UDF-fs: Scanning with blocksize 512 failed
UDF-fs: warning (device loop0): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: warning (device loop0): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 2048 failed
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
==================================================================
BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2095
Write of size 4 at addr ffff88807db51ff0 by task syz-executor163/3511

CPU: 1 PID: 3511 Comm: syz-executor163 Not tainted 6.1.45-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:395
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2095
 udf_add_entry+0x17b7/0x3350 fs/udf/namei.c:482
 udf_mkdir+0x1a8/0xaa0 fs/udf/namei.c:681
 vfs_mkdir+0x3b6/0x590 fs/namei.c:4036
 do_mkdirat+0x260/0x520 fs/namei.c:4061
 __do_sys_mkdirat fs/namei.c:4076 [inline]
 __se_sys_mkdirat fs/namei.c:4074 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4074
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa61cc4e939
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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:00007ffc112e5ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fa61cc4e939
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 00000000ffffff9c
RBP: 00007fa61ccc3610 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000018a0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc112e5c98 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 3225:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:955 [inline]
 __kmalloc+0xb2/0x230 mm/slab_common.c:968
 kmalloc include/linux/slab.h:558 [inline]
 tomoyo_realpath_from_path+0xcb/0x5d0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x22c/0x490 security/tomoyo/file.c:771
 security_file_open+0x5f/0xa0 security/security.c:1649
 do_dentry_open+0x308/0x10f0 fs/open.c:869
 do_open fs/namei.c:3557 [inline]
 path_openat+0x2644/0x2e60 fs/namei.c:3714
 do_filp_open+0x230/0x480 fs/namei.c:3741
 do_sys_openat2+0x13b/0x500 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88807db50000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 4080 bytes to the right of
 4096-byte region [ffff88807db50000, ffff88807db51000)

The buggy address belongs to the physical page:
page:ffffea0001f6d400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7db50
head:ffffea0001f6d400 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea00006bde00 dead000000000003 ffff888012442140
raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3225, tgid 3225 (dhcpcd-run-hook), ts 35513490693, free_ts 35479936442
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533
 prep_new_page mm/page_alloc.c:2540 [inline]
 get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559
 alloc_slab_page+0x6a/0x150 mm/slub.c:1794
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0x84/0x2d0 mm/slub.c:1992
 ___slab_alloc+0xa71/0x1080 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc+0xa1/0x230 mm/slab_common.c:968
 kmalloc include/linux/slab.h:558 [inline]
 tomoyo_realpath_from_path+0xcb/0x5d0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x22c/0x490 security/tomoyo/file.c:771
 security_file_open+0x5f/0xa0 security/security.c:1649
 do_dentry_open+0x308/0x10f0 fs/open.c:869
 do_open fs/namei.c:3557 [inline]
 path_openat+0x2644/0x2e60 fs/namei.c:3714
 do_filp_open+0x230/0x480 fs/namei.c:3741
 do_sys_openat2+0x13b/0x500 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1345
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1460 [inline]
 free_pcp_prepare mm/page_alloc.c:1510 [inline]
 free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388
 free_unref_page+0x98/0x570 mm/page_alloc.c:3484
 free_slab mm/slub.c:2031 [inline]
 discard_slab mm/slub.c:2037 [inline]
 __unfreeze_partials+0x1b7/0x210 mm/slub.c:2586
 put_cpu_partial+0x116/0x180 mm/slub.c:2662
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x50/0x370 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
 vm_area_alloc+0x20/0xe0 kernel/fork.c:458
 mmap_region+0xcbb/0x1fa0 mm/mmap.c:2730
 do_mmap+0x8c5/0xf60 mm/mmap.c:1412
 vm_mmap_pgoff+0x1ca/0x2d0 mm/util.c:520
 elf_map+0x1a6/0x300 fs/binfmt_elf.c:394
 load_elf_binary+0xf8b/0x2750 fs/binfmt_elf.c:1166
 search_binary_handler fs/exec.c:1733 [inline]
 exec_binprm fs/exec.c:1774 [inline]
 bprm_execve+0x8ff/0x1820 fs/exec.c:1843

Memory state around the buggy address:
 ffff88807db51e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807db51f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807db51f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff88807db52000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88807db52080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================