge_getlink+0x760/0x760 [ 78.940326] ? netlink_ack+0xa00/0xa00 [ 78.944191] ? netlink_deliver_tap+0x8e/0x920 [ 78.948665] rtnetlink_rcv+0x10/0x20 [ 78.952354] netlink_unicast+0x40d/0x5f0 [ 78.956391] ? netlink_attachskb+0x6e0/0x6e0 [ 78.960776] netlink_sendmsg+0x730/0xbd0 [ 78.964824] ? netlink_unicast+0x5f0/0x5f0 [ 78.969035] ? selinux_socket_sendmsg+0x31/0x40 [ 78.973684] ? security_socket_sendmsg+0x6a/0xa0 [ 78.978414] ? netlink_unicast+0x5f0/0x5f0 [ 78.982623] sock_sendmsg+0xb5/0xf0 [ 78.986243] ___sys_sendmsg+0x625/0x920 [ 78.990196] ? trace_hardirqs_off+0x10/0x10 [ 78.994497] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 78.999228] ? find_held_lock+0x36/0x1d0 [ 79.003268] ? lock_downgrade+0x7f0/0x7f0 [ 79.007395] ? __fget+0x1ca/0x2f0 [ 79.010830] ? __fget_light+0x166/0x200 [ 79.014801] ? __fdget+0xe/0x10 [ 79.018056] ? sockfd_lookup_light+0x1c/0x150 [ 79.022542] __sys_sendmsg+0xc1/0x140 [ 79.026366] ? SyS_shutdown+0x180/0x180 [ 79.030333] ? __sb_end_write+0xa4/0xd0 [ 79.034313] ? mutex_unlock+0xd/0x10 [ 79.038013] ? do_syscall_64+0x4c/0x5b0 [ 79.041972] ? __sys_sendmsg+0x140/0x140 [ 79.046013] SyS_sendmsg+0xd/0x20 [ 79.049444] do_syscall_64+0x1c7/0x5b0 [ 79.053310] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 79.058131] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 79.063301] RIP: 0033:0x459ef9 [ 79.066466] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.074152] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 79.081398] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 79.088648] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 79.095894] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 79.103156] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 79.126192] team0: Port device team_slave_0 removed [ 79.133965] batman_adv: batadv0: Adding interface: team_slave_0 [ 79.140387] batman_adv: batadv0: The MTU of interface team_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. [ 79.165699] batman_adv: batadv0: Not using interface team_slave_0 (retrying later): interface not active [ 79.176580] FAULT_INJECTION: forcing a failure. [ 79.176580] name failslab, interval 1, probability 0, space 0, times 0 [ 79.204217] CPU: 1 PID: 7226 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 79.212044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.221406] Call Trace: [ 79.224000] dump_stack+0xf7/0x13b [ 79.227541] should_fail.cold.3+0x105/0x14b [ 79.231914] should_failslab+0xba/0xf0 [ 79.235788] kmem_cache_alloc+0x2cf/0x790 [ 79.239915] ? memcpy+0x45/0x50 [ 79.243180] ? kstrdup+0x42/0x60 [ 79.246543] __kernfs_new_node+0x63/0x470 [ 79.250682] ? lock_downgrade+0x7f0/0x7f0 [ 79.254813] kernfs_new_node+0x5e/0xe0 [ 79.258692] kernfs_create_link+0x25/0x130 [ 79.262920] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 79.268099] sysfs_create_link+0x43/0xb0 [ 79.272153] netdev_adjacent_sysfs_add+0x94/0xb0 [ 79.276903] ? napi_disable+0x80/0x80 [ 79.280693] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 79.285872] __netdev_upper_dev_link+0x174/0x1f0 [ 79.290620] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 79.295359] netdev_master_upper_dev_link+0x14/0x20 [ 79.300359] batadv_hardif_enable_interface+0x1af/0x990 [ 79.305725] batadv_softif_slave_add+0x82/0xe0 [ 79.310295] do_set_master+0x163/0x1f0 [ 79.314172] do_setlink+0x9dd/0x2c50 [ 79.317863] ? find_held_lock+0x36/0x1d0 [ 79.321904] ? rtnl_register+0x20/0x20 [ 79.325777] ? load_balance+0xb38/0x2190 [ 79.329843] ? lock_downgrade+0x7f0/0x7f0 [ 79.333967] ? lock_pin_lock+0x340/0x340 [ 79.338016] ? __lock_acquire+0x6a4/0x4500 [ 79.342239] ? trace_hardirqs_off+0x10/0x10 [ 79.346548] ? __lock_is_held+0xb5/0x140 [ 79.350592] ? trace_hardirqs_off+0x10/0x10 [ 79.354896] rtnl_newlink+0xe0c/0x1390 [ 79.358769] ? rtnl_link_unregister+0x270/0x270 [ 79.363420] ? finish_task_switch+0x178/0x650 [ 79.367894] ? finish_task_switch+0x14d/0x650 [ 79.372369] ? find_held_lock+0x36/0x1d0 [ 79.376428] ? __mutex_lock+0x8b7/0x14c0 [ 79.380469] ? lock_downgrade+0x7f0/0x7f0 [ 79.384674] ? do_raw_spin_unlock+0x16a/0x250 [ 79.389183] rtnetlink_rcv_msg+0x34f/0x9d0 [ 79.393405] ? rtnl_bridge_getlink+0x760/0x760 [ 79.398009] ? find_held_lock+0x36/0x1d0 [ 79.402054] netlink_rcv_skb+0x133/0x370 [ 79.406105] ? rtnl_bridge_getlink+0x760/0x760 [ 79.410674] ? netlink_ack+0xa00/0xa00 [ 79.414545] ? netlink_deliver_tap+0x8e/0x920 [ 79.419037] rtnetlink_rcv+0x10/0x20 [ 79.422734] netlink_unicast+0x40d/0x5f0 [ 79.426817] ? netlink_attachskb+0x6e0/0x6e0 [ 79.431209] netlink_sendmsg+0x730/0xbd0 [ 79.435249] ? netlink_unicast+0x5f0/0x5f0 [ 79.439461] ? selinux_socket_sendmsg+0x31/0x40 [ 79.444109] ? security_socket_sendmsg+0x6a/0xa0 [ 79.448842] ? netlink_unicast+0x5f0/0x5f0 [ 79.453054] sock_sendmsg+0xb5/0xf0 [ 79.456665] ___sys_sendmsg+0x625/0x920 [ 79.460623] ? trace_hardirqs_off+0x10/0x10 [ 79.464922] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 79.469685] ? find_held_lock+0x36/0x1d0 [ 79.473729] ? lock_downgrade+0x7f0/0x7f0 [ 79.477869] ? __fget+0x1ca/0x2f0 [ 79.481339] ? __fget_light+0x166/0x200 [ 79.485318] ? __fdget+0xe/0x10 [ 79.488590] ? sockfd_lookup_light+0x1c/0x150 [ 79.493076] __sys_sendmsg+0xc1/0x140 [ 79.496868] ? SyS_shutdown+0x180/0x180 [ 79.500830] ? __sb_end_write+0xa4/0xd0 [ 79.504803] ? mutex_unlock+0xd/0x10 [ 79.508502] ? do_syscall_64+0x4c/0x5b0 [ 79.512471] ? __sys_sendmsg+0x140/0x140 [ 79.516512] SyS_sendmsg+0xd/0x20 [ 79.519947] do_syscall_64+0x1c7/0x5b0 [ 79.523827] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 79.528656] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 79.533823] RIP: 0033:0x459ef9 [ 79.536995] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.544694] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 79.551958] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 79.559209] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 79.566479] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 79.573742] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 79.584562] FAULT_INJECTION: forcing a failure. [ 79.584562] name failslab, interval 1, probability 0, space 0, times 0 [ 79.596760] CPU: 0 PID: 7229 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 79.604568] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.613914] Call Trace: [ 79.616505] dump_stack+0xf7/0x13b [ 79.620053] should_fail.cold.3+0x105/0x14b [ 79.624376] should_failslab+0xba/0xf0 [ 79.628259] kmem_cache_alloc_node_trace+0x5a/0x780 [ 79.633269] __kmalloc_node_track_caller+0x3c/0x70 [ 79.638191] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 79.642933] pskb_expand_head+0x106/0xc20 [ 79.647083] ? kasan_kmalloc+0xc7/0xe0 [ 79.650964] netlink_trim+0x18f/0x200 [ 79.654754] netlink_broadcast_filtered+0x57/0x8f0 [ 79.659672] ? __alloc_skb+0x308/0x500 [ 79.663554] nlmsg_notify+0x6b/0x120 [ 79.667258] rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 79.672083] rtmsg_ifinfo+0x4a/0x70 [ 79.675699] dev_close_many+0x287/0x610 [ 79.679657] ? list_netdevice+0x4b0/0x4b0 [ 79.683791] ? mark_held_locks+0xc7/0x130 [ 79.688100] ? dev_mc_unsync+0x165/0x1a5 [ 79.692140] dev_close.part.89+0xe5/0x190 [ 79.696270] ? dev_close_many+0x610/0x610 [ 79.700399] ? dev_mc_unsync+0x165/0x1a5 [ 79.704450] ? __local_bh_enable_ip+0x9c/0x180 [ 79.709017] ? _raw_spin_unlock_bh+0x30/0x40 [ 79.713404] dev_close+0x40/0x50 [ 79.716748] team_port_del+0x2c0/0x770 [ 79.720627] team_del_slave+0x34/0x70 [ 79.724413] do_set_master+0xb6/0x1f0 [ 79.728198] do_setlink+0x9dd/0x2c50 [ 79.731953] ? find_held_lock+0x36/0x1d0 [ 79.736003] ? rtnl_register+0x20/0x20 [ 79.739872] ? load_balance+0xb38/0x2190 [ 79.743912] ? lock_downgrade+0x7f0/0x7f0 [ 79.748041] ? lock_pin_lock+0x340/0x340 [ 79.752089] ? __lock_acquire+0x6a4/0x4500 [ 79.756300] ? trace_hardirqs_off+0x10/0x10 [ 79.760611] ? __lock_is_held+0xb5/0x140 [ 79.764660] ? trace_hardirqs_off+0x10/0x10 [ 79.768970] ? trace_hardirqs_off+0x10/0x10 [ 79.773285] rtnl_newlink+0xe0c/0x1390 [ 79.777167] ? rtnl_newlink+0x6d0/0x1390 [ 79.781225] ? rtnl_link_unregister+0x270/0x270 [ 79.785880] ? finish_task_switch+0x178/0x650 [ 79.790364] ? finish_task_switch+0x14d/0x650 [ 79.794837] ? find_held_lock+0x36/0x1d0 [ 79.798880] ? __mutex_lock+0x8b7/0x14c0 [ 79.802920] ? lock_downgrade+0x7f0/0x7f0 [ 79.807048] ? do_raw_spin_unlock+0x16a/0x250 [ 79.811537] rtnetlink_rcv_msg+0x34f/0x9d0 [ 79.815751] ? rtnl_bridge_getlink+0x760/0x760 [ 79.820319] ? find_held_lock+0x36/0x1d0 [ 79.824369] netlink_rcv_skb+0x133/0x370 [ 79.828410] ? rtnl_bridge_getlink+0x760/0x760 [ 79.832980] ? netlink_ack+0xa00/0xa00 [ 79.836847] ? netlink_deliver_tap+0x8e/0x920 [ 79.841333] rtnetlink_rcv+0x10/0x20 [ 79.845031] netlink_unicast+0x40d/0x5f0 [ 79.849087] ? netlink_attachskb+0x6e0/0x6e0 [ 79.853502] netlink_sendmsg+0x730/0xbd0 [ 79.857593] ? netlink_unicast+0x5f0/0x5f0 [ 79.861820] ? selinux_socket_sendmsg+0x31/0x40 [ 79.866481] ? security_socket_sendmsg+0x6a/0xa0 [ 79.871433] ? netlink_unicast+0x5f0/0x5f0 [ 79.875662] sock_sendmsg+0xb5/0xf0 [ 79.879274] ___sys_sendmsg+0x625/0x920 [ 79.883234] ? trace_hardirqs_off+0x10/0x10 [ 79.887535] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 79.892272] ? find_held_lock+0x36/0x1d0 [ 79.896319] ? lock_downgrade+0x7f0/0x7f0 [ 79.900457] ? __fget+0x1ca/0x2f0 [ 79.903895] ? __fget_light+0x166/0x200 [ 79.907847] ? __fdget+0xe/0x10 [ 79.911108] ? sockfd_lookup_light+0x1c/0x150 [ 79.915689] __sys_sendmsg+0xc1/0x140 [ 79.919484] ? SyS_shutdown+0x180/0x180 [ 79.923442] ? __sb_end_write+0xa4/0xd0 [ 79.927399] ? mutex_unlock+0xd/0x10 [ 79.931094] ? do_syscall_64+0x4c/0x5b0 [ 79.935060] ? __sys_sendmsg+0x140/0x140 [ 79.939128] SyS_sendmsg+0xd/0x20 [ 79.942577] do_syscall_64+0x1c7/0x5b0 [ 79.946453] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 79.951284] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 79.956455] RIP: 0033:0x459ef9 [ 79.959644] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.967333] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 79.974590] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 79.981843] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 79.989099] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 79.996348] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 80.007363] team0: Port device team_slave_1 removed [ 80.013344] batman_adv: batadv0: Adding interface: team_slave_1 [ 80.019410] batman_adv: batadv0: The MTU of interface team_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. [ 80.044564] batman_adv: batadv0: Not using interface team_slave_1 (retrying later): interface not active [ 80.054757] FAULT_INJECTION: forcing a failure. [ 80.054757] name failslab, interval 1, probability 0, space 0, times 0 [ 80.066300] CPU: 1 PID: 7232 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 80.074193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.083551] Call Trace: [ 80.086142] dump_stack+0xf7/0x13b [ 80.089681] should_fail.cold.3+0x105/0x14b [ 80.094000] should_failslab+0xba/0xf0 [ 80.097884] kmem_cache_alloc_node_trace+0x5a/0x780 [ 80.103015] __kmalloc_node_track_caller+0x3c/0x70 [ 80.107998] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 80.112737] pskb_expand_head+0x106/0xc20 [ 80.116863] ? kasan_kmalloc+0xc7/0xe0 [ 80.120746] netlink_trim+0x18f/0x200 [ 80.124532] netlink_broadcast_filtered+0x57/0x8f0 [ 80.129439] ? __alloc_skb+0x308/0x500 [ 80.133309] nlmsg_notify+0x6b/0x120 [ 80.137003] rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 80.141824] rtmsg_ifinfo+0x4a/0x70 [ 80.145439] dev_close_many+0x287/0x610 [ 80.149401] ? list_netdevice+0x4b0/0x4b0 [ 80.153538] ? mark_held_locks+0xc7/0x130 [ 80.157675] ? dev_mc_unsync+0x165/0x1a5 [ 80.161714] dev_close.part.89+0xe5/0x190 [ 80.165852] ? dev_close_many+0x610/0x610 [ 80.169984] ? dev_mc_unsync+0x165/0x1a5 [ 80.176803] ? __local_bh_enable_ip+0x9c/0x180 [ 80.181387] ? _raw_spin_unlock_bh+0x30/0x40 [ 80.185808] dev_close+0x40/0x50 [ 80.189169] team_port_del+0x2c0/0x770 [ 80.193101] team_del_slave+0x34/0x70 [ 80.196889] do_set_master+0xb6/0x1f0 [ 80.200673] do_setlink+0x9dd/0x2c50 [ 80.204383] ? find_held_lock+0x36/0x1d0 [ 80.208447] ? rtnl_register+0x20/0x20 [ 80.212333] ? load_balance+0xb38/0x2190 [ 80.216387] ? lock_downgrade+0x7f0/0x7f0 [ 80.220586] ? lock_pin_lock+0x340/0x340 [ 80.224647] ? __lock_acquire+0x6a4/0x4500 [ 80.228892] ? trace_hardirqs_off+0x10/0x10 [ 80.233198] ? __lock_is_held+0xb5/0x140 [ 80.237281] ? trace_hardirqs_off+0x10/0x10 [ 80.241588] rtnl_newlink+0xe0c/0x1390 [ 80.245526] ? rtnl_newlink+0x6d0/0x1390 [ 80.249578] ? rtnl_link_unregister+0x270/0x270 [ 80.254233] ? finish_task_switch+0x178/0x650 [ 80.258716] ? finish_task_switch+0x14d/0x650 [ 80.263198] ? find_held_lock+0x36/0x1d0 [ 80.267242] ? __mutex_lock+0x8b7/0x14c0 [ 80.271294] ? lock_downgrade+0x7f0/0x7f0 [ 80.275429] ? do_raw_spin_unlock+0x16a/0x250 [ 80.279946] rtnetlink_rcv_msg+0x34f/0x9d0 [ 80.284872] ? rtnl_bridge_getlink+0x760/0x760 [ 80.289437] ? find_held_lock+0x36/0x1d0 [ 80.293484] netlink_rcv_skb+0x133/0x370 [ 80.297528] ? rtnl_bridge_getlink+0x760/0x760 [ 80.302633] ? netlink_ack+0xa00/0xa00 [ 80.306849] ? netlink_deliver_tap+0x8e/0x920 [ 80.311342] rtnetlink_rcv+0x10/0x20 [ 80.315053] netlink_unicast+0x40d/0x5f0 [ 80.319097] ? netlink_attachskb+0x6e0/0x6e0 [ 80.323501] netlink_sendmsg+0x730/0xbd0 [ 80.327550] ? netlink_unicast+0x5f0/0x5f0 [ 80.331772] ? selinux_socket_sendmsg+0x31/0x40 [ 80.336457] ? security_socket_sendmsg+0x6a/0xa0 [ 80.341213] ? netlink_unicast+0x5f0/0x5f0 [ 80.345446] sock_sendmsg+0xb5/0xf0 [ 80.349080] ___sys_sendmsg+0x625/0x920 [ 80.353136] ? trace_hardirqs_off+0x10/0x10 [ 80.357635] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 80.363388] ? find_held_lock+0x36/0x1d0 [ 80.367436] ? lock_downgrade+0x7f0/0x7f0 [ 80.371567] ? __fget+0x1ca/0x2f0 [ 80.375455] ? __fget_light+0x166/0x200 [ 80.379746] ? __fdget+0xe/0x10 [ 80.383025] ? sockfd_lookup_light+0x1c/0x150 [ 80.387511] __sys_sendmsg+0xc1/0x140 [ 80.391296] ? SyS_shutdown+0x180/0x180 [ 80.395250] ? __sb_end_write+0xa4/0xd0 [ 80.399211] ? mutex_unlock+0xd/0x10 [ 80.402917] ? do_syscall_64+0x4c/0x5b0 [ 80.406880] ? __sys_sendmsg+0x140/0x140 [ 80.410930] SyS_sendmsg+0xd/0x20 [ 80.414362] do_syscall_64+0x1c7/0x5b0 [ 80.418225] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 80.423059] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 80.428239] RIP: 0033:0x459ef9 [ 80.431423] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.439235] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 80.446487] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 80.453761] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 80.461015] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 80.468267] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 80.480424] team0: Port device team_slave_1 removed [ 80.486360] batman_adv: batadv0: Adding interface: team_slave_1 [ 80.492521] batman_adv: batadv0: The MTU of interface team_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. [ 80.517643] batman_adv: batadv0: Not using interface team_slave_1 (retrying later): interface not active [ 80.527660] FAULT_INJECTION: forcing a failure. [ 80.527660] name failslab, interval 1, probability 0, space 0, times 0 [ 80.545227] CPU: 1 PID: 7235 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 80.553055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.562406] Call Trace: [ 80.564978] dump_stack+0xf7/0x13b [ 80.568502] should_fail.cold.3+0x105/0x14b [ 80.572810] should_failslab+0xba/0xf0 [ 80.576680] kmem_cache_alloc_node+0x287/0x790 [ 80.581248] __alloc_skb+0x92/0x500 [ 80.584853] ? skb_trim+0x160/0x160 [ 80.588459] ? if_nlmsg_size+0x2d9/0x6f0 [ 80.592508] rtmsg_ifinfo_build_skb+0x68/0x120 [ 80.597078] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 80.601898] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 80.606806] rtnetlink_event+0xc2/0x110 [ 80.610769] notifier_call_chain+0xd6/0x150 [ 80.615198] raw_notifier_call_chain+0x11/0x20 [ 80.619773] call_netdevice_notifiers_info+0x4b/0x60 [ 80.624953] __netdev_upper_dev_link+0x18e/0x1f0 [ 80.629699] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 80.634453] netdev_master_upper_dev_link+0x14/0x20 [ 80.639521] batadv_hardif_enable_interface+0x1af/0x990 [ 80.644868] batadv_softif_slave_add+0x82/0xe0 [ 80.649430] do_set_master+0x163/0x1f0 [ 80.653304] do_setlink+0x9dd/0x2c50 [ 80.656997] ? find_held_lock+0x36/0x1d0 [ 80.661040] ? rtnl_register+0x20/0x20 [ 80.664906] ? load_balance+0xb38/0x2190 [ 80.668945] ? lock_downgrade+0x7f0/0x7f0 [ 80.673072] ? lock_pin_lock+0x340/0x340 [ 80.677117] ? __lock_acquire+0x6a4/0x4500 [ 80.681334] ? trace_hardirqs_off+0x10/0x10 [ 80.685632] ? __lock_is_held+0xb5/0x140 [ 80.689768] ? trace_hardirqs_off+0x10/0x10 [ 80.694096] rtnl_newlink+0xe0c/0x1390 [ 80.697976] ? rtnl_link_unregister+0x270/0x270 [ 80.702630] ? finish_task_switch+0x178/0x650 [ 80.707117] ? finish_task_switch+0x14d/0x650 [ 80.711614] ? find_held_lock+0x36/0x1d0 [ 80.715665] ? __mutex_lock+0x8b7/0x14c0 [ 80.719710] ? lock_downgrade+0x7f0/0x7f0 [ 80.723842] ? do_raw_spin_unlock+0x16a/0x250 [ 80.728356] rtnetlink_rcv_msg+0x34f/0x9d0 [ 80.732585] ? rtnl_bridge_getlink+0x760/0x760 [ 80.737162] ? find_held_lock+0x36/0x1d0 [ 80.741254] netlink_rcv_skb+0x133/0x370 [ 80.745297] ? rtnl_bridge_getlink+0x760/0x760 [ 80.749857] ? netlink_ack+0xa00/0xa00 [ 80.753729] ? netlink_deliver_tap+0x8e/0x920 [ 80.758221] rtnetlink_rcv+0x10/0x20 [ 80.761915] netlink_unicast+0x40d/0x5f0 [ 80.765976] ? netlink_attachskb+0x6e0/0x6e0 [ 80.770365] netlink_sendmsg+0x730/0xbd0 [ 80.774426] ? netlink_unicast+0x5f0/0x5f0 [ 80.778639] ? selinux_socket_sendmsg+0x31/0x40 [ 80.783285] ? security_socket_sendmsg+0x6a/0xa0 [ 80.788041] ? netlink_unicast+0x5f0/0x5f0 [ 80.792258] sock_sendmsg+0xb5/0xf0 [ 80.795894] ___sys_sendmsg+0x625/0x920 [ 80.799846] ? trace_hardirqs_off+0x10/0x10 [ 80.804155] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 80.808908] ? find_held_lock+0x36/0x1d0 [ 80.812968] ? lock_downgrade+0x7f0/0x7f0 [ 80.817100] ? __fget+0x1ca/0x2f0 [ 80.820532] ? __fget_light+0x166/0x200 [ 80.824487] ? __fdget+0xe/0x10 [ 80.827760] ? sockfd_lookup_light+0x1c/0x150 [ 80.832234] __sys_sendmsg+0xc1/0x140 [ 80.836012] ? SyS_shutdown+0x180/0x180 [ 80.839984] ? __sb_end_write+0xa4/0xd0 [ 80.843947] ? mutex_unlock+0xd/0x10 [ 80.847655] ? do_syscall_64+0x4c/0x5b0 [ 80.851615] ? __sys_sendmsg+0x140/0x140 [ 80.855682] SyS_sendmsg+0xd/0x20 [ 80.859123] do_syscall_64+0x1c7/0x5b0 [ 80.862987] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 80.867817] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 80.872995] RIP: 0033:0x459ef9 [ 80.876165] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.883854] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 80.891108] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 80.898369] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 80.905626] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 80.912897] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 80.921392] batman_adv: batadv0: Adding interface: veth0_to_hsr [ 80.927459] batman_adv: batadv0: The MTU of interface veth0_to_hsr 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. [ 80.952557] batman_adv: batadv0: Interface activated: veth0_to_hsr [ 80.960925] FAULT_INJECTION: forcing a failure. [ 80.960925] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 80.972732] CPU: 1 PID: 7241 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 80.980632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.989988] Call Trace: [ 80.992583] dump_stack+0xf7/0x13b [ 80.996132] should_fail.cold.3+0x105/0x14b [ 81.000527] __alloc_pages_nodemask+0x1d5/0x770 [ 81.005207] ? __alloc_pages_slowpath+0x2650/0x2650 [ 81.010239] cache_grow_begin+0x80/0x3f0 [ 81.014312] kmem_cache_alloc_node_trace+0x6aa/0x780 [ 81.019425] __kmalloc_node_track_caller+0x3c/0x70 [ 81.024364] __kmalloc_reserve.isra.36+0x2c/0xc0 [ 81.029114] pskb_expand_head+0x106/0xc20 [ 81.033251] ? kasan_kmalloc+0xc7/0xe0 [ 81.037129] netlink_trim+0x18f/0x200 [ 81.040912] netlink_broadcast_filtered+0x57/0x8f0 [ 81.045827] ? __alloc_skb+0x308/0x500 [ 81.049695] nlmsg_notify+0x6b/0x120 [ 81.053389] rtmsg_ifinfo_event.part.27+0x7a/0xb0 [ 81.058211] rtmsg_ifinfo+0x4a/0x70 [ 81.061814] dev_close_many+0x287/0x610 [ 81.065770] ? list_netdevice+0x4b0/0x4b0 [ 81.069896] ? mark_held_locks+0xc7/0x130 [ 81.074028] ? dev_mc_unsync+0x165/0x1a5 [ 81.078077] dev_close.part.89+0xe5/0x190 [ 81.082206] ? dev_close_many+0x610/0x610 [ 81.086340] ? dev_mc_unsync+0x165/0x1a5 [ 81.090379] ? __local_bh_enable_ip+0x9c/0x180 [ 81.094942] ? _raw_spin_unlock_bh+0x30/0x40 [ 81.099335] dev_close+0x40/0x50 [ 81.102686] team_port_del+0x2c0/0x770 [ 81.106573] team_del_slave+0x34/0x70 [ 81.110355] do_set_master+0xb6/0x1f0 [ 81.114139] do_setlink+0x9dd/0x2c50 [ 81.117875] ? rtnl_register+0x20/0x20 [ 81.121753] ? trace_hardirqs_on+0x10/0x10 [ 81.125964] ? trace_hardirqs_off+0x10/0x10 [ 81.130268] ? find_held_lock+0x36/0x1d0 [ 81.134325] ? find_held_lock+0x36/0x1d0 [ 81.138369] ? free_one_page+0x9c4/0x1050 [ 81.142553] ? lock_downgrade+0x7f0/0x7f0 [ 81.146688] ? __this_cpu_preempt_check+0x13/0x20 [ 81.151621] ? do_raw_spin_unlock+0x16a/0x250 [ 81.156113] rtnl_newlink+0xe0c/0x1390 [ 81.159996] ? rtnl_newlink+0x6d0/0x1390 [ 81.164070] ? rtnl_link_unregister+0x270/0x270 [ 81.168730] ? finish_task_switch+0x448/0x650 [ 81.173224] ? find_held_lock+0x36/0x1d0 [ 81.177340] ? __mutex_lock+0x8b7/0x14c0 [ 81.181382] ? lock_downgrade+0x7f0/0x7f0 [ 81.185514] ? do_raw_spin_unlock+0x16a/0x250 [ 81.190009] rtnetlink_rcv_msg+0x34f/0x9d0 [ 81.194248] ? rtnl_bridge_getlink+0x760/0x760 [ 81.198817] ? find_held_lock+0x36/0x1d0 [ 81.202873] netlink_rcv_skb+0x133/0x370 [ 81.206925] ? rtnl_bridge_getlink+0x760/0x760 [ 81.211490] ? netlink_ack+0xa00/0xa00 [ 81.215358] ? netlink_deliver_tap+0x8e/0x920 [ 81.219834] rtnetlink_rcv+0x10/0x20 [ 81.223528] netlink_unicast+0x40d/0x5f0 [ 81.227566] ? netlink_attachskb+0x6e0/0x6e0 [ 81.231970] netlink_sendmsg+0x730/0xbd0 [ 81.236020] ? netlink_unicast+0x5f0/0x5f0 [ 81.240246] ? selinux_socket_sendmsg+0x31/0x40 [ 81.244899] ? security_socket_sendmsg+0x6a/0xa0 [ 81.249641] ? netlink_unicast+0x5f0/0x5f0 [ 81.253858] sock_sendmsg+0xb5/0xf0 [ 81.257467] ___sys_sendmsg+0x625/0x920 [ 81.261435] ? trace_hardirqs_off+0x10/0x10 [ 81.265746] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 81.270481] ? find_held_lock+0x36/0x1d0 [ 81.274549] ? lock_downgrade+0x7f0/0x7f0 [ 81.278676] ? __fget+0x1ca/0x2f0 [ 81.282119] ? __fget_light+0x166/0x200 [ 81.286082] ? __fdget+0xe/0x10 [ 81.289344] ? sockfd_lookup_light+0x1c/0x150 [ 81.293817] __sys_sendmsg+0xc1/0x140 [ 81.297600] ? SyS_shutdown+0x180/0x180 [ 81.301556] ? __sb_end_write+0xa4/0xd0 [ 81.305510] ? mutex_unlock+0xd/0x10 [ 81.309208] ? do_syscall_64+0x4c/0x5b0 [ 81.313163] ? __sys_sendmsg+0x140/0x140 [ 81.317201] SyS_sendmsg+0xd/0x20 [ 81.320635] do_syscall_64+0x1c7/0x5b0 [ 81.324505] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 81.329330] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 81.334496] RIP: 0033:0x459ef9 [ 81.337667] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.345366] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 81.352616] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 81.359876] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 81.367136] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 81.374394] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 81.385921] team0: Port device team_slave_1 removed [ 81.391825] batman_adv: batadv0: Adding interface: team_slave_1 [ 81.397918] batman_adv: batadv0: The MTU of interface team_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. [ 81.423103] batman_adv: batadv0: Not using interface team_slave_1 (retrying later): interface not active [ 81.434391] FAULT_INJECTION: forcing a failure. [ 81.434391] name failslab, interval 1, probability 0, space 0, times 0 [ 81.446086] CPU: 1 PID: 7243 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 81.453881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.463227] Call Trace: [ 81.465810] dump_stack+0xf7/0x13b [ 81.469334] should_fail.cold.3+0x105/0x14b [ 81.473638] should_failslab+0xba/0xf0 [ 81.477565] kmem_cache_alloc+0x2cf/0x790 [ 81.481695] ? memcpy+0x45/0x50 [ 81.484952] ? kstrdup+0x42/0x60 [ 81.488302] __kernfs_new_node+0x63/0x470 [ 81.492435] ? lock_downgrade+0x7f0/0x7f0 [ 81.496562] kernfs_new_node+0x5e/0xe0 [ 81.500434] kernfs_create_link+0x25/0x130 [ 81.504649] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 81.509817] sysfs_create_link+0x43/0xb0 [ 81.513858] netdev_adjacent_sysfs_add+0x94/0xb0 [ 81.518590] ? napi_disable+0x80/0x80 [ 81.522373] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 81.527552] __netdev_upper_dev_link+0x174/0x1f0 [ 81.532296] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 81.537031] netdev_master_upper_dev_link+0x14/0x20 [ 81.542029] batadv_hardif_enable_interface+0x1af/0x990 [ 81.547382] batadv_softif_slave_add+0x82/0xe0 [ 81.551953] do_set_master+0x163/0x1f0 [ 81.555819] do_setlink+0x9dd/0x2c50 [ 81.559516] ? __kernel_text_address+0xd/0x40 [ 81.564091] ? unwind_get_return_address+0x61/0xa0 [ 81.569002] ? rtnl_register+0x20/0x20 [ 81.572872] ? depot_save_stack+0x122/0x43a [ 81.577190] ? __mmdrop+0x15d/0x1c0 [ 81.580801] ? save_stack+0xa9/0xd0 [ 81.584421] ? save_stack_trace+0x16/0x20 [ 81.588566] ? save_stack+0x43/0xd0 [ 81.592185] ? kasan_slab_free+0x71/0xc0 [ 81.596239] ? kmem_cache_free+0x80/0x2d0 [ 81.600377] ? __mmdrop+0x15d/0x1c0 [ 81.603992] ? finish_task_switch+0x496/0x650 [ 81.608473] ? __schedule+0x788/0x1d20 [ 81.612350] ? schedule+0x7f/0x1b0 [ 81.615889] ? schedule_preempt_disabled+0x13/0x20 [ 81.620811] ? __mutex_lock+0xabc/0x14c0 [ 81.624873] ? mutex_lock_nested+0x16/0x20 [ 81.629101] ? rtnetlink_rcv_msg+0x2c1/0x9d0 [ 81.633516] ? netlink_rcv_skb+0x133/0x370 [ 81.637745] ? rtnetlink_rcv+0x10/0x20 [ 81.641618] ? netlink_unicast+0x40d/0x5f0 [ 81.645841] ? netlink_sendmsg+0x730/0xbd0 [ 81.650124] ? sock_sendmsg+0xb5/0xf0 [ 81.653914] ? ___sys_sendmsg+0x625/0x920 [ 81.658050] ? __sys_sendmsg+0xc1/0x140 [ 81.662011] ? SyS_sendmsg+0xd/0x20 [ 81.665625] ? do_syscall_64+0x1c7/0x5b0 [ 81.669675] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 81.675035] ? trace_hardirqs_off+0x10/0x10 [ 81.679344] ? debug_check_no_obj_freed+0x2f0/0x930 [ 81.684350] rtnl_newlink+0xe0c/0x1390 [ 81.688280] ? __mmdrop+0x15d/0x1c0 [ 81.691900] ? __mmdrop+0x15d/0x1c0 [ 81.695525] ? rtnl_link_unregister+0x270/0x270 [ 81.700187] ? finish_task_switch+0x496/0x650 [ 81.704673] ? find_held_lock+0x36/0x1d0 [ 81.708725] ? __mutex_lock+0x8b7/0x14c0 [ 81.712773] ? lock_downgrade+0x7f0/0x7f0 [ 81.716925] ? do_raw_spin_unlock+0x16a/0x250 [ 81.721438] rtnetlink_rcv_msg+0x34f/0x9d0 [ 81.725661] ? rtnl_bridge_getlink+0x760/0x760 [ 81.730228] ? find_held_lock+0x36/0x1d0 [ 81.734330] netlink_rcv_skb+0x133/0x370 [ 81.738390] ? rtnl_bridge_getlink+0x760/0x760 [ 81.742970] ? netlink_ack+0xa00/0xa00 [ 81.746849] ? netlink_deliver_tap+0x8e/0x920 [ 81.751336] rtnetlink_rcv+0x10/0x20 [ 81.755032] netlink_unicast+0x40d/0x5f0 [ 81.759087] ? netlink_attachskb+0x6e0/0x6e0 [ 81.763489] netlink_sendmsg+0x730/0xbd0 [ 81.767549] ? netlink_unicast+0x5f0/0x5f0 [ 81.771783] ? selinux_socket_sendmsg+0x31/0x40 [ 81.776446] ? security_socket_sendmsg+0x6a/0xa0 [ 81.781190] ? netlink_unicast+0x5f0/0x5f0 [ 81.785412] sock_sendmsg+0xb5/0xf0 [ 81.789028] ___sys_sendmsg+0x625/0x920 [ 81.793000] ? trace_hardirqs_off+0x10/0x10 [ 81.797329] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 81.802076] ? find_held_lock+0x36/0x1d0 [ 81.806175] ? lock_downgrade+0x7f0/0x7f0 [ 81.810319] ? __fget+0x1ca/0x2f0 [ 81.813767] ? __fget_light+0x166/0x200 [ 81.817796] ? __fdget+0xe/0x10 [ 81.821058] ? sockfd_lookup_light+0x1c/0x150 [ 81.825542] __sys_sendmsg+0xc1/0x140 [ 81.829338] ? SyS_shutdown+0x180/0x180 [ 81.833309] ? __sb_end_write+0xa4/0xd0 [ 81.837283] ? mutex_unlock+0xd/0x10 [ 81.841004] ? do_syscall_64+0x4c/0x5b0 [ 81.844966] ? __sys_sendmsg+0x140/0x140 [ 81.849030] SyS_sendmsg+0xd/0x20 [ 81.852482] do_syscall_64+0x1c7/0x5b0 [ 81.856357] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 81.861234] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 81.866420] RIP: 0033:0x459ef9 [ 81.869593] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.877293] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 81.884607] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 81.891863] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 81.899118] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 81.906375] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 81.915863] FAULT_INJECTION: forcing a failure. [ 81.915863] name failslab, interval 1, probability 0, space 0, times 0 [ 81.937961] CPU: 0 PID: 7247 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 81.945781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.955136] Call Trace: [ 81.957728] dump_stack+0xf7/0x13b [ 81.961270] should_fail.cold.3+0x105/0x14b [ 81.965582] should_failslab+0xba/0xf0 [ 81.969462] kmem_cache_alloc_node+0x287/0x790 [ 81.974040] __alloc_skb+0x92/0x500 [ 81.977657] ? skb_trim+0x160/0x160 [ 81.981280] ? if_nlmsg_size+0x2d9/0x6f0 [ 81.985332] rtmsg_ifinfo_build_skb+0x68/0x120 [ 81.989907] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 81.994752] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 81.999677] rtnetlink_event+0xc2/0x110 [ 82.003641] notifier_call_chain+0xd6/0x150 [ 82.007957] raw_notifier_call_chain+0x11/0x20 [ 82.012534] call_netdevice_notifiers_info+0x4b/0x60 [ 82.017622] __netdev_upper_dev_link+0x18e/0x1f0 [ 82.022369] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 82.027119] netdev_master_upper_dev_link+0x14/0x20 [ 82.032120] batadv_hardif_enable_interface+0x1af/0x990 [ 82.037483] batadv_softif_slave_add+0x82/0xe0 [ 82.042072] do_set_master+0x163/0x1f0 [ 82.045957] do_setlink+0x9dd/0x2c50 [ 82.049674] ? rtnl_register+0x20/0x20 [ 82.053572] ? __lock_acquire+0x6a4/0x4500 [ 82.057813] ? trace_hardirqs_off+0x10/0x10 [ 82.062152] rtnl_newlink+0xe0c/0x1390 [ 82.066041] ? rtnl_link_unregister+0x270/0x270 [ 82.070815] ? finish_task_switch+0x178/0x650 [ 82.075296] ? finish_task_switch+0x14d/0x650 [ 82.079774] ? find_held_lock+0x36/0x1d0 [ 82.083827] ? __mutex_lock+0x8b7/0x14c0 [ 82.087871] ? lock_downgrade+0x7f0/0x7f0 [ 82.092003] ? do_raw_spin_unlock+0x16a/0x250 [ 82.096494] rtnetlink_rcv_msg+0x34f/0x9d0 [ 82.100724] ? rtnl_bridge_getlink+0x760/0x760 [ 82.105293] ? find_held_lock+0x36/0x1d0 [ 82.109351] netlink_rcv_skb+0x133/0x370 [ 82.113411] ? rtnl_bridge_getlink+0x760/0x760 [ 82.117981] ? netlink_ack+0xa00/0xa00 [ 82.121867] ? netlink_deliver_tap+0x8e/0x920 [ 82.126356] rtnetlink_rcv+0x10/0x20 [ 82.130054] netlink_unicast+0x40d/0x5f0 [ 82.134105] ? netlink_attachskb+0x6e0/0x6e0 [ 82.138503] netlink_sendmsg+0x730/0xbd0 [ 82.142560] ? netlink_unicast+0x5f0/0x5f0 [ 82.146780] ? selinux_socket_sendmsg+0x31/0x40 [ 82.151433] ? security_socket_sendmsg+0x6a/0xa0 [ 82.156175] ? netlink_unicast+0x5f0/0x5f0 [ 82.160396] sock_sendmsg+0xb5/0xf0 [ 82.164012] ___sys_sendmsg+0x625/0x920 [ 82.167968] ? trace_hardirqs_off+0x10/0x10 [ 82.172266] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 82.177004] ? find_held_lock+0x36/0x1d0 [ 82.181057] ? lock_downgrade+0x7f0/0x7f0 [ 82.185205] ? __fget+0x1ca/0x2f0 [ 82.188650] ? __fget_light+0x166/0x200 [ 82.192608] ? __fdget+0xe/0x10 [ 82.195868] ? sockfd_lookup_light+0x1c/0x150 [ 82.200351] __sys_sendmsg+0xc1/0x140 [ 82.204137] ? SyS_shutdown+0x180/0x180 [ 82.208094] ? __sb_end_write+0xa4/0xd0 [ 82.212058] ? mutex_unlock+0xd/0x10 [ 82.215769] ? do_syscall_64+0x4c/0x5b0 [ 82.219726] ? __sys_sendmsg+0x140/0x140 [ 82.223771] SyS_sendmsg+0xd/0x20 [ 82.227209] do_syscall_64+0x1c7/0x5b0 [ 82.231086] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 82.236032] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 82.241211] RIP: 0033:0x459ef9 [ 82.244451] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.252160] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 82.259420] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 82.266681] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 82.273943] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 82.281214] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 82.289781] batman_adv: batadv0: Adding interface: hsr_slave_0 [ 82.296176] batman_adv: batadv0: The MTU of interface hsr_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. [ 82.321130] batman_adv: batadv0: Interface activated: hsr_slave_0 [ 82.327840] FAULT_INJECTION: forcing a failure. [ 82.327840] name failslab, interval 1, probability 0, space 0, times 0 [ 82.344429] CPU: 1 PID: 7250 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 [ 82.352241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.361580] Call Trace: [ 82.364156] dump_stack+0xf7/0x13b [ 82.367705] should_fail.cold.3+0x105/0x14b [ 82.372029] should_failslab+0xba/0xf0 [ 82.375904] kmem_cache_alloc+0x2cf/0x790 [ 82.380043] ? memcpy+0x45/0x50 [ 82.383310] ? kstrdup+0x42/0x60 [ 82.386663] __kernfs_new_node+0x63/0x470 [ 82.390802] ? lock_downgrade+0x7f0/0x7f0 [ 82.394941] kernfs_new_node+0x5e/0xe0 [ 82.398817] kernfs_create_link+0x25/0x130 [ 82.403036] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 82.408208] sysfs_create_link+0x43/0xb0 [ 82.412258] netdev_adjacent_sysfs_add+0x94/0xb0 [ 82.417009] ? napi_disable+0x80/0x80 [ 82.420809] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 82.425994] __netdev_upper_dev_link+0x174/0x1f0 [ 82.430755] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 82.435502] netdev_master_upper_dev_link+0x14/0x20 [ 82.440505] batadv_hardif_enable_interface+0x1af/0x990 [ 82.445861] batadv_softif_slave_add+0x82/0xe0 [ 82.450434] do_set_master+0x163/0x1f0 [ 82.454311] do_setlink+0x9dd/0x2c50 [ 82.458013] ? find_held_lock+0x36/0x1d0 [ 82.462068] ? rtnl_register+0x20/0x20 [ 82.465947] ? load_balance+0xb38/0x2190 [ 82.470004] ? lock_downgrade+0x7f0/0x7f0 [ 82.474146] ? lock_pin_lock+0x340/0x340 [ 82.478210] ? __lock_acquire+0x6a4/0x4500 [ 82.482437] ? trace_hardirqs_off+0x10/0x10 [ 82.486799] ? __lock_is_held+0xb5/0x140 [ 82.490858] ? trace_hardirqs_off+0x10/0x10 [ 82.495174] rtnl_newlink+0xe0c/0x1390 [ 82.499057] ? rtnl_link_unregister+0x270/0x270 [ 82.503711] ? finish_task_switch+0x178/0x650 [ 82.508202] ? finish_task_switch+0x14d/0x650 [ 82.512700] ? find_held_lock+0x36/0x1d0 [ 82.516752] ? __mutex_lock+0x8b7/0x14c0 [ 82.520797] ? lock_downgrade+0x7f0/0x7f0 [ 82.524936] ? do_raw_spin_unlock+0x16a/0x250 [ 82.529459] rtnetlink_rcv_msg+0x34f/0x9d0 [ 82.533734] ? rtnl_bridge_getlink+0x760/0x760 [ 82.538301] ? find_held_lock+0x36/0x1d0 [ 82.542344] netlink_rcv_skb+0x133/0x370 [ 82.546390] ? rtnl_bridge_getlink+0x760/0x760 [ 82.550958] ? netlink_ack+0xa00/0xa00 [ 82.554840] ? netlink_deliver_tap+0x8e/0x920 [ 82.559325] rtnetlink_rcv+0x10/0x20 [ 82.563025] netlink_unicast+0x40d/0x5f0 [ 82.567086] ? netlink_attachskb+0x6e0/0x6e0 [ 82.571487] netlink_sendmsg+0x730/0xbd0 [ 82.575533] ? netlink_unicast+0x5f0/0x5f0 [ 82.579758] ? selinux_socket_sendmsg+0x31/0x40 [ 82.584422] ? security_socket_sendmsg+0x6a/0xa0 [ 82.589171] ? netlink_unicast+0x5f0/0x5f0 [ 82.593401] sock_sendmsg+0xb5/0xf0 [ 82.597020] ___sys_sendmsg+0x625/0x920 [ 82.600988] ? trace_hardirqs_off+0x10/0x10 [ 82.605301] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 82.610062] ? find_held_lock+0x36/0x1d0 [ 82.614126] ? lock_downgrade+0x7f0/0x7f0 [ 82.618266] ? __fget+0x1ca/0x2f0 [ 82.621722] ? __fget_light+0x166/0x200 [ 82.625696] ? __fdget+0xe/0x10 [ 82.628962] ? sockfd_lookup_light+0x1c/0x150 [ 82.633445] __sys_sendmsg+0xc1/0x140 [ 82.637235] ? SyS_shutdown+0x180/0x180 [ 82.641202] ? __sb_end_write+0xa4/0xd0 [ 82.645165] ? mutex_unlock+0xd/0x10 [ 82.648869] ? do_syscall_64+0x4c/0x5b0 [ 82.652832] ? __sys_sendmsg+0x140/0x140 [ 82.656881] SyS_sendmsg+0xd/0x20 [ 82.660323] do_syscall_64+0x1c7/0x5b0 [ 82.664200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 82.669042] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 82.674221] RIP: 0033:0x459ef9 [ 82.677394] RSP: 002b:00007fe170b2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.685093] RAX: ffffffffffffffda RBX: 00007fe170b2bc90 RCX: 0000000000459ef9 [ 82.692351] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 82.699619] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 82.706885] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe170b2c6d4 [ 82.714146] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 82.725915] FAULT_INJECTION: forcing a failure. [ 82.725915] name failslab, interval 1, probability 0, space 0, times 0 [ 82.756564] CPU: 0 PID: 7256 Comm: syz-executor.3 Not tainted 4.14.170-syzkaller #0 [ 82.764401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.773756] Call Trace: [ 82.776346] dump_stack+0xf7/0x13b [ 82.779897] should_fail.cold.3+0x105/0x14b [ 82.784233] should_failslab+0xba/0xf0 [ 82.788126] __kmalloc_track_caller+0x2e4/0x7a0 [ 82.792793] ? kstrdup_const+0x1f/0x30 [ 82.796668] kstrdup+0x2c/0x60 [ 82.799853] kstrdup_const+0x1f/0x30 [ 82.803561] __kernfs_new_node+0x27/0x470 [ 82.807693] ? lock_downgrade+0x7f0/0x7f0 [ 82.811844] kernfs_new_node+0x5e/0xe0 [ 82.815788] kernfs_create_link+0x25/0x130 [ 82.820024] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 82.825211] sysfs_create_link+0x43/0xb0 [ 82.829263] netdev_adjacent_sysfs_add+0x94/0xb0 [ 82.834010] ? napi_disable+0x80/0x80 [ 82.837911] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 82.843092] __netdev_upper_dev_link+0x174/0x1f0 [ 82.847840] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 82.852601] netdev_master_upper_dev_link+0x14/0x20 [ 82.857621] batadv_hardif_enable_interface+0x1af/0x990 [ 82.862988] batadv_softif_slave_add+0x82/0xe0 [ 82.867578] do_set_master+0x163/0x1f0 [ 82.871462] do_setlink+0x9dd/0x2c50 [ 82.875183] ? rtnl_register+0x20/0x20 [ 82.879069] ? trace_hardirqs_on+0x10/0x10 [ 82.883296] ? trace_hardirqs_off+0x10/0x10 [ 82.887612] ? find_held_lock+0x36/0x1d0 [ 82.891691] ? find_held_lock+0x36/0x1d0 [ 82.895747] ? free_one_page+0x9c4/0x1050 [ 82.899894] ? lock_downgrade+0x7f0/0x7f0 [ 82.904045] ? __this_cpu_preempt_check+0x13/0x20 [ 82.908880] ? do_raw_spin_unlock+0x16a/0x250 [ 82.913380] rtnl_newlink+0xe0c/0x1390 [ 82.917265] ? rtnl_link_unregister+0x270/0x270 [ 82.921928] ? finish_task_switch+0x448/0x650 [ 82.926421] ? find_held_lock+0x36/0x1d0 [ 82.930481] ? __mutex_lock+0x8b7/0x14c0 [ 82.934534] ? lock_downgrade+0x7f0/0x7f0 [ 82.938673] ? do_raw_spin_unlock+0x16a/0x250 [ 82.943173] rtnetlink_rcv_msg+0x34f/0x9d0 [ 82.947405] ? rtnl_bridge_getlink+0x760/0x760 [ 82.951990] ? find_held_lock+0x36/0x1d0 [ 82.956051] netlink_rcv_skb+0x133/0x370 [ 82.960109] ? rtnl_bridge_getlink+0x760/0x760 [ 82.964696] ? netlink_ack+0xa00/0xa00 [ 82.968586] ? netlink_deliver_tap+0x8e/0x920 [ 82.973075] rtnetlink_rcv+0x10/0x20 [ 82.976780] netlink_unicast+0x40d/0x5f0 [ 82.980839] ? netlink_attachskb+0x6e0/0x6e0 [ 82.985247] netlink_sendmsg+0x730/0xbd0 [ 82.989290] ? netlink_unicast+0x5f0/0x5f0 [ 82.993511] ? selinux_socket_sendmsg+0x31/0x40 [ 82.998166] ? security_socket_sendmsg+0x6a/0xa0 [ 83.003039] ? netlink_unicast+0x5f0/0x5f0 [ 83.007268] sock_sendmsg+0xb5/0xf0 [ 83.010896] ___sys_sendmsg+0x625/0x920 [ 83.014871] ? trace_hardirqs_off+0x10/0x10 [ 83.019176] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 83.023924] ? find_held_lock+0x36/0x1d0 [ 83.027989] ? lock_downgrade+0x7f0/0x7f0 [ 83.032137] ? __fget+0x1ca/0x2f0 [ 83.035597] ? __fget_light+0x166/0x200 [ 83.039567] ? __fdget+0xe/0x10 [ 83.042934] ? sockfd_lookup_light+0x1c/0x150 [ 83.047417] __sys_sendmsg+0xc1/0x140 [ 83.051214] ? SyS_shutdown+0x180/0x180 [ 83.055186] ? __sb_end_write+0xa4/0xd0 [ 83.059145] ? mutex_unlock+0xd/0x10 [ 83.062856] ? do_syscall_64+0x4c/0x5b0 [ 83.066825] ? __sys_sendmsg+0x140/0x140 [ 83.070877] SyS_sendmsg+0xd/0x20 [ 83.074325] do_syscall_64+0x1c7/0x5b0 [ 83.078200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 83.083027] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 83.088199] RIP: 0033:0x459ef9 [ 83.091385] RSP: 002b:00007f65ab45ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.099092] RAX: ffffffffffffffda RBX: 00007f65ab45ec90 RCX: 0000000000459ef9 [ 83.106354] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 83.113619] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 2020/02/11 23:04:52 executed programs: 120 [ 83.120878] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f65ab45f6d4 [ 83.128142] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 83.136980] FAULT_INJECTION: forcing a failure. [ 83.136980] name failslab, interval 1, probability 0, space 0, times 0 [ 83.148917] CPU: 0 PID: 7259 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 [ 83.156739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.166092] Call Trace: [ 83.168689] dump_stack+0xf7/0x13b [ 83.172235] should_fail.cold.3+0x105/0x14b [ 83.176554] should_failslab+0xba/0xf0 [ 83.180440] kmem_cache_alloc+0x2cf/0x790 [ 83.184666] ? memcpy+0x45/0x50 [ 83.187957] ? kstrdup+0x42/0x60 [ 83.191321] __kernfs_new_node+0x63/0x470 [ 83.195467] ? lock_downgrade+0x7f0/0x7f0 [ 83.199601] kernfs_new_node+0x5e/0xe0 [ 83.203476] kernfs_create_link+0x25/0x130 [ 83.207692] sysfs_do_create_link_sd.isra.2+0x7d/0xf0 [ 83.212863] sysfs_create_link+0x43/0xb0 [ 83.216912] netdev_adjacent_sysfs_add+0x94/0xb0 [ 83.221653] ? napi_disable+0x80/0x80 [ 83.225446] __netdev_adjacent_dev_insert+0x46d/0x7b0 [ 83.230626] __netdev_upper_dev_link+0x174/0x1f0 [ 83.235370] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 83.240118] netdev_master_upper_dev_link+0x14/0x20 [ 83.245126] batadv_hardif_enable_interface+0x1af/0x990 [ 83.250489] batadv_softif_slave_add+0x82/0xe0 [ 83.255073] do_set_master+0x163/0x1f0 [ 83.258944] do_setlink+0x9dd/0x2c50 [ 83.262648] ? __lock_acquire+0x6a4/0x4500 [ 83.266880] ? trace_hardirqs_off+0x10/0x10 [ 83.271194] ? rtnl_register+0x20/0x20 [ 83.275079] ? trace_hardirqs_on+0x10/0x10 [ 83.279301] ? __lock_acquire+0x6a4/0x4500 [ 83.283524] ? trace_hardirqs_off+0x10/0x10 [ 83.287849] ? trace_hardirqs_off+0x10/0x10 [ 83.292184] rtnl_newlink+0xe0c/0x1390 [ 83.296067] ? rtnl_link_unregister+0x270/0x270 [ 83.300733] ? finish_task_switch+0x178/0x650 [ 83.305216] ? finish_task_switch+0x14d/0x650 [ 83.309694] ? find_held_lock+0x36/0x1d0 [ 83.313823] ? __mutex_lock+0x8b7/0x14c0 [ 83.317893] ? lock_downgrade+0x7f0/0x7f0 [ 83.322041] ? do_raw_spin_unlock+0x16a/0x250 [ 83.326544] rtnetlink_rcv_msg+0x34f/0x9d0 [ 83.330777] ? rtnl_bridge_getlink+0x760/0x760 [ 83.335361] ? find_held_lock+0x36/0x1d0 [ 83.339422] netlink_rcv_skb+0x133/0x370 [ 83.343475] ? rtnl_bridge_getlink+0x760/0x760 [ 83.348049] ? netlink_ack+0xa00/0xa00 [ 83.351933] ? netlink_deliver_tap+0x8e/0x920 [ 83.356437] rtnetlink_rcv+0x10/0x20 [ 83.360148] netlink_unicast+0x40d/0x5f0 [ 83.364207] ? netlink_attachskb+0x6e0/0x6e0 [ 83.368605] netlink_sendmsg+0x730/0xbd0 [ 83.372667] ? netlink_unicast+0x5f0/0x5f0 [ 83.376899] ? selinux_socket_sendmsg+0x31/0x40 [ 83.381563] ? security_socket_sendmsg+0x6a/0xa0 [ 83.386311] ? netlink_unicast+0x5f0/0x5f0 [ 83.390542] sock_sendmsg+0xb5/0xf0 [ 83.394168] ___sys_sendmsg+0x625/0x920 [ 83.398131] ? trace_hardirqs_off+0x10/0x10 [ 83.402490] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 83.407270] ? find_held_lock+0x36/0x1d0 [ 83.411336] ? lock_downgrade+0x7f0/0x7f0 [ 83.415481] ? __fget+0x1ca/0x2f0 [ 83.418922] ? __fget_light+0x166/0x200 [ 83.422890] ? __fdget+0xe/0x10 [ 83.426174] ? sockfd_lookup_light+0x1c/0x150 [ 83.430669] __sys_sendmsg+0xc1/0x140 [ 83.434471] ? SyS_shutdown+0x180/0x180 [ 83.438441] ? __sb_end_write+0xa4/0xd0 [ 83.442421] ? mutex_unlock+0xd/0x10 [ 83.446138] ? do_syscall_64+0x4c/0x5b0 [ 83.450115] ? __sys_sendmsg+0x140/0x140 [ 83.454183] SyS_sendmsg+0xd/0x20 [ 83.457633] do_syscall_64+0x1c7/0x5b0 [ 83.461519] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 83.466374] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 83.471565] RIP: 0033:0x459ef9 [ 83.474747] RSP: 002b:00007f13871bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.482443] RAX: ffffffffffffffda RBX: 00007f13871bfc90 RCX: 0000000000459ef9 [ 83.489705] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 83.496971] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 83.504229] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13871c06d4 [ 83.511500] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 83.521168] FAULT_INJECTION: forcing a failure. [ 83.521168] name failslab, interval 1, probability 0, space 0, times 0 [ 83.539352] CPU: 1 PID: 7262 Comm: syz-executor.5 Not tainted 4.14.170-syzkaller #0 [ 83.547194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.556544] Call Trace: [ 83.559128] dump_stack+0xf7/0x13b [ 83.562676] should_fail.cold.3+0x105/0x14b [ 83.566993] should_failslab+0xba/0xf0 [ 83.570881] kmem_cache_alloc_node+0x287/0x790 [ 83.575489] __alloc_skb+0x92/0x500 [ 83.579114] ? skb_trim+0x160/0x160 [ 83.582740] ? if_nlmsg_size+0x2d9/0x6f0 [ 83.586796] rtmsg_ifinfo_build_skb+0x68/0x120 [ 83.591417] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 83.596248] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 83.601159] rtnetlink_event+0xc2/0x110 [ 83.605121] notifier_call_chain+0xd6/0x150 [ 83.609436] raw_notifier_call_chain+0x11/0x20 [ 83.614013] call_netdevice_notifiers_info+0x4b/0x60 [ 83.619245] __netdev_upper_dev_link+0x18e/0x1f0 [ 83.623989] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 83.628732] netdev_master_upper_dev_link+0x14/0x20 [ 83.633734] batadv_hardif_enable_interface+0x1af/0x990 [ 83.639083] batadv_softif_slave_add+0x82/0xe0 [ 83.643657] do_set_master+0x163/0x1f0 [ 83.647532] do_setlink+0x9dd/0x2c50 [ 83.651230] ? find_held_lock+0x36/0x1d0 [ 83.655271] ? rtnl_register+0x20/0x20 [ 83.659142] ? load_balance+0xb38/0x2190 [ 83.663188] ? lock_downgrade+0x7f0/0x7f0 [ 83.667312] ? lock_pin_lock+0x340/0x340 [ 83.671354] ? __lock_acquire+0x6a4/0x4500 [ 83.675571] ? trace_hardirqs_off+0x10/0x10 [ 83.679874] ? __lock_is_held+0xb5/0x140 [ 83.683926] ? trace_hardirqs_off+0x10/0x10 [ 83.688409] rtnl_newlink+0xe0c/0x1390 [ 83.692283] ? rtnl_link_unregister+0x270/0x270 [ 83.696939] ? finish_task_switch+0x178/0x650 [ 83.701411] ? finish_task_switch+0x14d/0x650 [ 83.705885] ? find_held_lock+0x36/0x1d0 [ 83.709934] ? __mutex_lock+0x8b7/0x14c0 [ 83.713992] ? lock_downgrade+0x7f0/0x7f0 [ 83.718142] ? do_raw_spin_unlock+0x16a/0x250 [ 83.722646] rtnetlink_rcv_msg+0x34f/0x9d0 [ 83.726869] ? rtnl_bridge_getlink+0x760/0x760 [ 83.731446] ? find_held_lock+0x36/0x1d0 [ 83.735505] netlink_rcv_skb+0x133/0x370 [ 83.739556] ? rtnl_bridge_getlink+0x760/0x760 [ 83.744119] ? netlink_ack+0xa00/0xa00 [ 83.747990] ? netlink_deliver_tap+0x8e/0x920 [ 83.752468] rtnetlink_rcv+0x10/0x20 [ 83.756164] netlink_unicast+0x40d/0x5f0 [ 83.760207] ? netlink_attachskb+0x6e0/0x6e0 [ 83.764612] netlink_sendmsg+0x730/0xbd0 [ 83.768662] ? netlink_unicast+0x5f0/0x5f0 [ 83.772880] ? selinux_socket_sendmsg+0x31/0x40 [ 83.777538] ? security_socket_sendmsg+0x6a/0xa0 [ 83.782274] ? netlink_unicast+0x5f0/0x5f0 [ 83.786494] sock_sendmsg+0xb5/0xf0 [ 83.790102] ___sys_sendmsg+0x625/0x920 [ 83.794059] ? trace_hardirqs_off+0x10/0x10 [ 83.798375] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 83.803129] ? find_held_lock+0x36/0x1d0 [ 83.807191] ? lock_downgrade+0x7f0/0x7f0 [ 83.811340] ? __fget+0x1ca/0x2f0 [ 83.814791] ? __fget_light+0x166/0x200 [ 83.818757] ? __fdget+0xe/0x10 [ 83.822030] ? sockfd_lookup_light+0x1c/0x150 [ 83.826513] __sys_sendmsg+0xc1/0x140 [ 83.830298] ? SyS_shutdown+0x180/0x180 [ 83.834255] ? __sb_end_write+0xa4/0xd0 [ 83.838211] ? mutex_unlock+0xd/0x10 [ 83.841905] ? do_syscall_64+0x4c/0x5b0 [ 83.845884] ? __sys_sendmsg+0x140/0x140 [ 83.849930] SyS_sendmsg+0xd/0x20 [ 83.853391] do_syscall_64+0x1c7/0x5b0 [ 83.857276] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 83.862114] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 83.867299] RIP: 0033:0x459ef9 [ 83.870576] RSP: 002b:00007fb84ffc0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.878283] RAX: ffffffffffffffda RBX: 00007fb84ffc0c90 RCX: 0000000000459ef9 [ 83.885553] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 83.892815] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 83.900080] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb84ffc16d4 [ 83.907344] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 83.918976] batman_adv: batadv0: Adding interface: veth1_to_team [ 83.922815] ------------[ cut here ]------------ [ 83.925205] batman_adv: batadv0: The MTU of interface veth1_to_team 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. [ 83.930061] WARNING: CPU: 0 PID: 303 at net/batman-adv/bat_iv_ogm.c:555 batadv_iv_send_outstanding_bat_ogm_packet+0x5dc/0x770 [ 83.930066] Kernel panic - not syncing: panic_on_warn set ... [ 83.930066] [ 83.930071] CPU: 0 PID: 303 Comm: kworker/u4:3 Not tainted 4.14.170-syzkaller #0 [ 83.930074] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.930083] Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet [ 83.930087] Call Trace: [ 83.930098] dump_stack+0xf7/0x13b [ 83.930104] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5dc/0x770 [ 83.930109] panic+0x1b0/0x358 [ 83.930114] ? add_taint.cold.5+0x11/0x11 [ 83.930126] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5dc/0x770 [ 83.930129] __warn.cold.8+0x25/0x2c [ 83.930135] ? batadv_iv_send_outstanding_bat_ogm_packet+0x5dc/0x770 [ 83.930143] report_bug+0x1a4/0x1f3 [ 83.957677] batman_adv: batadv0: Interface activated: veth1_to_team [ 83.966667] do_error_trap+0x1bd/0x310 [ 83.966674] ? math_error+0x300/0x300 [ 83.966682] ? find_held_lock+0x36/0x1d0 [ 83.966693] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 83.966699] do_invalid_op+0x1b/0x20 [ 83.966705] invalid_op+0x1b/0x40 [ 83.966712] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet+0x5dc/0x770 [ 83.966718] RSP: 0018:ffff8880a9677ce8 EFLAGS: 00010286 [ 83.975999] FAULT_INJECTION: forcing a failure. [ 83.975999] name failslab, interval 1, probability 0, space 0, times 0 [ 83.981607] RAX: ffff888096d64d40 RBX: ffff888091873b88 RCX: 1ffff110128e95ad [ 83.981610] RDX: 0000000000000000 RSI: ffffffff87990fa0 RDI: ffff88809474ad68 [ 83.981613] RBP: ffff8880a9677d60 R08: ffff8880a969af08 R09: 0000000000002bbd [ 83.981615] R10: 0000000000000028 R11: ffff8880a969a640 R12: ffff88808bb7d2c0 [ 83.981618] R13: ffff888091873b40 R14: ffff88809474ad00 R15: ffff888091873c28 [ 83.981643] process_one_work+0x79e/0x16c0 [ 83.981653] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 83.981662] worker_thread+0xcc/0xee0 [ 83.981676] kthread+0x338/0x400 [ 84.144158] ? process_one_work+0x16c0/0x16c0 [ 84.148631] ? kthread_create_on_node+0xa0/0xa0 [ 84.153277] ret_from_fork+0x24/0x30 [ 84.156979] CPU: 1 PID: 7264 Comm: syz-executor.2 Not tainted 4.14.170-syzkaller #0 [ 84.164772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.174111] Call Trace: [ 84.176682] dump_stack+0xf7/0x13b [ 84.180204] should_fail.cold.3+0x105/0x14b [ 84.184508] should_failslab+0xba/0xf0 [ 84.188382] kmem_cache_alloc_node+0x287/0x790 [ 84.192952] __alloc_skb+0x92/0x500 [ 84.196558] ? skb_trim+0x160/0x160 [ 84.200169] ? if_nlmsg_size+0x2d9/0x6f0 [ 84.204215] rtmsg_ifinfo_build_skb+0x68/0x120 [ 84.208785] rtmsg_ifinfo_event.part.27+0x16/0xb0 [ 84.213625] ? netdev_adjacent_sysfs_add+0x94/0xb0 [ 84.218554] rtnetlink_event+0xc2/0x110 [ 84.222518] notifier_call_chain+0xd6/0x150 [ 84.226825] raw_notifier_call_chain+0x11/0x20 [ 84.231389] call_netdevice_notifiers_info+0x4b/0x60 [ 84.236472] __netdev_upper_dev_link+0x18e/0x1f0 [ 84.241210] ? netdev_upper_dev_unlink+0xe0/0xe0 [ 84.245951] netdev_master_upper_dev_link+0x14/0x20 [ 84.250965] batadv_hardif_enable_interface+0x1af/0x990 [ 84.256324] batadv_softif_slave_add+0x82/0xe0 [ 84.260897] do_set_master+0x163/0x1f0 [ 84.264790] do_setlink+0x9dd/0x2c50 [ 84.268494] ? rtnl_register+0x20/0x20 [ 84.272370] ? trace_hardirqs_on+0x10/0x10 [ 84.276599] ? trace_hardirqs_off+0x10/0x10 [ 84.280903] ? find_held_lock+0x36/0x1d0 [ 84.284949] ? find_held_lock+0x36/0x1d0 [ 84.288996] ? free_one_page+0x9c4/0x1050 [ 84.293126] ? lock_downgrade+0x7f0/0x7f0 [ 84.297279] ? __this_cpu_preempt_check+0x13/0x20 [ 84.302102] ? do_raw_spin_unlock+0x16a/0x250 [ 84.306585] rtnl_newlink+0xe0c/0x1390 [ 84.310534] ? rtnl_link_unregister+0x270/0x270 [ 84.315196] ? finish_task_switch+0x448/0x650 [ 84.319673] ? find_held_lock+0x36/0x1d0 [ 84.323717] ? __mutex_lock+0x8b7/0x14c0 [ 84.327768] ? lock_downgrade+0x7f0/0x7f0 [ 84.331900] ? do_raw_spin_unlock+0x16a/0x250 [ 84.336401] rtnetlink_rcv_msg+0x34f/0x9d0 [ 84.340620] ? rtnl_bridge_getlink+0x760/0x760 [ 84.345182] ? find_held_lock+0x36/0x1d0 [ 84.349226] netlink_rcv_skb+0x133/0x370 [ 84.353269] ? rtnl_bridge_getlink+0x760/0x760 [ 84.357828] ? netlink_ack+0xa00/0xa00 [ 84.361702] ? netlink_deliver_tap+0x8e/0x920 [ 84.366180] rtnetlink_rcv+0x10/0x20 [ 84.369874] netlink_unicast+0x40d/0x5f0 [ 84.373943] ? netlink_attachskb+0x6e0/0x6e0 [ 84.378362] netlink_sendmsg+0x730/0xbd0 [ 84.382445] ? netlink_unicast+0x5f0/0x5f0 [ 84.386669] ? selinux_socket_sendmsg+0x31/0x40 [ 84.391322] ? security_socket_sendmsg+0x6a/0xa0 [ 84.396061] ? netlink_unicast+0x5f0/0x5f0 [ 84.400277] sock_sendmsg+0xb5/0xf0 [ 84.403888] ___sys_sendmsg+0x625/0x920 [ 84.407870] ? trace_hardirqs_off+0x10/0x10 [ 84.412175] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 84.416912] ? find_held_lock+0x36/0x1d0 [ 84.420976] ? lock_downgrade+0x7f0/0x7f0 [ 84.425118] ? __fget+0x1ca/0x2f0 [ 84.428563] ? __fget_light+0x166/0x200 [ 84.432533] ? __fdget+0xe/0x10 [ 84.435798] ? sockfd_lookup_light+0x1c/0x150 [ 84.440275] __sys_sendmsg+0xc1/0x140 [ 84.444054] ? SyS_shutdown+0x180/0x180 [ 84.448010] ? __sb_end_write+0xa4/0xd0 [ 84.451988] ? mutex_unlock+0xd/0x10 [ 84.455688] ? do_syscall_64+0x4c/0x5b0 [ 84.459645] ? __sys_sendmsg+0x140/0x140 [ 84.463685] SyS_sendmsg+0xd/0x20 [ 84.467115] do_syscall_64+0x1c7/0x5b0 [ 84.470980] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.475808] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 84.480978] RIP: 0033:0x459ef9 [ 84.484151] RSP: 002b:00007ff9065b3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 84.491838] RAX: ffffffffffffffda RBX: 00007ff9065b3c90 RCX: 0000000000459ef9 [ 84.499092] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 84.506344] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 84.513599] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9065b46d4 [ 84.520848] R13: 00000000004c81fc R14: 00000000004de220 R15: 0000000000000006 [ 84.529222] Kernel Offset: disabled [ 84.532917] Rebooting in 86400 seconds..