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BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x248/0x290 fs/xfs/xfs_inode_item.c:796
Read of size 8 at addr ffff0000f5e32698 by task xfsaild/loop4/7238

CPU: 0 UID: 0 PID: 7238 Comm: xfsaild/loop4 Not tainted 6.14.0-rc4-syzkaller-g017f704fbfb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x198/0x550 mm/kasan/report.c:521
 kasan_report+0xd8/0x138 mm/kasan/report.c:634
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 xfs_inode_item_push+0x248/0x290 fs/xfs/xfs_inode_item.c:796
 xfsaild_push_item fs/xfs/xfs_trans_ail.c:390 [inline]
 xfsaild_push fs/xfs/xfs_trans_ail.c:518 [inline]
 xfsaild+0xba4/0x29e4 fs/xfs/xfs_trans_ail.c:700
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

Allocated by task 7252:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:562
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4115 [inline]
 slab_alloc_node mm/slub.c:4164 [inline]
 kmem_cache_alloc_noprof+0x254/0x410 mm/slub.c:4171
 xfs_inode_item_init+0x3c/0xc0 fs/xfs/xfs_inode_item.c:891
 xfs_trans_ijoin+0xe4/0x120 fs/xfs/libxfs/xfs_trans_inode.c:36
 xfs_vn_update_time+0x334/0x608 fs/xfs/xfs_iops.c:1132
 inode_update_time fs/inode.c:2124 [inline]
 __file_update_time fs/inode.c:2353 [inline]
 file_modified_flags+0x300/0x444 fs/inode.c:2424
 file_modified+0x24/0x34 fs/inode.c:2440
 xfs_file_fallocate+0x16c/0x3a0 fs/xfs/xfs_file.c:1121
 vfs_fallocate+0x578/0x6c0 fs/open.c:338
 ksys_fallocate fs/open.c:362 [inline]
 __do_sys_fallocate fs/open.c:367 [inline]
 __se_sys_fallocate fs/open.c:365 [inline]
 __arm64_sys_fallocate+0xc0/0x110 fs/open.c:365
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Freed by task 7287:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x64/0x8c mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kmem_cache_free+0x198/0x554 mm/slub.c:4711
 xfs_inode_item_destroy+0x80/0x94 fs/xfs/xfs_inode_item.c:913
 xfs_inode_free_callback+0x154/0x1cc fs/xfs/xfs_icache.c:161
 rcu_do_batch kernel/rcu/tree.c:2546 [inline]
 rcu_core+0x898/0x1b5c kernel/rcu/tree.c:2802
 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2819
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 __do_softirq+0x14/0x20 kernel/softirq.c:595

The buggy address belongs to the object at ffff0000f5e32668
 which belongs to the cache xfs_ili of size 264
The buggy address is located 48 bytes inside of
 freed 264-byte region [ffff0000f5e32668, ffff0000f5e32770)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000f5e32b88 pfn:0x135e32
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000000 ffff0000c3e1ddc0 dead000000000122 0000000000000000
raw: ffff0000f5e32b88 00000000800c0008 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000f5e32580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000f5e32600: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb
>ffff0000f5e32680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff0000f5e32700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
 ffff0000f5e32780: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb
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