loop4: detected capacity change from 0 to 190 ================================================================== BUG: KASAN: use-after-free in ntfs_read_folio+0x6d4/0x200c fs/ntfs/aops.c:489 Read of size 1 at addr ffff000143b6e17f by task syz-executor.4/10811 CPU: 0 PID: 10811 Comm: syz-executor.4 Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #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+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:319 [inline] print_report+0x174/0x514 mm/kasan/report.c:430 kasan_report+0xd4/0x130 mm/kasan/report.c:536 kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:187 __asan_memcpy+0x48/0x90 mm/kasan/shadow.c:105 ntfs_read_folio+0x6d4/0x200c fs/ntfs/aops.c:489 filemap_read_folio+0x14c/0x39c mm/filemap.c:2424 do_read_cache_folio+0x24c/0x544 mm/filemap.c:3683 do_read_cache_page mm/filemap.c:3749 [inline] read_cache_page+0x6c/0x180 mm/filemap.c:3758 read_mapping_page include/linux/pagemap.h:769 [inline] ntfs_map_page fs/ntfs/aops.h:75 [inline] load_and_init_attrdef fs/ntfs/super.c:1617 [inline] load_system_files+0x1e34/0x4734 fs/ntfs/super.c:1825 ntfs_fill_super+0x14e0/0x2314 fs/ntfs/super.c:2900 mount_bdev+0x26c/0x368 fs/super.c:1371 ntfs_mount+0x44/0x58 fs/ntfs/super.c:3057 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1501 do_new_mount+0x25c/0x8c8 fs/namespace.c:3042 path_mount+0x590/0xe20 fs/namespace.c:3372 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount fs/namespace.c:3571 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3571 __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+0x64/0x198 arch/arm64/kernel/syscall.c:193 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+0x190/0x194 arch/arm64/kernel/entry.S:591 The buggy address belongs to the physical page: page:0000000046e64f63 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x183b6e flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc00050ee348 fffffc00050edb48 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000143b6e000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff000143b6e080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff000143b6e100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff000143b6e180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff000143b6e200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ntfs: volume version 3.1. syz-executor.4: attempt to access beyond end of device loop4: rw=0, sector=2072, nr_sectors = 8 limit=190 syz-executor.4: attempt to access beyond end of device loop4: rw=0, sector=552, nr_sectors = 8 limit=190 syz-executor.4: attempt to access beyond end of device loop4: rw=0, sector=224, nr_sectors = 8 limit=190