syzkaller login: [ 106.304952][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 106.322546][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 106.338723][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:3336' (ECDSA) to the list of known hosts. 1970/01/01 00:02:02 fuzzer started 1970/01/01 00:02:05 connecting to host at localhost:42969 1970/01/01 00:02:06 checking machine... 1970/01/01 00:02:06 checking revisions... 1970/01/01 00:02:07 testing simple program... executing program executing program [ 135.924548][ T3321] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 135.974332][ T3321] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 138.765326][ T3321] device hsr_slave_0 entered promiscuous mode [ 138.861055][ T3321] device hsr_slave_1 entered promiscuous mode executing program [ 140.890062][ T3321] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 141.004910][ T3321] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 141.102389][ T3321] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 141.188202][ T3321] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 143.448672][ T3321] 8021q: adding VLAN 0 to HW filter on device bond0 [ 143.603925][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 143.614496][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 144.804824][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 144.815186][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 144.955385][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 144.964846][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.033623][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready executing program [ 145.215252][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 145.519263][ T2113] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 145.542734][ T2113] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 145.628878][ T3570] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 145.645054][ T3570] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 145.715672][ T3321] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 146.016980][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 146.019441][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 148.267478][ T2113] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 148.273239][ T2113] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 149.287696][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 149.308029][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 149.315737][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 149.333201][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 149.429673][ T3321] device veth0_vlan entered promiscuous mode [ 149.559209][ T3321] device veth1_vlan entered promiscuous mode [ 149.898583][ T3570] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 149.920965][ T3570] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 149.979818][ T3321] device veth0_macvtap entered promiscuous mode [ 150.140738][ T3321] device veth1_macvtap entered promiscuous mode [ 150.312469][ T2113] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 150.334141][ T2113] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 150.414054][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 150.423902][ T3092] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 150.528660][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 150.552016][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 150.620810][ T3321] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 150.622341][ T3321] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 150.623488][ T3321] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 150.624615][ T3321] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 151.683010][ T3321] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 152.699044][ T28] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:02:31 building call list... [ 152.880589][ T28] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.042196][ T28] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.249609][ T28] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 156.251478][ T28] device hsr_slave_0 left promiscuous mode [ 156.330688][ T28] device hsr_slave_1 left promiscuous mode [ 156.495118][ T28] device veth1_macvtap left promiscuous mode [ 156.512695][ T28] device veth0_macvtap left promiscuous mode [ 156.515138][ T28] device veth1_vlan left promiscuous mode [ 156.537667][ T28] device veth0_vlan left promiscuous mode executing program [ 157.951905][ T22] ================================================================== [ 157.952964][ T22] BUG: KASAN: invalid-access in __entry_tramp_text_end+0xdfc/0xf000 [ 157.954624][ T22] Read at addr f3ff000002985160 by task kdevtmpfs/22 [ 157.955584][ T22] Pointer tag: [f3], memory tag: [fe] [ 157.957735][ T22] [ 157.959311][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller-04526-gebf435d3b51b #0 [ 157.960757][ T22] Hardware name: linux,dummy-virt (DT) [ 157.961842][ T22] Call trace: [ 157.962521][ T22] dump_backtrace+0x0/0x1b0 [ 157.963420][ T22] show_stack+0x18/0x24 [ 157.964264][ T22] dump_stack_lvl+0x68/0x84 [ 157.965105][ T22] print_address_description+0x7c/0x2b4 [ 157.965990][ T22] kasan_report+0x134/0x380 [ 157.966957][ T22] __do_kernel_fault+0x1a8/0x1dc [ 157.967814][ T22] do_tag_check_fault+0x74/0x90 [ 157.969414][ T22] do_mem_abort+0x44/0xb4 [ 157.971031][ T22] el1_abort+0x40/0x60 [ 157.972561][ T22] el1h_64_sync_handler+0xb0/0xd0 [ 157.974429][ T22] el1h_64_sync+0x78/0x7c [ 157.976035][ T22] __entry_tramp_text_end+0xdfc/0xf000 [ 157.977569][ T22] d_lookup+0x44/0x70 [ 157.979224][ T22] lookup_dcache+0x24/0x84 [ 157.981707][ T22] __lookup_hash+0x24/0xd0 [ 157.984143][ T22] kern_path_locked+0x90/0x10c [ 157.986747][ T22] handle_remove+0x38/0x284 [ 157.988686][ T22] devtmpfsd+0x8c/0xd0 [ 157.990698][ T22] kthread+0x150/0x15c [ 157.992762][ T22] ret_from_fork+0x10/0x18 [ 157.995408][ T22] [ 157.996924][ T22] Allocated by task 22: [ 157.999522][ T22] kasan_save_stack+0x28/0x60 [ 158.002486][ T22] __kasan_slab_alloc+0xb0/0x110 [ 158.005139][ T22] kmem_cache_alloc+0x1cc/0x340 [ 158.007495][ T22] getname_kernel+0x30/0x150 [ 158.008595][ T22] kern_path_locked+0x2c/0x10c [ 158.009828][ T22] handle_remove+0x38/0x284 [ 158.011265][ T22] devtmpfsd+0x8c/0xd0 [ 158.012271][ T22] kthread+0x150/0x15c [ 158.013278][ T22] ret_from_fork+0x10/0x18 [ 158.014581][ T22] [ 158.015392][ T22] Freed by task 22: [ 158.016312][ T22] kasan_save_stack+0x28/0x60 [ 158.017413][ T22] kasan_set_track+0x28/0x3c [ 158.018461][ T22] kasan_set_free_info+0x20/0x30 [ 158.019771][ T22] ____kasan_slab_free.constprop.0+0x178/0x1e0 [ 158.021045][ T22] __kasan_slab_free+0x10/0x1c [ 158.022104][ T22] slab_free_freelist_hook+0xc4/0x20c [ 158.023405][ T22] kmem_cache_free+0x9c/0x420 [ 158.024433][ T22] putname.part.0+0x68/0x7c [ 158.025567][ T22] kern_path_locked+0x64/0x10c [ 158.026685][ T22] handle_remove+0x38/0x284 [ 158.027745][ T22] devtmpfsd+0x8c/0xd0 [ 158.028664][ T22] kthread+0x150/0x15c [ 158.029722][ T22] ret_from_fork+0x10/0x18 [ 158.030858][ T22] [ 158.031536][ T22] The buggy address belongs to the object at ffff000002985140 [ 158.031536][ T22] which belongs to the cache names_cache of size 4096 [ 158.033982][ T22] The buggy address is located 32 bytes inside of [ 158.033982][ T22] 4096-byte region [ffff000002985140, ffff000002986140) [ 158.036749][ T22] The buggy address belongs to the page: [ 158.038191][ T22] page:000000006c062e74 refcount:1 mapcount:0 mapping:0000000000000000 index:0xf2ff000002984100 pfn:0x42980 [ 158.039782][ T22] head:000000006c062e74 order:3 compound_mapcount:0 compound_pincount:0 [ 158.040819][ T22] flags: 0x1ffc00000010200(slab|head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) [ 158.043111][ T22] raw: 01ffc00000010200 0000000000000000 dead000000000122 f9ff000002837700 [ 158.044460][ T22] raw: f2ff000002984100 0000000080070001 00000001ffffffff 0000000000000000 [ 158.045560][ T22] page dumped because: kasan: bad access detected [ 158.046475][ T22] [ 158.046980][ T22] Memory state around the buggy address: [ 158.047971][ T22] ffff000002984f00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 158.049084][ T22] ffff000002985000: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 158.050133][ T22] >ffff000002985100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 158.051143][ T22] ^ [ 158.052000][ T22] ffff000002985200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 158.052994][ T22] ffff000002985300: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 158.054076][ T22] ================================================================== [ 158.055161][ T22] Disabling lock debugging due to kernel taint [ 159.390819][ T28] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 159.524398][ T28] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 160.201473][ T28] bond0 (unregistering): Released all slaves executing program executing program executing program executing program executing program executing program [ 178.384144][ T3313] can: request_module (can-proto-0) failed. [ 178.648466][ T3313] can: request_module (can-proto-0) failed. [ 178.808788][ T3313] can: request_module (can-proto-0) failed. executing program executing program [ 186.354901][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 186.361663][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 186.365460][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 186.370511][ T3159] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program VM DIAGNOSIS: 17:32:47 Registers: info registers vcpu 0 PC=ffff80001076c970 X00=ffff8000125d5000 X01=0000000000000002 X02=0000000000000000 X03=0000000000000018 X04=fbff000002b78080 X05=0000000000000039 X06=392e37353120205b X07=205b5d3438353535 X08=726f6d656d202c5d X09=5b203a6761742079 X10=676174207265746e X11=202c5d33665b203a X12=5b5d343835353539 X13=205d323254202020 X14=0000000000000000 X15=0000000000000020 X16=6478302b646e655f X17=30306678302f6366 X18=00000000fffffffd X19=ffff800012448990 X20=ffff80001077fce4 X21=fbff000002b78080 X22=ffff8000124489c3 X23=0000000000000f01 X24=000000000000003b X25=ffff80001220ff90 X26=ffff80001235e718 X27=ffff800012448988 X28=ffff8000124487d8 X29=ffff80001269b5a0 X30=ffff80001076c970 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=0000000000000000:3fd8997b67db632e Z01=0000000000000000:3fd0000000000000 Z02=0000000000000000:3ff3333333333333 Z03=0000000000000000:416312d000000000 Z04=0000000000000000:3ff0c42db7f0753b Z05=0000000000000000:3fe255283cadb743 Z06=0000000000000000:3fd3333333333333 Z07=0000000000000000:3feaaaaaaaaaaaab Z08=0000000000000000:3fc7ec8fd684b024 Z09=0000000000000000:3fe5dfcdab3191d1 Z10=0000000000000000:3fe0000000000000 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=0000000000000005:000000006065ab81 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff800011119a8c X00=0000000000000005 X01=0000000000000007 X02=ffff800011119a70 X03=0000000010000000 X04=001a862940000000 X05=00ffffffffffffff X06=000000024f055213 X07=7fffffffffffffff X08=00000024875f6a80 X09=ffff00007fbd8600 X10=0000000000000000 X11=0000000000000006 X12=000000000000018b X13=ffff800012207000 X14=000000000000452d X15=00004c4b40000000 X16=ffff80001000c000 X17=ffff80006d9ea000 X18=00000000fffffffd X19=ffff00007fbdbc00 X20=00088f4b00000000 X21=0000000000000000 X22=00000024876298d0 X23=0000000000000003 X24=7fffffffffffffff X25=ffff00007fbd2ecc X26=ffff00007fbd2ff8 X27=ffff00007fbd2fb8 X28=ffff00007fbd2f78 X29=ffff80001000be80 X30=def280001013ba84 SP=ffff80001000be80 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=0000000000000000:3f8412f357662d86 Z01=0000000000000000:3f847ae147ae147b Z02=0000000000000000:41cd362843819a41 Z03=0000000000000000:416312d000000000 Z04=0000000000000000:3ff0000000000000 Z05=0000000000000000:3fd3333333333333 Z06=0000000000000000:0000004000001010 Z07=0000000000000000:3ff0dc3e2b0f18b3 Z08=0000000000000000:3fc1415ae682228c Z09=0000000000000000:3fe2a14dd34252cf Z10=0000000000000000:3fe0000000000000 Z11=0000000000000000:892ff35426d363c8 Z12=0000000000000000:64e9aecf0da4f9a6 Z13=0000000000000000:f107df0fcb0aa7bb Z14=0000000000000000:5468f4fd38a633c2 Z15=0000000000000000:20cdfcd1e592daa8 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=0000000000000000:00000000d403449d Z31=0000000000000000:0000000000000000