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From: Dan Carpenter <dan.carpenter@linaro.org>
To: Toomas Soome <tsoome@me.com>
Cc: smatch@vger.kernel.org
Subject: Re: the sigsegv issue with recent smatch
Date: Wed, 26 Nov 2025 15:55:16 +0300	[thread overview]
Message-ID: <aSb4tOCfEY7RG80k@stanley.mountain> (raw)
In-Reply-To: <07F8415A-02C9-4483-9A4F-9027D20D075B@me.com>

On Tue, Nov 25, 2025 at 06:27:06PM +0200, Toomas Soome wrote:
> I got a bit background for sigsegv case.
> 

Do you have a reproducer script I could try?  I think your
reading of the code is correct.  It's trying to take the
something like:

	x = frob(a, b, c, d);

and create a fake assignment:

	x = d;

And, I guess, it can't find 'd'.  But my line numbers in mdb_nv.c are
different from yours.

There seems to be an obvious fix which I have done and pushed
but I can't test it.  Could you give it a shot?
https://github.com/error27/smatch/commit/4dca0c1677879bf9a86b2311bf1ba75acfdf82ba

regards,
dan carpenter


  reply	other threads:[~2025-11-26 14:51 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-25 16:27 the sigsegv issue with recent smatch Toomas Soome
2025-11-26 12:55 ` Dan Carpenter [this message]
2025-11-26 14:58   ` Toomas Soome

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