linux-kernel - Re: [zer0mem@...oo.com: [oss-security] panic at big_key

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Message-ID: <26504.1469519104@warthog.procyon.org.uk>
Date:	Tue, 26 Jul 2016 08:45:04 +0100
From:	David Howells <dhowells@...hat.com>
To:	zer0mem@...oo.com
Cc:	dhowells@...hat.com, Greg KH <gregkh@...uxfoundation.org>,
	James Morris <james.l.morris@...cle.com>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	"keyrings@...r.kernel.org" <keyrings@...r.kernel.org>,
	"linux-security-module@...r.kernel.org" 
	<linux-security-module@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [zer0mem@...oo.com: [oss-security] panic at big_key_preparse #4.7-r6/rc7 & master]

<zer0mem@...oo.com> wrote:

> If you will have no luck to repro issue, I will take a deeper look at it at
> Friday and let you know asap

Can you find out the line on which the crash happens?  Load vmlinux into gdb
and do:

	i li *0x<RIP-address-from-panic>

If it says it's in some header file somewhere in an inline function, try
decrementing the RIP value until it appears in a C file.

Thanks,
David