mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-12 01:25:43 -04:00
2bd30b8dc7
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit7968778914("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commitf078d4ea82("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit10634530f7("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commitbae633a4a2("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
139 lines
3.3 KiB
Plaintext
139 lines
3.3 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-only
|
|
/// Remove casting the values returned by memory allocation functions
|
|
/// like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc.
|
|
///
|
|
//# This makes an effort to find cases of casting of values returned by
|
|
//# kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc,
|
|
//# kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes
|
|
//# the casting as it is not required. The result in the patch case may
|
|
//# need some reformatting.
|
|
//
|
|
// Confidence: High
|
|
// Copyright: (C) 2014 Himangi Saraogi
|
|
// Copyright: (C) 2017 Himanshu Jha
|
|
// Comments:
|
|
// Options: --no-includes --include-headers
|
|
//
|
|
|
|
virtual context
|
|
virtual patch
|
|
virtual org
|
|
virtual report
|
|
|
|
@m1@
|
|
identifier i;
|
|
expression e;
|
|
type T;
|
|
position p1;
|
|
@@
|
|
|
|
#define i (T@p1 *)e
|
|
|
|
@m2@
|
|
identifier i;
|
|
expression e;
|
|
type T;
|
|
position p2;
|
|
@@
|
|
|
|
#define i(...) (T@p2 *)e
|
|
|
|
@initialize:python@
|
|
@@
|
|
import re
|
|
pattern = '__'
|
|
m = re.compile(pattern)
|
|
|
|
@r1 depends on context || patch@
|
|
type T;
|
|
position p != {m1.p1,m2.p2};
|
|
@@
|
|
|
|
(T@p *)
|
|
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
|
|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
|
|
dma_alloc_coherent\|devm_kmalloc\|devm_kzalloc\|
|
|
kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|
|
|
vmalloc_node\|vzalloc_node\)(...)
|
|
|
|
//----------------------------------------------------------
|
|
// For context mode
|
|
//----------------------------------------------------------
|
|
|
|
@script:python depends on context@
|
|
t << r1.T;
|
|
@@
|
|
|
|
if m.search(t) != None:
|
|
cocci.include_match(False)
|
|
|
|
@depends on context && r1@
|
|
type r1.T;
|
|
@@
|
|
|
|
* (T *)
|
|
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
|
|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
|
|
dma_alloc_coherent\|devm_kmalloc\|devm_kzalloc\|
|
|
kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|
|
|
vmalloc_node\|vzalloc_node\)(...)
|
|
|
|
//----------------------------------------------------------
|
|
// For patch mode
|
|
//----------------------------------------------------------
|
|
|
|
@script:python depends on patch@
|
|
t << r1.T;
|
|
@@
|
|
|
|
if m.search(t) != None:
|
|
cocci.include_match(False)
|
|
|
|
@depends on patch && r1@
|
|
type r1.T;
|
|
@@
|
|
|
|
- (T *)
|
|
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
|
|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
|
|
dma_alloc_coherent\|devm_kmalloc\|devm_kzalloc\|
|
|
kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|
|
|
vmalloc_node\|vzalloc_node\)(...)
|
|
|
|
//----------------------------------------------------------
|
|
// For org and report mode
|
|
//----------------------------------------------------------
|
|
|
|
@r2 depends on org || report@
|
|
type T;
|
|
position p != {m1.p1,m2.p2};
|
|
@@
|
|
|
|
(T@p *)
|
|
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
|
|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
|
|
dma_alloc_coherent\|devm_kmalloc\|devm_kzalloc\|
|
|
kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|
|
|
vmalloc_node\|vzalloc_node\)(...)
|
|
|
|
@script:python depends on org@
|
|
p << r2.p;
|
|
t << r2.T;
|
|
@@
|
|
|
|
if m.search(t) != None:
|
|
cocci.include_match(False)
|
|
else:
|
|
coccilib.org.print_safe_todo(p[0], t)
|
|
|
|
@script:python depends on report@
|
|
p << r2.p;
|
|
t << r2.T;
|
|
@@
|
|
|
|
if m.search(t) != None:
|
|
cocci.include_match(False)
|
|
else:
|
|
msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t)
|
|
coccilib.report.print_report(p[0], msg)
|