When modules.alias is not available (e.g. monolithic kernel), virPCIDeviceFindBestVFIOVariant() would fail, causing the entire PCI device detach to abort.
Instead, log a warning and return success with no variant found, allowing the caller to fall back to the generic vfio-pci driver. Signed-off-by: Baptiste Daroussin <[email protected]> Reviewed-by: Peter Krempa <[email protected]> --- src/util/virpci.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/util/virpci.c b/src/util/virpci.c index d43fa1ef54..fa04264a95 100644 --- a/src/util/virpci.c +++ b/src/util/virpci.c @@ -1459,6 +1459,12 @@ virPCIDeviceFindBestVFIOVariant(virPCIDevice *dev, uname(&unameInfo); modulesAliasPath = g_strdup_printf("/lib/modules/%s/modules.alias", unameInfo.release); + if (!virFileExists(modulesAliasPath)) { + /* on monolithic kernel this file does not exist */ + VIR_DEBUG("modules.alias not available (%s), skipping VFIO variant detection", + modulesAliasPath); + return 0; + } if (virFileReadAll(modulesAliasPath, 8 * 1024 * 1024, &modulesAliasContent) < 0) return -1; -- 2.43.0
