afs: Avoid afs_GetDCache panic on cache open error

[openafs.git] / src / afs / afs_dcache.c

diff --git a/src/afs/afs_dcache.c b/src/afs/afs_dcache.c
index 321e37f..6ca9c1f 100644 (file)
--- a/src/afs/afs_dcache.c
+++ b/src/afs/afs_dcache.c
@@ -2298,7 +2298,14 @@ afs_GetDCache(struct vcache *avc, afs_size_t abyte,
         */
        DZap(tdc);      /* pages in cache may be old */
        file = afs_CFileOpen(&tdc->f.inode);
-        osi_Assert(file);
+        if (!file) {
+            /* We can't access the file in the disk cache backing this dcache;
+             * bail out. */
+            ReleaseWriteLock(&tdc->lock);
+            afs_PutDCache(tdc);
+            tdc = NULL;
+            goto done;
+        }
        afs_RemoveVCB(&avc->f.fid);
        tdc->f.states |= DWriting;
        tdc->dflags |= DFFetching;