loop0: detected capacity change from 0 to 32768
=======================================================
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.
=======================================================
XFS (loop0): Mounting V5 Filesystem bfdc47fc-10d8-4eed-a562-11a831b3f791
XFS (loop0): Ending clean mount
XFS (loop0): Quotacheck needed: Please wait.
XFS (loop0): Quotacheck: Done.
loop0: detected capacity change from 32768 to 0
XFS (loop0): metadata I/O error in "xfs_btree_read_buf_block+0x2ae/0x4a0" at daddr 0x18 len 4 error 5
XFS (loop0): metadata I/O error in "xfs_btree_read_buf_block+0x2ae/0x4a0" at daddr 0x18 len 4 error 5
XFS (loop0): metadata I/O error in "xfs_btree_read_buf_block+0x2ae/0x4a0" at daddr 0x18 len 4 error 5
==================================================================
BUG: KASAN: slab-use-after-free in xfs_defer_item_unpause+0x116/0x250 fs/xfs/libxfs/xfs_defer.c:1256
Read of size 4 at addr ffff88801fcdf27c by task syz.0.0/5321

CPU: 0 UID: 0 PID: 5321 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
 xfs_defer_item_unpause+0x116/0x250 fs/xfs/libxfs/xfs_defer.c:1256
 xrep_newbt_free+0x3fe/0x5f0 fs/xfs/scrub/newbt.c:520
 xrep_bmap_build_new_fork+0x5a9/0x740 fs/xfs/scrub/bmap_repair.c:820
 xrep_bmap+0x3ad/0x4a0 fs/xfs/scrub/bmap_repair.c:961
 xrep_attempt+0x184/0x7c0 fs/xfs/scrub/repair.c:78
 xfs_scrub_metadata+0xce4/0x1910 fs/xfs/scrub/scrub.c:747
 xfs_ioc_scrubv_metadata+0x7ac/0xb70 fs/xfs/scrub/scrub.c:980
 xfs_file_ioctl+0x916/0x1590 fs/xfs/xfs_ioctl.c:1308
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccaad9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fccabcb3fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fccab025fa0 RCX: 00007fccaad9e159
RDX: 0000200000000000 RSI: 00000000c0285840 RDI: 0000000000000006
RBP: 00007fccaae3506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fccab026038 R14: 00007fccab025fa0 R15: 00007ffd0115d7d8
 </TASK>

Allocated by task 5321:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 unpoison_slab_object mm/kasan/common.c:340 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4683 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 kmem_cache_alloc_noprof+0x2b9/0x600 mm/slub.c:5010
 xfs_defer_alloc fs/xfs/libxfs/xfs_defer.c:843 [inline]
 xfs_defer_add+0x143/0x480 fs/xfs/libxfs/xfs_defer.c:871
 xfs_extent_free_defer_add+0x1bf/0x3b0 fs/xfs/xfs_extfree_item.c:507
 xfs_defer_extent_free+0x2a8/0x400 fs/xfs/libxfs/xfs_alloc.c:2682
 xfs_alloc_schedule_autoreap+0xb0/0x170 fs/xfs/libxfs/xfs_alloc.c:2727
 xrep_newbt_add_blocks+0x239/0x410 fs/xfs/scrub/newbt.c:209
 xrep_newbt_alloc_file_blocks+0x657/0xa70 fs/xfs/scrub/newbt.c:386
 xrep_bmap_btree_load+0x177/0x3a0 fs/xfs/scrub/bmap_repair.c:717
 xrep_bmap_build_new_fork+0x4b7/0x740 fs/xfs/scrub/bmap_repair.c:790
 xrep_bmap+0x3ad/0x4a0 fs/xfs/scrub/bmap_repair.c:961
 xrep_attempt+0x184/0x7c0 fs/xfs/scrub/repair.c:78
 xfs_scrub_metadata+0xce4/0x1910 fs/xfs/scrub/scrub.c:747
 xfs_ioc_scrubv_metadata+0x7ac/0xb70 fs/xfs/scrub/scrub.c:980
 xfs_file_ioctl+0x916/0x1590 fs/xfs/xfs_ioctl.c:1308
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5321:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2748 [inline]
 slab_free mm/slub.c:6508 [inline]
 kmem_cache_free+0x182/0x650 mm/slub.c:6635
 xfs_defer_cancel_list fs/xfs/libxfs/xfs_defer.c:505 [inline]
 xfs_defer_finish_noroll+0xf8b/0x14e0 fs/xfs/libxfs/xfs_defer.c:737
 xfs_defer_finish+0x1c/0x180 fs/xfs/libxfs/xfs_defer.c:755
 xrep_defer_finish+0x16e/0x240 fs/xfs/scrub/repair.c:242
 xfs_btree_bload_prep_block+0x36e/0x6e0 fs/xfs/libxfs/xfs_btree_staging.c:321
 xfs_btree_bload+0x29e/0xf60 fs/xfs/libxfs/xfs_btree_staging.c:718
 xrep_bmap_btree_load+0x1c5/0x3a0 fs/xfs/scrub/bmap_repair.c:724
 xrep_bmap_build_new_fork+0x4b7/0x740 fs/xfs/scrub/bmap_repair.c:790
 xrep_bmap+0x3ad/0x4a0 fs/xfs/scrub/bmap_repair.c:961
 xrep_attempt+0x184/0x7c0 fs/xfs/scrub/repair.c:78
 xfs_scrub_metadata+0xce4/0x1910 fs/xfs/scrub/scrub.c:747
 xfs_ioc_scrubv_metadata+0x7ac/0xb70 fs/xfs/scrub/scrub.c:980
 xfs_file_ioctl+0x916/0x1590 fs/xfs/xfs_ioctl.c:1308
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88801fcdf240
 which belongs to the cache xfs_defer_pending of size 64
The buggy address is located 60 bytes inside of
 freed 64-byte region [ffff88801fcdf240, ffff88801fcdf280)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88801fcdf6c0 pfn:0x1fcdf
flags: 0xfff00000000200(workingset|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000200 ffff888032489c80 ffff88801d364ac8 ffff88801d364ac8
raw: ffff88801fcdf6c0 00000002002a0012 00000000f5000000 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 0xd2c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 39, tgid 39 (kworker/u4:3), ts 94981513798
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab+0x7d/0x620 mm/slub.c:3462
 new_slab mm/slub.c:3513 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7417
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x2c8/0x6c0 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 kmem_cache_alloc_noprof+0x399/0x600 mm/slub.c:5010
 xfs_defer_alloc fs/xfs/libxfs/xfs_defer.c:843 [inline]
 xfs_defer_add+0x143/0x480 fs/xfs/libxfs/xfs_defer.c:871
 xfs_bmap_add_extent_hole_real+0xd61/0x1a40 fs/xfs/libxfs/xfs_bmap.c:2782
 xfs_bmapi_allocate+0x248c/0x2f20 fs/xfs/libxfs/xfs_bmap.c:3975
 xfs_bmapi_write+0x843/0x1330 fs/xfs/libxfs/xfs_bmap.c:4265
 xfs_dquot_disk_alloc+0x4af/0xae0 fs/xfs/xfs_dquot.c:381
 xfs_qm_dqread+0xfe/0x520 fs/xfs/xfs_dquot.c:720
 xfs_qm_dqget+0x18a/0x3d0 fs/xfs/xfs_dquot.c:923
 xfs_qm_quotacheck_dqadjust+0xdd/0x5a0 fs/xfs/xfs_qm.c:1260
 xfs_qm_dqusage_adjust+0x4ad/0x670 fs/xfs/xfs_qm.c:1389
page last free pid 78 tgid 78 ts 94762825221 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 free_unref_folios+0xdc2/0x14e0 mm/page_alloc.c:3022
 shrink_folio_list+0x4a2d/0x5250 mm/vmscan.c:1580
 evict_folios+0x3055/0x3fb0 mm/vmscan.c:4910
 try_to_shrink_lruvec+0xe3b/0x1340 mm/vmscan.c:5076
 shrink_one+0x233/0x730 mm/vmscan.c:5117
 shrink_many mm/vmscan.c:5180 [inline]
 lru_gen_shrink_node mm/vmscan.c:5258 [inline]
 shrink_node+0x35d0/0x3e30 mm/vmscan.c:6247
 kswapd_shrink_node mm/vmscan.c:7101 [inline]
 balance_pgdat mm/vmscan.c:7279 [inline]
 kswapd+0x185e/0x32c0 mm/vmscan.c:7555
 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:
 ffff88801fcdf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88801fcdf180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801fcdf200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
                                                                ^
 ffff88801fcdf280: fc fc fc fc fa fb fb fb fb fb fb fb fc fc fc fc
 ffff88801fcdf300: fa fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb
==================================================================