================================================================== BUG: KASAN: slab-out-of-bounds in btf_name_valid_section kernel/bpf/btf.c:829 [inline] BUG: KASAN: slab-out-of-bounds in btf_datasec_check_meta+0x2c9/0x9a0 kernel/bpf/btf.c:4698 Read of size 1 at addr ffff88801d2af3c2 by task syz-executor348/5094 CPU: 0 PID: 5094 Comm: syz-executor348 Not tainted 6.10.0-syzkaller-04478-g51f1bb929647 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 btf_name_valid_section kernel/bpf/btf.c:829 [inline] btf_datasec_check_meta+0x2c9/0x9a0 kernel/bpf/btf.c:4698 btf_check_meta kernel/bpf/btf.c:5180 [inline] btf_check_all_metas kernel/bpf/btf.c:5204 [inline] btf_parse_type_sec+0x4d5/0x2620 kernel/bpf/btf.c:5340 btf_parse kernel/bpf/btf.c:5732 [inline] btf_new_fd+0x43f/0xd30 kernel/bpf/btf.c:7650 __sys_bpf+0x6ef/0x810 kernel/bpf/syscall.c:5755 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f30ab23baf9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc4e6b7398 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f30ab23baf9 RDX: 0000000000000020 RSI: 00000000200004c0 RDI: 0000000000000012 RBP: 00007f30ab2ae5f0 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 Allocated by task 5094: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4123 [inline] __kmalloc_node_noprof+0x22a/0x440 mm/slub.c:4130 kmalloc_node_noprof include/linux/slab.h:681 [inline] kvmalloc_node_noprof+0x72/0x190 mm/util.c:639 btf_parse kernel/bpf/btf.c:5708 [inline] btf_new_fd+0x265/0xd30 kernel/bpf/btf.c:7650 __sys_bpf+0x6ef/0x810 kernel/bpf/syscall.c:5755 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88801d2af380 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 0 bytes to the right of allocated 66-byte region [ffff88801d2af380, ffff88801d2af3c2) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d2af flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 00fff00000000000 ffff888015041280 ffffea00005ef300 dead000000000004 raw: 0000000000000000 0000000080200020 00000001ffffefff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 3569445600, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473 prep_new_page mm/page_alloc.c:1481 [inline] get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2265 allocate_slab+0x5a/0x2f0 mm/slub.c:2428 new_slab mm/slub.c:2481 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3667 __slab_alloc+0x58/0xa0 mm/slub.c:3757 __slab_alloc_node mm/slub.c:3810 [inline] slab_alloc_node mm/slub.c:3990 [inline] kmalloc_trace_noprof+0x1d5/0x2c0 mm/slub.c:4149 kmalloc_noprof include/linux/slab.h:660 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] acpi_evaluate_object+0x15c/0xaf0 drivers/acpi/acpica/nsxfeval.c:177 acpi_evaluate_integer+0x11b/0x300 drivers/acpi/utils.c:260 acpi_get_pxm drivers/acpi/numa/srat.c:552 [inline] acpi_get_node+0x106/0x280 drivers/acpi/numa/srat.c:564 pci_acpi_root_get_node arch/x86/pci/acpi.c:336 [inline] pci_acpi_scan_root+0xa7/0x620 arch/x86/pci/acpi.c:418 acpi_pci_root_add+0x1faf/0x30f0 drivers/acpi/pci_root.c:733 acpi_scan_attach_handler drivers/acpi/scan.c:2260 [inline] acpi_bus_attach+0x84e/0xce0 drivers/acpi/scan.c:2307 device_for_each_child+0xf5/0x170 drivers/base/core.c:4008 acpi_dev_for_each_child+0xd0/0x110 drivers/acpi/bus.c:1157 page_owner free stack trace missing Memory state around the buggy address: ffff88801d2af280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff88801d2af300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff88801d2af380: 00 00 00 00 00 00 00 00 02 fc fc fc fc fc fc fc ^ ffff88801d2af400: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ffff88801d2af480: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ==================================================================