================================================================== BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x3ac/0x774 fs/xfs/xfs_inode_item.c:801 Read of size 8 at addr ffff0000c157da70 by task xfsaild/loop1/8347 CPU: 1 UID: 0 PID: 8347 Comm: xfsaild/loop1 Not tainted syzkaller #0 PREEMPT 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+0x3ac/0x774 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+0xb34/0x2868 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 8352: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:77 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:573 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4978 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_noprof+0x338/0x648 mm/slub.c:5295 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_icreate+0xe8/0x168 fs/xfs/xfs_inode.c:605 xfs_symlink+0x4e8/0xacc fs/xfs/xfs_symlink.c:170 xfs_vn_symlink+0x100/0x4d4 fs/xfs/xfs_iops.c:444 vfs_symlink+0x138/0x288 fs/namei.c:4817 do_symlinkat+0x17c/0x360 fs/namei.c:4843 __do_sys_symlinkat fs/namei.c:4859 [inline] __se_sys_symlinkat fs/namei.c:4856 [inline] __arm64_sys_symlinkat+0x9c/0xb4 fs/namei.c:4856 __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/0x254 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 6550: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:77 __kasan_save_free_info+0x58/0x70 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+0x74/0xa4 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2543 [inline] slab_free mm/slub.c:6642 [inline] kmem_cache_free+0x18c/0x6dc mm/slub.c:6752 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+0x840/0x17d0 kernel/rcu/tree.c:2861 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2878 handle_softirqs+0x328/0xc88 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 The buggy address belongs to the object at ffff0000c157da40 which belongs to the cache xfs_ili of size 264 The buggy address is located 48 bytes inside of freed 264-byte region [ffff0000c157da40, ffff0000c157db48) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10157d flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 05ffc00000000000 ffff0000c547b8c0 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c157d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c157d980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000c157da00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ^ ffff0000c157da80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c157db00: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc ==================================================================