FM / api

/usr/src/linux-headers-5.15.0-190/scripts/coccinelle/api/

/usr/src/linux-headers-5.15.0-190/scripts/coccinelle/api

Name	Size	Mode	Actions
alloc/	-	0755	rm
debugfs/	-	0755	rm
atomic_as_refcounter.cocci	2272	0644	edit dl rm
check_bq27xxx_data.cocci	3538	0644	edit dl rm
device_attr_show.cocci	1104	0644	edit dl rm
d_find_alias.cocci	1309	0644	edit dl rm
err_cast.cocci	1114	0644	edit dl rm
kfree_mismatch.cocci	5691	0644	edit dl rm
kfree_sensitive.cocci	1951	0644	edit dl rm
kstrdup.cocci	2478	0644	edit dl rm
kvmalloc.cocci	6287	0644	edit dl rm
memdup.cocci	1367	0644	edit dl rm
memdup_user.cocci	2645	0644	edit dl rm
platform_get_irq.cocci	1248	0644	edit dl rm
platform_no_drv_owner.cocci	3902	0644	edit dl rm
pm_runtime.cocci	2428	0644	edit dl rm
resource_size.cocci	2132	0644	edit dl rm
simple_open.cocci	1244	0644	edit dl rm
stream_open.cocci	7880	0644	edit dl rm
vma_pages.cocci	1519	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/scripts/coccinelle/api/memdup_user.cocci (2645B)

virtual patch
virtual context
virtual org
virtual report

@initialize:python@
@@
filter = frozenset(['memdup_user', 'vmemdup_user'])

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

@depends on patch@
expression from,to,size;
identifier l1,l2;
position p : script:python() { relevant(p) };
@@

-  to = \(kmalloc@p\|kzalloc@p\)
-		(size,\(GFP_KERNEL\|GFP_USER\|
-		      \(GFP_KERNEL\|GFP_USER\)|__GFP_NOWARN\));
+  to = memdup_user(from,size);
   if (
-      to==NULL
+      IS_ERR(to)
                 || ...) {
   <+... when != goto l1;
-  -ENOMEM
+  PTR_ERR(to)
   ...+>
   }
-  if (copy_from_user(to, from, size) != 0) {
-    <+... when != goto l2;
-    -EFAULT
-    ...+>
-  }

@depends on patch@
expression from,to,size;
identifier l1,l2;
position p : script:python() { relevant(p) };
@@

-  to = \(kvmalloc@p\|kvzalloc@p\)(size,\(GFP_KERNEL\|GFP_USER\));
+  to = vmemdup_user(from,size);
   if (
-      to==NULL
+      IS_ERR(to)
                 || ...) {
   <+... when != goto l1;
-  -ENOMEM
+  PTR_ERR(to)
   ...+>
   }
-  if (copy_from_user(to, from, size) != 0) {
-    <+... when != goto l2;
-    -EFAULT
-    ...+>
-  }

@r depends on !patch@
expression from,to,size;
position p : script:python() { relevant(p) };
statement S1,S2;
@@

*  to = \(kmalloc@p\|kzalloc@p\)
		(size,\(GFP_KERNEL\|GFP_USER\|
		      \(GFP_KERNEL\|GFP_USER\)|__GFP_NOWARN\));
   if (to==NULL || ...) S1
   if (copy_from_user(to, from, size) != 0)
   S2

@rv depends on !patch@
expression from,to,size;
position p : script:python() { relevant(p) };
statement S1,S2;
@@

*  to = \(kvmalloc@p\|kvzalloc@p\)(size,\(GFP_KERNEL\|GFP_USER\));
   if (to==NULL || ...) S1
   if (copy_from_user(to, from, size) != 0)
   S2

@script:python depends on org@
p << r.p;
@@

coccilib.org.print_todo(p[0], "WARNING opportunity for memdup_user")

@script:python depends on report@
p << r.p;
@@

coccilib.report.print_report(p[0], "WARNING opportunity for memdup_user")

@script:python depends on org@
p << rv.p;
@@

coccilib.org.print_todo(p[0], "WARNING opportunity for vmemdup_user")

@script:python depends on report@
p << rv.p;
@@

coccilib.report.print_report(p[0], "WARNING opportunity for vmemdup_user")

// SPDX-License-Identifier: GPL-2.0-only /// Use memdup_user rather than duplicating its implementation /// This is a little bit restricted to reduce false positives /// // Confidence: High // Copyright: (C) 2010-2012 Nicolas Palix. // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. // URL: http://coccinelle.lip6.fr/ // Comments: // Options: --no-includes --include-headers virtual patch virtual context virtual org virtual report @initialize:python@ @@ filter = frozenset(['memdup_user', 'vmemdup_user']) def relevant(p): return not (filter & {el.current_element for el in p}) @depends on patch@ expression from,to,size; identifier l1,l2; position p : script:python() { relevant(p) }; @@ - to = \(kmalloc@p\|kzalloc@p\) - (size,\(GFP_KERNEL\|GFP_USER\| - \(GFP_KERNEL\|GFP_USER\)|__GFP_NOWARN\)); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } @depends on patch@ expression from,to,size; identifier l1,l2; position p : script:python() { relevant(p) }; @@ - to = \(kvmalloc@p\|kvzalloc@p\)(size,\(GFP_KERNEL\|GFP_USER\)); + to = vmemdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } @r depends on !patch@ expression from,to,size; position p : script:python() { relevant(p) }; statement S1,S2; @@ * to = \(kmalloc@p\|kzalloc@p\) (size,\(GFP_KERNEL\|GFP_USER\| \(GFP_KERNEL\|GFP_USER\)|__GFP_NOWARN\)); if (to==NULL || ...) S1 if (copy_from_user(to, from, size) != 0) S2 @rv depends on !patch@ expression from,to,size; position p : script:python() { relevant(p) }; statement S1,S2; @@ * to = \(kvmalloc@p\|kvzalloc@p\)(size,\(GFP_KERNEL\|GFP_USER\)); if (to==NULL || ...) S1 if (copy_from_user(to, from, size) != 0) S2 @script:python depends on org@ p << r.p; @@ coccilib.org.print_todo(p[0], "WARNING opportunity for memdup_user") @script:python depends on report@ p << r.p; @@ coccilib.report.print_report(p[0], "WARNING opportunity for memdup_user") @script:python depends on org@ p << rv.p; @@ coccilib.org.print_todo(p[0], "WARNING opportunity for vmemdup_user") @script:python depends on report@ p << rv.p; @@ coccilib.report.print_report(p[0], "WARNING opportunity for vmemdup_user")