commit 8b0ba61df5a1 ("fs/xattr.c: fix simple_xattr_list to always
include security.* xattrs") failed to reset err after the call to
security_inode_listsecurity(), which returns the length of the
returned xattr name. This results in simple_xattr_list() incorrectly
returning this length even if a POSIX acl is also set on the inode.

Reported-by: Collin Funk <collin.fu...@gmail.com>
Closes: https://lore.kernel.org/selinux/8734ceal7q....@gmail.com/
Reported-by: Paul Eggert <egg...@cs.ucla.edu>
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2369561
Fixes: 8b0ba61df5a1 ("fs/xattr.c: fix simple_xattr_list to always include 
security.* xattrs")

Signed-off-by: Stephen Smalley <stephen.smalley.w...@gmail.com>
---
 fs/xattr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xattr.c b/fs/xattr.c
index 8ec5b0204bfd..600ae97969cf 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -1479,6 +1479,7 @@ ssize_t simple_xattr_list(struct inode *inode, struct 
simple_xattrs *xattrs,
                buffer += err;
        }
        remaining_size -= err;
+       err = 0;
 
        read_lock(&xattrs->lock);
        for (rbp = rb_first(&xattrs->rb_root); rbp; rbp = rb_next(rbp)) {
-- 
2.49.0


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