syz-executor.1: attempt to access beyond end of device loop1: rw=0, sector=32774, nr_sectors = 2 limit=4096 ================================================================== BUG: KASAN: use-after-free in ntfs_attr_find+0x5a0/0x9d0 fs/ntfs/attrib.c:609 Read of size 2 at addr ffff00011e5a8152 by task syz-executor.1/7354 CPU: 1 PID: 7354 Comm: syz-executor.1 Not tainted 6.1.23-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load_n_noabort+0x28/0x34 mm/kasan/report_generic.c:361 ntfs_attr_find+0x5a0/0x9d0 fs/ntfs/attrib.c:609 ntfs_attr_lookup+0x3dc/0x1cd8 ntfs_read_locked_attr_inode fs/ntfs/inode.c:1239 [inline] ntfs_attr_iget+0x3d4/0x1b40 fs/ntfs/inode.c:238 load_system_files+0x15c0/0x4734 fs/ntfs/super.c:1800 ntfs_fill_super+0x14e0/0x2314 fs/ntfs/super.c:2892 mount_bdev+0x26c/0x368 fs/super.c:1423 ntfs_mount+0x44/0x58 fs/ntfs/super.c:3049 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1553 do_new_mount+0x25c/0x8c8 fs/namespace.c:3040 path_mount+0x590/0xe58 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 The buggy address belongs to the physical page: page:00000000e1837273 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x15e5a8 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc0004796a48 fffffc0004834948 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00011e5a8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff00011e5a8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff00011e5a8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff00011e5a8180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff00011e5a8200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================