diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index 38a39331e23..44295e12ee5 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -1645,6 +1645,7 @@ cache_zap_unlocked_bucket(struct namecache *ncp, struct componentname *cnp, struct mtx *blp) { struct namecache *rncp; + struct mtx *rvlp; cache_assert_bucket_unlocked(ncp); @@ -1657,14 +1658,24 @@ cache_zap_unlocked_bucket(struct namecache *ncp, struct componentname *cnp, !bcmp(rncp->nc_name, cnp->cn_nameptr, rncp->nc_nlen)) break; } - if (rncp != NULL) { - cache_zap_locked(rncp); - mtx_unlock(blp); - cache_unlock_vnodes(dvlp, vlp); - atomic_add_long(&zap_bucket_relock_success, 1); - return (0); - } + if (rncp == NULL) + goto out_mismatch; + + if (!(ncp->nc_flag & NCF_NEGATIVE)) + rvlp = VP2VNODELOCK(rncp->nc_vp); + else + rvlp = NULL; + if (rvlp != vlp) + goto out_mismatch; + + cache_zap_locked(rncp); + mtx_unlock(blp); + cache_unlock_vnodes(dvlp, vlp); + atomic_add_long(&zap_bucket_relock_success, 1); + return (0); + +out_mismatch: mtx_unlock(blp); cache_unlock_vnodes(dvlp, vlp); return (EAGAIN);