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xattr: Fail with -EINVAL for NULL attribute names

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Commit 98e9cb57 improved the xattr name checks in xattr_resolve_name but
didn't update the NULL attribute name check appropriately, so NULL
attribute names lead to NULL pointer dereferences.  Turn that into
-EINVAL results instead.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
  fs/xattr.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Andreas Gruenbacher
2016-05-09 13:28:49 +02:00
committed by Al Viro
parent e0d46f5c6e
commit aaf431b4f9
1 changed files with 1 additions and 1 deletions
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2
fs/xattr.c
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@@ -668,7 +668,7 @@ xattr_resolve_name(const struct xattr_handler **handlers, const char **name)
const struct xattr_handler *handler; const struct xattr_handler *handler;
if (!*name) if (!*name)
return NULL; return ERR_PTR(-EINVAL);
for_each_xattr_handler(handlers, handler) { for_each_xattr_handler(handlers, handler) {
const char *n; const char *n;