74 lines
1.6 KiB
Plaintext
74 lines
1.6 KiB
Plaintext
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// SPDX-License-Identifier: GPL-2.0-only
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/// This semantic patch looks for kmalloc etc that are not followed by a
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/// NULL check. It only gives a report in the case where there is some
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/// error handling code later in the function, which may be helpful
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/// in determining what the error handling code for the call to kmalloc etc
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/// should be.
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///
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// Confidence: High
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// Copyright: (C) 2010 Nicolas Palix, DIKU.
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// Copyright: (C) 2010 Julia Lawall, DIKU.
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// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.
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// URL: https://coccinelle.gitlabpages.inria.fr/website
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// Comments:
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// Options: --no-includes --include-headers
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virtual context
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virtual org
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virtual report
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@withtest@
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expression x;
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position p;
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identifier f,fld;
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@@
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x@p = f(...);
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... when != x->fld
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\(x == NULL \| x != NULL\)
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@fixed depends on context && !org && !report@
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expression x,x1;
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position p1 != withtest.p;
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statement S;
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position any withtest.p;
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identifier f;
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@@
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*x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
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...
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*x1@p = f(...);
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if (!x1) S
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// ------------------------------------------------------------------------
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@rfixed depends on (org || report) && !context exists@
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expression x,x1;
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position p1 != withtest.p;
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position p2;
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statement S;
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position any withtest.p;
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identifier f;
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@@
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x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
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...
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x1@p = f@p2(...);
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if (!x1) S
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@script:python depends on org@
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p1 << rfixed.p1;
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p2 << rfixed.p2;
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@@
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cocci.print_main("alloc call",p1)
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cocci.print_secs("possible model",p2)
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@script:python depends on report@
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p1 << rfixed.p1;
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p2 << rfixed.p2;
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@@
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msg = "alloc with no test, possible model on line %s" % (p2[0].line)
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coccilib.report.print_report(p1[0],msg)
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