loop0: detected capacity change from 0 to 32768
XFS (loop0): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb
XFS (loop0): Internal error hlen <= 0 || hlen > bufsize at line 2975 of file fs/xfs/xfs_log_recover.c.  Caller xlog_valid_rec_header+0x23f/0x380 fs/xfs/xfs_log_recover.c:-1
CPU: 0 UID: 0 PID: 5335 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
 xfs_error_report fs/xfs/xfs_error.c:234 [inline]
 xfs_corruption_error+0x122/0x170 fs/xfs/xfs_error.c:251
 xlog_valid_rec_header+0x2ce/0x380 fs/xfs/xfs_log_recover.c:-1
 xlog_do_recovery_pass+0x331/0xcd0 fs/xfs/xfs_log_recover.c:3060
 xlog_verify_head+0x136/0x440 fs/xfs/xfs_log_recover.c:1058
 xlog_find_tail+0x5ca/0x840 fs/xfs/xfs_log_recover.c:1315
 xlog_recover+0x4b/0x3e0 fs/xfs/xfs_log_recover.c:3422
 xfs_log_mount+0x253/0x3e0 fs/xfs/xfs_log.c:667
 xfs_mountfs+0xe70/0x22e0 fs/xfs/xfs_mount.c:1031
 xfs_fs_fill_super+0x11f1/0x1640 fs/xfs/xfs_super.c:1960
 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1691
 vfs_get_tree+0x92/0x2a0 fs/super.c:1751
 fc_mount fs/namespace.c:1199 [inline]
 do_new_mount_fc fs/namespace.c:3636 [inline]
 do_new_mount+0x329/0xa50 fs/namespace.c:3712
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4201
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f351099bf4a
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:00007f351191ce58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f351191cee0 RCX: 00007f351099bf4a
RDX: 00002000000000c0 RSI: 0000200000000500 RDI: 00007f351191cea0
RBP: 00002000000000c0 R08: 00007f351191cee0 R09: 0000000005800802
R10: 0000000005800802 R11: 0000000000000246 R12: 0000200000000500
R13: 00007f351191cea0 R14: 00000000000098ae R15: 0000200000000580
 </TASK>
XFS (loop0): Corruption detected. Unmount and run xfs_repair
XFS (loop0): failed to locate log tail
XFS (loop0): log mount/recovery failed: error -117
XFS (loop0): log mount failed
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; going on - but anything won't be destroyed because it's read-only
hpfs: filesystem error: improperly stopped
hpfs: filesystem error: warning: spare dnodes used, try chkdsk
hpfs: Proceeding, but your filesystem could be corrupted if you delete files or directories
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:283
Read of size 1 at addr ffff88804ffa38a6 by task syz.0.0/5335

CPU: 0 UID: 0 PID: 5335 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 mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 strcmp+0x6b/0xc0 lib/string.c:283
 hpfs_get_ea+0x134/0xee0 fs/hpfs/ea.c:139
 hpfs_read_inode+0x1a6/0x1050 fs/hpfs/inode.c:63
 hpfs_fill_super+0x123d/0x1fa0 fs/hpfs/super.c:651
 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1691
 vfs_get_tree+0x92/0x2a0 fs/super.c:1751
 fc_mount fs/namespace.c:1199 [inline]
 do_new_mount_fc fs/namespace.c:3636 [inline]
 do_new_mount+0x329/0xa50 fs/namespace.c:3712
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4201
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f351099bf4a
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:00007f351191ce58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f351191cee0 RCX: 00007f351099bf4a
RDX: 000020000000a000 RSI: 0000200000009ec0 RDI: 00007f351191cea0
RBP: 000020000000a000 R08: 00007f351191cee0 R09: 0000000003200041
R10: 0000000003200041 R11: 0000000000000246 R12: 0000200000009ec0
R13: 00007f351191cea0 R14: 0000000000009e15 R15: 0000200000000640
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x7ff6abba2 pfn:0x4ffa3
flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff00000000000 ffffea00013fe888 ffffea00013fe908 0000000000000000
raw: 00000007ff6abba2 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 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO|__GFP_COMP), pid 5310, tgid 5310 (udevd), ts 74921108668, free_ts 74940605027
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x228/0x280 mm/page_alloc.c:1884
 prep_new_page mm/page_alloc.c:1892 [inline]
 get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3945
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5240
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2486
 folio_alloc_mpol_noprof mm/mempolicy.c:2505 [inline]
 vma_alloc_folio_noprof+0xea/0x210 mm/mempolicy.c:2540
 folio_prealloc+0x30/0x170 mm/memory.c:-1
 alloc_anon_folio mm/memory.c:5168 [inline]
 do_anonymous_page mm/memory.c:5225 [inline]
 do_pte_missing+0x14e8/0x3310 mm/memory.c:4402
 handle_pte_fault mm/memory.c:6276 [inline]
 __handle_mm_fault mm/memory.c:6414 [inline]
 handle_mm_fault+0x1b8c/0x32a0 mm/memory.c:6583
 do_user_addr_fault+0x75b/0x1360 arch/x86/mm/fault.c:1385
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
page last free pid 5310 tgid 5310 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1433 [inline]
 free_unref_folios+0xd9e/0x14d0 mm/page_alloc.c:3030
 folios_put_refs+0x58a/0x680 mm/swap.c:1002
 free_pages_and_swap_cache+0x537/0x5b0 mm/swap_state.c:358
 __tlb_batch_free_encoded_pages mm/mmu_gather.c:137 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:150 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:398 [inline]
 tlb_flush_mmu+0x3a8/0x680 mm/mmu_gather.c:405
 tlb_finish_mmu+0xf9/0x230 mm/mmu_gather.c:530
 vms_clear_ptes+0x44d/0x570 mm/vma.c:1278
 vms_complete_munmap_vmas+0x205/0x890 mm/vma.c:1320
 do_vmi_align_munmap+0x3b7/0x4b0 mm/vma.c:1579
 do_vmi_munmap+0x252/0x2d0 mm/vma.c:1627
 __vm_munmap+0x22c/0x3d0 mm/vma.c:3247
 __do_sys_munmap mm/mmap.c:1077 [inline]
 __se_sys_munmap mm/mmap.c:1074 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:1074
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88804ffa3780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88804ffa3800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88804ffa3880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                               ^
 ffff88804ffa3900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88804ffa3980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================