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Author SHA1 Message Date
Kees Cook 590b5b7d86 treewide: kzalloc_node() -> kcalloc_node() 
The kzalloc_node() function has a 2-factor argument form, kcalloc_node(). This
patch replaces cases of:

        kzalloc_node(a * b, gfp, node)

with:
        kcalloc_node(a * b, gfp, node)

as well as handling cases of:

        kzalloc_node(a * b * c, gfp, node)

with:

        kzalloc_node(array3_size(a, b, c), gfp, node)

as it's slightly less ugly than:

        kcalloc_node(array_size(a, b), c, gfp, node)

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

        kzalloc_node(4 * 1024, gfp, node)

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 Coccinelle script used for this was:

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

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

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

(
  kzalloc_node(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc_node(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc_node(
-	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;
@@

(
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc_node
+ kcalloc_node
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

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

- kzalloc_node
+ kcalloc_node
  (
-	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;
@@

(
  kzalloc_node(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc_node(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc_node(
-	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;
@@

(
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc_node(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc_node(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc_node(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc_node(
-	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;
@@

(
  kzalloc_node(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc_node(
-	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;
@@

(
  kzalloc_node(C1 * C2 * C3, ...)
|
  kzalloc_node(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc_node(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc_node(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc_node(
-	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;
@@

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

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Kees Cook 6396bb2215 treewide: kzalloc() -> kcalloc() 
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:

        kzalloc(a * b, gfp)

with:
        kcalloc(a * b, gfp)

as well as handling cases of:

        kzalloc(a * b * c, gfp)

with:

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

as it's slightly less ugly than:

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

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

        kzalloc(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 Coccinelle script used for this was:

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

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

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

(
  kzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	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;
@@

(
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

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

- kzalloc
+ kcalloc
  (
-	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;
@@

(
  kzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	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;
@@

(
  kzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	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;
@@

(
  kzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	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;
@@

(
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	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;
@@

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

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
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
Kees Cook 1c542f38ab mm: Introduce kvcalloc() 
The kv*alloc()-family was missing kvcalloc(). Adding this allows for
2-argument multiplication conversions of kvzalloc(a * b, ...) into
kvcalloc(a, b, ...).

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Kees Cook 9f645bcc56 video: uvesafb: Fix integer overflow in allocation 
cmap->len can get close to INT_MAX/2, allowing for an integer overflow in
allocation. This uses kmalloc_array() instead to catch the condition.

Reported-by: Dr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Fixes: 8bdb3a2d7d ("uvesafb: the driver core")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Silvio Cesare 353748a359 UBIFS: Fix potential integer overflow in allocation 
There is potential for the size and len fields in ubifs_data_node to be
too large causing either a negative value for the length fields or an
integer overflow leading to an incorrect memory allocation. Likewise,
when the len field is small, an integer underflow may occur.

Signed-off-by: Silvio Cesare <silvio.cesare@gmail.com>
Fixes: 1e51764a3c ("UBIFS: add new flash file system")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Kees Cook f3278e3f0a leds: Use struct_size() in allocation 
This case got missed by the earlier treewide struct_size() conversions.

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Matthew Wilcox 6566f907bf Convert intel uncore to struct_size 
Need to do a bit of rearranging to make this work.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Matthew Wilcox a3ac973076 Convert jffs2 acl to struct_size 
Need to tell the compiler that the acl entries follow the acl header.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Matthew Wilcox b2303d7bf7 Convert vhost to struct_size 
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Matthew Wilcox c817e6ccb2 Convert v4l2 event to struct_size 
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Matthew Wilcox 7654cb1ba7 Convert infiniband uverbs to struct_size 
The flows were hidden from the C compiler; expose them as a zero-length
array to allow struct_size to work.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Matthew Wilcox 5b572e25c3 Convert virtio_console to struct_size 
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Dan Carpenter 8958fd411b test_overflow: fix an IS_ERR() vs NULL bug 
root_device_register() returns error pointers, it never returns NULL.

Fixes: ca90800a91 ("test_overflow: Add memory allocation overflow tests")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Linus Torvalds d54d35c501 f2fs-for-4.18-rc1 
In this round, we've mainly focused on discard, aka unmap, control along with
 fstrim for Android-specific usage model. In addition, we've fixed writepage flow
 which returned EAGAIN previously resulting in EIO of fsync(2) due to mapping's
 error state. In order to avoid old MM bug [1], we decided not to use __GFP_ZERO
 for the mapping for node and meta page caches. As always, we've cleaned up many
 places for future fsverity and symbol conflicts.
 
 Enhancement:
  - do discard/fstrim in lower priority considering fs utilization
  - split large discard commands into smaller ones for better responsiveness
  - add more sanity checks to address syzbot reports
  - add a mount option, fsync_mode=nobarrier, which can reduce # of cache flushes
  - clean up symbol namespace with modified function names
  - be strict on block allocation and IO control in corner cases
 
 Bug fix:
  - don't use __GFP_ZERO for mappings
  - fix error reports in writepage to avoid fsync() failure
  - avoid selinux denial on CAP_RESOURCE on resgid/resuid
  - fix some subtle race conditions in GC/atomic writes/shutdown
  - fix overflow bugs in sanity_check_raw_super
  - fix missing bits on get_flags
 
 Clean-up:
  - prepare the generic flow for future fsverity integration
  - fix some broken coding standard
 
 [1] https://lkml.org/lkml/2018/4/8/661
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Merge tag 'f2fs-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've mainly focused on discard, aka unmap, control
  along with fstrim for Android-specific usage model. In addition, we've
  fixed writepage flow which returned EAGAIN previously resulting in EIO
  of fsync(2) due to mapping's error state. In order to avoid old MM bug
  [1], we decided not to use __GFP_ZERO for the mapping for node and
  meta page caches. As always, we've cleaned up many places for future
  fsverity and symbol conflicts.

  Enhancements:
   - do discard/fstrim in lower priority considering fs utilization
   - split large discard commands into smaller ones for better responsiveness
   - add more sanity checks to address syzbot reports
   - add a mount option, fsync_mode=nobarrier, which can reduce # of cache flushes
   - clean up symbol namespace with modified function names
   - be strict on block allocation and IO control in corner cases

  Bug fixes:
   - don't use __GFP_ZERO for mappings
   - fix error reports in writepage to avoid fsync() failure
   - avoid selinux denial on CAP_RESOURCE on resgid/resuid
   - fix some subtle race conditions in GC/atomic writes/shutdown
   - fix overflow bugs in sanity_check_raw_super
   - fix missing bits on get_flags

  Clean-ups:
   - prepare the generic flow for future fsverity integration
   - fix some broken coding standard"

[1] https://lkml.org/lkml/2018/4/8/661

* tag 'f2fs-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (79 commits)
  f2fs: fix to clear FI_VOLATILE_FILE correctly
  f2fs: let sync node IO interrupt async one
  f2fs: don't change wbc->sync_mode
  f2fs: fix to update mtime correctly
  fs: f2fs: insert space around that ':' and ', '
  fs: f2fs: add missing blank lines after declarations
  fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
  f2fs: clean up symbol namespace
  f2fs: make set_de_type() static
  f2fs: make __f2fs_write_data_pages() static
  f2fs: fix to avoid accessing cross the boundary
  f2fs: fix to let caller retry allocating block address
  disable loading f2fs module on PAGE_SIZE > 4KB
  f2fs: fix error path of move_data_page
  f2fs: don't drop dentry pages after fs shutdown
  f2fs: fix to avoid race during access gc_thread pointer
  f2fs: clean up with clear_radix_tree_dirty_tag
  f2fs: fix to don't trigger writeback during recovery
  f2fs: clear discard_wake earlier
  f2fs: let discard thread wait a little longer if dev is busy
  ...
 2018-06-11 10:16:13 -07:00
Linus Torvalds a2225d931f autofs: remove left-over autofs4 stubs 
There's no need to retain the fs/autofs4 directory for backward
compatibility.

Adding an AUTOFS4_FS fragment to the autofs Kconfig and a module alias
for autofs4 is sufficient for almost all cases. Not keeping fs/autofs4
remnants will prevent "insmod <path>/autofs4/autofs4.ko" from working
but this shouldn't be used in automation scripts rather than
modprobe(8).

There were some comments about things to look out for with the module
rename in the fs/autofs4/Kconfig that is removed by this patch, see the
commit patch if you are interested.

One potential problem with this change is that when the
fs/autofs/Kconfig fragment for AUTOFS4_FS is removed any AUTOFS4_FS
entries will be removed from the kernel config, resulting in no autofs
file system being built if there is no AUTOFS_FS entry also.

This would have also happened if the fs/autofs4 remnants had remained
and is most likely to be a problem with automated builds.

Please check your build configurations before the removal which will
occur after the next couple of kernel releases.

Acked-by: Ian Kent <raven@themaw.net>
[ With edits and commit message from Ian Kent ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-06-11 08:22:34 -07:00
Linus Torvalds 0f105cf4f6 - Core Frameworks 
- Provide helpers to enable/disable backlight
    - Provide standard and devres versions OF find helpers
 
  - New Drivers
    - Add support for the Zodiac Inflight Innovations RAVE Supervisory Processor
 
  - New Functionality
    - Allow pwm-on/pwm-off delay to be specified via DT
 
  - Bug Fixes
    - Fix ordering of the power {en,dis}able and PWM {en,dis}able signals
    - Fix Device Tree node look-up
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Merge tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Core Frameworks
   - Provide helpers to enable/disable backlight
   - Provide standard and devres versions OF find helpers

  New Drivers:
   - Add support for the Zodiac Inflight Innovations RAVE Supervisory
     Processor

  New Functionality:
   - Allow pwm-on/pwm-off delay to be specified via DT

  Bug Fixes:
   - Fix ordering of the power {en,dis}able and PWM {en,dis}able
     signals
   - Fix Device Tree node look-up"

* tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: as3711_bl: Fix Device Tree node leaks
  backlight: tps65217_bl: Fix Device Tree node lookup
  backlight: max8925_bl: Fix Device Tree node lookup
  backlight: as3711_bl: Fix Device Tree node lookup
  MAINTAINERS: Add dri-devel for backlight subsystem patches
  backlight: Nuke BL_CORE_DRIVER1
  staging: fbtft: Stop using BL_CORE_DRIVER1
  backlight: pandora: Stop using BL_CORE_DRIVER1
  backlight: generic-bl: Remove DRIVER1 state
  backlight: Nuke unused backlight.props.state states
  backlight: otm3225a: Add support for ORISE OTM3225A LCD SoC
  backlight: pwm_bl: Don't use GPIOF_* with gpiod_get_direction
  pwm-backlight: Add support for PWM delays proprieties.
  dt-bindings: pwm-backlight: Add PWM delay proprieties.
  pwm-backlight: Enable/disable the PWM before/after LCD enable toggle.
  dt-bindings: backlight: Add binding for RAVE SP backlight driver
  backlight: Add RAVE SP backlight driver
 2018-06-11 07:23:19 -07:00
Linus Torvalds 883cad5ba8 - New Device Support 
- Add support for AXP813 ADC to AXP20x
    - Add support for PM8005, PM8998 and PMI8998
 
  - New Functionality
    - Add support for Battery Power Supply to AXP813
    - Add support for SYSCON to SPARD SC27XX SPI
    - Add support for RTC to ChromeOS Embedded-Controller
 
  - Fix-ups
    - Remove unused code; exynos{4,5}-pmu, cros_ec, cros_ec_acpi_gpe
    - Remove duplicate error messages (-ENOMEM, etc); htc-i2cpld, janz-cmodio,
 		max8997, rc5t583, sm501, smsc-ece1099, abx500-core, si476x-i2c,
 		ti_am335x_tscadc, tps65090, tps6586x, tps65910, tps80031,
 		twl6030-irq, viperboard
    - Succinctly use ptr to struct in sizeof(); rc5t583, abx500-core, sm501,
 		smsc-ece1099
    - Simplify syntax for NULL ptr checking; abx500-core, sm501
    - No not unnecessarily initialise variables; tps65910, tps65910
    - Reorganise and simplify driver data; omap-usb-tll
    - Move to SPDX license statement; tps68470
    - Probe ADCs via DT; axp20x
    - Use new GPIOD API; arizona-core
    - Constify things; axp20x
    - Reduce code-size (use MACROS, etc); axp20x, omap-usb-host
    - Add DT support/docs; motorola-cpcap
    - Remove VLAs; rave-sp
    - Use devm_* managed resources; cros_ec
    - Interrogate HW for firmware version; rave-sp
    - Provide ACPI support for ChromeOS Embedded-Controller
 
  - Bug Fixes
    - Reorder ordered (enum) device list; tps65218
    - Only accept valid data from the offset; rave-sp
    - Refrain from copying junk from failed SPI read; cros_ec_dev
    - Fix potential memory leaks; pcf50633-core
    - Fix clock initialisation; twl-core
    - Fix build-issue; tps65911
    - Fix off-by-one error; tps65911
    - Fix code ordering issues; intel-lpss
    - Fix COMPILE_TEST related issues; pwm-stm32
    - Fix broken MMC card detection; asic3
    - Fix clocking related issues; intel-lpss-pci
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Merge tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Device Support:
   - Add support for AXP813 ADC to AXP20x
   - Add support for PM8005, PM8998 and PMI8998

  New Functionality:
   - Add support for Battery Power Supply to AXP813
   - Add support for SYSCON to SPARD SC27XX SPI
   - Add support for RTC to ChromeOS Embedded-Controller

  Fix-ups:
   - Remove unused code; exynos{4,5}-pmu, cros_ec, cros_ec_acpi_gpe
   - Remove duplicate error messages (-ENOMEM, etc); htc-i2cpld,
        janz-cmodio, max8997, rc5t583, sm501, smsc-ece1099, abx500-core,
        si476x-i2c, ti_am335x_tscadc, tps65090, tps6586x, tps65910,
        tps80031, twl6030-irq, viperboard
   - Succinctly use ptr to struct in sizeof(); rc5t583, abx500-core,
        sm501, smsc-ece1099
   - Simplify syntax for NULL ptr checking; abx500-core, sm501
   - No not unnecessarily initialise variables; tps65910, tps65910
   - Reorganise and simplify driver data; omap-usb-tll
   - Move to SPDX license statement; tps68470
   - Probe ADCs via DT; axp20x
   - Use new GPIOD API; arizona-core
   - Constify things; axp20x
   - Reduce code-size (use MACROS, etc); axp20x, omap-usb-host
   - Add DT support/docs; motorola-cpcap
   - Remove VLAs; rave-sp
   - Use devm_* managed resources; cros_ec
   - Interrogate HW for firmware version; rave-sp
   - Provide ACPI support for ChromeOS Embedded-Controller

  Bug Fixes:
   - Reorder ordered (enum) device list; tps65218
   - Only accept valid data from the offset; rave-sp
   - Refrain from copying junk from failed SPI read; cros_ec_dev
   - Fix potential memory leaks; pcf50633-core
   - Fix clock initialisation; twl-core
   - Fix build-issue; tps65911
   - Fix off-by-one error; tps65911
   - Fix code ordering issues; intel-lpss
   - Fix COMPILE_TEST related issues; pwm-stm32
   - Fix broken MMC card detection; asic3
   - Fix clocking related issues; intel-lpss-pci"

* tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (84 commits)
  mfd: cros_ec: Remove unused __remove function
  mfd: wm97xx-core: Platform data can be NULL
  mfd: cros_ec_dev: Don't advertise junk features on failure
  mfd: cros_ec: Use devm_kzalloc for private data
  mfd: intel-lpss: Fix Intel Cannon Lake LPSS I2C input clock
  mfd: asic3: Fix broken MMC card detection
  mfd: timberdale: Fix spelling mistake "Uknown" -> "Unknown"
  mfd: omap-usb-host: Use match_string() helper
  mfd: stm32-timers: Fix pwm-stm32 linker issue with COMPILE_TEST
  pwm: stm32: Initialize raw local variables
  mfd: arizona: Update DT doc to support more standard Reset binding
  dt-bindings: mfd: Add bindings for DA9063L
  mfd: intel-lpss: Correct names of RESETS register bits
  mfd: qcom-spmi-pmic: Add support for pm8005, pm8998 and pmi8998
  mfd: intel-lpss: Program REMAP register in PIO mode
  mfd: cros_ec_i2c: Moving the system sleep pm ops to late
  mfd: cros_ec_i2c: Add ACPI module device table
  mfd: cros_ec_dev: Register shutdown function for debugfs
  mfd: cros_ec_dev: Register cros-ec-rtc driver as a subdevice
  mfd: cros_ec: Don't try to grab log when suspended
  ...
 2018-06-11 07:20:17 -07:00
Linus Torvalds 8d08c05542 msm next, i915, vc4, v3d fixes 
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Merge tag 'drm-next-2018-06-11' of git://anongit.freedesktop.org/drm/drm

Pull drm msm updates and misc fixes from Dave Airlie:
 "I looked at Rob's msm tree, he kept it small due to being late, and it
  was in -next for a while before he was ill, so I think it should be
  fine.

  Otherwise this contains a set of i915 fixes and a v3d build fix, and
  vc4 leak fix"

* tag 'drm-next-2018-06-11' of git://anongit.freedesktop.org/drm/drm: (31 commits)
  drm/i915/icl: Don't update enabled dbuf slices struct until updated in hw
  drm/i915/icl: fix icl_unmap/map_plls_to_ports
  drm/i915: Remove bogus NV12 PLANE_COLOR_CTL setup
  drm/msm: Fix NULL deref on bind/probe deferral
  drm/msm: Switch to atomic_helper_commit()
  drm/msm: Remove msm_commit/worker, use atomic helper commit
  drm/msm: Issue queued events when disabling crtc
  drm/msm: Move implicit sync handling to prepare_fb
  drm/msm: Refactor complete_commit() to look more the helpers
  drm/msm: Don't subclass drm_atomic_state anymore
  drm/msm/mdp5: Use the new private_obj state
  drm/msm/mdp5: Add global state as a private atomic object
  drm/msm: use correct aspace pointer in msm_gem_put_iova()
  drm/msm: remove unbalanced mutex unlock
  drm/msm: don't deref error pointer in the msm_fbdev_create error path
  drm/msm/dsi: use correct enum in dsi_get_cmd_fmt
  drm/msm: Fix possible null dereference on failure of get_pages()
  drm/msm: Add modifier to mdp_get_format arguments
  drm/msm: Mark the crtc->state->event consumed
  drm/msm/dsi: implement auto PHY timing calculator for 10nm PHY
  ...
 2018-06-11 07:17:36 -07:00
Johan Hovold d5318d302e backlight: as3711_bl: Fix Device Tree node leaks 
Two framebuffer device-node names were looked up during probe, but were
only used as flags to indicate the presence of two framebuffer device.

Drop the unused framebuffer name along with a likewise unused device
pointer from the driver data, and update the platform data to pass in
booleans instead of the framebuffer strings. This allows us do drop the
node references acquired during probe, which would otherwise leak.

Note that there are no other in-kernel users of the modified
platform-data fields.

Fixes: 59eb2b5e57 ("drivers/video/backlight/as3711_bl.c: add OF support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2018-06-11 13:40:45 +01:00
Johan Hovold 2b12dfa124 backlight: tps65217_bl: Fix Device Tree node lookup 
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.

This would only cause trouble if the child node is missing while there
is an unrelated node named "backlight" elsewhere in the tree.

Cc: stable <stable@vger.kernel.org>     # 3.7
Fixes: eebfdc17cc ("backlight: Add TPS65217 WLED driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2018-06-11 13:40:39 +01:00
Johan Hovold d1cc0ec3da backlight: max8925_bl: Fix Device Tree node lookup 
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.

To make things worse, the parent mfd node was also prematurely freed,
while the child backlight node was leaked.

Cc: stable <stable@vger.kernel.org>     # 3.9
Fixes: 47ec340cb8 ("mfd: max8925: Support dt for backlight")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2018-06-11 13:40:32 +01:00
Johan Hovold 4a9c8bb2ac backlight: as3711_bl: Fix Device Tree node lookup 
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.

To make things worse, the parent mfd node was also prematurely freed.

Cc: stable <stable@vger.kernel.org>     # 3.10
Fixes: 59eb2b5e57 ("drivers/video/backlight/as3711_bl.c: add OF support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2018-06-11 13:40:20 +01:00
Arnd Bergmann 556c242045 mfd: cros_ec: Remove unused __remove function 
This function is no longer called, so we get a harmless
warning until it is removed as well:

drivers/mfd/cros_ec_dev.c:265:13: error: '__remove' defined but not used [-Werror=unused-function]

Fixes: 3aa2177e47 ("mfd: cros_ec: Use devm_kzalloc for private data")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2018-06-11 09:11:12 +01:00
Robert Jarzmik 46f107d0cb mfd: wm97xx-core: Platform data can be NULL 
It is not mandatory that platform data is passed along the ac97
codec. Actually there are configuration without a battery connected to
the ADC of the codec.

This is for example the case for the PXA zylonite platform, so fix the
NULL dereferencing by adding a test.

Fixes: a5c6951c49 ("mfd: wm97xx-core: core support for wm97xx Codec")
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2018-06-11 09:11:03 +01:00
Linus Torvalds f0dc7f9c6d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 
Pull networking fixes from David Miller:

 1) Fix several bpfilter/UMH bugs, in particular make the UMH build not
    depend upon X86 specific Kconfig symbols. From Alexei Starovoitov.

 2) Fix handling of modified context pointer in bpf verifier, from
    Daniel Borkmann.

 3) Kill regression in ifdown/ifup sequences for hv_netvsc driver, from
    Dexuan Cui.

 4) When the bonding primary member name changes, we have to re-evaluate
    the bond->force_primary setting, from Xiangning Yu.

 5) Eliminate possible padding beyone end of SKB in cdc_ncm driver, from
    Bjørn Mork.

 6) RX queue length reported for UDP sockets in procfs and socket diag
    are inaccurate, from Paolo Abeni.

 7) Fix br_fdb_find_port() locking, from Petr Machata.

 8) Limit sk_rcvlowat values properly in TCP, from Soheil Hassas
    Yeganeh.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (23 commits)
  tcp: limit sk_rcvlowat by the maximum receive buffer
  net: phy: dp83822: use BMCR_ANENABLE instead of BMSR_ANEGCAPABLE for DP83620
  socket: close race condition between sock_close() and sockfs_setattr()
  net: bridge: Fix locking in br_fdb_find_port()
  udp: fix rx queue len reported by diag and proc interface
  cdc_ncm: avoid padding beyond end of skb
  net/sched: act_simple: fix parsing of TCA_DEF_DATA
  net: fddi: fix a possible null-ptr-deref
  net: aquantia: fix unsigned numvecs comparison with less than zero
  net: stmmac: fix build failure due to missing COMMON_CLK dependency
  bpfilter: fix race in pipe access
  bpf, xdp: fix crash in xdp_umem_unaccount_pages
  xsk: Fix umem fill/completion queue mmap on 32-bit
  tools/bpf: fix selftest get_cgroup_id_user
  bpfilter: fix OUTPUT_FORMAT
  umh: fix race condition
  net: mscc: ocelot: Fix uninitialized error in ocelot_netdevice_event()
  bonding: re-evaluate force_primary when the primary slave name changes
  ip_tunnel: Fix name string concatenate in __ip_tunnel_create()
  hv_netvsc: Fix a network regression after ifdown/ifup
  ...
 2018-06-10 19:25:23 -07:00
Linus Torvalds 1aaccb5fa0 RTC for 4.18 
Subsystem:
  - rework of the rtc-test driver which allows to test the core more thoroughly
  - rtc_set_alarm() now fails early when alarms are not supported
 
 Drivers:
  - mktime is now replaced by mktime64
  - RTC range added for 88pm80x, ab-b5ze-s3, at91rm9200, brcmstb-waketimer,
    ds1685, ftrtc010, ls1x, mxc_v2, rx8581, sprd, st-lpc, tps6586x, tps65910 and
    vr41xx
  - Fixed a possible race condition in probe functions
  - pxa: fix the probe function that is broken since v4.3
  - stm32: now supports stm32mp1
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Merge tag 'rtc-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Setting the supported range from drivers for RTCs failing soon has
  started. A few fixes are developed along the way. Some drivers have
  been switched to SPDX by their maintainers.

  Subsystem:

   - rework of the rtc-test driver which allows to test the core more
     thoroughly

   - rtc_set_alarm() now fails early when alarms are not supported

  Drivers:

   - mktime() is now replaced by mktime64()

   - RTC range added for 88pm80x, ab-b5ze-s3, at91rm9200,
     brcmstb-waketimer, ds1685, ftrtc010, ls1x, mxc_v2, rx8581, sprd,
     st-lpc, tps6586x, tps65910 and vr41xx

   - fixed a possible race condition in probe functions

   - pxa: fix the probe function that is broken since v4.3

   - stm32: now supports stm32mp1"

* tag 'rtc-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (78 commits)
  rtc: pxa: fix probe function
  rtc: cros-ec: Switch to SPDX identifier.
  rtc: cros-ec: Make license text and module license match.
  rtc: ensure rtc_set_alarm fails when alarms are not supported
  rtc: test: remove alarm support from the first device
  rtc: test: convert to devm_rtc_allocate_device
  rtc: ftrtc010: let the core handle range
  rtc: ftrtc010: handle dates after 2106
  rtc: ftrtc010: switch to devm_rtc_allocate_device
  rtc: mrst: switch to devm functions
  rtc: sunxi: fix possible race condition
  rtc: test: remove irq sysfs file
  rtc: test: emulate alarms using timers
  rtc: test: store time as an offset to system time
  rtc: test: allow registering many devices
  rtc: test: remove useless proc info
  rtc: ds1685: Add range
  rtc: ds1685: fix possible race condition
  rtc: sprd: Add new RTC power down check method
  rtc: sun6i: Fix bit_idx value for clk_register_gate
  ...
 2018-06-10 16:13:24 -07:00
Linus Torvalds ab0b2e5932 This pull request contains updates for both UBI and UBIFS: 
- The UBI on-disk format header file is now dual licensed
 - New way to detect Fastmap problems during runtime
 - Bugfix for Fastmap
 - Minor updates for UBIFS (spelling, comments, vm_fault_t, ...)
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Merge tag 'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs

Pull UBI and UBIFS updates from Richard Weinberger:

 - the UBI on-disk format header file is now dual licensed

 - new way to detect Fastmap problems during runtime

 - bugfix for Fastmap

 - minor updates for UBIFS (spelling, comments, vm_fault_t, ...)

* tag 'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs:
  mtd: ubi: Update ubi-media.h to dual license
  ubi: fastmap: Detect EBA mismatches on-the-fly
  ubi: fastmap: Check each mapping only once
  ubi: fastmap: Correctly handle interrupted erasures in EBA
  ubi: fastmap: Cancel work upon detach
  ubifs: lpt: Fix wrong pnode number range in comment
  ubifs: gc: Fix typo
  ubifs: log: Some spelling fixes
  ubifs: Spelling fix someting -> something
  ubifs: journal: Remove wrong comment
  ubifs: remove set but never used variable
  ubifs, xattr: remove misguided quota flags
  fs: ubifs: Adding new return type vm_fault_t
 2018-06-10 15:52:09 -07:00
Soheil Hassas Yeganeh 867f816bad tcp: limit sk_rcvlowat by the maximum receive buffer 
The user-provided value to setsockopt(SO_RCVLOWAT) can be
larger than the maximum possible receive buffer. Such values
mute POLLIN signals on the socket which can stall progress
on the socket.

Limit the user-provided value to half of the maximum receive
buffer, i.e., half of sk_rcvbuf when the receive buffer size
is set by the user, or otherwise half of sysctl_tcp_rmem[2].

Fixes: d1361840f8 ("tcp: fix SO_RCVLOWAT and RCVBUF autotuning")
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2018-06-10 14:12:50 -07:00
Linus Torvalds 5f85942c2e SCSI misc on 20180610 
This is mostly updates to the usual drivers: ufs, qedf, mpt3sas, lpfc,
 xfcp, hisi_sas, cxlflash, qla2xxx.  In the absence of Nic, we're also
 taking target updates which are mostly minor except for the tcmu
 refactor. The only real core change to worry about is the removal of
 high page bouncing (in sas, storvsc and iscsi).  This has been well
 tested and no problems have shown up so far.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates to the usual drivers: ufs, qedf, mpt3sas, lpfc,
  xfcp, hisi_sas, cxlflash, qla2xxx.

  In the absence of Nic, we're also taking target updates which are
  mostly minor except for the tcmu refactor.

  The only real core change to worry about is the removal of high page
  bouncing (in sas, storvsc and iscsi). This has been well tested and no
  problems have shown up so far"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (268 commits)
  scsi: lpfc: update driver version to 12.0.0.4
  scsi: lpfc: Fix port initialization failure.
  scsi: lpfc: Fix 16gb hbas failing cq create.
  scsi: lpfc: Fix crash in blk_mq layer when executing modprobe -r lpfc
  scsi: lpfc: correct oversubscription of nvme io requests for an adapter
  scsi: lpfc: Fix MDS diagnostics failure (Rx < Tx)
  scsi: hisi_sas: Mark PHY as in reset for nexus reset
  scsi: hisi_sas: Fix return value when get_free_slot() failed
  scsi: hisi_sas: Terminate STP reject quickly for v2 hw
  scsi: hisi_sas: Add v2 hw force PHY function for internal ATA command
  scsi: hisi_sas: Include TMF elements in struct hisi_sas_slot
  scsi: hisi_sas: Try wait commands before before controller reset
  scsi: hisi_sas: Init disks after controller reset
  scsi: hisi_sas: Create a scsi_host_template per HW module
  scsi: hisi_sas: Reset disks when discovered
  scsi: hisi_sas: Add LED feature for v3 hw
  scsi: hisi_sas: Change common allocation mode of device id
  scsi: hisi_sas: change slot index allocation mode
  scsi: hisi_sas: Introduce hisi_sas_phy_set_linkrate()
  scsi: hisi_sas: fix a typo in hisi_sas_task_prep()
  ...
 2018-06-10 13:01:12 -07:00
Alvaro Gamez Machado b718e8c8f4 net: phy: dp83822: use BMCR_ANENABLE instead of BMSR_ANEGCAPABLE for DP83620 
DP83620 register set is compatible with the DP83848, but it also supports
100base-FX. When the hardware is configured such as that fiber mode is
enabled, autonegotiation is not possible.

The chip, however, doesn't expose this information via BMSR_ANEGCAPABLE.
Instead, this bit is always set high, even if the particular hardware
configuration makes it so that auto negotiation is not possible [1]. Under
these circumstances, the phy subsystem keeps trying for autonegotiation to
happen, without success.

Hereby, we inspect BMCR_ANENABLE bit after genphy_config_init, which on
reset is set to 0 when auto negotiation is disabled, and so we use this
value instead of BMSR_ANEGCAPABLE.

[1] https://e2e.ti.com/support/interface/ethernet/f/903/p/697165/2571170

Signed-off-by: Alvaro Gamez Machado <alvaro.gamez@hazent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2018-06-10 12:38:03 -07:00
Cong Wang 6d8c50dcb0 socket: close race condition between sock_close() and sockfs_setattr() 
fchownat() doesn't even hold refcnt of fd until it figures out
fd is really needed (otherwise is ignored) and releases it after
it resolves the path. This means sock_close() could race with
sockfs_setattr(), which leads to a NULL pointer dereference
since typically we set sock->sk to NULL in ->release().

As pointed out by Al, this is unique to sockfs. So we can fix this
in socket layer by acquiring inode_lock in sock_close() and
checking against NULL in sockfs_setattr().

sock_release() is called in many places, only the sock_close()
path matters here. And fortunately, this should not affect normal
sock_close() as it is only called when the last fd refcnt is gone.
It only affects sock_close() with a parallel sockfs_setattr() in
progress, which is not common.

Fixes: 86741ec254 ("net: core: Add a UID field to struct sock.")
Reported-by: shankarapailoor <shankarapailoor@gmail.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Lorenzo Colitti <lorenzo@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2018-06-10 12:25:53 -07:00
Linus Torvalds 0c14e43a42 one smb3 (ACL related) fix for stable, one SMB3 security enhancement (when mounting -t smb3 forbid less secure dialects), and some RDMA and compounding fixes 
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Merge tag '4.18-fixes-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:

 - one smb3 (ACL related) fix for stable

 - one SMB3 security enhancement (when mounting -t smb3 forbid less
   secure dialects)

 - some RDMA and compounding fixes

* tag '4.18-fixes-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix a buffer leak in smb2_query_symlink
  smb3: do not allow insecure cifs mounts when using smb3
  CIFS: Fix NULL ptr deref
  CIFS: fix encryption in SMB3.1.1
  CIFS: Pass page offset for encrypting
  CIFS: Pass page offset for calculating signature
  CIFS: SMBD: Support page offset in memory registration
  CIFS: SMBD: Support page offset in RDMA recv
  CIFS: SMBD: Support page offset in RDMA send
  CIFS: When sending data on socket, pass the correct page offset
  CIFS: Introduce helper function to get page offset and length in smb_rqst
  CIFS: Calculate the correct request length based on page offset and tail size
  cifs: For SMB2 security informaion query, check for minimum sized security descriptor instead of sizeof FileAllInformation class
  CIFS: Fix signing for SMB2/3
 2018-06-10 10:53:31 -07:00
Linus Torvalds bbaa101303 for-linus-20180610 
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Merge tag 'for-linus-20180610' of git://git.kernel.dk/linux-block

Pull block flush handling fix from Jens Axboe:
 "Single fix that we should merge now, fixing a regression in queuing
  flush request, accessing request flags after calling the end_request
  handler"

* tag 'for-linus-20180610' of git://git.kernel.dk/linux-block:
  block: fix use-after-free in block flush handling
 2018-06-10 10:50:41 -07:00
Linus Torvalds d82991a868 Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull restartable sequence support from Thomas Gleixner:
 "The restartable sequences syscall (finally):

  After a lot of back and forth discussion and massive delays caused by
  the speculative distraction of maintainers, the core set of
  restartable sequences has finally reached a consensus.

  It comes with the basic non disputed core implementation along with
  support for arm, powerpc and x86 and a full set of selftests

  It was exposed to linux-next earlier this week, so it does not fully
  comply with the merge window requirements, but there is really no
  point to drag it out for yet another cycle"

* 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rseq/selftests: Provide Makefile, scripts, gitignore
  rseq/selftests: Provide parametrized tests
  rseq/selftests: Provide basic percpu ops test
  rseq/selftests: Provide basic test
  rseq/selftests: Provide rseq library
  selftests/lib.mk: Introduce OVERRIDE_TARGETS
  powerpc: Wire up restartable sequences system call
  powerpc: Add syscall detection for restartable sequences
  powerpc: Add support for restartable sequences
  x86: Wire up restartable sequence system call
  x86: Add support for restartable sequences
  arm: Wire up restartable sequences system call
  arm: Add syscall detection for restartable sequences
  arm: Add restartable sequences support
  rseq: Introduce restartable sequences system call
  uapi/headers: Provide types_32_64.h
 2018-06-10 10:17:09 -07:00
Linus Torvalds f4e5b30d80 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 updates and fixes from Thomas Gleixner:

 - Fix the (late) fallout from the vector management rework causing
   hlist corruption and irq descriptor reference leaks caused by a
   missing sanity check.

   The straight forward fix triggered another long standing issue to
   surface. The pre rework code hid the issue due to being way slower,
   but now the chance that user space sees an EBUSY error return when
   updating irq affinities is way higher, though quite a bunch of
   userspace tools do not handle it properly despite the fact that EBUSY
   could be returned for at least 10 years.

   It turned out that the EBUSY return can be avoided completely by
   utilizing the existing delayed affinity update mechanism for irq
   remapped scenarios as well. That's a bit more error handling in the
   kernel, but avoids fruitless fingerpointing discussions with tool
   developers.

 - Decouple PHYSICAL_MASK from AMD SME as its going to be required for
   the upcoming Intel memory encryption support as well.

 - Handle legacy device ACPI detection properly for newer platforms

 - Fix the wrong argument ordering in the vector allocation tracepoint

 - Simplify the IDT setup code for the APIC=n case

 - Use the proper string helpers in the MTRR code

 - Remove a stale unused VDSO source file

 - Convert the microcode update lock to a raw spinlock as its used in
   atomic context.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/intel_rdt: Enable CMT and MBM on new Skylake stepping
  x86/apic/vector: Print APIC control bits in debugfs
  genirq/affinity: Defer affinity setting if irq chip is busy
  x86/platform/uv: Use apic_ack_irq()
  x86/ioapic: Use apic_ack_irq()
  irq_remapping: Use apic_ack_irq()
  x86/apic: Provide apic_ack_irq()
  genirq/migration: Avoid out of line call if pending is not set
  genirq/generic_pending: Do not lose pending affinity update
  x86/apic/vector: Prevent hlist corruption and leaks
  x86/vector: Fix the args of vector_alloc tracepoint
  x86/idt: Simplify the idt_setup_apic_and_irq_gates()
  x86/platform/uv: Remove extra parentheses
  x86/mm: Decouple dynamic __PHYSICAL_MASK from AMD SME
  x86: Mark native_set_p4d() as __always_inline
  x86/microcode: Make the late update update_lock a raw lock for RT
  x86/mtrr: Convert to use strncpy_from_user() helper
  x86/mtrr: Convert to use match_string() helper
  x86/vdso: Remove unused file
  x86/i8237: Register device based on FADT legacy boot flag
 2018-06-10 09:44:53 -07:00
Linus Torvalds a2211de0f9 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 pti updates from Thomas Gleixner:
 "Three small commits updating the SSB mitigation to take the updated
  AMD mitigation variants into account"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
  x86/bugs: Add AMD's SPEC_CTRL MSR usage
  x86/bugs: Add AMD's variant of SSB_NO
 2018-06-10 09:13:18 -07:00
Linus Torvalds 2322d6c5c7 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull more perf tooling updates from Thomas Gleixner:
 "Perf tool updates and fixes:

  perf stat:

   - Display user and system time for workload targets (Jiri Olsa)

  perf record:

   - Enable arbitrary event names thru name= modifier (Alexey Budankov)

  PowerPC:

   - Add a python script for hypervisor call statistics (Ravi Bangoria)

  Intel PT: (Adrian Hunter)

   - Fix sync_switch INTEL_PT_SS_NOT_TRACING

   - Fix decoding to accept CBR between FUP and corresponding TIP

   - Fix MTC timing after overflow

   - Fix "Unexpected indirect branch" error

  perf test:

   - record+probe_libc_inet_pton:
      - To get the symbol table for dynamic shared objects on ubuntu we
        need to pass the -D/--dynamic command line option, unlike with
        the fedora distros (Arnaldo Carvalho de Melo)

   - code-reading:
      - Fix perf_env setup for PTI entry trampolines (Adrian Hunter)

   - kmod-path:
      - Add tests for vdso32 and vdsox32 (Adrian Hunter)

   - Use header file util/debug.h (Thomas Richter)

  perf annotate:

   - Make the various UI backends (stdio, TUI, gtk) use more
     consistently structs with annotation options as specified by the
     user (Arnaldo Carvalho de Melo)

   - Move annotation specific knobs from the symbol_conf global kitchen
     sink to the annotation option structs (Arnaldo Carvalho de Melo)

  perf script:

   - Add more PMU fields to python scripts event handler dict (Jin Yao)

  Core:

   - Fix misleading error for some unparsable events mentioning PMUs
     when those are not involved in the problem (Jiri Olsa)

   - Consider BSS symbols when processing /proc/kallsyms ('B' and 'b')
     (Arnaldo Carvalho de Melo)

   - Be more robust when trying to use per-symbol histograms, checking
     for unlikely but possible cases where the space for the histograms
     wasn't allocated, print a debug message for such cases (Arnaldo
     Carvalho de Melo)

   - Fix symbol and object code resolution for vdso32 and vdsox32
     (Adrian Hunter)

   - No need to check for null when passing pointers to foo__get() style
     refcount grabbing helpers, just like in the kernel and with free(),
     its safe to pass a NULL pointer to avoid having to check it before
     each and every foo__get() call (Arnaldo Carvalho de Melo)

   - Remove some dead code (quote.[ch]) (Arnaldo Carvalho de Melo)

   - Remove some needless globals, making them local (Arnaldo Carvalho
     de Melo)

   - Reduce usage of symbol_conf.use_callchain, using other means of
     finding out if callchains are in use or available for specific
     events, as we evolved this codebase to allow requesting callchains
     for just a subset of the monitored events. In time it will help
     polish recording and showing mixed sets accross the various tools:

        perf record -e cycles/call-graph=fp/,cache-misses/call-graph=dwarf/,instructions'

     (Arnaldo Carvalho de Melo)

   - Consider PTI entry trampolines in map__rip_2objdump() (Adrian
     Hunter)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  perf script python: Add dict fields introduction to Documentation
  perf script python: Add more PMU fields to event handler dict
  perf script python: Move dsoname code to a new function
  perf symbols: Add BSS symbols when reading from /proc/kallsyms
  perf annnotate: Make __symbol__inc_addr_samples handle src->histograms == NULL
  perf intel-pt: Fix "Unexpected indirect branch" error
  perf intel-pt: Fix MTC timing after overflow
  perf intel-pt: Fix decoding to accept CBR between FUP and corresponding TIP
  perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACING
  perf script powerpc: Python script for hypervisor call statistics
  perf test record+probe_libc_inet_pton: Ask 'nm' for dynamic symbols
  perf map: Consider PTI entry trampolines in rip_2objdump()
  perf test code-reading: Fix perf_env setup for PTI entry trampolines
  perf tools: Fix pmu events parsing rule
  perf stat: Display user and system time
  perf record: Enable arbitrary event names thru name= modifier
  perf tools: Fix symbol and object code resolution for vdso32 and vdsox32
  perf tests kmod-path: Add tests for vdso32 and vdsox32
  perf hists: Check if a hist_entry has callchains before using them
  perf hists: Introduce hist_entry__has_callchain() method
  ...
 2018-06-10 09:04:00 -07:00
Linus Torvalds 9f3fbe852a Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull irq fixes from Thomas Gleixner:
 "Two small fixlets:

   - Add the missing iomu mapping call in the Freescale/NXP/Qualcomm/
     whoever owns it now/ SCFG MSI irqchip driver. Otherwise IRQs wont
     work at all.

   - Fix a SMP=n build warning in the STM32 irq chip driver"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/ls-scfg-msi: Map MSIs in the iommu
  irqchip/stm32: Fix non-SMP build warning
 2018-06-10 09:00:13 -07:00
Linus Torvalds a8a4021b77 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull core fixes from Thomas Gleixner:
 "A small set of core updates:

   - Make objtool cope with GCC8 oddities some more

   - Remove a stale local_irq_save/restore sequence in the signal code
     along with the stale comment in the RCU code. The underlying issue
     which led to this has been solved long time ago, but nobody cared
     to cleanup the hackarounds"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  signal: Remove no longer required irqsave/restore
  rcu: Update documentation of rcu_read_unlock()
  objtool: Fix GCC 8 cold subfunction detection for aliased functions
 2018-06-10 08:30:35 -07:00
Anna-Maria Gleixner 59dc6f3c6d signal: Remove no longer required irqsave/restore 
Commit a841796f11 ("signal: align __lock_task_sighand() irq disabling and
RCU") introduced a rcu read side critical section with interrupts
disabled. The changelog suggested that a better long-term fix would be "to
make rt_mutex_unlock() disable irqs when acquiring the rt_mutex structure's
->wait_lock".

This long-term fix has been made in commit b4abf91047 ("rtmutex: Make
wait_lock irq safe") for a different reason.

Therefore revert commit a841796f11 ("signal: align >
__lock_task_sighand() irq disabling and RCU") as the interrupt disable
dance is not longer required.

The change was tested on the base of b4abf91047 ("rtmutex: Make wait_lock
irq safe") with a four hour run of rcutorture scenario TREE03 with lockdep
enabled as suggested by Paul McKenney.

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: bigeasy@linutronix.de
Link: https://lkml.kernel.org/r/20180525090507.22248-3-anna-maria@linutronix.de
 2018-06-10 06:14:01 +02:00
Anna-Maria Gleixner ec84b27f9b rcu: Update documentation of rcu_read_unlock() 
Since commit b4abf91047 ("rtmutex: Make wait_lock irq safe") the
explanation in rcu_read_unlock() documentation about irq unsafe rtmutex
wait_lock is no longer valid.

Remove it to prevent kernel developers reading the documentation to rely on
it.

Suggested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: bigeasy@linutronix.de
Link: https://lkml.kernel.org/r/20180525090507.22248-2-anna-maria@linutronix.de
 2018-06-10 06:14:01 +02:00
Linus Torvalds 3ca24ce9ff Merge branch 'proc-cmdline' 
Merge proc_cmdline simplifications.

This re-writes the get_mm_cmdline() logic to be rather simpler than it
used to be, and makes the semantics for "cmdline goes past the end of
the original area" more natural.

You _can_ use prctl(PR_SET_MM) to just point your command line somewhere
else entirely, but the traditional model is to just edit things in place
and that still needs to continue to work.  At least this way the code
makes some sense.

* proc-cmdline:
  fs/proc: simplify and clarify get_mm_cmdline() function
  fs/proc: re-factor proc_pid_cmdline_read() a bit
 2018-06-09 15:31:35 -07:00
Mikulas Patocka f72328d27f hpfs: Use EUCLEAN for filesystem errors 
Use the error code EUCLEAN for filesystem errors because other
filesystems use this code too.

[ And remove unused EMEMERROR  - Linus ]

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2018-06-09 14:34:48 -07:00
Linus Torvalds a16afaf792 power supply and reset changes for the v4.18 series 
* bq27xxx: Add BQ27426 support
 * ab8500: Drop AB8540/9540 support
 * Introduced new usb_type property
 * Properly document the power-supply ABI
 * misc. cleanups and fixes
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Merge tag 'for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:
 - bq27xxx: Add BQ27426 support
 - ab8500: Drop AB8540/9540 support
 - Introduced new usb_type property
 - Properly document the power-supply ABI
 - misc. cleanups and fixes

* tag 'for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
  MAINTAINERS: add entry for LEGO MINDSTORMS EV3
  power: supply: ab8500_charger: fix spelling mistake: "faile" -> "failed"
  power: supply: axp288_fuel_gauge: Remove polling from the driver
  power: supply: axp288_fuelguage: Do not bind when the fg function is not used
  power: supply: axp288_charger: Do not bind when the charge function is not used
  power: supply: axp288_charger: Support 3500 and 4000 mA input current limit
  power: supply: s3c-adc-battery: fix driver data initialization
  power: supply: charger-manager: Verify polling interval only when polling requested
  power: supply: sysfs: Use enum to specify property
  power: supply: ab8500: Drop AB8540/9540 support
  power: supply: ab8500_fg: fix spelling mistake: "Disharge" -> "Discharge"
  power: supply: simplify getting .drvdata
  power: supply: bq27xxx: Add support for BQ27426
  gpio-poweroff: Use gpiod_set_value_cansleep
 2018-06-09 12:11:09 -07:00
Linus Torvalds 2a70ea5cda HSI changes for the 4.18 series 
* use new vm_fault_t return type
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Merge tag 'hsi-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

Pull HSI update from Sebastian Reichel:
 "Just one patch for the HSI subsystem this time: use the new vm_fault_t
  return type"

* tag 'hsi-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
  hsi: clients: Change return type to vm_fault_t
 2018-06-09 12:09:26 -07:00
Linus Torvalds 6419945e33 This time we have a good set of changes to the core framework that do some 
general cleanups, but nothing too major. The majority of the diff goes to
 two SoCs, Actions Semi and Qualcomm. A brand new driver is introduced for
 Actions Semi so it takes up some lines to add all the different types, and
 the Qualcomm diff is there because we add support for two SoCs and it's quite
 a bit of data.
 
 Otherwise the big driver updates are on TI Davinci and Amlogic platforms. And
 then the long tail of driver updates for various fixes and stuff follows
 after that.
 
 Core:
  - debugfs cleanups removing error checking and an unused provider API
  - Removal of a clk init typedef that isn't used
  - Usage of match_string() to simplify parent string name matching
  - OF clk helpers moved to their own file (linux/of_clk.h)
  - Make clk warnings more readable across kernel versions
 
 New Drivers:
  - Qualcomm SDM845 GCC and Video clk controllers
  - Qualcomm MSM8998 GCC
  - Actions Semi S900 SoC support
  - Nuvoton npcm750 microcontroller clks
  - Amlogic axg AO clock controller
 
 Removed Drivers:
  - Deprecated Rockchip clk-gate driver
 
 Updates:
  - debugfs functions stopped checking return values
  - Support for the MSIOF module clocks on Rensas R-Car M3-N
  - Support for the new Rensas RZ/G1C and R-Car E3 SoCs
  - Qualcomm GDSC, RCG, and PLL updates for clk changes in new SoCs
  - Berlin and Amlogic SPDX tagging
  - Usage of of_clk_get_parent_count() in more places
  - Proper implementation of the CDEV1/2 clocks on Tegra20
  - Allwinner H6 PRCM clock support and R40 EMAC support
  - Add critical flag to meson8b's fdiv2 as temporary fixup for ethernet
  - Round closest support for meson's mpll driver
  - Support for meson8b nand clocks and gxbb video decoder clocks
  - Mediatek mali clks
  - STM32MP1 fixes
  - Uniphier LD11/LD20 stream demux system clock
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This time we have a good set of changes to the core framework that do
  some general cleanups, but nothing too major. The majority of the diff
  goes to two SoCs, Actions Semi and Qualcomm. A brand new driver is
  introduced for Actions Semi so it takes up some lines to add all the
  different types, and the Qualcomm diff is there because we add support
  for two SoCs and it's quite a bit of data.

  Otherwise the big driver updates are on TI Davinci and Amlogic
  platforms. And then the long tail of driver updates for various fixes
  and stuff follows after that.

  Core:
   - debugfs cleanups removing error checking and an unused provider API
   - Removal of a clk init typedef that isn't used
   - Usage of match_string() to simplify parent string name matching
   - OF clk helpers moved to their own file (linux/of_clk.h)
   - Make clk warnings more readable across kernel versions

  New Drivers:
   - Qualcomm SDM845 GCC and Video clk controllers
   - Qualcomm MSM8998 GCC
   - Actions Semi S900 SoC support
   - Nuvoton npcm750 microcontroller clks
   - Amlogic axg AO clock controller

  Removed Drivers:
   - Deprecated Rockchip clk-gate driver

  Updates:
   - debugfs functions stopped checking return values
   - Support for the MSIOF module clocks on Rensas R-Car M3-N
   - Support for the new Rensas RZ/G1C and R-Car E3 SoCs
   - Qualcomm GDSC, RCG, and PLL updates for clk changes in new SoCs
   - Berlin and Amlogic SPDX tagging
   - Usage of of_clk_get_parent_count() in more places
   - Proper implementation of the CDEV1/2 clocks on Tegra20
   - Allwinner H6 PRCM clock support and R40 EMAC support
   - Add critical flag to meson8b's fdiv2 as temporary fixup for ethernet
   - Round closest support for meson's mpll driver
   - Support for meson8b nand clocks and gxbb video decoder clocks
   - Mediatek mali clks
   - STM32MP1 fixes
   - Uniphier LD11/LD20 stream demux system clock"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits)
  clk: qcom: Export clk_fabia_pll_configure()
  clk: bcm: Update and add Stingray clock entries
  dt-bindings: clk: Update Stingray binding doc
  clk-si544: Properly round requested frequency to nearest match
  clk: ingenic: jz4770: Add 150us delay after enabling VPU clock
  clk: ingenic: jz4770: Enable power of AHB1 bus after ungating VPU clock
  clk: ingenic: jz4770: Modify C1CLK clock to disable CPU clock stop on idle
  clk: ingenic: jz4770: Change OTG from custom to standard gated clock
  clk: ingenic: Support specifying "wait for clock stable" delay
  clk: ingenic: Add support for clocks whose gate bit is inverted
  clk: use match_string() helper
  clk: bcm2835: use match_string() helper
  clk: Return void from debug_init op
  clk: remove clk_debugfs_add_file()
  clk: tegra: no need to check return value of debugfs_create functions
  clk: davinci: no need to check return value of debugfs_create functions
  clk: bcm2835: no need to check return value of debugfs_create functions
  clk: no need to check return value of debugfs_create functions
  clk: imx6: add EPIT clock support
  clk: mvebu: use correct bit for 98DX3236 NAND
  ...
 2018-06-09 12:06:24 -07:00
Linus Torvalds d60dafdca4 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 
Pull MD updates from Shaohua Li:
 "A few fixes of MD for this merge window. Mostly bug fixes:

   - raid5 stripe batch fix from Amy

   - Read error handling for raid1 FailFast device from Gioh

   - raid10 recovery NULL pointer dereference fix from Guoqing

   - Support write hint for raid5 stripe cache from Mariusz

   - Fixes for device hot add/remove from Neil and Yufen

   - Improve flush bio scalability from Xiao"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  MD: fix lock contention for flush bios
  md/raid5: Assigning NULL to sh->batch_head before testing bit R5_Overlap of a stripe
  md/raid1: add error handling of read error from FailFast device
  md: fix NULL dereference of mddev->pers in remove_and_add_spares()
  raid5: copy write hint from origin bio to stripe
  md: fix two problems with setting the "re-add" device state.
  raid10: check bio in r10buf_pool_free to void NULL pointer dereference
  md: fix an error code format and remove unsed bio_sector
 2018-06-09 12:01:36 -07:00
Linus Torvalds 1329c20433 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 
Pull sparc updates from David Miller:

 - a FPE signal fix that was also merged upstream

 - privileged ADI driver from Tom Hromatka

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: fix compat siginfo ABI regression
  selftests: sparc64: char: Selftest for privileged ADI driver
  char: sparc64: Add privileged ADI driver
 2018-06-09 11:14:30 -07:00
Linus Torvalds d6c7528447 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 
Pull IDE updates from David Miller:
 "Primarily IRQ disabling avoidance changes from Sebastian Andrzej
  Siewior"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
  ide: don't enable/disable interrupts in force threaded-IRQ mode
  ide: don't disable interrupts during kmap_atomic()
  ide: Handle irq disabling consistently
  alim15x3: move irq-restore before pci_dev_put()
 2018-06-09 11:10:16 -07:00