loop0: detected capacity change from 0 to 128
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
hpfs: filesystem error: invalid number of hotfixes: 2066844986, used: 2066844985; already mounted read-only
hpfs: filesystem error: improperly stopped
hpfs: filesystem error: warning: spare dnodes used, try chkdsk
hpfs: You really don't want any checks? You are crazy...
hpfs: hpfs_map_sector(): read error
hpfs: code page support is disabled
==================================================================
BUG: KASAN: use-after-free in strcmp+0x6b/0xc0 lib/string.c:265
Read of size 1 at addr ffff88800fdcc8a6 by task syz.0.0/5346

CPU: 0 UID: 0 PID: 5346 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 strcmp+0x6b/0xc0 lib/string.c:265
 hpfs_get_ea+0x137/0xeb0 fs/hpfs/ea.c:139
 hpfs_read_inode+0x1a9/0x1060 fs/hpfs/inode.c:63
 hpfs_fill_super+0x127b/0x1fb0 fs/hpfs/super.c:652
 get_tree_bdev_flags+0x436/0x500 fs/super.c:1821
 vfs_get_tree+0x92/0x2a0 fs/super.c:1881
 fc_mount fs/namespace.c:1282 [inline]
 do_new_mount_fc fs/namespace.c:3910 [inline]
 do_new_mount+0x325/0xb00 fs/namespace.c:3986
 do_mount fs/namespace.c:4350 [inline]
 __do_sys_mount fs/namespace.c:4563 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4540
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x16a/0x530 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbf3abaa77a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbf3baede18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbf3baedea0 RCX: 00007fbf3abaa77a
RDX: 0000200000000400 RSI: 0000200000000440 RDI: 00007fbf3baede60
RBP: 0000200000000400 R08: 00007fbf3baedea0 R09: 0000000003200041
R10: 0000000003200041 R11: 0000000000000246 R12: 0000200000000440
R13: 00007fbf3baede60 R14: 0000000000009e15 R15: 0000200000000480
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x11 pfn:0xfdcc
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00003f7348 ffffea00003f76c8 0000000000000000
raw: 0000000000000011 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x152c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 4996, tgid 4996 (S35iptables), ts 61584778555
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1860
 prep_new_page mm/page_alloc.c:1868 [inline]
 get_page_from_freelist+0x225d/0x22e0 mm/page_alloc.c:3950
 __alloc_frozen_pages_noprof+0x211/0x450 mm/page_alloc.c:5492
 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2513
 alloc_frozen_pages_noprof mm/mempolicy.c:2584 [inline]
 alloc_pages_noprof+0xb1/0x2b0 mm/mempolicy.c:2604
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2614
 filemap_alloc_folio_noprof+0x111/0x460 mm/filemap.c:1017
 ractl_alloc_folio mm/readahead.c:200 [inline]
 page_cache_ra_unbounded+0x390/0x9d0 mm/readahead.c:288
 do_page_cache_ra mm/readahead.c:348 [inline]
 page_cache_ra_order+0xb47/0xee0 mm/readahead.c:558
 filemap_readahead mm/filemap.c:2711 [inline]
 filemap_get_pages+0x86d/0x1ee0 mm/filemap.c:2757
 filemap_read+0x421/0x11e0 mm/filemap.c:2853
 ext4_file_read_iter+0x553/0xad0 fs/ext4/file.c:-1
 __kernel_read+0x4ca/0x960 fs/read_write.c:512
 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:222 [inline]
 ima_calc_file_hash+0x451/0x890 security/integrity/ima/ima_crypto.c:280
 ima_collect_measurement+0x51b/0xa00 security/integrity/ima/ima_api.c:300
page last free pid 81 tgid 81 ts 99054737381 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1402 [inline]
 free_unref_folios+0xdcc/0x15d0 mm/page_alloc.c:3018
 shrink_folio_list+0x276b/0x4d90 mm/vmscan.c:1619
 evict_folios+0x3326/0x4390 mm/vmscan.c:5097
 try_to_shrink_lruvec+0xf22/0x1630 mm/vmscan.c:5271
 shrink_one+0x312/0x10f0 mm/vmscan.c:5318
 shrink_many mm/vmscan.c:5381 [inline]
 lru_gen_shrink_node mm/vmscan.c:5459 [inline]
 shrink_node+0x631e/0x6c50 mm/vmscan.c:6465
 kswapd_shrink_node mm/vmscan.c:7258 [inline]
 balance_pgdat mm/vmscan.c:7429 [inline]
 kswapd+0x1ff4/0x3a20 mm/vmscan.c:7705
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff88800fdcc780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88800fdcc800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88800fdcc880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                               ^
 ffff88800fdcc900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88800fdcc980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================