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From: Markus Elfring <Markus.Elfring@web.de>
To: Julia Lawall <julia.lawall@lip6.fr>
Cc: Coccinelle <cocci@systeme.lip6.fr>
Subject: Re: [Cocci] Software analysis with SmPL around unchecked function calls
Date: Fri, 11 Oct 2019 07:11:05 +0200
Message-ID: <b76c96ca-4312-550a-3f56-a509c63faa0f@web.de> (raw)
In-Reply-To: <alpine.DEB.2.21.1910102053440.2500@hadrien>

> And what is the questionable source code place?

I find implementation details occasionally questionable where checks for variables
which provide a stored function return value are missing.
The possibility remains that also your search pattern suggestion will point
update candidates out at other places than the implementation of the mentioned
function “imx_pd_bind”.

How do you think about the following SmPL script variant?

@display@
expression x, y;
identifier f, md;
@@
*(x)->md = kmemdup(...);
 ... when != (x)->md
(((x)->md)->f
|f(..., <+... x ...+>, ...)
|(y = x)
)


Regards,
Markus
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  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-10 12:56 Markus Elfring
2019-10-10 13:13 ` Julia Lawall
2019-10-10 13:35   ` Markus Elfring
2019-10-10 13:38     ` Julia Lawall
2019-10-10 14:04       ` Markus Elfring
     [not found]         ` <alpine.DEB.2.21.1910101606420.2305@hadrien>
2019-10-10 14:15           ` Markus Elfring
     [not found]             ` <alpine.DEB.2.21.1910102053440.2500@hadrien>
2019-10-11  5:11               ` Markus Elfring [this message]
2019-10-11  6:07                 ` Julia Lawall
2019-10-11  7:03                   ` Markus Elfring
     [not found]                     ` <alpine.DEB.2.21.1910110906390.2662@hadrien>
2019-10-11  7:30                       ` Markus Elfring
2019-10-11  9:23                       ` Markus Elfring
2019-10-10 16:25       ` Markus Elfring

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