BUG: KMSAN: uninit-value in strncmp+0x11e/0x180 lib/string.c:307 strncmp+0x11e/0x180 lib/string.c:307 is_known_namespace fs/hfsplus/xattr.c:45 [inline] name_len fs/hfsplus/xattr.c:397 [inline] hfsplus_listxattr+0xe61/0x1aa0 fs/hfsplus/xattr.c:746 vfs_listxattr fs/xattr.c:473 [inline] listxattr+0x700/0x780 fs/xattr.c:820 path_listxattr fs/xattr.c:844 [inline] __do_sys_llistxattr fs/xattr.c:862 [inline] __se_sys_llistxattr fs/xattr.c:859 [inline] __ia32_sys_llistxattr+0x171/0x300 fs/xattr.c:859 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Reported-by: syzbot <syzbot+92ef9ee419803871020e@xxxxxxxxxxxxxxxxxxxxxxxxx> Link: https://syzkaller.appspot.com/bug?extid=92ef9ee419803871020e Signed-off-by: houweitao <houweitao@xxxxxxxxxxxxxx> --- fs/hfsplus/xattr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index 58021e73c00b..f7f9d0889df3 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -698,7 +698,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) return err; } - strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + strbuf = kzalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); if (!strbuf) { res = -ENOMEM; -- 2.17.1
