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Message-ID: <16127.1178667721@turing-police.cc.vt.edu>
Date: Tue, 08 May 2007 19:42:01 -0400
From: Valdis.Kletnieks@...edu
To: Andi Kleen <andi@...stfloor.org>
Cc: Ken Moffat <zarniwhoop@...world.com>, linux-kernel@...r.kernel.org,
"Eric W. Biederman" <ebiederm@...ssion.com>,
Vivek Goyal <vgoyal@...ibm.com>, Andi Kleen <ak@...e.de>
Subject: Re: Lockup after logging out of X
On Wed, 09 May 2007 01:01:34 +0200, Andi Kleen said:
> Already known, although it is still unclear what the bug actually is.
> Can you run with the appended patch please (from Eric Biederman)
> and post any backtraces the WARN_ON in there spews out?
> diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
> index b17fc16..e6a4d1e 100644
> + if (likely(v < __START_KERNEL_map)) \
> + v -= PAGE_OFFSET; \
> + else \
> + v = (v - __START_KERNEL_map) + phys_base; \
ERROR: "phys_base" [net/sunrpc/sunrpc.ko] undefined!
ERROR: "phys_base" [net/sunrpc/auth_gss/rpcsec_gss_spkm3.ko] undefined!
ERROR: "phys_base" [net/sunrpc/auth_gss/auth_rpcgss.ko] undefined!
ERROR: "phys_base" [net/mac80211/mac80211.ko] undefined!
ERROR: "phys_base" [net/ieee80211/ieee80211_crypt_wep.ko] undefined!
ERROR: "phys_base" [net/ieee80211/ieee80211_crypt_tkip.ko] undefined!
ERROR: "phys_base" [fs/nfsd/nfsd.ko] undefined!
ERROR: "phys_base" [fs/nfs/nfs.ko] undefined!
ERROR: "phys_base" [fs/jbd2/jbd2.ko] undefined!
ERROR: "phys_base" [fs/ecryptfs/ecryptfs.ko] undefined!
ERROR: "phys_base" [drivers/net/ppp_mppe.ko] undefined!
ERROR: "phys_base" [drivers/char/agp/intel-agp.ko] undefined!
make[1]: *** [__modpost] Error 1
Looks like a missing EXPORT_SYMBOL. Unfortunately, the definition is here:
arch/x86_64/kernel/head.S:ENTRY(phys_base)
Do I need to go the old symtabs.c route and stick the EXPORT_SYMBOL in some
other .c file?
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