linux-kernel - Re: [PATCH 1/3] [v2] dmaengine: dw-edma: fix unnecessary stack usage

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 for Android: free password hash cracker in your pocket

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

Date:   Mon, 22 Jul 2019 19:51:49 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Joao Pinto <jpinto@...opsys.com>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] [v2] dmaengine: dw-edma: fix unnecessary stack usage

On 22-07-19, 14:44, Arnd Bergmann wrote:
> Putting large constant data on the stack causes unnecessary overhead
> and stack usage:
> 
> drivers/dma/dw-edma/dw-edma-v0-debugfs.c:285:6: error: stack frame size of 1376 bytes in function 'dw_edma_v0_debugfs_on' [-Werror,-Wframe-larger-than=]
> 
> Mark the variable 'static const' in order for the compiler to move it
> into the .rodata section where it does no such harm.

Applied all, thanks

Please do note the link was pointing to older rev, I have updated them
to this revision.

-- 
~Vinod