===================================================== BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x100 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] listxattr+0x2e9/0x6a0 fs/xattr.c:843 path_listxattr fs/xattr.c:865 [inline] __do_sys_listxattr fs/xattr.c:877 [inline] __se_sys_listxattr fs/xattr.c:874 [inline] __ia32_sys_listxattr+0x167/0x2e0 fs/xattr.c:874 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:230 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:255 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:293 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was stored to memory at: ntfs_list_ea fs/ntfs3/xattr.c:232 [inline] ntfs_listxattr+0x5d2/0x8d0 fs/ntfs3/xattr.c:733 vfs_listxattr fs/xattr.c:494 [inline] listxattr+0x1f0/0x6a0 fs/xattr.c:841 path_listxattr fs/xattr.c:865 [inline] __do_sys_listxattr fs/xattr.c:877 [inline] __se_sys_listxattr fs/xattr.c:874 [inline] __ia32_sys_listxattr+0x167/0x2e0 fs/xattr.c:874 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:230 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:255 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:293 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0x121/0x3c0 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] ntfs_read_ea+0x78c/0x10b0 fs/ntfs3/xattr.c:118 ntfs_list_ea fs/ntfs3/xattr.c:204 [inline] ntfs_listxattr+0x173/0x8d0 fs/ntfs3/xattr.c:733 vfs_listxattr fs/xattr.c:494 [inline] listxattr+0x1f0/0x6a0 fs/xattr.c:841 path_listxattr fs/xattr.c:865 [inline] __do_sys_listxattr fs/xattr.c:877 [inline] __se_sys_listxattr fs/xattr.c:874 [inline] __ia32_sys_listxattr+0x167/0x2e0 fs/xattr.c:874 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:230 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:255 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:293 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Bytes 26-29 of 63 are uninitialized Memory access of size 63 starts at ffff8880a60149c0 Data copied to user address 0000000020000180 CPU: 1 PID: 9063 Comm: syz-executor.5 Not tainted 6.7.0-rc3-syzkaller-00033-g3b47bc037bd4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 =====================================================