=========================[  304.731664][ T8613] ==================================================================
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 ffff888048459d48 by task xfsaild/loop7/8613

CPU: 0 UID: 0 PID: 8613 Comm: xfsaild/loop7 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 8603:
 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_icreate+0xea/0x170 fs/xfs/xfs_inode.c:605
 xfs_create+0x648/0xae0 fs/xfs/xfs_inode.c:721
 xfs_generic_create+0x413/0xb30 fs/xfs/xfs_iops.c:216
 vfs_create+0x3b1/0x410 fs/namei.c:4141
 do_mknodat+0x3f5/0x630 fs/namei.c:5048
 __do_sys_mknod fs/namei.c:5085 [inline]
 __se_sys_mknod fs/namei.c:5083 [inline]
 __x64_sys_mknod+0x8c/0xa0 fs/namei.c:5083
 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 20:
 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 ffff888048459d18
 which belongs to the cache xfs_ili of size 328
The buggy address is located 48 bytes inside of
 freed 328-byte region [ffff888048459d18, ffff888048459e60)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880484596f8 pfn:0x48458
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 ffff888143eb78c0 dead000000000122 0000000000000000
raw: ffff8880484596f8 000000008014000c 00000000f5000000 0000000000000000
head: 0080000000000040 ffff888143eb78c0 dead000000000122 0000000000000000
head: ffff8880484596f8 000000008014000c 00000000f5000000 0000000000000000
head: 0080000000000001 ffffea0001211601 00000000ffffffff 00000000ffffffff
head: 00000007f7b0d19b 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 5944, tgid 5943 (syz.1.7), ts 87974244903, free_ts 72494202099
 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 5792 tgid 5792 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1433 [inline]
 free_unref_folios+0xc13/0x17f0 mm/page_alloc.c:3030
 folios_put_refs+0x56f/0x680 mm/swap.c:1002
 free_pages_and_swap_cache+0x2e7/0x5b0 mm/swap_state.c:355
 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:397 [inline]
 tlb_flush_mmu+0x3a6/0x680 mm/mmu_gather.c:404
 tlb_finish_mmu+0xc3/0x1d0 mm/mmu_gather.c:497
 vms_clear_ptes+0x44d/0x570 mm/vma.c:1276
 vms_complete_munmap_vmas+0x205/0x890 mm/vma.c:1318
 do_vmi_align_munmap+0x3bd/0x4d0 mm/vma.c:1577
 do_vmi_munmap+0x252/0x2d0 mm/vma.c:1625
 __vm_munmap+0x22c/0x3d0 mm/vma.c:3240
 __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:
 ffff888048459c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888048459c80: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
>ffff888048459d00: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff888048459d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888048459e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
==================================================================