52 lines
1.3 KiB
Text
52 lines
1.3 KiB
Text
// Find and fix trivial use-after-free of Error objects
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//
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// Copyright (c) 2020 Virtuozzo International GmbH.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see
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// <http://www.gnu.org/licenses/>.
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//
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// How to use:
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// spatch --sp-file scripts/coccinelle/error-use-after-free.cocci \
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// --macro-file scripts/cocci-macro-file.h --in-place \
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// --no-show-diff ( FILES... | --use-gitgrep . )
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@ exists@
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identifier fn, fn2;
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expression err;
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@@
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fn(...)
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{
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<...
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(
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error_free(err);
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+ err = NULL;
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error_report_err(err);
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+ err = NULL;
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error_reportf_err(err, ...);
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+ err = NULL;
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warn_report_err(err);
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+ err = NULL;
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warn_reportf_err(err, ...);
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+ err = NULL;
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)
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... when != err = NULL
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when != exit(...)
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fn2(..., err, ...)
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...>
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}
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