e8fa600e06
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
65 lines
1.1 KiB
Text
65 lines
1.1 KiB
Text
/// PTR_ERR should access the value just tested by IS_ERR
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//# There can be false positives in the patch case, where it is the call
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//# IS_ERR that is wrong.
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///
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// Confidence: High
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// Copyright: (C) 2012 Julia Lawall, INRIA. GPLv2.
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// Copyright: (C) 2012 Gilles Muller, INRIA. GPLv2.
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// URL: http://coccinelle.lip6.fr/
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// Comments:
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// Options: -no_includes -include_headers
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virtual patch
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virtual context
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virtual org
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virtual report
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@depends on patch@
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expression e,e1;
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@@
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(
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if (IS_ERR(e)) { ... PTR_ERR(e) ... }
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if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... }
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if (IS_ERR(e))
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{ ...
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PTR_ERR(
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- e1
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+ e
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)
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... }
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)
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@r depends on !patch@
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expression e,e1;
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position p1,p2;
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@@
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(
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if (IS_ERR(e)) { ... PTR_ERR(e) ... }
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if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... }
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*if (IS_ERR@p1(e))
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{ ...
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* PTR_ERR@p2(e1)
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... }
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)
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@script:python depends on org@
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p1 << r.p1;
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p2 << r.p2;
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@@
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cocci.print_main("inconsistent IS_ERR and PTR_ERR",p1)
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cocci.print_secs("PTR_ERR",p2)
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@script:python depends on report@
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p1 << r.p1;
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p2 << r.p2;
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@@
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msg = "inconsistent IS_ERR and PTR_ERR, PTR_ERR on line %s" % (p2[0].line)
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coccilib.report.print_report(p1[0],msg)
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