Re: 2.6.12-rc1-bk does not boot x86_64

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> I tried the recent 2.6.12-rc1-bk5 snapshot from kernel.org.
> When I want to boot my x86_64 system only a green line appears on screen.
> The config is the same as in 2.6.12-rc1-bk4 which works flawlessly on my
> system.
> 
> I only saw the message that CPU0 and CPU1 where initialized. And then
> there was
> Brinnging up CPUs and it stopped.
> 
> Its an Intel Pentium4 640 with (EMT64,HT,EIST,CIE enabled).
> The graphic card is an Nvidia 6600GT PCIe device.

I had the same nasty surprise this morning, this will probably help:


Well, this is a brown paper bag for someone.  The new protocol
registration locking uses a rwlock to limit access to the protocol list.
Unfortunately, the initialisation:

static rwlock_t proto_list_lock;

Only works to initialise the lock as unlocked on platforms whose unlock
signal is all zeros.  On other platforms, they think it's already locked
and hang forever.

Signed-off-by: James Bottomley <[email protected]>


===== net/core/sock.c 1.67 vs edited =====
--- 1.67/net/core/sock.c	2005-03-26 17:04:35 -06:00
+++ edited/net/core/sock.c	2005-04-02 13:37:20 -06:00
@@ -1352,7 +1352,7 @@
 
 EXPORT_SYMBOL(sk_common_release);
 
-static rwlock_t proto_list_lock;
+static DEFINE_RWLOCK(proto_list_lock);
 static LIST_HEAD(proto_list);
 
 int proto_register(struct proto *prot, int alloc_slab)


-


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