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-rw-r--r--sys/fs/cd9660/cd9660_vfsops.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/fs/cd9660/cd9660_vfsops.c b/sys/fs/cd9660/cd9660_vfsops.c
index 01690a4..16d51e7 100644
--- a/sys/fs/cd9660/cd9660_vfsops.c
+++ b/sys/fs/cd9660/cd9660_vfsops.c
@@ -216,9 +216,13 @@ cd9660_mount(mp, path, data, ndp, p)
NDFREE(ndp, NDF_ONLY_PNBUF);
devvp = ndp->ni_vp;
+ if (devsw(devvp->v_rdev) == NULL) {
+ vrele(devvp);
+ return (ENXIO);
+ }
if (!vn_isdisk(devvp)) {
vrele(devvp);
- return ENOTBLK;
+ return (ENOTBLK);
}
/*
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