================================================================== BUG: KASAN: use-after-free in xfs_inode_item_push+0x28b/0x2e0 fs/xfs/xfs_inode_item.c:594 Read of size 8 at addr ffff888071503550 by task xfsaild/loop2/4103 CPU: 0 PID: 4103 Comm: xfsaild/loop2 Not tainted 6.1.108-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 xfs_inode_item_push+0x28b/0x2e0 fs/xfs/xfs_inode_item.c:594 xfsaild_push_item fs/xfs/xfs_trans_ail.c:414 [inline] xfsaild_push fs/xfs/xfs_trans_ail.c:484 [inline] xfsaild+0xdd2/0x2a70 fs/xfs/xfs_trans_ail.c:669 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 4063: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:683 [inline] xfs_inode_item_init+0x2f/0xc0 fs/xfs/xfs_inode_item.c:687 xfs_trans_ijoin+0xb9/0xe0 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_init_new_inode+0xd6a/0x10c0 fs/xfs/xfs_inode.c:902 xfs_symlink+0xc14/0x1fa0 fs/xfs/xfs_symlink.c:234 xfs_vn_symlink+0x1f1/0x730 fs/xfs/xfs_iops.c:420 vfs_symlink+0x247/0x3d0 fs/namei.c:4473 do_symlinkat+0x21e/0x390 fs/namei.c:4502 __do_sys_symlinkat fs/namei.c:4519 [inline] __se_sys_symlinkat fs/namei.c:4516 [inline] __x64_sys_symlinkat+0x95/0xa0 fs/namei.c:4516 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 21: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x292/0x510 mm/slub.c:3683 xfs_inode_free_callback+0x14e/0x1c0 fs/xfs/xfs_icache.c:145 rcu_do_batch kernel/rcu/tree.c:2297 [inline] rcu_core+0xade/0x1820 kernel/rcu/tree.c:2557 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff888071503520 which belongs to the cache xfs_ili of size 264 The buggy address is located 48 bytes inside of 264-byte region [ffff888071503520, ffff888071503628) The buggy address belongs to the physical page: page:ffffea0001c540c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x71503 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888148af1140 raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4049, tgid 4048 (syz.3.91), ts 78429692478, free_ts 69276675452 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517 prep_new_page mm/page_alloc.c:2524 [inline] get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x1a5/0x2d0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:683 [inline] xfs_inode_item_init+0x2f/0xc0 fs/xfs/xfs_inode_item.c:687 xfs_trans_ijoin+0xb9/0xe0 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_init_new_inode+0xd6a/0x10c0 fs/xfs/xfs_inode.c:902 xfs_qm_qino_alloc+0x4fb/0xa20 fs/xfs/xfs_qm.c:782 xfs_qm_init_quotainos+0x654/0x8a0 fs/xfs/xfs_qm.c:1548 xfs_qm_init_quotainfo+0x11a/0x12f0 fs/xfs/xfs_qm.c:635 xfs_qm_mount_quotas+0x97/0x620 fs/xfs/xfs_qm.c:1424 xfs_mountfs+0x185d/0x1f00 fs/xfs/xfs_mount.c:959 xfs_fs_fill_super+0x1145/0x13a0 fs/xfs/xfs_super.c:1681 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1444 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1b7/0x210 mm/slub.c:2586 put_cpu_partial+0x17b/0x250 mm/slub.c:2662 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422 getname_flags+0xb8/0x4f0 fs/namei.c:139 getname fs/namei.c:218 [inline] __do_sys_unlink fs/namei.c:4440 [inline] __se_sys_unlink fs/namei.c:4438 [inline] __x64_sys_unlink+0x38/0x50 fs/namei.c:4438 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff888071503400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888071503480: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff888071503500: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb ^ ffff888071503580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888071503600: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb ==================================================================