ACIL FM

Nama	Ukuran	Aksi
alloc	-	Open
debugfs	-	Open
atomic_as_refcounter.cocci	2.22 MB	View DL Edit
check_bq27xxx_data.cocci	3.46 MB	View DL Edit
device_attr_show.cocci	1.08 MB	View DL Edit
d_find_alias.cocci	1.28 MB	View DL Edit
err_cast.cocci	1.09 MB	View DL Edit
kfree_mismatch.cocci	5.56 MB	View DL Edit
kfree_sensitive.cocci	1.91 MB	View DL Edit
kstrdup.cocci	2.42 MB	View DL Edit
kvmalloc.cocci	6.13 MB	View DL Edit
memdup.cocci	1.33 MB	View DL Edit
memdup_user.cocci	2.58 MB	View DL Edit
platform_get_irq.cocci	1.22 MB	View DL Edit
platform_no_drv_owner.cocci	3.81 MB	View DL Edit
pm_runtime.cocci	2.37 MB	View DL Edit
resource_size.cocci	2.08 MB	View DL Edit
simple_open.cocci	1.21 MB	View DL Edit
stream_open.cocci	7.7 MB	View DL Edit
vma_pages.cocci	1.48 MB	View DL Edit

Edit file: /usr/src/kernels/5.14.0-427.31.1.el9_4.x86_64/scripts/coccinelle/api/kvmalloc.cocci

// SPDX-License-Identifier: GPL-2.0-only
///
/// Find if/else condition with kmalloc/vmalloc calls.
/// Suggest to use kvmalloc instead. Same for kvfree.
///
// Confidence: High
// Copyright: (C) 2020 Denis Efremov ISPRAS
// Options: --no-includes --include-headers
//

virtual patch
virtual report
virtual org
virtual context

@initialize:python@
@@
filter = frozenset(['kvfree'])

def relevant(p):
    return not (filter & {el.current_element for el in p})

@kvmalloc depends on !patch@
expression E, E1, size;
identifier flags;
binary operator cmp = {<=, <, ==, >, >=};
identifier x;
type T;
position p;
@@

(
* if (size cmp E1 || ...)@p {
    ...
*    E = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
*          kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
*          (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...)
    ...
  } else {
    ...
*    E = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
    ...
  }
|
* E = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
*       kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
*       (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...)
  ... when != E = E1
      when != size = E1
      when any
* if (E == NULL)@p {
    ...
*   E = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
    ...
  }
|
* T x = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
*         kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
*         (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...);
  ... when != x = E1
      when != size = E1
      when any
* if (x == NULL)@p {
    ...
*   x = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
    ...
  }
)

@kvfree depends on !patch@
expression E;
position p : script:python() { relevant(p) };
@@

* if (is_vmalloc_addr(E))@p {
    ...
*   vfree(E)
    ...
  } else {
    ... when != krealloc(E, ...)
        when any
*   \(kfree\|kzfree\)(E)
    ...
  }

@depends on patch@
expression E, E1, size, node;
binary operator cmp = {<=, <, ==, >, >=};
identifier flags, x;
type T;
@@

(
- if (size cmp E1)
-    E = kmalloc(size, flags);
- else
-    E = vmalloc(size);
+ E = kvmalloc(size, flags);
|
- if (size cmp E1)
-    E = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
- else
-    E = vmalloc(size);
+ E = kvmalloc(size, GFP_KERNEL);
|
- E = kmalloc(size, flags | __GFP_NOWARN);
- if (E == NULL)
-   E = vmalloc(size);
+ E = kvmalloc(size, flags);
|
- E = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
- if (E == NULL)
-   E = vmalloc(size);
+ E = kvmalloc(size, GFP_KERNEL);
|
- T x = kmalloc(size, flags | __GFP_NOWARN);
- if (x == NULL)
-   x = vmalloc(size);
+ T x = kvmalloc(size, flags);
|
- T x = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
- if (x == NULL)
-   x = vmalloc(size);
+ T x = kvmalloc(size, GFP_KERNEL);
|
- if (size cmp E1)
-    E = kzalloc(size, flags);
- else
-    E = vzalloc(size);
+ E = kvzalloc(size, flags);
|
- if (size cmp E1)
-    E = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
- else
-    E = vzalloc(size);
+ E = kvzalloc(size, GFP_KERNEL);
|
- E = kzalloc(size, flags | __GFP_NOWARN);
- if (E == NULL)
-   E = vzalloc(size);
+ E = kvzalloc(size, flags);
|
- E = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
- if (E == NULL)
-   E = vzalloc(size);
+ E = kvzalloc(size, GFP_KERNEL);
|
- T x = kzalloc(size, flags | __GFP_NOWARN);
- if (x == NULL)
-   x = vzalloc(size);
+ T x = kvzalloc(size, flags);
|
- T x = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
- if (x == NULL)
-   x = vzalloc(size);
+ T x = kvzalloc(size, GFP_KERNEL);
|
- if (size cmp E1)
-    E = kmalloc_node(size, flags, node);
- else
-    E = vmalloc_node(size, node);
+ E = kvmalloc_node(size, flags, node);
|
- if (size cmp E1)
-    E = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
- else
-    E = vmalloc_node(size, node);
+ E = kvmalloc_node(size, GFP_KERNEL, node);
|
- E = kmalloc_node(size, flags | __GFP_NOWARN, node);
- if (E == NULL)
-   E = vmalloc_node(size, node);
+ E = kvmalloc_node(size, flags, node);
|
- E = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
- if (E == NULL)
-   E = vmalloc_node(size, node);
+ E = kvmalloc_node(size, GFP_KERNEL, node);
|
- T x = kmalloc_node(size, flags | __GFP_NOWARN, node);
- if (x == NULL)
-   x = vmalloc_node(size, node);
+ T x = kvmalloc_node(size, flags, node);
|
- T x = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
- if (x == NULL)
-   x = vmalloc_node(size, node);
+ T x = kvmalloc_node(size, GFP_KERNEL, node);
|
- if (size cmp E1)
-    E = kvzalloc_node(size, flags, node);
- else
-    E = vzalloc_node(size, node);
+ E = kvzalloc_node(size, flags, node);
|
- if (size cmp E1)
-    E = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
- else
-    E = vzalloc_node(size, node);
+ E = kvzalloc_node(size, GFP_KERNEL, node);
|
- E = kvzalloc_node(size, flags | __GFP_NOWARN, node);
- if (E == NULL)
-   E = vzalloc_node(size, node);
+ E = kvzalloc_node(size, flags, node);
|
- E = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
- if (E == NULL)
-   E = vzalloc_node(size, node);
+ E = kvzalloc_node(size, GFP_KERNEL, node);
|
- T x = kvzalloc_node(size, flags | __GFP_NOWARN, node);
- if (x == NULL)
-   x = vzalloc_node(size, node);
+ T x = kvzalloc_node(size, flags, node);
|
- T x = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
- if (x == NULL)
-   x = vzalloc_node(size, node);
+ T x = kvzalloc_node(size, GFP_KERNEL, node);
)

@depends on patch@
expression E;
position p : script:python() { relevant(p) };
@@