linux-kernel - Re: [PATCH 2/2] trivial: Changed the printk loglevel when not able to allocate memory

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>] [day] [month] [year] [list]

Message-ID: <1305713710.11468.39.camel@e102109-lin.cambridge.arm.com>
Date:	Wed, 18 May 2011 11:15:10 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	anish singh <anish198519851985@...il.com>
Cc:	linux@....linux.org.uk, lethal@...ux-sh.org,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] trivial: Changed the printk loglevel when not able
 to allocate memory

On Wed, 2011-05-18 at 04:19 +0100, anish singh wrote:
> On Tue, May 17, 2011 at 11:13 PM, Catalin Marinas <catalin.marinas@....com> wrote:
>         On 17 May 2011 18:29, anish <anish198519851985@...il.com> wrote:
>         > When not able to allocate memory we were using KERN_INFO as
>         > log level in printk so changed to KERN_ERR
>         >  Signed-off-by: anish kumar<anish198519851985@...il.com>
>         
>         
>         Maybe KERN_WARN?
> Then shouldn't we change below case also?
> 467         ret = amba_request_regions(dev, NULL);
> 468         if (ret) {
> 469                 printk(KERN_ERR "CLCD: unable to reserve regs region\n");
> 470                 goto out;
> 
> If yes,then i will resend the patch for this also.

I think the register reserving is less likely to fail because of memory
allocations but more because of overlapping regions, in which case it
could be a programming error.

Allocating a big framebuffer is likely to fail in some memory constraint
systems but I don't consider this a kernel error. That's why I suggested
warning.

-- 
Catalin


--
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/