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BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x396/0x670 fs/xfs/xfs_inode_item.c:801
Read of size 8 at addr ffff88805d2df108 by task xfsaild/loop4/17254

CPU: 1 UID: 0 PID: 17254 Comm: xfsaild/loop4 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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
 xfs_inode_item_push+0x396/0x670 fs/xfs/xfs_inode_item.c:801
 xfsaild_push_item fs/xfs/xfs_trans_ail.c:390 [inline]
 xfsaild_push fs/xfs/xfs_trans_ail.c:518 [inline]
 xfsaild+0xf55/0x28e0 fs/xfs/xfs_trans_ail.c:700
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>

Allocated by task 17246:
 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:4953 [inline]
 slab_alloc_node mm/slub.c:5263 [inline]
 kmem_cache_alloc_noprof+0x188/0x6a0 mm/slub.c:5270
 xfs_inode_item_init+0x33/0xd0 fs/xfs/xfs_inode_item.c:929
 xfs_trans_ijoin+0xe5/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
 xfs_vn_update_time+0x37b/0x570 fs/xfs/xfs_iops.c:1224
 inode_update_time fs/inode.c:2170 [inline]
 touch_atime+0x2f9/0x6d0 fs/inode.c:2243
 file_accessed include/linux/fs.h:2254 [inline]
 filemap_read+0x105c/0x1240 mm/filemap.c:2872
 xfs_file_buffered_read+0x18e/0x330 fs/xfs/xfs_file.c:287
 xfs_file_read_iter+0x282/0x510 fs/xfs/xfs_file.c:312
 __kernel_read+0x50d/0x9c0 fs/read_write.c:530
 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
 ima_calc_file_hash+0x12cf/0x1800 security/integrity/ima/ima_crypto.c:568
 ima_collect_measurement+0x491/0x930 security/integrity/ima/ima_api.c:293
 process_measurement+0x12ec/0x1cc0 security/integrity/ima/ima_main.c:406
 ima_file_check+0xdf/0x130 security/integrity/ima/ima_main.c:663
 security_file_post_open+0xb3/0x260 security/security.c:2652
 do_open fs/namei.c:4639 [inline]
 path_openat+0x350e/0x3e70 fs/namei.c:4796
 do_filp_open+0x22d/0x490 fs/namei.c:4823
 do_sys_openat2+0x12f/0x220 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1447
 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

Freed by task 28:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 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:2540 [inline]
 slab_free mm/slub.c:6670 [inline]
 kmem_cache_free+0x18d/0x8c0 mm/slub.c:6781
 xfs_inode_free_callback+0x14f/0x1c0 fs/xfs/xfs_icache.c:161
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core kernel/rcu/tree.c:2857 [inline]
 rcu_cpu_kthread+0xbba/0x1b10 kernel/rcu/tree.c:2945
 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246

The buggy address belongs to the object at ffff88805d2df0d8
 which belongs to the cache xfs_ili of size 328
The buggy address is located 48 bytes inside of
 freed 328-byte region [ffff88805d2df0d8, ffff88805d2df220)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805d2dedc8 pfn:0x5d2de
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x80000000000040(head|node=0|zone=1)
page_type: f5(slab)
raw: 0080000000000040 ffff8881426b6000 dead000000000122 0000000000000000
raw: ffff88805d2dedc8 0000000080140010 00000000f5000000 0000000000000000
head: 0080000000000040 ffff8881426b6000 dead000000000122 0000000000000000
head: ffff88805d2dedc8 0000000080140010 00000000f5000000 0000000000000000
head: 0080000000000001 ffffea000174b781 00000000ffffffff 00000000ffffffff
head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Reclaimable, gfp_mask 0xd2050(__GFP_RECLAIMABLE|__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 6082, tgid 6081 (syz.0.26), ts 125986488468, free_ts 122921603811
 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+0x28bb/0x2950 mm/page_alloc.c:3945
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5240
 alloc_pages_mpol+0xd1/0x380 mm/mempolicy.c:2486
 alloc_slab_page mm/slub.c:3075 [inline]
 allocate_slab+0x86/0x3a0 mm/slub.c:3248
 new_slab mm/slub.c:3302 [inline]
 ___slab_alloc+0xaf8/0x13d0 mm/slub.c:4656
 __slab_alloc+0xc5/0x1f0 mm/slub.c:4779
 __slab_alloc_node mm/slub.c:4855 [inline]
 slab_alloc_node mm/slub.c:5251 [inline]
 kmem_cache_alloc_noprof+0x100/0x6a0 mm/slub.c:5270
 xfs_inode_item_init+0x33/0xd0 fs/xfs/xfs_inode_item.c:929
 xfs_trans_ijoin+0xe5/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36
 xfs_vn_update_time+0x37b/0x570 fs/xfs/xfs_iops.c:1224
 inode_update_time fs/inode.c:2170 [inline]
 touch_atime+0x2f9/0x6d0 fs/inode.c:2243
 file_accessed include/linux/fs.h:2254 [inline]
 filemap_read+0x105c/0x1240 mm/filemap.c:2872
 xfs_file_buffered_read+0x18e/0x330 fs/xfs/xfs_file.c:287
 xfs_file_read_iter+0x282/0x510 fs/xfs/xfs_file.c:312
 __kernel_read+0x50d/0x9c0 fs/read_write.c:530
page last free pid 5869 tgid 5869 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1433 [inline]
 __free_frozen_pages+0xfc1/0x1130 mm/page_alloc.c:2973
 discard_slab mm/slub.c:3346 [inline]
 __put_partials+0x149/0x170 mm/slub.c:3886
 __slab_free+0x2af/0x330 mm/slub.c:5952
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4953 [inline]
 slab_alloc_node mm/slub.c:5263 [inline]
 kmem_cache_alloc_noprof+0x188/0x6a0 mm/slub.c:5270
 anon_vma_chain_alloc mm/rmap.c:141 [inline]
 __anon_vma_prepare+0xcb/0x4a0 mm/rmap.c:194
 __vmf_anon_prepare mm/memory.c:3673 [inline]
 vmf_anon_prepare mm/internal.h:432 [inline]
 do_anonymous_page mm/memory.c:5218 [inline]
 do_pte_missing+0x21bc/0x27a0 mm/memory.c:4399
 handle_pte_fault mm/memory.c:6273 [inline]
 __handle_mm_fault mm/memory.c:6411 [inline]
 handle_mm_fault+0xd0a/0x13c0 mm/memory.c:6580
 do_user_addr_fault+0x75b/0x1360 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618

Memory state around the buggy address:
 ffff88805d2df000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805d2df080: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb
>ffff88805d2df100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88805d2df180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805d2df200: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb
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