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BUG: KASAN: slab-out-of-bounds in btf_name_valid_section kernel/bpf/btf.c:824 [inline]
BUG: KASAN: slab-out-of-bounds in btf_datasec_check_meta+0x2c9/0x9a0 kernel/bpf/btf.c:4693
Read of size 1 at addr ffff88801f702227 by task syz.0.481/7018
CPU: 1 UID: 0 PID: 7018 Comm: syz.0.481 Not tainted 6.11.0-rc4-syzkaller-00326-g5277d130947b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:824 [inline]
btf_datasec_check_meta+0x2c9/0x9a0 kernel/bpf/btf.c:4693
btf_check_meta kernel/bpf/btf.c:5175 [inline]
btf_check_all_metas kernel/bpf/btf.c:5199 [inline]
btf_parse_type_sec+0x4d5/0x2620 kernel/bpf/btf.c:5335
btf_parse kernel/bpf/btf.c:5763 [inline]
btf_new_fd+0x43f/0xd30 kernel/bpf/btf.c:7683
__sys_bpf+0x6ef/0x810 kernel/bpf/syscall.c:5762
__do_sys_bpf kernel/bpf/syscall.c:5824 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5822 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5822
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: 0033:0x7f542ab7def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f542ba12038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f542ad35f80 RCX: 00007f542ab7def9
RDX: 0000000000000028 RSI: 00000000200000c0 RDI: 0000000000000012
RBP: 00007f542abf0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f542ad35f80 R15: 00007ffeddcc9558
</TASK>
Allocated by task 7018:
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:4158 [inline]
__kmalloc_node_noprof+0x22a/0x440 mm/slub.c:4164
__kvmalloc_node_noprof+0x72/0x190 mm/util.c:650
btf_parse kernel/bpf/btf.c:5739 [inline]
btf_new_fd+0x265/0xd30 kernel/bpf/btf.c:7683
__sys_bpf+0x6ef/0x810 kernel/bpf/syscall.c:5762
__do_sys_bpf kernel/bpf/syscall.c:5824 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5822 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5822
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 ffff88801f702200
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes to the right of
allocated 39-byte region [ffff88801f702200, ffff88801f702227)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f702
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000000 ffff88801ac418c0 ffffea00007cef80 dead000000000006
raw: 0000000000000000 0000000080200020 00000001fdffffff 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 6291717729, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695
__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:2321
allocate_slab+0x5a/0x2f0 mm/slub.c:2484
new_slab mm/slub.c:2537 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
__slab_alloc+0x58/0xa0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_noprof+0x25a/0x400 mm/slub.c:4170
kmalloc_noprof include/linux/slab.h:685 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
apply_wqattrs_prepare+0xfd/0xef0 kernel/workqueue.c:5231
apply_workqueue_attrs_locked+0x63/0x200 kernel/workqueue.c:5321
alloc_and_link_pwqs kernel/workqueue.c:5478 [inline]
alloc_workqueue+0x13ce/0x1fe0 kernel/workqueue.c:5697
init_cifs+0x276/0x630 fs/smb/client/cifsfs.c:1865
do_one_initcall+0x248/0x880 init/main.c:1267
do_initcall_level+0x157/0x210 init/main.c:1329
do_initcalls+0x3f/0x80 init/main.c:1345
kernel_init_freeable+0x435/0x5d0 init/main.c:1578
page_owner free stack trace missing
Memory state around the buggy address:
ffff88801f702100: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
ffff88801f702180: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
>ffff88801f702200: 00 00 00 00 07 fc fc fc fc fc fc fc fc fc fc fc
^
ffff88801f702280: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
ffff88801f702300: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
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