From: Al Viro <viro@ZenIV.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Jones <davej@redhat.com>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: 3.5-rc6 dentry related GPF
Date: Mon, 16 Jul 2012 22:32:18 +0100 [thread overview]
Message-ID: <20120716213218.GQ31729@ZenIV.linux.org.uk> (raw)
In-Reply-To: <CA+55aFz5E4NMDF+OXDoGkHz2Mr2sBXf6nYcOXomDZHmnUSdWHA@mail.gmail.com>
On Wed, Jul 11, 2012 at 12:10:12PM -0700, Linus Torvalds wrote:
> rdi = 54415541e5894855
>
> which looks like some odd corrupted ASCII to me ("UH\211\345AUAT") but
> that makes no sense either.
It makes a lot of sense as amd64 code, though:
55 push %rbp
48 89 e5 mov %rsp,%rbp
41 55 push %r13
41 54 push %r12
IOW, it's the first 8 bytes from a fairly sane beginning of some function.
So &(inode->i_fop->owner) (and thus inode->i_fop - owner is the first field)
is some spot in .text. Would be interesting to find out what function
was that from (i.e. what's the value of inode->i_fop); with any luck it
might've still been in some register. Could you post objdump of
do_dentry_open() from your kernel?
next prev parent reply other threads:[~2012-07-16 21:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-11 18:32 3.5-rc6 dentry related GPF Dave Jones
2012-07-11 19:10 ` Linus Torvalds
2012-07-11 19:18 ` Dave Jones
2012-07-16 21:32 ` Al Viro [this message]
2012-07-16 21:53 ` Dave Jones
2012-07-16 22:27 ` Al Viro
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