Hello all,
when I updated my Kernel from version 5.4.155 to 5.4.215 I get an strange xhci error:
xhci-hcd f10f0000.usb3: ERROR unknown event type 37
xhci-hcd f10f0000.usb3: ERROR Transfer event TRB DMA ptr
not part of current TD ep_index 2 comp_code 13
After a lot of this messages, my hardware makes a reboot without any more outputs.
The error only occures when i add console=null to my kernel bootargs. When I add instead console=ttyS0,115200 no error occured.
Now I go back in kernelversions. The error occured first in version 5.4.159. Between patchlevel 158 and 159 there is a change:
--- linux-5.4.158/kernel/printk/printk.c 2021-11-06
13:59:45.000000000 +0100
+++ linux-5.4.159/kernel/printk/printk.c 2021-11-12
14:43:05.000000000 +0100
@@ -2193,8 +2193,15 @@
char *s, *options, *brl_options = NULL;
int idx;
- if (str[0] == 0)
+ /*
+ * console="" or console=null have been suggested as a
way to
+ * disable console output. Use ttynull that has been
created
+ * for exacly this purpose.
+ */
+ if (str[0] == 0 || strcmp(str, "null") == 0) {
+ __add_preferred_console("ttynull", 0, NULL, NULL);
return 1;
+ }
if (_braille_console_setup(&str,
&brl_options))
return 1;
I checked my kernelconfig and found that I have no ttynull device configured (CONFIG_NULL_TTY=n). Add CONFIG_NULL_TTY=y to my kernelconfig doesn't made a change.
When I undo the change above, everything works fine.
Does anybody know, what could be the main trigger for the error
above?
Regards,
Sarah
-- Unsere Aussagen koennen Irrtuemer und Missverstaendnisse enthalten.
Bitte pruefen Sie die Aussagen fuer Ihren Fall, bevor Sie Entscheidungen auf Grundlage dieser Aussagen treffen.
Wiesemann & Theis GmbH, Porschestr. 12, D-42279 Wuppertal
Geschaeftsfuehrer: Dipl.-Ing. Ruediger Theis
Registergericht: Amtsgericht Wuppertal, HRB 6377
Infos zum Datenschutz: www.wut.de/datenschutz
Tel. +49-202/2680-0, Fax +49-202/2680-265, www.wut.de
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
