linux-kernel - Re: [PATCH 1/2] strip generated symbols from *.ko

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 18 Dec 2008 21:13:11 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Jan Beulich <jbeulich@...ell.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] strip generated symbols from *.ko

On Tue, Dec 16, 2008 at 11:28:14AM +0000, Jan Beulich wrote:
> This patch changes the way __crc_ symbols are being resolved from
> using ld to do so to using the assembler, thus allowing these symbols
> to be marked local (the linker creates then as global ones) and hence
> allow stripping (for modules) or ignoring (for vmlinux) them. While at
> this, also strip other generated symbols during module installation.
> 
> One potentially debatable point is the handling of the flags passeed
> to gcc when translating the intermediate assembly file into an object:
> passing $(c_flags) unchanged doesn't work as gcc passes --gdwarf2 to
> gas whenever is sees any -g* option, even for -g0, and despite the
> fact that the compiler would have already produced all necessary debug
> info in the C->assembly translation phase. I took the approach of just
> filtering out all -g* options, but an alternative to such negative
> filtering might be to have a positive filter which might, in the ideal
> case allow just all the -Wa,* options to pass through.
> 
> Signed-off-by: Jan Beulich <jbeulich@...ell.com>

Both patches are encoded so I end up with "=20", "=3D" in the saved file.
Can you please resend as attachment or fix your mailer.

Thanks,
	Sam
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/