linux-kernel - Re: SyS symbol munging.

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Message-ID: <20130510194044.GC23014@pd.tnic>
Date:	Fri, 10 May 2013 21:40:44 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Dave Jones <davej@...hat.com>, akpm@...ux-foundation.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: SyS symbol munging.

On Fri, May 10, 2013 at 03:24:17PM -0400, Dave Jones wrote:
> On Fri, May 10, 2013 at 12:14:54PM -0700, Andrew Morton wrote:
> 
>  > [  163.953629] Call Trace:
>  > [  163.957706]  [<ffffffff812be322>] ipcget+0x182/0x380
>  > [  163.962123]  [<ffffffff810b99a5>] ?trace_hardirqs_on_caller+0x115/0x1e0
>  > [  163.966752]  [<ffffffff812c559a>] SyS_shmget+0x5a/0x60
>  > [  163.971163]  [<ffffffff812c47e0>] ? shm_close+0x140/0x140
>  > [  163.975590]  [<ffffffff812c3e60>] ? shm_release+0x50/0x50
>  > [  163.979991]  [<ffffffff812c3df0>] ? shm_get_unmapped_area+0x20/0x20
>  > [  163.984499]  [<ffffffff816caa14>] tracesys+0xdd/0xe2
>  
> This has been bugging me for a while.
> What's changing sys_shmget to SyS_shmget in that trace ? And why ?

+1.

And not only sys_shmget:

SyS_access
SyS_chdir
SyS_chown
SyS_fchownat
SyS_flock
SyS_mkdir
SyS_mkdirat
SyS_mknod
SyS_mknodat
SyS_mount

I have those in backtraces from my boot logs of randconfig kernels in
the last couple of days.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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