From: Steven Rostedt <rostedt@goodmis.org>
To: David Miller <davem@davemloft.net>
Cc: richm@oldelvet.org.uk, 609371@bugs.debian.org,
ben@decadent.org.uk, sparclinux@vger.kernel.org,
linux-kernel@vger.kernel.org, fweisbec@gmail.com,
mingo@redhat.com,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: Re: Bug#609371: linux-image-2.6.37-trunk-sparc64: module scsi_mod: Unknown relocation: 36
Date: Mon, 17 Jan 2011 09:11:26 -0500 [thread overview]
Message-ID: <1295273486.16479.15.camel@gandalf.stny.rr.com> (raw)
In-Reply-To: <20110116.113944.48514452.davem@davemloft.net>
[ Added Mathieu on Cc, since he likes alignments ;-) ]
On Sun, 2011-01-16 at 11:39 -0800, David Miller wrote:
> From: Richard Mortimer <richm@oldelvet.org.uk>
> Date: Sun, 16 Jan 2011 14:17:49 +0000
>
> > I'm wondering if gcc is just getting better at honouring the source
> > code. The DEFINE_EVENT macros in include/trace/ftrace.h have a
> > __aligned__(4) attribute in them. Maybe that should be 8 on sparc64
> > systems.
> > The aligned 4 seems to be unchanged since include/trace/ftrace.h was
> > created in f42c85e74faa422cf0bc747ed808681145448f88 in April 2009.
>
> That needs to be at least "8" on 64-bit systems. Why is this aligned
> directive there at all?
IIRC, the problem showed up in 64-bit systems. OK, x86-64 (but of
course ;-).
The problem comes when the linker puts these sections together. We read
all the sections as one big array. If the linker puts in holes, then
this breaks the array, and the kernel crashes while reading the section.
I guess one solution is to remove the alignment at the allocation and
place it at the structure. This will mean all accesses to this structure
will need to be on an alignment.
-- Steve
next prev parent reply other threads:[~2011-01-17 14:11 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110113.155700.102679408.davem@davemloft.net>
[not found] ` <4D302B2F.7030108@oldelvet.org.uk>
[not found] ` <4D3074FE.3030707@oldelvet.org.uk>
2011-01-16 5:17 ` David Miller
2011-01-16 14:17 ` Richard Mortimer
2011-01-16 19:39 ` David Miller
2011-01-17 14:11 ` Steven Rostedt [this message]
2011-01-17 14:37 ` Bastian Blank
2011-01-17 19:35 ` Mathieu Desnoyers
2011-01-18 6:36 ` David Miller
2011-01-18 5:34 ` David Miller
2011-01-18 6:00 ` David Miller
2011-01-18 6:08 ` David Miller
2011-01-18 16:46 ` Mathieu Desnoyers
2011-01-18 17:33 ` Steven Rostedt
2011-01-18 18:16 ` Steven Rostedt
2011-01-18 18:26 ` Steven Rostedt
2011-01-18 20:13 ` Mathieu Desnoyers
2011-01-18 20:22 ` Steven Rostedt
2011-01-19 5:08 ` Mathieu Desnoyers
2011-01-19 5:16 ` David Miller
2011-01-19 15:10 ` Mathieu Desnoyers
2011-01-19 16:14 ` Sam Ravnborg
2011-01-19 16:18 ` Mathieu Desnoyers
2011-01-19 6:32 ` David Miller
2011-01-19 7:20 ` David Miller
2011-01-19 15:33 ` Mathieu Desnoyers
2011-01-19 21:40 ` David Miller
2011-01-19 22:00 ` Steven Rostedt
2011-01-19 22:09 ` David Miller
2011-01-19 22:21 ` Mathieu Desnoyers
2011-01-19 22:23 ` David Miller
2011-01-19 22:32 ` Sam Ravnborg
2011-01-19 22:34 ` Mathieu Desnoyers
2011-01-19 22:13 ` Mathieu Desnoyers
2011-01-19 22:21 ` David Miller
2011-01-19 22:33 ` Mathieu Desnoyers
2011-01-20 0:41 ` David Miller
2011-01-21 0:04 ` Mathieu Desnoyers
2011-01-21 18:06 ` Richard Mortimer
2011-01-21 18:52 ` Mathieu Desnoyers
2011-01-21 19:15 ` Mathieu Desnoyers
2011-01-21 20:14 ` Richard Mortimer
2011-01-21 20:40 ` Mathieu Desnoyers
2011-01-21 22:50 ` Richard Mortimer
2011-01-22 18:42 ` Richard Mortimer
2011-01-22 18:53 ` Mathieu Desnoyers
2011-01-19 15:46 ` Steven Rostedt
2011-01-19 16:15 ` Mathieu Desnoyers
2011-01-19 18:13 ` Steven Rostedt
2011-01-19 18:20 ` Mathieu Desnoyers
2011-01-19 21:44 ` David Miller
2011-01-19 22:15 ` Mathieu Desnoyers
2011-01-19 22:22 ` David Miller
2011-01-19 15:11 ` Mathieu Desnoyers
2011-01-19 15:27 ` Richard Mortimer
2011-01-17 6:07 ` David Miller
2011-01-17 9:05 ` Jesper Nilsson
2011-02-01 5:11 ` David Miller
2011-02-01 10:03 ` Jesper Nilsson
2011-01-17 10:22 ` Richard Mortimer
2011-01-17 14:15 ` Steven Rostedt
2011-01-18 6:35 ` David Miller
2011-01-18 17:30 ` Steven Rostedt
2011-01-17 19:46 ` R_SPARC_13 (Re: Bug#609371: linux-image-2.6.37-trunk-sparc64: module scsi_mod: Unknown relocation: 36) Richard Mortimer
2011-01-17 21:02 ` R_SPARC_13 David Miller
2011-01-17 23:34 ` R_SPARC_13 Richard Mortimer
2011-01-18 0:18 ` R_SPARC_13 David Miller
2011-01-18 0:37 ` R_SPARC_13 David Miller
2011-01-18 1:28 ` R_SPARC_13 Richard Mortimer
2011-01-18 6:50 ` R_SPARC_13 David Miller
2011-01-18 10:52 ` R_SPARC_13 Richard Mortimer
2011-01-18 13:23 ` R_SPARC_13 Richard Mortimer
2011-01-18 21:00 ` R_SPARC_13 David Miller
2011-01-19 4:12 ` R_SPARC_13 David Miller
2011-01-17 14:39 ` Bug#609371: linux-image-2.6.37-trunk-sparc64: module scsi_mod: Unknown relocation: 36 Bernhard R. Link
2011-01-18 5:24 ` David Miller
2011-01-18 9:26 ` Jesper Nilsson
2011-01-18 6:27 ` David Miller
2011-01-18 17:05 ` Steven Rostedt
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