syzkaller login: [ 97.144790][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 97.161973][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 97.193061][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:38535' (ECDSA) to the list of known hosts. 1970/01/01 00:01:48 fuzzer started 1970/01/01 00:01:51 connecting to host at localhost:38443 1970/01/01 00:01:51 checking machine... 1970/01/01 00:01:51 checking revisions... 1970/01/01 00:01:53 testing simple program... executing program executing program [ 120.153123][ T3333] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 120.197078][ T3333] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 122.625791][ T3333] device hsr_slave_0 entered promiscuous mode [ 122.693167][ T3333] device hsr_slave_1 entered promiscuous mode executing program [ 124.970960][ T3333] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 125.148289][ T3333] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 125.247876][ T3333] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 125.396097][ T3333] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 127.292384][ T3333] 8021q: adding VLAN 0 to HW filter on device bond0 [ 127.446081][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 127.461885][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 128.324043][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 128.341303][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 128.388417][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 128.397020][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 128.455827][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 128.505338][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 128.742015][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 128.764356][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 128.842080][ T2272] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 128.856007][ T2272] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 128.942307][ T3333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 129.216982][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 129.221431][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 131.367279][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 131.375184][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 132.524053][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 132.543104][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 132.556973][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 132.572799][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 132.632247][ T3333] device veth0_vlan entered promiscuous mode [ 132.765137][ T3333] device veth1_vlan entered promiscuous mode [ 133.178355][ T2272] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 133.188558][ T2272] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 133.257872][ T3333] device veth0_macvtap entered promiscuous mode [ 133.361157][ T3333] device veth1_macvtap entered promiscuous mode [ 133.543398][ T2272] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 133.558230][ T2272] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 133.641975][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 133.658144][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready executing program [ 133.734706][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 133.745731][ T3650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 133.815626][ T3333] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 133.817052][ T3333] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 133.818173][ T3333] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 133.821157][ T3333] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 134.478099][ T3333] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation 1970/01/01 00:02:14 building call list... [ 135.453517][ T2254] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.630731][ T2254] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.771491][ T2254] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.923471][ T2254] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 138.830318][ T2254] device hsr_slave_0 left promiscuous mode [ 138.883943][ T2254] device hsr_slave_1 left promiscuous mode [ 139.022707][ T2254] device veth1_macvtap left promiscuous mode [ 139.023825][ T2254] device veth0_macvtap left promiscuous mode [ 139.025431][ T2254] device veth1_vlan left promiscuous mode [ 139.026612][ T2254] device veth0_vlan left promiscuous mode executing program [ 140.650340][ T22] ================================================================== [ 140.651431][ T22] BUG: KASAN: invalid-access in __entry_tramp_text_end+0xdfc/0x6000 [ 140.652963][ T22] Read at addr f1ff000002a34120 by task kdevtmpfs/22 [ 140.653868][ T22] Pointer tag: [f1], memory tag: [fe] [ 140.654943][ T22] [ 140.656358][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller-09416-g49624efa65ac #0 [ 140.657646][ T22] Hardware name: linux,dummy-virt (DT) [ 140.658685][ T22] Call trace: [ 140.659648][ T22] dump_backtrace+0x0/0x1ac [ 140.661826][ T22] show_stack+0x18/0x24 [ 140.662551][ T22] dump_stack_lvl+0x68/0x84 [ 140.663342][ T22] print_address_description+0x7c/0x2b4 [ 140.664160][ T22] kasan_report+0x134/0x380 [ 140.664901][ T22] __do_kernel_fault+0x128/0x1bc [ 140.666701][ T22] do_tag_check_fault+0x74/0x90 [ 140.668508][ T22] do_mem_abort+0x44/0xb4 [ 140.670713][ T22] el1_abort+0x40/0x60 [ 140.672377][ T22] el1h_64_sync_handler+0xb0/0xd0 [ 140.674172][ T22] el1h_64_sync+0x78/0x7c [ 140.675289][ T22] __entry_tramp_text_end+0xdfc/0x6000 [ 140.676022][ T22] d_lookup+0x44/0x70 [ 140.676649][ T22] lookup_dcache+0x24/0x84 [ 140.677342][ T22] __lookup_hash+0x24/0xd0 [ 140.678033][ T22] kern_path_locked+0x90/0x10c [ 140.678752][ T22] handle_remove+0x38/0x284 [ 140.679543][ T22] devtmpfsd+0x8c/0xd0 [ 140.680329][ T22] kthread+0x150/0x15c [ 140.680998][ T22] ret_from_fork+0x10/0x20 [ 140.682777][ T22] [ 140.683830][ T22] Allocated by task 22: [ 140.685380][ T22] kasan_save_stack+0x28/0x60 [ 140.687254][ T22] __kasan_slab_alloc+0xb0/0x110 [ 140.689161][ T22] kmem_cache_alloc+0x1cc/0x340 [ 140.691564][ T22] getname_kernel+0x30/0x150 [ 140.693262][ T22] kern_path_locked+0x2c/0x10c [ 140.694486][ T22] handle_remove+0x38/0x284 [ 140.695238][ T22] devtmpfsd+0x8c/0xd0 [ 140.695885][ T22] kthread+0x150/0x15c [ 140.696502][ T22] ret_from_fork+0x10/0x20 [ 140.697275][ T22] [ 140.697776][ T22] Freed by task 22: [ 140.698359][ T22] kasan_save_stack+0x28/0x60 [ 140.699435][ T22] kasan_set_track+0x28/0x3c [ 140.700159][ T22] kasan_set_free_info+0x20/0x30 [ 140.700850][ T22] ____kasan_slab_free.constprop.0+0x178/0x1e0 [ 140.701657][ T22] __kasan_slab_free+0x10/0x1c [ 140.702334][ T22] slab_free_freelist_hook+0xc4/0x20c [ 140.703173][ T22] kmem_cache_free+0x9c/0x420 [ 140.704127][ T22] putname.part.0+0x68/0x7c [ 140.704767][ T22] kern_path_locked+0x64/0x10c [ 140.705447][ T22] handle_remove+0x38/0x284 [ 140.706126][ T22] devtmpfsd+0x8c/0xd0 [ 140.706743][ T22] kthread+0x150/0x15c [ 140.708283][ T22] ret_from_fork+0x10/0x20 [ 140.710515][ T22] [ 140.711783][ T22] The buggy address belongs to the object at ffff000002a34100 [ 140.711783][ T22] which belongs to the cache names_cache of size 4096 [ 140.714692][ T22] The buggy address is located 32 bytes inside of [ 140.714692][ T22] 4096-byte region [ffff000002a34100, ffff000002a35100) [ 140.716158][ T22] The buggy address belongs to the page: [ 140.717070][ T22] page:00000000e99b6428 refcount:1 mapcount:0 mapping:0000000000000000 index:0xf5ff000002a30000 pfn:0x42a30 [ 140.718514][ T22] head:00000000e99b6428 order:3 compound_mapcount:0 compound_pincount:0 [ 140.720085][ T22] flags: 0x1ffc00000010200(slab|head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) [ 140.721854][ T22] raw: 01ffc00000010200 0000000000000000 dead000000000122 f3ff000002837700 [ 140.723016][ T22] raw: f5ff000002a30000 0000000080070004 00000001ffffffff 0000000000000000 [ 140.724132][ T22] page dumped because: kasan: bad access detected [ 140.724946][ T22] [ 140.725412][ T22] Memory state around the buggy address: [ 140.726507][ T22] ffff000002a33f00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 140.727490][ T22] ffff000002a34000: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 140.728400][ T22] >ffff000002a34100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 140.729727][ T22] ^ [ 140.730521][ T22] ffff000002a34200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 140.731434][ T22] ffff000002a34300: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 140.732377][ T22] ================================================================== [ 140.733276][ T22] Disabling lock debugging due to kernel taint [ 141.891157][ T2254] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 142.092641][ T2254] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 142.640228][ T2254] bond0 (unregistering): Released all slaves executing program executing program executing program executing program executing program executing program [ 160.241548][ T3323] can: request_module (can-proto-0) failed. [ 160.423631][ T3323] can: request_module (can-proto-0) failed. [ 160.586272][ T3323] can: request_module (can-proto-0) failed. executing program executing program [ 164.496540][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 164.525749][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program [ 168.327952][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 168.346632][ T3170] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program VM DIAGNOSIS: 19:16:11 Registers: info registers vcpu 0 PC=ffff8000100121fc X00=00000000000000e0 X01=ffff00007fbc3960 X02=0000000000005aad X03=0000000000000000 X04=0000000000006cf8 X05=00ffffffffffffff X06=000000020e7aa159 X07=000000000000000c X08=ffff80001220a748 X09=84a0637e5965384b X10=57742eb8e747853a X11=ffff800011dee130 X12=0000000000000000 X13=0000000000000000 X14=00000000000000ac X15=0000a51b77a3d1ae X16=ffff8000102803f0 X17=ffff800011318bc4 X18=00000000fffffffd X19=0000000000000000 X20=ffff8000121f0010 X21=ffff8000121eff90 X22=ffff8000121d03e8 X23=ffff8000121f0054 X24=0000000000000000 X25=0000000000000000 X26=ffff800012209880 X27=0000000000000000 X28=00000000422f0018 X29=ffff8000121e3d60 X30=ffff80001177a6d8 SP=ffff8000121e3d60 PSTATE=604003c9 -ZC- 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=7cb9c6833c4fe7cc:ae2c5ec9c2e375d7 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=0000000000000010:000000192a602810 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff800010103b84 X00=ffff80001221d190 X01=ffff80001267b578 X02=ffff80001267b540 X03=ffff80001267b4a0 X04=0000000000000000 X05=0000000000010b70 X06=fffffffffffcc2f8 X07=80000000ffffe30a X08=0000000000000000 X09=ffff8000122cd1e0 X10=ffff80001222dd50 X11=2d36313439302d72 X12=6665343236393467 X13=000000000000030a X14=746e69617420746f X15=2e34312e35206465 X16=6c616b7a79732d30 X17=313439302d72656c X18=00000000fffffffd X19=ffff8000121f0058 X20=0000000000000052 X21=00000000ffffffff X22=ffff800012429de0 X23=0000000000000000 X24=00000000000003fe X25=ffff80001267b618 X26=0000000000000052 X27=ffff800012429948 X28=ffff80001221d0b0 X29=ffff80001267b3f0 X30=c3c68000105fe444 SP=ffff80001267b370 PSTATE=604000c9 -ZC- 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=7cb9c6833c4fe7cc:ae2c5ec9c2e375d7 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=0000000000000010:000000192a602810 Z31=0000000000000000:0000000000000000