================================================================== BUG: KASAN: slab-use-after-free in ntfs_iget5+0x160/0x3b50 fs/ntfs3/inode.c:531 Read of size 8 at addr ffff88803d2d0ca0 by task syz-executor.1/5668 CPU: 1 PID: 5668 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-12415-g8fc3b8f082cc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x175/0x1b0 mm/kasan/report.c:588 ntfs_iget5+0x160/0x3b50 fs/ntfs3/inode.c:531 ntfs_fill_super+0x2cb7/0x4cb0 fs/ntfs3/super.c:1215 get_tree_bdev+0x468/0x6c0 fs/super.c:1318 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4b4868d8ba Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4b49480f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f785 RCX: 00007f4b4868d8ba RDX: 000000002001f740 RSI: 0000000020000380 RDI: 00007f4b49480fe0 RBP: 00007f4b49481020 R08: 00007f4b49481020 R09: 0000000001010000 R10: 0000000001010000 R11: 0000000000000202 R12: 000000002001f740 R13: 0000000020000380 R14: 00007f4b49480fe0 R15: 0000000020000000 Allocated by task 12293: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:750 slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc_lru+0x122/0x300 mm/slub.c:3501 alloc_inode_sb include/linux/fs.h:2729 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:260 [inline] iget5_locked+0xa0/0x270 fs/inode.c:1285 reiserfs_fill_super+0x12e4/0x2620 fs/reiserfs/super.c:2053 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2649 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2763 __dentry_kill+0x436/0x650 fs/dcache.c:607 dentry_kill+0xbb/0x290 dput+0x1f3/0x420 fs/dcache.c:913 reiserfs_fill_super+0x15d4/0x2620 fs/reiserfs/super.c:2089 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88803d2d06a0 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of freed 1568-byte region [ffff88803d2d06a0, ffff88803d2d0cc0) The buggy address belongs to the physical page: page:ffffea0000f4b400 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803d2d1a80 pfn:0x3d2d0 head:ffffea0000f4b400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88802425fc01 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888145643a00 dead000000000122 0000000000000000 raw: ffff88803d2d1a80 0000000080130012 00000001ffffffff ffff88802425fc01 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 6152, tgid 6150 (syz-executor.3), ts 211920330196, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x31e8/0x3370 mm/page_alloc.c:3221 __alloc_pages+0x255/0x670 mm/page_alloc.c:4477 alloc_slab_page+0x6a/0x160 mm/slub.c:1862 allocate_slab mm/slub.c:2009 [inline] new_slab+0x84/0x2f0 mm/slub.c:2062 ___slab_alloc+0xade/0x1100 mm/slub.c:3215 __slab_alloc mm/slub.c:3314 [inline] __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc_lru+0x1bf/0x300 mm/slub.c:3501 alloc_inode_sb include/linux/fs.h:2729 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:260 [inline] iget5_locked+0xa0/0x270 fs/inode.c:1285 reiserfs_fill_super+0x12e4/0x2620 fs/reiserfs/super.c:2053 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 page_owner free stack trace missing Memory state around the buggy address: ffff88803d2d0b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803d2d0c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88803d2d0c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff88803d2d0d00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff88803d2d0d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================