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BUG: KASAN: slab-out-of-bounds in crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60
Read of size 1 at addr ffff888021f6b080 by task syz-executor243/5071

CPU: 1 PID: 5071 Comm: syz-executor243 Not tainted 6.7.0-rc7-syzkaller-00016-gf5837722ffec #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60
 udf_finalize_lvid+0xf2/0x1f0 fs/udf/super.c:1984
 udf_sync_fs+0xea/0x150 fs/udf/super.c:2340
 sync_filesystem+0x109/0x280 fs/sync.c:56
 generic_shutdown_super+0x7e/0x3d0 fs/super.c:669
 kill_block_super+0x3b/0x90 fs/super.c:1667
 deactivate_locked_super+0xbc/0x1a0 fs/super.c:484
 deactivate_super+0xde/0x100 fs/super.c:517
 cleanup_mnt+0x222/0x450 fs/namespace.c:1256
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x217/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f5e46fd9647
Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe42f91e68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000025117 RCX: 00007f5e46fd9647
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe42f91f20
RBP: 00007ffe42f91f20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffe42f92f90
R13: 00005555571216c0 R14: 431bde82d7b634db R15: 00007ffe42f92fb0
 </TASK>

Allocated by task 4513:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:763 [inline]
 slab_alloc_node mm/slab.c:3237 [inline]
 slab_alloc mm/slab.c:3246 [inline]
 __kmem_cache_alloc_lru mm/slab.c:3423 [inline]
 kmem_cache_alloc+0x159/0x360 mm/slab.c:3432
 kmem_cache_zalloc include/linux/slab.h:711 [inline]
 lsm_inode_alloc security/security.c:633 [inline]
 security_inode_alloc+0x38/0x180 security/security.c:1494
 inode_init_always+0xc2f/0xf50 fs/inode.c:232
 alloc_inode+0x7a/0x220 fs/inode.c:268
 iget_locked+0x1b3/0x700 fs/inode.c:1316
 kernfs_get_inode+0x48/0x450 fs/kernfs/inode.c:251
 kernfs_iop_lookup+0x1e9/0x330 fs/kernfs/dir.c:1193
 lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3455
 open_last_lookups fs/namei.c:3546 [inline]
 path_openat+0x922/0x2c50 fs/namei.c:3776
 do_filp_open+0x1de/0x430 fs/namei.c:3809
 do_sys_openat2+0x176/0x1e0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_openat fs/open.c:1468 [inline]
 __se_sys_openat fs/open.c:1463 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1463
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

The buggy address belongs to the object at ffff888021f6b000
 which belongs to the cache lsm_inode_cache of size 128
The buggy address is located 0 bytes to the right of
 allocated 128-byte region [ffff888021f6b000, ffff888021f6b080)

The buggy address belongs to the physical page:
page:ffffea000087dac0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21f6b
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0x15()
raw: 00fff00000000800 ffff888140051a00 ffffea0000958190 ffffea00009829d0
raw: 0000000000000000 ffff888021f6b000 0000000100000015 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 0x242040(__GFP_IO|__GFP_NOWARN|__GFP_COMP|__GFP_THISNODE), pid 4513, tgid 4513 (udevadm), ts 43633194969, free_ts 43531418633
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312
 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 kmem_getpages mm/slab.c:1356 [inline]
 cache_grow_begin+0x99/0x3a0 mm/slab.c:2550
 cache_alloc_refill+0x295/0x3b0 mm/slab.c:2923
 ____cache_alloc mm/slab.c:2999 [inline]
 ____cache_alloc mm/slab.c:2982 [inline]
 __do_cache_alloc mm/slab.c:3182 [inline]
 slab_alloc_node mm/slab.c:3230 [inline]
 slab_alloc mm/slab.c:3246 [inline]
 __kmem_cache_alloc_lru mm/slab.c:3423 [inline]
 kmem_cache_alloc+0x307/0x360 mm/slab.c:3432
 kmem_cache_zalloc include/linux/slab.h:711 [inline]
 lsm_inode_alloc security/security.c:633 [inline]
 security_inode_alloc+0x38/0x180 security/security.c:1494
 inode_init_always+0xc2f/0xf50 fs/inode.c:232
 alloc_inode+0x7a/0x220 fs/inode.c:268
 iget_locked+0x1b3/0x700 fs/inode.c:1316
 kernfs_get_inode+0x48/0x450 fs/kernfs/inode.c:251
 kernfs_iop_lookup+0x1e9/0x330 fs/kernfs/dir.c:1193
 lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3455
 open_last_lookups fs/namei.c:3546 [inline]
 path_openat+0x922/0x2c50 fs/namei.c:3776
 do_filp_open+0x1de/0x430 fs/namei.c:3809
 do_sys_openat2+0x176/0x1e0 fs/open.c:1437
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
 slab_destroy mm/slab.c:1608 [inline]
 slabs_destroy+0x85/0xc0 mm/slab.c:1628
 cache_flusharray mm/slab.c:3341 [inline]
 ___cache_free+0x2b7/0x420 mm/slab.c:3404
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x4c/0x1b0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:763 [inline]
 slab_alloc_node mm/slab.c:3237 [inline]
 __kmem_cache_alloc_node+0x163/0x460 mm/slab.c:3521
 kmalloc_trace+0x25/0x60 mm/slab_common.c:1098
 kmalloc include/linux/slab.h:600 [inline]
 inode_doinit_use_xattr+0x54/0x410 security/selinux/hooks.c:1354
 inode_doinit_with_dentry+0x10c2/0x12c0 security/selinux/hooks.c:1548
 selinux_d_instantiate+0x26/0x30 security/selinux/hooks.c:6278
 security_d_instantiate+0x54/0xe0 security/security.c:3799
 d_splice_alias+0x94/0xdf0 fs/dcache.c:3145
 kernfs_iop_lookup+0x283/0x330 fs/kernfs/dir.c:1208
 lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3455

Memory state around the buggy address:
 ffff888021f6af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888021f6b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888021f6b080: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
                   ^
 ffff888021f6b100: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
 ffff888021f6b180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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