linux/drivers/usb/storage
Kees Cook 6da2ec5605 treewide: kmalloc() -> kmalloc_array()
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This
patch replaces cases of:

        kmalloc(a * b, gfp)

with:
        kmalloc_array(a * b, gfp)

as well as handling cases of:

        kmalloc(a * b * c, gfp)

with:

        kmalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kmalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kmalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The tools/ directory was manually excluded, since it has its own
implementation of kmalloc().

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kmalloc
+ kmalloc_array
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kmalloc(sizeof(THING) * C2, ...)
|
  kmalloc(sizeof(TYPE) * C2, ...)
|
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(C1 * C2, ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
..
alauda.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
cypress_atacb.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
datafab.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
debug.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
debug.h USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
ene_ub6250.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
freecom.c usb: storage: Replace mdelay with msleep in init_freecom 2018-04-22 15:49:42 +02:00
initializers.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
initializers.h USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
isd200.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
jumpshot.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
karma.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
Kconfig PM / Kconfig: Replace PM_RUNTIME with PM in dependencies 2014-12-13 00:44:04 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
onetouch.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
option_ms.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
option_ms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
protocol.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
protocol.h USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
realtek_cr.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
scsiglue.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
scsiglue.h USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
sddr09.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
sddr55.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
shuttle_usbat.c USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
sierra_ms.c USB: move many drivers to use DEVICE_ATTR_RO 2018-01-24 08:49:52 +01:00
sierra_ms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
transport.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
transport.h USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
uas-detect.h uas: Always apply US_FL_NO_ATA_1X quirk to Seagate devices 2017-11-28 15:17:49 +01:00
uas.c usb-storage: Add support for FL_ALWAYS_SYNC flag in the UAS driver 2018-05-24 18:19:39 +02:00
unusual_alauda.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_cypress.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_datafab.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_devs.h usb-storage: Add compatibility quirk flags for G-Technologies G-Drive 2018-05-24 18:19:39 +02:00
unusual_ene_ub6250.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_freecom.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_isd200.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_jumpshot.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_karma.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_onetouch.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_realtek.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_sddr09.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_sddr55.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
unusual_uas.h usb-storage: Add compatibility quirk flags for G-Technologies G-Drive 2018-05-24 18:19:39 +02:00
unusual_usbat.h USB: storage: Remove redundant license text 2017-11-04 11:55:38 +01:00
usb.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
usb.h USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00
usual-tables.c USB: storage: remove invalid URL from drivers 2018-01-23 10:22:34 +01:00