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| author | Konstantin Belousov <kib@FreeBSD.org> | 2021-02-28 00:13:19 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2021-03-21 17:54:21 +0000 |
| commit | 512efd236cb1aeeac591b1e5701fb1fe26d91a22 (patch) | |
| tree | a744c061a1b59cf51e46bd9955354d5f9b3f99be | |
| parent | 7b7708867c4473f47a577427320459f57a70d458 (diff) | |
| download | src-512efd236cb1aeeac591b1e5701fb1fe26d91a22.tar.gz src-512efd236cb1aeeac591b1e5701fb1fe26d91a22.zip | |
nameicap_tracker_add: avoid duplicates in the tracker list
Tested by: pho
(cherry picked from commit 2388ad7c293fbc89ee239a1adcb87fd158c4e8e9)
| -rw-r--r-- | sys/kern/vfs_lookup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c index cc0fe415365a..84a40d9e8fec 100644 --- a/sys/kern/vfs_lookup.c +++ b/sys/kern/vfs_lookup.c @@ -179,6 +179,9 @@ nameicap_tracker_add(struct nameidata *ndp, struct vnode *dp) if ((ndp->ni_lcf & NI_LCF_CAP_DOTDOT) == 0 || dp->v_type != VDIR) return; cnp = &ndp->ni_cnd; + nt = TAILQ_LAST(&ndp->ni_cap_tracker, nameicap_tracker_head); + if (nt != NULL && nt->dp == dp) + return; nt = uma_zalloc(nt_zone, M_WAITOK); vhold(dp); nt->dp = dp; |