>> Under 2.2.8 with various Yggdrasil changes, the kernel
>> crashes while uncompressing its initial ~2MB romfs ramdisk. [...]
>It's a race condition -- the ramdisk code tries to wake up bdflush
>before the latter gets a chance to initialize itself. See the
>thread "OOPS ... (bdflush related)". Linus' suggestion was to check
>for bdflush_tsk == NULL in wakeup_bdflush and simply return if true.
>I haven't tested it yet.
You are apparently correct! The following patch fixed the
problem. I am posting this message from my machine, running 2.2.8.
Thanks for your help. (Also, thanks to Janos Farkas for exploring
some other possibilities related to this problem.)
Adam J. Richter __ ______________ 4880 Stevens Creek Blvd, Suite 104
adam@yggdrasil.com \ / San Jose, California 95129-1034
+1 408 261-6630 | g g d r a s i l United States of America
fax +1 408 261-6631 "Free Software For The Rest Of Us."
--- /tmp/linux-2.2.8/fs/buffer.c Tue May 11 09:55:49 1999
+++ linux/fs/buffer.c Thu May 13 08:21:18 1999
@@ -1559,7 +1559,7 @@
void wakeup_bdflush(int wait)
{
- if (current == bdflush_tsk)
+ if (current == bdflush_tsk || bdflush_tsk == NULL)
return;
wake_up_process(bdflush_tsk);
if (wait) {
-
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