linux/scripts/coccinelle/misc/badty.cocci
Thomas Gleixner 7f904d7e1f treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
Based on 1 normalized pattern(s):

  gplv2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 58 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081207.556988620@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:11:22 +02:00

78 lines
1.7 KiB
Plaintext

// SPDX-License-Identifier: GPL-2.0-only
/// Correct the size argument to alloc functions
///
//# This makes an effort to find cases where the argument to sizeof is wrong
//# in memory allocation functions by checking the type of the allocated memory
//# when it is a double pointer and ensuring the sizeof argument takes a pointer
//# to the the memory being allocated. There are false positives in cases the
//# sizeof argument is not used in constructing the return value. The result
//# may need some reformatting.
//
// Confidence: Moderate
// Copyright: (C) 2014 Himangi Saraogi.
// Comments:
// Options:
virtual patch
virtual context
virtual org
virtual report
//----------------------------------------------------------
// For context mode
//----------------------------------------------------------
@depends on context disable sizeof_type_expr@
type T;
T **x;
@@
x =
<+...sizeof(
* T
)...+>
//----------------------------------------------------------
// For patch mode
//----------------------------------------------------------
@depends on patch disable sizeof_type_expr@
type T;
T **x;
@@
x =
<+...sizeof(
- T
+ *x
)...+>
//----------------------------------------------------------
// For org and report mode
//----------------------------------------------------------
@r depends on (org || report) disable sizeof_type_expr@
type T;
T **x;
position p;
@@
x =
<+...sizeof(
T@p
)...+>
@script:python depends on org@
p << r.p;
@@
coccilib.org.print_todo(p[0], "WARNING sizeof argument should be pointer type, not structure type")
@script:python depends on report@
p << r.p;
@@
msg="WARNING: Use correct pointer type argument for sizeof"
coccilib.report.print_report(p[0], msg)