syzkaller login: [ 100.573716][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 100.597725][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 100.614916][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 120.158953][ C1] hrtimer: interrupt took 59816576 ns Warning: Permanently added '[localhost]:39934' (ECDSA) to the list of known hosts. 1970/01/01 00:02:00 fuzzer started 1970/01/01 00:02:03 connecting to host at localhost:34093 1970/01/01 00:02:03 checking machine... 1970/01/01 00:02:03 checking revisions... 1970/01/01 00:02:05 testing simple program... executing program executing program [ 133.004750][ T3328] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 133.061980][ T3328] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 135.986000][ T3328] device hsr_slave_0 entered promiscuous mode [ 136.037044][ T3328] device hsr_slave_1 entered promiscuous mode executing program [ 138.133117][ T3328] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 138.241353][ T3328] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 138.354897][ T3328] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 138.476853][ T3328] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 140.565787][ T3328] 8021q: adding VLAN 0 to HW filter on device bond0 [ 140.781581][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 140.862859][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 142.367759][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 142.390670][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 142.531455][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 142.541947][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 142.708182][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 142.781163][ T2933] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 143.081758][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready executing program [ 143.099927][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 143.179811][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 143.188014][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 143.267120][ T3328] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 143.535055][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 143.537366][ T3504] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 146.276120][ T2933] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 146.286424][ T2933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 147.572940][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 147.641402][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 147.656788][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 147.684728][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 147.806181][ T3328] device veth0_vlan entered promiscuous mode [ 148.016440][ T3328] device veth1_vlan entered promiscuous mode [ 148.646616][ T2933] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 148.684224][ T2933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 148.804645][ T3328] device veth0_macvtap entered promiscuous mode [ 148.948454][ T3328] device veth1_macvtap entered promiscuous mode executing program [ 149.247676][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 149.270422][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 149.286399][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 149.499008][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 149.507947][ T3098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 149.592572][ T3328] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.594059][ T3328] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.595213][ T3328] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.596474][ T3328] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 150.554931][ T3328] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 151.545579][ T10] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:02:30 building call list... [ 151.726738][ T10] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 151.960708][ T10] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 152.248119][ T10] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 155.191003][ T10] device hsr_slave_0 left promiscuous mode [ 155.252958][ T10] device hsr_slave_1 left promiscuous mode [ 155.413721][ T10] device veth1_macvtap left promiscuous mode [ 155.416445][ T10] device veth0_macvtap left promiscuous mode [ 155.431049][ T10] device veth1_vlan left promiscuous mode [ 155.433650][ T10] device veth0_vlan left promiscuous mode [ 156.905451][ T22] ================================================================== [ 156.909038][ T22] BUG: KASAN: invalid-access in __entry_tramp_text_end+0xdfc/0xa000 [ 156.913339][ T22] Read at addr fcff0000029cb0e0 by task kdevtmpfs/22 [ 156.916819][ T22] Pointer tag: [fc], memory tag: [fe] [ 156.917685][ T22] [ 156.918680][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller-06779-g477f70cd2a67 #0 [ 156.920114][ T22] Hardware name: linux,dummy-virt (DT) [ 156.921208][ T22] Call trace: [ 156.921775][ T22] dump_backtrace+0x0/0x1b0 [ 156.922578][ T22] show_stack+0x18/0x24 [ 156.924346][ T22] dump_stack_lvl+0x68/0x84 [ 156.926134][ T22] print_address_description+0x7c/0x2b4 [ 156.928212][ T22] kasan_report+0x134/0x380 [ 156.930824][ T22] __do_kernel_fault+0x1a8/0x1dc [ 156.933437][ T22] do_tag_check_fault+0x74/0x90 [ 156.935080][ T22] do_mem_abort+0x44/0xb4 [ 156.935847][ T22] el1_abort+0x40/0x60 [ 156.937034][ T22] el1h_64_sync_handler+0xb0/0xd0 [ 156.937844][ T22] el1h_64_sync+0x78/0x7c [ 156.938597][ T22] __entry_tramp_text_end+0xdfc/0xa000 [ 156.939589][ T22] d_lookup+0x44/0x70 [ 156.940490][ T22] lookup_dcache+0x24/0x84 [ 156.942132][ T22] __lookup_hash+0x24/0xd0 [ 156.943853][ T22] kern_path_locked+0x90/0x10c [ 156.945668][ T22] handle_remove+0x38/0x284 [ 156.947383][ T22] devtmpfsd+0x8c/0xd0 [ 156.949281][ T22] kthread+0x150/0x15c [ 156.951588][ T22] ret_from_fork+0x10/0x18 [ 156.953716][ T22] [ 156.954311][ T22] Allocated by task 22: [ 156.955052][ T22] kasan_save_stack+0x28/0x60 [ 156.955976][ T22] __kasan_slab_alloc+0xb0/0x110 [ 156.956720][ T22] kmem_cache_alloc+0x1cc/0x340 [ 156.957464][ T22] getname_kernel+0x30/0x150 [ 156.958202][ T22] kern_path_locked+0x2c/0x10c [ 156.958938][ T22] handle_remove+0x38/0x284 [ 156.975545][ T22] devtmpfsd+0x8c/0xd0 [ 156.976303][ T22] kthread+0x150/0x15c [ 156.976980][ T22] ret_from_fork+0x10/0x18 [ 156.977787][ T22] [ 156.978338][ T22] Freed by task 22: [ 156.978958][ T22] kasan_save_stack+0x28/0x60 [ 156.979670][ T22] kasan_set_track+0x28/0x3c [ 156.980415][ T22] kasan_set_free_info+0x20/0x30 [ 156.981199][ T22] ____kasan_slab_free.constprop.0+0x178/0x1e0 [ 156.982051][ T22] __kasan_slab_free+0x10/0x1c [ 156.982822][ T22] slab_free_freelist_hook+0xc4/0x20c [ 156.983604][ T22] kmem_cache_free+0x9c/0x420 [ 156.984387][ T22] putname.part.0+0x68/0x7c [ 156.985152][ T22] kern_path_locked+0x64/0x10c [ 156.985850][ T22] handle_remove+0x38/0x284 [ 156.986607][ T22] devtmpfsd+0x8c/0xd0 [ 156.987346][ T22] kthread+0x150/0x15c [ 156.988052][ T22] ret_from_fork+0x10/0x18 [ 156.988819][ T22] [ 156.989310][ T22] The buggy address belongs to the object at ffff0000029cb0c0 [ 156.989310][ T22] which belongs to the cache names_cache of size 4096 [ 156.990875][ T22] The buggy address is located 32 bytes inside of [ 156.990875][ T22] 4096-byte region [ffff0000029cb0c0, ffff0000029cc0c0) [ 156.999938][ T22] The buggy address belongs to the page: [ 157.000920][ T22] page:00000000a247c057 refcount:1 mapcount:0 mapping:0000000000000000 index:0xf8ff0000029cc100 pfn:0x429c8 [ 157.002483][ T22] head:00000000a247c057 order:3 compound_mapcount:0 compound_pincount:0 [ 157.003608][ T22] flags: 0x1ffc00000010200(slab|head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) [ 157.005372][ T22] raw: 01ffc00000010200 0000000000000000 dead000000000122 f1ff000002837700 [ 157.006517][ T22] raw: f8ff0000029cc100 0000000080070005 00000001ffffffff 0000000000000000 [ 157.007633][ T22] page dumped because: kasan: bad access detected [ 157.008512][ T22] [ 157.009032][ T22] Memory state around the buggy address: [ 157.009972][ T22] ffff0000029cae00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 157.011018][ T22] ffff0000029caf00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 157.029524][ T22] >ffff0000029cb000: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 157.030521][ T22] ^ [ 157.031614][ T22] ffff0000029cb100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 157.032576][ T22] ffff0000029cb200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 157.033590][ T22] ================================================================== [ 157.034577][ T22] Disabling lock debugging due to kernel taint executing program [ 158.270492][ T10] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 158.483297][ T10] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 159.075820][ T10] bond0 (unregistering): Released all slaves executing program executing program executing program executing program executing program executing program [ 178.679640][ T3324] can: request_module (can-proto-0) failed. [ 178.916749][ T3324] can: request_module (can-proto-0) failed. [ 179.072076][ T3324] can: request_module (can-proto-0) failed. executing program executing program [ 184.603742][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 184.620248][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 184.626319][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 184.640688][ T3166] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program VM DIAGNOSIS: 19:42:50 Registers: info registers vcpu 0 PC=ffff80001111dfe8 X00=ffff80001111dfe0 X01=00000000ffffc7a2 X02=0000000000000001 X03=ffff00007fba2ac0 X04=0000000000000000 X05=0000000000000005 X06=0000000000000023 X07=fffffff800000000 X08=0000000000000001 X09=ffff00007fb9be28 X10=ffff80006d9b1000 X11=000000000000000a X12=000000000000023f X13=ffff800012207000 X14=0000000000004349 X15=00004c4b40000000 X16=ffff800010004000 X17=ffff80006d9b1000 X18=00000000fffffffd X19=ffff80001231f0c8 X20=ffff80001231f0c0 X21=0000000000000000 X22=0000000000000004 X23=ffff80001231f0c8 X24=0000000000000028 X25=ffff8000122060d0 X26=ffff800012229840 X27=0000000000000002 X28=0000000000000001 X29=ffff800010003d90 X30=3cb780001013e9e0 SP=ffff800010003d90 PSTATE=204000c9 --C- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000000 Z01=0000000000000000:c1162e42fefa39ef Z02=69d728e936399234:4eb44bded445daba Z03=0000000040000000:0000000000000000 Z04=4010040140100401:4000000000000000 Z05=4010040140100401:4010040140100401 Z06=5555400000400000:5555400000400000 Z07=0000000000000000:0000000000000000 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000010:0000001be5a79a10 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80001077ee0c X00=0000000000000090 X01=0000000000000002 X02=ffff8000125d5018 X03=0000000000000018 X04=f7ff000002bb3080 X05=0000000000000064 X06=392e36353120205b X07=205b5d3933333331 X08=3932303030303066 X09=7962203065306263 X10=6263393230303030 X11=7420796220306530 X12=5b5d393333333139 X13=205d323254202020 X14=0000000000000000 X15=0000000000000020 X16=6478302b646e655f X17=30306178302f6366 X18=00000000fffffffd X19=ffff8000124489c7 X20=ffff80001077ede4 X21=f7ff000002bb3080 X22=ffff8000124489d2 X23=0000000000000f01 X24=000000000000004a X25=ffff80001220ff90 X26=ffff80001235e718 X27=ffff800012448988 X28=ffff8000124487d8 X29=ffff80001269b5a0 X30=ffff80001077ee0c SP=ffff80001269b5a0 PSTATE=804000c9 N--- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000000 Z01=0000000000000000:c1162e42fefa39ef Z02=69d728e936399234:4eb44bded445daba Z03=0000000040000000:0000000000000000 Z04=4010040140100401:4000000000000000 Z05=4010040140100401:4010040140100401 Z06=5555400000400000:5555400000400000 Z07=0000000000000000:0000000000000000 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000010:0000001be5a79a10 Z31=0000000000000000:0000000000000000