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BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x384/0x760 fs/xfs/xfs_inode_item.c:801
Read of size 8 at addr ffff0000f95c4550 by task xfsaild/loop9/9186

CPU: 0 UID: 0 PID: 9186 Comm: xfsaild/loop9 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0xb0/0x110 mm/kasan/report.c:595
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 xfs_inode_item_push+0x384/0x760 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+0xb34/0x2858 fs/xfs/xfs_trans_ail.c:700
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844

Allocated by task 7801:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:570
 unpoison_slab_object mm/kasan/common.c:340 [inline]
 __kasan_slab_alloc+0x70/0x88 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+0x344/0x680 mm/slub.c:5270
 xfs_inode_item_init+0x3c/0xc0 fs/xfs/xfs_inode_item.c:929
 xfs_trans_ijoin+0xe0/0x12c fs/xfs/libxfs/xfs_trans_inode.c:36
 xfs_trans_alloc_dir+0x168/0x5c0 fs/xfs/xfs_trans.c:1378
 xfs_remove+0x38c/0x7f8 fs/xfs/xfs_inode.c:1952
 xfs_vn_unlink+0xe0/0x1d8 fs/xfs/xfs_iops.c:413
 vfs_unlink+0x304/0x544 fs/namei.c:5369
 do_unlinkat+0x26c/0x48c fs/namei.c:5439
 __do_sys_unlinkat fs/namei.c:5469 [inline]
 __se_sys_unlinkat fs/namei.c:5462 [inline]
 __arm64_sys_unlinkat+0xdc/0xf8 fs/namei.c:5462
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Freed by task 8090:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x74/0xa4 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+0x184/0x6e4 mm/slub.c:6781
 xfs_inode_item_destroy+0x70/0x84 fs/xfs/xfs_inode_item.c:951
 xfs_inode_free_callback+0x14c/0x1bc fs/xfs/xfs_icache.c:161
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0x848/0x1774 kernel/rcu/tree.c:2857
 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2874
 handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
 __do_softirq+0x14/0x20 kernel/softirq.c:656

The buggy address belongs to the object at ffff0000f95c4520
 which belongs to the cache xfs_ili of size 264
The buggy address is located 48 bytes inside of
 freed 264-byte region [ffff0000f95c4520, ffff0000f95c4628)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1395c4
anon flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000000 ffff0000c52e18c0 0000000000000000 0000000000000001
raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000f95c4400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000f95c4480: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff0000f95c4500: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff0000f95c4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000f95c4600: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb
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