diff options
| -rw-r--r-- | hw/misc/vfio.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c index 8db182fa3d..e669bbeca1 100644 --- a/hw/misc/vfio.c +++ b/hw/misc/vfio.c @@ -3681,10 +3681,10 @@ static int vfio_initfn(PCIDevice *pdev) strncat(path, "iommu_group", sizeof(path) - strlen(path) - 1); - len = readlink(path, iommu_group_path, PATH_MAX); - if (len <= 0) { + len = readlink(path, iommu_group_path, sizeof(path)); + if (len <= 0 || len >= sizeof(path)) { error_report("vfio: error no iommu_group for device"); - return -errno; + return len < 0 ? -errno : ENAMETOOLONG; } iommu_group_path[len] = 0; |