GNU bug report logs - #52498
[PATCH] linux-modules: Ignore EINVAL in ‘modprobe’ mode.

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From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: 52498 <at> debbugs.gnu.org
Subject: [bug#52498] [PATCH] linux-modules: Ignore EINVAL in ‘modprobe’ mode.
Date: Wed, 15 Dec 2021 01:47:04 +0100

Loading the framebuffer-coreboot module simply fails with EINVAL on a
non-Corebooted system.  Crashing the system with a kernel panic is not
a reasonable reaction to loading valid modules on unsupported hardware.
The kernel should log an error, which the user is expected to see.

Bogus module names will still be fatally reported by linux-modules.drv.

* gnu/build/linux-modules.scm (load-linux-module*):
Ignore EINVAL errors when operating recursively.
---
 gnu/build/linux-modules.scm | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/gnu/build/linux-modules.scm b/gnu/build/linux-modules.scm
index 3a47322065..053720574b 100644
--- a/gnu/build/linux-modules.scm
+++ b/gnu/build/linux-modules.scm
@@ -354,11 +354,13 @@ (define (load-dependencies file)
              (close-fdes fd)
              #t)
            (lambda args
-             ;; If this module was already loaded and we're in modprobe style, ignore
-             ;; the error.
              (when fd (close-fdes fd))
-             (or (and recursive? (= EEXIST (system-error-errno args)))
-                 (apply throw args)))))))
+             (let ((errno (system-error-errno args)))
+               (or (and recursive?      ; we're operating in ‘modprobe’ style
+                        (member errno
+                                (list EEXIST    ; already loaded
+                                      EINVAL))) ; unsupported by hardware
+                   (apply throw args))))))))
 
 (define (load-linux-modules-from-directory modules directory)
   "Load MODULES and their dependencies from DIRECTORY, a directory containing
-- 
2.34.0

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