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BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x3c3/0x6d0 fs/xfs/xfs_inode_item.c:801
Read of size 8 at addr ffff88805f976ae8 by task xfsaild/loop2/6561

CPU: 0 UID: 0 PID: 6561 Comm: xfsaild/loop2 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 xfs_inode_item_push+0x3c3/0x6d0 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+0xd9e/0x2950 fs/xfs/xfs_trans_ail.c:700
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 6545:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 unpoison_slab_object mm/kasan/common.c:342 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:368
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4955 [inline]
 slab_alloc_node mm/slub.c:5265 [inline]
 kmem_cache_alloc_noprof+0x181/0x6b0 mm/slub.c:5272
 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_trans_alloc_ichange+0x200/0x6e0 fs/xfs/xfs_trans.c:1253
 xfs_ioctl_setattr_get_trans fs/xfs/xfs_ioctl.c:621 [inline]
 xfs_fileattr_set+0x4fb/0x21c0 fs/xfs/xfs_ioctl.c:765
 vfs_fileattr_set+0x932/0xb90 fs/file_attr.c:298
 ioctl_setflags+0x180/0x1e0 fs/file_attr.c:334
 do_vfs_ioctl+0x8f0/0x1440 fs/ioctl.c:560
 __do_sys_ioctl fs/ioctl.c:595 [inline]
 __se_sys_ioctl+0x82/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 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:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
 kasan_save_free_info mm/kasan/kasan.h:406 [inline]
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:234 [inline]
 slab_free_hook mm/slub.c:2523 [inline]
 slab_free mm/slub.c:6611 [inline]
 kmem_cache_free+0x19a/0x910 mm/slub.c:6721
 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:2861 [inline]
 rcu_cpu_kthread+0xbf6/0x1b50 kernel/rcu/tree.c:2949
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff88805f976ab8
 which belongs to the cache xfs_ili of size 328
The buggy address is located 48 bytes inside of
 freed 328-byte region [ffff88805f976ab8, ffff88805f976c00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805f976310 pfn:0x5f976
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 ffff88801fb65140 dead000000000122 0000000000000000
raw: ffff88805f976310 0000000080140010 00000000f5000000 0000000000000000
head: 0080000000000040 ffff88801fb65140 dead000000000122 0000000000000000
head: ffff88805f976310 0000000080140010 00000000f5000000 0000000000000000
head: 0080000000000001 ffffea00017e5d81 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 5929, tgid 5928 (syz.3.4), ts 102678604840, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x28c0/0x2960 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 alloc_pages_mpol+0xd1/0x380 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3039 [inline]
 allocate_slab+0x96/0x3a0 mm/slub.c:3212
 new_slab mm/slub.c:3266 [inline]
 ___slab_alloc+0xb12/0x13f0 mm/slub.c:4636
 __slab_alloc+0xc6/0x1f0 mm/slub.c:4755
 __slab_alloc_node mm/slub.c:4831 [inline]
 slab_alloc_node mm/slub.c:5253 [inline]
 kmem_cache_alloc_noprof+0xec/0x6b0 mm/slub.c:5272
 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+0x377/0x570 fs/xfs/xfs_iops.c:1224
 inode_update_time fs/inode.c:2117 [inline]
 touch_atime+0x2f9/0x6d0 fs/inode.c:2190
 file_accessed include/linux/fs.h:2673 [inline]
 filemap_read+0x100b/0x11a0 mm/filemap.c:2820
 xfs_file_buffered_read+0x1a6/0x350 fs/xfs/xfs_file.c:285
 xfs_file_read_iter+0x282/0x510 fs/xfs/xfs_file.c:310
 __kernel_read+0x4d8/0x970 fs/read_write.c:530
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88805f976980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805f976a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
>ffff88805f976a80: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb
                                                          ^
 ffff88805f976b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805f976b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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