git: 8ae87de4df1d - releng/13.0 - nameicap_check_dotdot: trim tracker on check

[Konstantin Belousov]

The branch releng/13.0 has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=8ae87de4df1ddd748883ab00666a152d3b8e7301

commit 8ae87de4df1ddd748883ab00666a152d3b8e7301
Author:     Konstantin Belousov <kib at FreeBSD.org>
AuthorDate: 2021-02-28 00:15:21 +0000
Commit:     Konstantin Belousov <kib at FreeBSD.org>
CommitDate: 2021-03-04 20:08:02 +0000

    nameicap_check_dotdot: trim tracker on check
    
    Approved by:     re (gjb)
    
    (cherry picked from commit 49c98a4bf3a87ace0df99056fa683805c1645e61)
---
 sys/kern/vfs_lookup.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c
index abc01c73e24c..b4280f85c5b6 100644
--- a/sys/kern/vfs_lookup.c
+++ b/sys/kern/vfs_lookup.c
@@ -240,8 +240,12 @@ nameicap_check_dotdot(struct nameidata *ndp, struct vnode *dp)
 		return (ENOTCAPABLE);
 	TAILQ_FOREACH_REVERSE(nt, &ndp->ni_cap_tracker, nameicap_tracker_head,
 	    nm_link) {
-		if (dp == nt->dp)
+		if (dp == nt->dp) {
+			nt = TAILQ_NEXT(nt, nm_link);
+			if (nt != NULL)
+				nameicap_cleanup_from(ndp, nt);
 			return (0);
+		}
 	}
 	return (ENOTCAPABLE);
 }