From: Daniel Jacobowitz <drow@false.org>
To: Andreas Schwab <schwab@suse.de>
Cc: David Lecomber <david@lecomber.net>, gdb <gdb@sources.redhat.com>
Subject: Re: Whacky ia64: linux_proc_xfer_partial and lseek vs pread64
Date: Sat, 11 Feb 2006 18:26:00 -0000 [thread overview]
Message-ID: <20060211182603.GA24949@nevyn.them.org> (raw)
In-Reply-To: <je8xsh2637.fsf@sykes.suse.de>
On Sat, Feb 11, 2006 at 05:49:48PM +0100, Andreas Schwab wrote:
> Daniel Jacobowitz <drow@false.org> writes:
>
> > Fascinating. That definitely seems like a kernel bug to me; why not?
>
> Looking closer, it indeed looks like a bug. With 2.6.5 this still did
> work. The problem is that fs/read_write.c:rw_verify_area rejects negative
> offsets as well, even though fs/proc/base.c:mem_read handles them fine.
Who should this be reported to? Normally I fix ptrace bugs myself, but
I can't do anything about ia64... hmm... I suppose it might manifest on
ia32 too since the kernel/user split is up at 4G. I wonder if I can
coax GDB to try to read the stack using pread.
Anyway, I don't really have time to fix it.
--
Daniel Jacobowitz
CodeSourcery
prev parent reply other threads:[~2006-02-11 18:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-10 17:15 David Lecomber
2006-02-10 17:24 ` Daniel Jacobowitz
2006-02-10 18:05 ` Andreas Schwab
2006-02-10 18:14 ` Daniel Jacobowitz
2006-02-10 19:00 ` Andreas Schwab
2006-02-10 19:06 ` Daniel Jacobowitz
2006-02-11 16:22 ` Andreas Schwab
2006-02-11 16:50 ` Andreas Schwab
2006-02-11 18:26 ` Daniel Jacobowitz [this message]
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