================================================================== BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x240/0x28c fs/xfs/xfs_inode_item.c:797 Read of size 8 at addr ffff0000f1ff0178 by task xfsaild/loop4/7651 CPU: 1 UID: 0 PID: 7651 Comm: xfsaild/loop4 Not tainted 6.15.0-rc6-syzkaller-gc919f08732cc #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 print_address_description+0xa8/0x254 mm/kasan/report.c:408 print_report+0x68/0x84 mm/kasan/report.c:521 kasan_report+0xb0/0x110 mm/kasan/report.c:634 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381 xfs_inode_item_push+0x240/0x28c fs/xfs/xfs_inode_item.c:797 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:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 Allocated by task 7660: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:562 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4147 [inline] slab_alloc_node mm/slub.c:4196 [inline] kmem_cache_alloc_noprof+0x238/0x3e8 mm/slub.c:4203 xfs_inode_item_init+0x3c/0xc0 fs/xfs/xfs_inode_item.c:892 xfs_trans_ijoin+0xe0/0x12c fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_trans_alloc_inode+0x148/0x42c fs/xfs/xfs_trans.c:1103 xfs_attr_add_fork+0x14c/0x2c4 fs/xfs/libxfs/xfs_attr.c:1012 xfs_attr_set+0x5f8/0x1020 fs/xfs/libxfs/xfs_attr.c:1075 xfs_attr_change+0x254/0x334 fs/xfs/xfs_xattr.c:128 xfs_xattr_set+0x120/0x200 fs/xfs/xfs_xattr.c:186 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x120/0x5c4 fs/xattr.c:234 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x158/0x2ac fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __arm64_sys_lsetxattr+0xc0/0xdc fs/xattr.c:750 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Freed by task 7670: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x68/0x88 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2380 [inline] slab_free mm/slub.c:4642 [inline] kmem_cache_free+0x184/0x550 mm/slub.c:4744 xfs_inode_item_destroy+0x70/0x84 fs/xfs/xfs_inode_item.c:914 xfs_inode_free_callback+0x14c/0x1bc fs/xfs/xfs_icache.c:161 rcu_do_batch kernel/rcu/tree.c:2568 [inline] rcu_core+0x848/0x17a4 kernel/rcu/tree.c:2824 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2841 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 The buggy address belongs to the object at ffff0000f1ff0148 which belongs to the cache xfs_ili of size 264 The buggy address is located 48 bytes inside of freed 264-byte region [ffff0000f1ff0148, ffff0000f1ff0250) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x131ff0 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 05ffc00000000000 ffff0000c5089000 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000f1ff0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000f1ff0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000f1ff0100: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb ^ ffff0000f1ff0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000f1ff0200: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc ==================================================================