================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_list_ea fs/ntfs3/xattr.c:223 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_listxattr+0x2b8/0x464 fs/ntfs3/xattr.c:744 Read of size 48 at addr ffff0000dc2e7e30 by task syz-executor.0/12070 CPU: 1 PID: 12070 Comm: syz-executor.0 Not tainted 6.3.0-rc7-syzkaller-g327bf9bb94cf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __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+0x3c/0x84 mm/kasan/shadow.c:105 ntfs_list_ea fs/ntfs3/xattr.c:223 [inline] ntfs_listxattr+0x2b8/0x464 fs/ntfs3/xattr.c:744 vfs_listxattr fs/xattr.c:473 [inline] listxattr+0x29c/0x3cc fs/xattr.c:820 path_listxattr fs/xattr.c:844 [inline] __do_sys_listxattr fs/xattr.c:856 [inline] __se_sys_listxattr fs/xattr.c:853 [inline] __arm64_sys_listxattr+0x13c/0x21c fs/xattr.c:853 __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+0x4c/0x15c 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 Allocated by task 12070: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:510 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0xcc/0x1b8 mm/slab_common.c:980 kmalloc include/linux/slab.h:584 [inline] ntfs_read_ea+0x3c0/0x818 fs/ntfs3/xattr.c:118 ntfs_list_ea fs/ntfs3/xattr.c:203 [inline] ntfs_listxattr+0x148/0x464 fs/ntfs3/xattr.c:744 vfs_listxattr fs/xattr.c:473 [inline] listxattr+0x29c/0x3cc fs/xattr.c:820 path_listxattr fs/xattr.c:844 [inline] __do_sys_listxattr fs/xattr.c:856 [inline] __se_sys_listxattr fs/xattr.c:853 [inline] __arm64_sys_listxattr+0x13c/0x21c fs/xattr.c:853 __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+0x4c/0x15c 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 object at ffff0000dc2e7e00 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 48 bytes inside of allocated 60-byte region [ffff0000dc2e7e00, ffff0000dc2e7e3c) The buggy address belongs to the physical page: page:000000009d2d4576 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11c2e7 flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 ffff0000c0002300 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000dc2e7d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dc2e7d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000dc2e7e00: 00 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc ^ ffff0000dc2e7e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000dc2e7f00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================