bugGNU GRUB - Bugs: bug #21097, Grub hangs during boot with 3c905C...

 
 

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bug #21097: Grub hangs during boot with 3c905C NIC

Submitted by:  David Chabal <dchabal>
Submitted on:  Mon 17 Sep 2007 09:03:55 AM UTC  
 
Category: BootingSeverity: Major
Priority: 5 - NormalItem Group: None
Status: NonePrivacy: Public
Assigned to: NoneOriginator Name: 
Open/Closed: ClosedRelease: 0.97
Release: NoneReproducibility: Every Time
Planned Release: None

Sat 15 Dec 2007 11:55:57 AM UTC, comment #1:

We've moved to GRUB 2 as a development platform. Unfortunately, GRUB 2 doesn't have network support yet, although there's ongoing work to implement it. If you want to help on that, please contact <grub-devel@gnu.org>.

In the meantime, this bug doesn't apply. I'm closing it.

Robert Millan <robertmh>
Project Administrator
Mon 17 Sep 2007 09:03:55 AM UTC, original submission:

Problem encountered :
---------------------
Grub hangs during the boot after NIC detection (after the message « MAC Address = » ). The box is frozen.

Configuration :
---------------

Grub 0.97 + grub-0.97-nic_update-2.patch

Box for cross-compiling :
FedoraCore 2.6.15-1.2054_FC5smp i686 GNU/LINUX with gcc 4.1.0 20060304 (Red Hat 4.1.0-3).

Box booting with grub : HP Kayak P3 866 MHz with a NIC 3com 509C-TX-M (MBA v4.30)

Bug analysis :
--------------
In the file 3c90x.c, the 3c90x_poll() function uses empty loops for waiting. A compiler optimization probably fires them.

Patch :
---------
Force the declaration of the loop counter as volatile :
--- 3c90x.c.ori 2007-09-17 10:30:35.174371000 +0200
+++ 3c90x.c.ok 2007-09-17 10:48:23.054370000 +0200
@@ -601,7 +601,8 @@
static int
a3c90x_poll(struct nic *nic, int retrieve)
{
- int i, errcode;
+ volatile int i;
+ int errcode;

David

David Chabal <dchabal>

 

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -unavailable- added by robertmh (Posted a comment)
  • -unavailable- added by dchabal (Submitted the item)
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    Follows 1 latest change.

    Date Changed By Updated Field Previous Value => Replaced By
    Sat 15 Dec 2007 11:55:57 AM UTCrobertmhOpen/ClosedOpen=>Closed

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