syzkaller login: [ 283.481592][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 283.518018][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 283.563083][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 294.258064][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:14545' (ECDSA) to the list of known hosts. 1970/01/01 00:06:05 fuzzer started 1970/01/01 00:06:19 dialing manager at localhost:41559 [ 385.410688][ T2027] cgroup: Unknown subsys name 'net' [ 386.524403][ T2027] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:06:26 syscalls: 2918 1970/01/01 00:06:26 code coverage: enabled 1970/01/01 00:06:26 comparison tracing: enabled 1970/01/01 00:06:26 extra coverage: enabled 1970/01/01 00:06:26 delay kcov mmap: mmap returned an invalid pointer 1970/01/01 00:06:26 setuid sandbox: enabled 1970/01/01 00:06:26 namespace sandbox: enabled 1970/01/01 00:06:26 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:06:26 fault injection: enabled 1970/01/01 00:06:26 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:06:26 net packet injection: enabled 1970/01/01 00:06:26 net device setup: enabled 1970/01/01 00:06:26 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:06:26 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:06:26 NIC VF setup: PCI device 0000:00:11.0 is not available 1970/01/01 00:06:26 USB emulation: enabled 1970/01/01 00:06:26 hci packet injection: /dev/vhci does not exist 1970/01/01 00:06:26 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:06:26 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 1970/01/01 00:06:26 fetching corpus: 0, signal 0/2000 (executing program) 1970/01/01 00:06:32 fetching corpus: 50, signal 32271/35746 (executing program) 1970/01/01 00:06:34 fetching corpus: 98, signal 41685/46670 (executing program) 1970/01/01 00:06:38 fetching corpus: 148, signal 50125/56562 (executing program) 1970/01/01 00:06:41 fetching corpus: 198, signal 59359/67076 (executing program) 1970/01/01 00:06:45 fetching corpus: 247, signal 67455/76305 (executing program) 1970/01/01 00:06:47 fetching corpus: 296, signal 70476/80612 (executing program) 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signal 247478/255101 (executing program) 1970/01/01 00:15:23 fetching corpus: 11556, signal 247738/255129 (executing program) 1970/01/01 00:15:24 fetching corpus: 11606, signal 247952/255134 (executing program) 1970/01/01 00:15:27 fetching corpus: 11656, signal 248216/255134 (executing program) 1970/01/01 00:15:30 fetching corpus: 11705, signal 248530/255138 (executing program) 1970/01/01 00:15:33 fetching corpus: 11755, signal 248789/255144 (executing program) 1970/01/01 00:15:35 fetching corpus: 11804, signal 249111/255146 (executing program) 1970/01/01 00:15:37 fetching corpus: 11854, signal 249336/255147 (executing program) 1970/01/01 00:15:39 fetching corpus: 11904, signal 249664/255168 (executing program) 1970/01/01 00:15:41 fetching corpus: 11954, signal 250136/255292 (executing program) 1970/01/01 00:15:42 fetching corpus: 12004, signal 250396/255292 (executing program) 1970/01/01 00:15:44 fetching corpus: 12054, signal 250728/255292 (executing program) 1970/01/01 00:15:46 fetching corpus: 12103, signal 251093/255300 (executing program) 1970/01/01 00:15:48 fetching corpus: 12153, signal 251379/255311 (executing program) 1970/01/01 00:15:50 fetching corpus: 12203, signal 251655/255311 (executing program) 1970/01/01 00:15:53 fetching corpus: 12253, signal 251969/255317 (executing program) 1970/01/01 00:15:55 fetching corpus: 12303, signal 252342/255328 (executing program) 1970/01/01 00:15:57 fetching corpus: 12353, signal 252639/255328 (executing program) 1970/01/01 00:15:58 fetching corpus: 12380, signal 252792/255328 (executing program) 1970/01/01 00:15:58 fetching corpus: 12380, signal 252792/255328 (executing program) 1970/01/01 00:17:48 starting 2 fuzzer processes 00:17:48 executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_inet6_tcp_SIOCATMARK(r0, 0x8905, &(0x7f00000004c0)) 00:17:48 executing program 1: bpf$ENABLE_STATS(0x20, &(0x7f0000000080)={0x2}, 0xd0) [ 1090.782144][ T2040] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1090.895582][ T2040] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1093.435298][ T2041] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1093.575328][ T2041] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1096.570179][ C0] ================================================================== [ 1096.573559][ C0] BUG: KASAN: use-after-free in riscv_intc_irq+0x24/0xc8 [ 1096.574990][ C0] Read of size 8 at addr ffffaf801113fe30 by task syz-executor.0/2040 [ 1096.576341][ C0] [ 1096.578320][ C0] CPU: 0 PID: 2040 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1096.580729][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1096.581975][ C0] Call Trace: [ 1096.582933][ C0] [] dump_backtrace+0x2e/0x3c [ 1096.584286][ C0] [] show_stack+0x34/0x40 [ 1096.585481][ C0] [] dump_stack_lvl+0xe4/0x150 [ 1096.586773][ C0] [] print_address_description.constprop.0+0x2a/0x330 [ 1096.588258][ C0] [] kasan_report+0x184/0x1e0 [ 1096.590387][ C0] [] __asan_load8+0x6e/0x96 [ 1096.591692][ C0] [] riscv_intc_irq+0x24/0xc8 [ 1096.592994][ C0] [] generic_handle_arch_irq+0x36/0x54 [ 1096.594383][ C0] [] ret_from_exception+0x0/0x10 [ 1096.595628][ C0] [] lock_acquire.part.0+0x210/0x424 [ 1096.597090][ C0] [ 1096.597823][ C0] The buggy address belongs to the page: [ 1096.599621][ C0] page:ffffaf807ab169b8 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9133f [ 1096.601296][ C0] flags: 0x9000000000(section=18|node=0|zone=0) [ 1096.604134][ C0] raw: 0000009000000000 0000000000000000 ffffaf807ab169c0 0000000000000000 [ 1096.605482][ C0] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 1096.606679][ C0] raw: 00000000000007ff [ 1096.607557][ C0] page dumped because: kasan: bad access detected [ 1096.609014][ C0] page_owner tracks the page as freed [ 1096.610547][ C0] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1996, ts 303755740700, free_ts 1083142533800 [ 1096.613053][ C0] __set_page_owner+0x48/0x136 [ 1096.614191][ C0] post_alloc_hook+0xd0/0x10a [ 1096.615255][ C0] get_page_from_freelist+0x8da/0x12d8 [ 1096.616435][ C0] __alloc_pages+0x150/0x3b6 [ 1096.617459][ C0] alloc_pages+0x132/0x2a6 [ 1096.619728][ C0] alloc_slab_page.constprop.0+0xc2/0xfa [ 1096.621035][ C0] new_slab+0x76/0x2cc [ 1096.622047][ C0] ___slab_alloc+0x56e/0x918 [ 1096.623108][ C0] __slab_alloc.constprop.0+0x50/0x8c [ 1096.624307][ C0] __kmalloc_node_track_caller+0x26c/0x362 [ 1096.625530][ C0] __alloc_skb+0xee/0x2e4 [ 1096.626609][ C0] __napi_alloc_skb+0x72/0x214 [ 1096.627743][ C0] page_to_skb+0x16e/0x70e [ 1096.629146][ C0] receive_buf+0xa20/0x3e50 [ 1096.630330][ C0] virtnet_poll+0x39c/0x986 [ 1096.631433][ C0] __napi_poll+0x7c/0x358 [ 1096.632687][ C0] page last free stack trace: [ 1096.633518][ C0] __reset_page_owner+0x4a/0xea [ 1096.634597][ C0] free_pcp_prepare+0x29c/0x45e [ 1096.635702][ C0] free_unref_page+0x6a/0x31e [ 1096.636767][ C0] __free_pages+0xe2/0x112 [ 1096.637821][ C0] __free_slab+0x122/0x27c [ 1096.639418][ C0] discard_slab+0x4c/0x7a [ 1096.640622][ C0] __slab_free+0x20a/0x29c [ 1096.641684][ C0] ___cache_free+0x17c/0x354 [ 1096.642767][ C0] qlist_free_all+0x7c/0x132 [ 1096.643807][ C0] kasan_quarantine_reduce+0x14c/0x1c8 [ 1096.644934][ C0] __kasan_slab_alloc+0x5c/0x98 [ 1096.646087][ C0] kmem_cache_alloc+0x338/0x3de [ 1096.647138][ C0] __anon_vma_prepare+0x58/0x29c [ 1096.648406][ C0] __handle_mm_fault+0x1fc2/0x23a4 [ 1096.649929][ C0] handle_mm_fault+0x296/0x674 [ 1096.651033][ C0] do_page_fault+0x308/0xa3c [ 1096.652423][ C0] [ 1096.653137][ C0] Memory state around the buggy address: [ 1096.654502][ C0] ffffaf801113fd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 1096.655778][ C0] ffffaf801113fd80: 00 00 00 00 00 00 00 00 ff ff ff ff ff ff ff ff [ 1096.656949][ C0] >ffffaf801113fe00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 1096.658042][ C0] ^ [ 1096.659882][ C0] ffffaf801113fe80: f1 f1 f1 f1 f1 f1 00 00 00 00 00 f3 f3 f3 f3 f3 [ 1096.661942][ C0] ffffaf801113ff00: 00 00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff [ 1096.663203][ C0] ================================================================== [ 1096.664421][ C0] Disabling lock debugging due to kernel taint [ 1096.668191][ T2040] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 1096.669785][ T2040] CPU: 0 PID: 2040 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1096.671799][ T2040] Hardware name: riscv-virtio,qemu (DT) [ 1096.672528][ T2040] Call Trace: [ 1096.673124][ T2040] [] dump_backtrace+0x2e/0x3c [ 1096.674224][ T2040] [] show_stack+0x34/0x40 [ 1096.675170][ T2040] [] dump_stack_lvl+0xe4/0x150 [ 1096.676767][ T2040] [] dump_stack+0x1c/0x24 [ 1096.677892][ T2040] [] panic+0x24a/0x634 [ 1096.679434][ T2040] [] schedule+0x0/0x14c [ 1096.680578][ T2040] [] preempt_schedule_common+0x4e/0xde [ 1096.681702][ T2040] [] preempt_schedule+0x34/0x36 [ 1096.682795][ T2040] [] __kernfs_new_node+0x5e8/0x5f2 [ 1096.683886][ T2040] [] kernfs_new_node+0x66/0xbe [ 1096.684800][ T2040] [] __kernfs_create_file+0x4e/0x1e8 [ 1096.685767][ T2040] [] sysfs_add_file_mode_ns+0x138/0x254 [ 1096.686722][ T2040] [] internal_create_group+0x274/0x722 [ 1096.687700][ T2040] [] internal_create_groups.part.0+0x64/0xe8 [ 1096.689336][ T2040] [] sysfs_create_groups+0x2c/0x48 [ 1096.690455][ T2040] [] device_add+0xee4/0x129e [ 1096.691516][ T2040] [] netdev_register_kobject+0xcc/0x208 [ 1096.692738][ T2040] [] register_netdevice+0x8ee/0xc6a [ 1096.693939][ T2040] [] veth_newlink+0x454/0x7dc [ 1096.695073][ T2040] [] __rtnl_newlink+0xc16/0xfa0 [ 1096.696132][ T2040] [] rtnl_newlink+0x60/0x8c [ 1096.697094][ T2040] [] rtnetlink_rcv_msg+0x338/0x9a0 [ 1096.698095][ T2040] [] netlink_rcv_skb+0xf8/0x2be [ 1096.699733][ T2040] [] rtnetlink_rcv+0x26/0x30 [ 1096.700847][ T2040] [] netlink_unicast+0x40e/0x5fe [ 1096.701815][ T2040] [] netlink_sendmsg+0x4e0/0x994 [ 1096.702779][ T2040] [] sock_sendmsg+0xa0/0xc4 [ 1096.703832][ T2040] [] __sys_sendto+0x1f2/0x2e0 [ 1096.704811][ T2040] [] sys_sendto+0x3e/0x52 [ 1096.705750][ T2040] [] ret_from_syscall+0x0/0x2 [ 1096.707022][ T2040] SMP: stopping secondary CPUs [ 1096.709447][ T2040] Rebooting in 86400 seconds.. VM DIAGNOSIS: 09:57:31 Registers: info registers vcpu 0 pc ffffffff80475986 mhartid 0000000000000000 mstatus 00000000000000a2 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff8000f97e sepc 00007fffbef69264 mcause 0000000000000009 scause 0000000000000008 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff80119b52 x2/sp ffffaf800cb3f7e0 x3/gp ffffffff85863ac0 x4/tp ffffaf800b42c8c0 x5/t0 00000000000001f8 x6/t1 1e92703cab4e9700 x7/t2 ffffffffffffffff x8/s0 ffffaf800cb3f820 x9/s1 ffffaf800b9b8c98 x10/a0 ffffaf800b9b8c98 x11/a1 0000000000000003 x12/a2 1ffff5f001737193 x13/a3 ffffffff80119b52 x14/a4 0000000000000000 x15/a5 0000000000000001 x16/a6 0000000000f00000 x17/a7 ffffffff826e6226 x18/s2 0000000000000001 x19/s3 ffffaf800b42c8c0 x20/s4 ffffaf800b9b8ca8 x21/s5 ffffaf800b9b8ca0 x22/s6 ffffaf800cb3f960 x23/s7 ffffaf800cb3fb00 x24/s8 0000000000000000 x25/s9 0000000000004000 x26/s10 0000000000000040 x27/s11 0000000000000001 x28/t3 fffffffff3f3f300 x29/t4 ffffffff80112282 x30/t5 1ffff5f001967eb4 x31/t6 0000000000ecfcec f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 pc ffffffff80c2db8a mhartid 0000000000000001 mstatus 00000000000001a0 mip 00000000000000a0 mie 000000000000022a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff80475986 sepc ffffffff801165e0 mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff80c2db84 x2/sp ffffaf801113f610 x3/gp ffffffff85863ac0 x4/tp ffffaf800bd03080 x5/t0 ffffffff86bcb657 x6/t1 fffff5ef02227eec x7/t2 0000000000000000 x8/s0 ffffaf801113f700 x9/s1 ffffffff838d2e87 x10/a0 0000000000000000 x11/a1 ffffaf800bd03080 x12/a2 0000000000010506 x13/a3 ffffffff80c2db70 x14/a4 0000000000000003 x15/a5 0000000000000009 x16/a6 0000000000f00000 x17/a7 ffffaf801113f767 x18/s2 000000000000002a x19/s3 ffffaf801113f760 x20/s4 ffffaf801113f680 x21/s5 ffffffff838d2e86 x22/s6 ffffffff838d2e88 x23/s7 1ffff5f002227ec4 x24/s8 ffffffff85889780 x25/s9 fffffffffffffffa x26/s10 fffffffffffffffe x27/s11 ffffffff838d6d80 x28/t3 1ffff5f002227f54 x29/t4 fffff5ef02227eec x30/t5 fffff5ef02227eed x31/t6 ffffaf801113f927 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000