From: "Van Maren, Kevin" <kevin.vanmaren@unisys.com>
To: linux-ia64@vger.kernel.org
Subject: RE: [Linux-ia64] Panic in linuxrc (2.4.7)
Date: Thu, 02 Aug 2001 07:12:50 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590693005991@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590693005983@msgid-missing>
> OK, this turns out to be due to an assembler bug: the assembler fails
> to put a stop bit in front of an "alloc" instruction if the "alloc" is
> preceded by a .align directive and the directive inserts one or more
> "nop" bundles. ;-(
>
> This bug was difficult to track down because it got triggered while
> psr.ic was cleared, which means that the IP reported in the tombstone
> is all wrong and there is no easy way to find out at which address the
> real fault occurred. Well, at least the workaround is easy:
>
> --- arch/ia64/kernel/entry.S-orig Wed Aug 1 12:48:26 2001
> +++ arch/ia64/kernel/entry.S Wed Aug 1 18:05:31 2001
> @@ -687,7 +687,7 @@
> shladd in0=loc1,3,r17
> mov in1=0
> ;;
> - .align 32
> +// .align 32
> rse_clear_invalid:
> // cycle 0
> { .mii
>
> Please try again with this patch applied.
It boots fine! Thanks!!! Is there a bug-report for the gas bug?
Kevin
next prev parent reply other threads:[~2001-08-02 7:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-01 23:05 [Linux-ia64] Panic in linuxrc (2.4.7) richard offer
2001-08-01 23:15 ` David Mosberger
2001-08-01 23:16 ` Broadfoot, Ken P
2001-08-01 23:22 ` richard offer
2001-08-01 23:27 ` Van Maren, Kevin
2001-08-02 1:13 ` David Mosberger
2001-08-02 7:12 ` Van Maren, Kevin [this message]
2001-08-02 19:58 ` richard offer
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