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This is the 4.14.259 stable release

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Merge tag 'v4.14.259' into v4.14/standard/base

This is the 4.14.259 stable release

# gpg: Signature made Wed 22 Dec 2021 03:18:11 AM EST
# gpg:                using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
# gpg: Can't check signature: No public key
This commit is contained in:
Bruce Ashfield 2022-01-25 12:48:00 -05:00
commit 2a8a6e73f8
65 changed files with 576 additions and 375 deletions
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2
Makefile
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
SUBLEVEL = 258
SUBLEVEL = 259
EXTRAVERSION =
NAME = Petit Gorille

3
arch/Kconfig
View File

@ -980,4 +980,7 @@ config HAVE_ARCH_COMPILER_H
linux/compiler-*.h in order to override macro definitions that those
headers generally provide.
config ARCH_USE_MEMREMAP_PROT
bool
source "kernel/gcov/Kconfig"

44
arch/arm/Kconfig.debug
View File

@ -16,30 +16,42 @@ config ARM_PTDUMP
kernel.
If in doubt, say "N"
# RMK wants arm kernels compiled with frame pointers or stack unwinding.
# If you know what you are doing and are willing to live without stack
# traces, you can get a slightly smaller kernel by setting this option to
# n, but then RMK will have to kill you ;).
config FRAME_POINTER
bool
depends on !THUMB2_KERNEL
default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
choice
prompt "Choose kernel unwinder"
default UNWINDER_ARM if AEABI && !FUNCTION_GRAPH_TRACER
default UNWINDER_FRAME_POINTER if !AEABI || FUNCTION_GRAPH_TRACER
help
If you say N here, the resulting kernel will be slightly smaller and
faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
when a problem occurs with the kernel, the information that is
reported is severely limited.
This determines which method will be used for unwinding kernel stack
traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,
livepatch, lockdep, and more.
config ARM_UNWIND
bool "Enable stack unwinding support (EXPERIMENTAL)"
config UNWINDER_FRAME_POINTER
bool "Frame pointer unwinder"
depends on !THUMB2_KERNEL && !CC_IS_CLANG
select ARCH_WANT_FRAME_POINTERS
select FRAME_POINTER
help
This option enables the frame pointer unwinder for unwinding
kernel stack traces.
config UNWINDER_ARM
bool "ARM EABI stack unwinder"
depends on AEABI
default y
select ARM_UNWIND
help
This option enables stack unwinding support in the kernel
using the information automatically generated by the
compiler. The resulting kernel image is slightly bigger but
the performance is not affected. Currently, this feature
only works with EABI compilers. If unsure say Y.
only works with EABI compilers.
endchoice
config ARM_UNWIND
bool
config FRAME_POINTER
bool
config OLD_MCOUNT
bool

2
arch/arm/boot/dts/imx6ull-pinfunc.h
View File

@ -51,6 +51,6 @@
#define MX6ULL_PAD_CSI_DATA04__ESAI_TX_FS 0x01F4 0x0480 0x0000 0x9 0x0
#define MX6ULL_PAD_CSI_DATA05__ESAI_TX_CLK 0x01F8 0x0484 0x0000 0x9 0x0
#define MX6ULL_PAD_CSI_DATA06__ESAI_TX5_RX0 0x01FC 0x0488 0x0000 0x9 0x0
#define MX6ULL_PAD_CSI_DATA07__ESAI_T0 0x0200 0x048C 0x0000 0x9 0x0
#define MX6ULL_PAD_CSI_DATA07__ESAI_TX0 0x0200 0x048C 0x0000 0x9 0x0
#endif /* __DTS_IMX6ULL_PINFUNC_H */

2
arch/arm/boot/dts/socfpga_arria10_socdk_qspi.dts
View File

@ -23,7 +23,7 @@
flash0: n25q00@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q00aa";
compatible = "micron,mt25qu02g", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <100000000>;

2
arch/arm/boot/dts/socfpga_arria5_socdk.dts
View File

@ -131,7 +131,7 @@
flash: flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q256a";
compatible = "micron,n25q256a", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <100000000>;

2
arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
View File

@ -136,7 +136,7 @@
flash0: n25q00@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q00";
compatible = "micron,mt25qu02g", "jedec,spi-nor";
reg = <0>; /* chip select */
spi-max-frequency = <100000000>;

2
arch/arm/boot/dts/socfpga_cyclone5_sockit.dts
View File

@ -181,7 +181,7 @@
flash: flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q00";
compatible = "micron,mt25qu02g", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <100000000>;

2
arch/arm/boot/dts/socfpga_cyclone5_socrates.dts
View File

@ -87,7 +87,7 @@
flash: flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q256a";
compatible = "micron,n25q256a", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <100000000>;
m25p,fast-read;

2
arch/arm/boot/dts/socfpga_cyclone5_sodia.dts
View File

@ -128,7 +128,7 @@
flash0: n25q512a@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q512a";
compatible = "micron,n25q512a", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <100000000>;

4
arch/arm/boot/dts/socfpga_cyclone5_vining_fpga.dts
View File

@ -249,7 +249,7 @@
n25q128@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q128";
compatible = "micron,n25q128", "jedec,spi-nor";
reg = <0>; /* chip select */
spi-max-frequency = <100000000>;
m25p,fast-read;
@ -266,7 +266,7 @@
n25q00@1 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "n25q00";
compatible = "micron,mt25qu02g", "jedec,spi-nor";
reg = <1>; /* chip select */
spi-max-frequency = <100000000>;
m25p,fast-read;

35
arch/arm/mm/copypage-fa.c
View File

@ -17,26 +17,25 @@
/*
* Faraday optimised copy_user_page
*/
static void __naked
fa_copy_user_page(void *kto, const void *kfrom)
static void fa_copy_user_page(void *kto, const void *kfrom)
{
asm("\
stmfd sp!, {r4, lr} @ 2\n\
mov r2, %0 @ 1\n\
1: ldmia r1!, {r3, r4, ip, lr} @ 4\n\
stmia r0, {r3, r4, ip, lr} @ 4\n\
mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\
add r0, r0, #16 @ 1\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
stmia r0, {r3, r4, ip, lr} @ 4\n\
mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\
add r0, r0, #16 @ 1\n\
subs r2, r2, #1 @ 1\n\
int tmp;
asm volatile ("\
1: ldmia %1!, {r3, r4, ip, lr} @ 4\n\
stmia %0, {r3, r4, ip, lr} @ 4\n\
mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\
add %0, %0, #16 @ 1\n\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
stmia %0, {r3, r4, ip, lr} @ 4\n\
mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\
add %0, %0, #16 @ 1\n\
subs %2, %2, #1 @ 1\n\
bne 1b @ 1\n\
mcr p15, 0, r2, c7, c10, 4 @ 1 drain WB\n\
ldmfd sp!, {r4, pc} @ 3"
:
: "I" (PAGE_SIZE / 32));
mcr p15, 0, %2, c7, c10, 4 @ 1 drain WB"
: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
: "2" (PAGE_SIZE / 32)
: "r3", "r4", "ip", "lr");
}
void fa_copy_user_highpage(struct page *to, struct page *from,

98
arch/arm/mm/copypage-feroceon.c
View File

@ -13,58 +13,56 @@
#include <linux/init.h>
#include <linux/highmem.h>
static void __naked
feroceon_copy_user_page(void *kto, const void *kfrom)
static void feroceon_copy_user_page(void *kto, const void *kfrom)
{
asm("\
stmfd sp!, {r4-r9, lr} \n\
mov ip, %2 \n\
1: mov lr, r1 \n\
ldmia r1!, {r2 - r9} \n\
pld [lr, #32] \n\
pld [lr, #64] \n\
pld [lr, #96] \n\
pld [lr, #128] \n\
pld [lr, #160] \n\
pld [lr, #192] \n\
pld [lr, #224] \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
ldmia r1!, {r2 - r9} \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
stmia r0, {r2 - r9} \n\
subs ip, ip, #(32 * 8) \n\
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
int tmp;
asm volatile ("\
1: ldmia %1!, {r2 - r7, ip, lr} \n\
pld [%1, #0] \n\
pld [%1, #32] \n\
pld [%1, #64] \n\
pld [%1, #96] \n\
pld [%1, #128] \n\
pld [%1, #160] \n\
pld [%1, #192] \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
ldmia %1!, {r2 - r7, ip, lr} \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
stmia %0, {r2 - r7, ip, lr} \n\
subs %2, %2, #(32 * 8) \n\
mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add %0, %0, #32 \n\
bne 1b \n\
mcr p15, 0, ip, c7, c10, 4 @ drain WB\n\
ldmfd sp!, {r4-r9, pc}"
:
: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE));
mcr p15, 0, %2, c7, c10, 4 @ drain WB"
: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
: "2" (PAGE_SIZE)
: "r2", "r3", "r4", "r5", "r6", "r7", "ip", "lr");
}
void feroceon_copy_user_highpage(struct page *to, struct page *from,

19
arch/arm/mm/copypage-v4mc.c
View File

@ -40,12 +40,11 @@ static DEFINE_RAW_SPINLOCK(minicache_lock);
* instruction. If your processor does not supply this, you have to write your
* own copy_user_highpage that does the right thing.
*/
static void __naked
mc_copy_user_page(void *from, void *to)
static void mc_copy_user_page(void *from, void *to)
{
asm volatile(
"stmfd sp!, {r4, lr} @ 2\n\
mov r4, %2 @ 1\n\
int tmp;
asm volatile ("\
ldmia %0!, {r2, r3, ip, lr} @ 4\n\
1: mcr p15, 0, %1, c7, c6, 1 @ 1 invalidate D line\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
@ -55,13 +54,13 @@ mc_copy_user_page(void *from, void *to)
mcr p15, 0, %1, c7, c6, 1 @ 1 invalidate D line\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
ldmia %0!, {r2, r3, ip, lr} @ 4\n\
subs r4, r4, #1 @ 1\n\
subs %2, %2, #1 @ 1\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
ldmneia %0!, {r2, r3, ip, lr} @ 4\n\
bne 1b @ 1\n\
ldmfd sp!, {r4, pc} @ 3"
:
: "r" (from), "r" (to), "I" (PAGE_SIZE / 64));
bne 1b @ "
: "+&r" (from), "+&r" (to), "=&r" (tmp)
: "2" (PAGE_SIZE / 64)
: "r2", "r3", "ip", "lr");
}
void v4_mc_copy_user_highpage(struct page *to, struct page *from,

41
arch/arm/mm/copypage-v4wb.c
View File

@ -22,29 +22,28 @@
* instruction. If your processor does not supply this, you have to write your
* own copy_user_highpage that does the right thing.
*/
static void __naked
v4wb_copy_user_page(void *kto, const void *kfrom)
static void v4wb_copy_user_page(void *kto, const void *kfrom)
{
asm("\
stmfd sp!, {r4, lr} @ 2\n\
mov r2, %2 @ 1\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmia r1!, {r3, r4, ip, lr} @ 4+1\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
subs r2, r2, #1 @ 1\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmneia r1!, {r3, r4, ip, lr} @ 4\n\
int tmp;
asm volatile ("\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
1: mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmia %1!, {r3, r4, ip, lr} @ 4+1\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
subs %2, %2, #1 @ 1\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmneia %1!, {r3, r4, ip, lr} @ 4\n\
bne 1b @ 1\n\
mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB\n\
ldmfd sp!, {r4, pc} @ 3"
:
: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64));
mcr p15, 0, %1, c7, c10, 4 @ 1 drain WB"
: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
: "2" (PAGE_SIZE / 64)
: "r3", "r4", "ip", "lr");
}
void v4wb_copy_user_highpage(struct page *to, struct page *from,

37
arch/arm/mm/copypage-v4wt.c
View File

@ -20,27 +20,26 @@
* dirty data in the cache. However, we do have to ensure that
* subsequent reads are up to date.
*/
static void __naked
v4wt_copy_user_page(void *kto, const void *kfrom)
static void v4wt_copy_user_page(void *kto, const void *kfrom)
{
asm("\
stmfd sp!, {r4, lr} @ 2\n\
mov r2, %2 @ 1\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
1: stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmia r1!, {r3, r4, ip, lr} @ 4+1\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmia r1!, {r3, r4, ip, lr} @ 4\n\
subs r2, r2, #1 @ 1\n\
stmia r0!, {r3, r4, ip, lr} @ 4\n\
ldmneia r1!, {r3, r4, ip, lr} @ 4\n\
int tmp;
asm volatile ("\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
1: stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmia %1!, {r3, r4, ip, lr} @ 4+1\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmia %1!, {r3, r4, ip, lr} @ 4\n\
subs %2, %2, #1 @ 1\n\
stmia %0!, {r3, r4, ip, lr} @ 4\n\
ldmneia %1!, {r3, r4, ip, lr} @ 4\n\
bne 1b @ 1\n\
mcr p15, 0, r2, c7, c7, 0 @ flush ID cache\n\
ldmfd sp!, {r4, pc} @ 3"
:
: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64));
mcr p15, 0, %2, c7, c7, 0 @ flush ID cache"
: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
: "2" (PAGE_SIZE / 64)
: "r3", "r4", "ip", "lr");
}
void v4wt_copy_user_highpage(struct page *to, struct page *from,

71
arch/arm/mm/copypage-xsc3.c
View File

@ -21,53 +21,46 @@
/*
* XSC3 optimised copy_user_highpage
* r0 = destination
* r1 = source
*
* The source page may have some clean entries in the cache already, but we
* can safely ignore them - break_cow() will flush them out of the cache
* if we eventually end up using our copied page.
*
*/
static void __naked
xsc3_mc_copy_user_page(void *kto, const void *kfrom)
static void xsc3_mc_copy_user_page(void *kto, const void *kfrom)
{
asm("\
stmfd sp!, {r4, r5, lr} \n\
mov lr, %2 \n\
int tmp;
asm volatile ("\
pld [%1, #0] \n\
pld [%1, #32] \n\
1: pld [%1, #64] \n\
pld [%1, #96] \n\
\n\
pld [r1, #0] \n\
pld [r1, #32] \n\
1: pld [r1, #64] \n\
pld [r1, #96] \n\
\n\
2: ldrd r2, [r1], #8 \n\
mov ip, r0 \n\
ldrd r4, [r1], #8 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate\n\
strd r2, [r0], #8 \n\
ldrd r2, [r1], #8 \n\
strd r4, [r0], #8 \n\
ldrd r4, [r1], #8 \n\
strd r2, [r0], #8 \n\
strd r4, [r0], #8 \n\
ldrd r2, [r1], #8 \n\
mov ip, r0 \n\
ldrd r4, [r1], #8 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate\n\
strd r2, [r0], #8 \n\
ldrd r2, [r1], #8 \n\
subs lr, lr, #1 \n\
strd r4, [r0], #8 \n\
ldrd r4, [r1], #8 \n\
strd r2, [r0], #8 \n\
strd r4, [r0], #8 \n\
2: ldrd r2, [%1], #8 \n\
ldrd r4, [%1], #8 \n\
mcr p15, 0, %0, c7, c6, 1 @ invalidate\n\
strd r2, [%0], #8 \n\
ldrd r2, [%1], #8 \n\
strd r4, [%0], #8 \n\
ldrd r4, [%1], #8 \n\
strd r2, [%0], #8 \n\
strd r4, [%0], #8 \n\
ldrd r2, [%1], #8 \n\
ldrd r4, [%1], #8 \n\
mcr p15, 0, %0, c7, c6, 1 @ invalidate\n\
strd r2, [%0], #8 \n\
ldrd r2, [%1], #8 \n\
subs %2, %2, #1 \n\
strd r4, [%0], #8 \n\
ldrd r4, [%1], #8 \n\
strd r2, [%0], #8 \n\
strd r4, [%0], #8 \n\
bgt 1b \n\
beq 2b \n\
\n\
ldmfd sp!, {r4, r5, pc}"
:
: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64 - 1));
beq 2b "
: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
: "2" (PAGE_SIZE / 64 - 1)
: "r2", "r3", "r4", "r5");
}
void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
@ -85,8 +78,6 @@ void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
/*
* XScale optimised clear_user_page
* r0 = destination
* r1 = virtual user address of ultimate destination page
*/
void xsc3_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
{

71
arch/arm/mm/copypage-xscale.c
View File

@ -36,52 +36,51 @@ static DEFINE_RAW_SPINLOCK(minicache_lock);
* Dcache aliasing issue. The writes will be forwarded to the write buffer,
* and merged as appropriate.
*/
static void __naked
mc_copy_user_page(void *from, void *to)
static void mc_copy_user_page(void *from, void *to)
{
int tmp;
/*
* Strangely enough, best performance is achieved
* when prefetching destination as well. (NP)
*/
asm volatile(
"stmfd sp!, {r4, r5, lr} \n\
mov lr, %2 \n\
pld [r0, #0] \n\
pld [r0, #32] \n\
pld [r1, #0] \n\
pld [r1, #32] \n\
1: pld [r0, #64] \n\
pld [r0, #96] \n\
pld [r1, #64] \n\
pld [r1, #96] \n\
2: ldrd r2, [r0], #8 \n\
ldrd r4, [r0], #8 \n\
mov ip, r1 \n\
strd r2, [r1], #8 \n\
ldrd r2, [r0], #8 \n\
strd r4, [r1], #8 \n\
ldrd r4, [r0], #8 \n\
strd r2, [r1], #8 \n\
strd r4, [r1], #8 \n\
asm volatile ("\
pld [%0, #0] \n\
pld [%0, #32] \n\
pld [%1, #0] \n\
pld [%1, #32] \n\
1: pld [%0, #64] \n\
pld [%0, #96] \n\
pld [%1, #64] \n\
pld [%1, #96] \n\
2: ldrd r2, [%0], #8 \n\
ldrd r4, [%0], #8 \n\
mov ip, %1 \n\
strd r2, [%1], #8 \n\
ldrd r2, [%0], #8 \n\
strd r4, [%1], #8 \n\
ldrd r4, [%0], #8 \n\
strd r2, [%1], #8 \n\
strd r4, [%1], #8 \n\
mcr p15, 0, ip, c7, c10, 1 @ clean D line\n\
ldrd r2, [r0], #8 \n\
ldrd r2, [%0], #8 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line\n\
ldrd r4, [r0], #8 \n\
mov ip, r1 \n\
strd r2, [r1], #8 \n\
ldrd r2, [r0], #8 \n\
strd r4, [r1], #8 \n\
ldrd r4, [r0], #8 \n\
strd r2, [r1], #8 \n\
strd r4, [r1], #8 \n\
ldrd r4, [%0], #8 \n\
mov ip, %1 \n\
strd r2, [%1], #8 \n\
ldrd r2, [%0], #8 \n\
strd r4, [%1], #8 \n\
ldrd r4, [%0], #8 \n\
strd r2, [%1], #8 \n\
strd r4, [%1], #8 \n\
mcr p15, 0, ip, c7, c10, 1 @ clean D line\n\
subs lr, lr, #1 \n\
subs %2, %2, #1 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line\n\
bgt 1b \n\
beq 2b \n\
ldmfd sp!, {r4, r5, pc} "
:
: "r" (from), "r" (to), "I" (PAGE_SIZE / 64 - 1));
beq 2b "
: "+&r" (from), "+&r" (to), "=&r" (tmp)
: "2" (PAGE_SIZE / 64 - 1)
: "r2", "r3", "r4", "r5", "ip");
}
void xscale_mc_copy_user_highpage(struct page *to, struct page *from,

6
arch/x86/Kconfig
View File

@ -1449,6 +1449,7 @@ config ARCH_HAS_MEM_ENCRYPT
config AMD_MEM_ENCRYPT
bool "AMD Secure Memory Encryption (SME) support"
depends on X86_64 && CPU_SUP_AMD
select ARCH_USE_MEMREMAP_PROT
---help---
Say yes to enable support for the encryption of system memory.
This requires an AMD processor that supports Secure Memory
@ -1467,10 +1468,6 @@ config AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT
If set to N, then the encryption of system memory can be
activated with the mem_encrypt=on command line option.
config ARCH_USE_MEMREMAP_PROT
def_bool y
depends on AMD_MEM_ENCRYPT
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support"
@ -1903,6 +1900,7 @@ config EFI
depends on ACPI
select UCS2_STRING
select EFI_RUNTIME_WRAPPERS
select ARCH_USE_MEMREMAP_PROT
---help---
This enables the kernel to use EFI runtime services that are
available (such as the EFI variable services).

4
arch/x86/mm/ioremap.c
View File

@ -626,7 +626,7 @@ bool phys_mem_access_encrypted(unsigned long phys_addr, unsigned long size)
return arch_memremap_can_ram_remap(phys_addr, size, 0);
}
#ifdef CONFIG_ARCH_USE_MEMREMAP_PROT
#ifdef CONFIG_AMD_MEM_ENCRYPT
/* Remap memory with encryption */
void __init *early_memremap_encrypted(resource_size_t phys_addr,
unsigned long size)
@ -668,7 +668,7 @@ void __init *early_memremap_decrypted_wp(resource_size_t phys_addr,
return early_memremap_prot(phys_addr, size, __PAGE_KERNEL_NOENC_WP);
}
#endif /* CONFIG_ARCH_USE_MEMREMAP_PROT */
#endif /* CONFIG_AMD_MEM_ENCRYPT */
static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss;

3
arch/x86/platform/efi/quirks.c
View File

@ -276,7 +276,8 @@ void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size)
return;
}
new = early_memremap(new_phys, new_size);
new = early_memremap_prot(new_phys, new_size,
pgprot_val(pgprot_encrypted(FIXMAP_PAGE_NORMAL)));
if (!new) {
pr_err("Failed to map new boot services memmap\n");
return;

15
drivers/ata/libata-scsi.c
View File

@ -3182,8 +3182,19 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
goto invalid_fld;
}
if (ata_is_ncq(tf->protocol) && (cdb[2 + cdb_offset] & 0x3) == 0)
tf->protocol = ATA_PROT_NCQ_NODATA;
if ((cdb[2 + cdb_offset] & 0x3) == 0) {
/*
* When T_LENGTH is zero (No data is transferred), dir should
* be DMA_NONE.
*/
if (scmd->sc_data_direction != DMA_NONE) {
fp = 2 + cdb_offset;
goto invalid_fld;
}
if (ata_is_ncq(tf->protocol))
tf->protocol = ATA_PROT_NCQ_NODATA;
}
/* enable LBA */
tf->flags |= ATA_TFLAG_LBA;

15
drivers/block/xen-blkfront.c
View File

@ -1566,9 +1566,12 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
unsigned long flags;
struct blkfront_ring_info *rinfo = (struct blkfront_ring_info *)dev_id;
struct blkfront_info *info = rinfo->dev_info;
unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
if (unlikely(info->connected != BLKIF_STATE_CONNECTED))
if (unlikely(info->connected != BLKIF_STATE_CONNECTED)) {
xen_irq_lateeoi(irq, XEN_EOI_FLAG_SPURIOUS);
return IRQ_HANDLED;
}
spin_lock_irqsave(&rinfo->ring_lock, flags);
again:
@ -1584,6 +1587,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
unsigned long id;
unsigned int op;
eoiflag = 0;
RING_COPY_RESPONSE(&rinfo->ring, i, &bret);
id = bret.id;
@ -1699,6 +1704,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
spin_unlock_irqrestore(&rinfo->ring_lock, flags);
xen_irq_lateeoi(irq, eoiflag);
return IRQ_HANDLED;
err:
@ -1706,6 +1713,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
spin_unlock_irqrestore(&rinfo->ring_lock, flags);
/* No EOI in order to avoid further interrupts. */
pr_alert("%s disabled for further use\n", info->gd->disk_name);
return IRQ_HANDLED;
}
@ -1745,8 +1754,8 @@ static int setup_blkring(struct xenbus_device *dev,
if (err)
goto fail;
err = bind_evtchn_to_irqhandler(rinfo->evtchn, blkif_interrupt, 0,
"blkif", rinfo);
err = bind_evtchn_to_irqhandler_lateeoi(rinfo->evtchn, blkif_interrupt,
0, "blkif", rinfo);
if (err <= 0) {
xenbus_dev_fatal(dev, err,
"bind_evtchn_to_irqhandler failed");

6
drivers/char/agp/parisc-agp.c
View File

@ -285,7 +285,7 @@ agp_ioc_init(void __iomem *ioc_regs)
return 0;
}
static int
static int __init
lba_find_capability(int cap)
{
struct _parisc_agp_info *info = &parisc_agp_info;
@ -370,7 +370,7 @@ fail:
return error;
}
static int
static int __init
find_quicksilver(struct device *dev, void *data)
{
struct parisc_device **lba = data;
@ -382,7 +382,7 @@ find_quicksilver(struct device *dev, void *data)
return 0;
}
static int
static int __init
parisc_agp_init(void)
{
extern struct sba_device *sba_list;

2
drivers/dma/st_fdma.c
View File

@ -886,4 +886,4 @@ MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("STMicroelectronics FDMA engine driver");
MODULE_AUTHOR("Ludovic.barre <Ludovic.barre@st.com>");
MODULE_AUTHOR("Peter Griffin <peter.griffin@linaro.org>");
MODULE_ALIAS("platform: " DRIVER_NAME);
MODULE_ALIAS("platform:" DRIVER_NAME);

10
drivers/firmware/scpi_pm_domain.c
View File

@ -27,7 +27,6 @@ struct scpi_pm_domain {
struct generic_pm_domain genpd;
struct scpi_ops *ops;
u32 domain;
char name[30];
};
/*
@ -121,8 +120,13 @@ static int scpi_pm_domain_probe(struct platform_device *pdev)
scpi_pd->domain = i;
scpi_pd->ops = scpi_ops;
sprintf(scpi_pd->name, "%s.%d", np->name, i);
scpi_pd->genpd.name = scpi_pd->name;
scpi_pd->genpd.name = devm_kasprintf(dev, GFP_KERNEL,
"%s.%d", np->name, i);
if (!scpi_pd->genpd.name) {
dev_err(dev, "Failed to allocate genpd name:%s.%d\n",
np->name, i);
continue;
}
scpi_pd->genpd.power_off = scpi_pd_power_off;
scpi_pd->genpd.power_on = scpi_pd_power_on;

2
drivers/gpu/drm/msm/dsi/dsi_host.c
View File

@ -1563,6 +1563,8 @@ static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host,
if (!prop) {
dev_dbg(dev,
"failed to find data lane mapping, using default\n");
/* Set the number of date lanes to 4 by default. */
msm_host->num_data_lanes = 4;
return 0;
}

7
drivers/hwmon/dell-smm-hwmon.c
View File

@ -578,15 +578,18 @@ static const struct file_operations i8k_fops = {
.unlocked_ioctl = i8k_ioctl,
};
static struct proc_dir_entry *entry;
static void __init i8k_init_procfs(void)
{
/* Register the proc entry */
proc_create("i8k", 0, NULL, &i8k_fops);
entry = proc_create("i8k", 0, NULL, &i8k_fops);
}
static void __exit i8k_exit_procfs(void)
{
remove_proc_entry("i8k", NULL);
if (entry)
remove_proc_entry("i8k", NULL);
}
#else

4
drivers/i2c/busses/i2c-rk3x.c
View File

@ -424,8 +424,8 @@ static void rk3x_i2c_handle_read(struct rk3x_i2c *i2c, unsigned int ipd)
if (!(ipd & REG_INT_MBRF))
return;
/* ack interrupt */
i2c_writel(i2c, REG_INT_MBRF, REG_IPD);
/* ack interrupt (read also produces a spurious START flag, clear it too) */
i2c_writel(i2c, REG_INT_MBRF | REG_INT_START, REG_IPD);
/* Can only handle a maximum of 32 bytes at a time */
if (len > 32)

18
drivers/input/touchscreen/of_touchscreen.c
View File

@ -79,8 +79,8 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-x",
input_abs_get_max(input,
axis) + 1,
&maximum) |
touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
&maximum);
data_present |= touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
input_abs_get_fuzz(input, axis),
&fuzz);
if (data_present)
@ -90,8 +90,8 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-y",
input_abs_get_max(input,
axis) + 1,
&maximum) |
touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
&maximum);
data_present |= touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
input_abs_get_fuzz(input, axis),
&fuzz);
if (data_present)
@ -101,11 +101,11 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
data_present = touchscreen_get_prop_u32(dev,
"touchscreen-max-pressure",
input_abs_get_max(input, axis),
&maximum) |
touchscreen_get_prop_u32(dev,
"touchscreen-fuzz-pressure",
input_abs_get_fuzz(input, axis),
&fuzz);
&maximum);
data_present |= touchscreen_get_prop_u32(dev,
"touchscreen-fuzz-pressure",
input_abs_get_fuzz(input, axis),
&fuzz);
if (data_present)
touchscreen_set_params(input, axis, maximum, fuzz);

2
drivers/md/persistent-data/dm-btree-remove.c
View File

@ -423,9 +423,9 @@ static int rebalance_children(struct shadow_spine *s,
memcpy(n, dm_block_data(child),
dm_bm_block_size(dm_tm_get_bm(info->tm)));
dm_tm_unlock(info->tm, child);
dm_tm_dec(info->tm, dm_block_location(child));
dm_tm_unlock(info->tm, child);
return 0;
}

5
drivers/net/ethernet/broadcom/bcmsysport.c
View File

@ -120,9 +120,13 @@ static inline void tdma_port_write_desc_addr(struct bcm_sysport_priv *priv,
struct dma_desc *desc,
unsigned int port)
{
unsigned long desc_flags;
/* Ports are latched, so write upper address first */
spin_lock_irqsave(&priv->desc_lock, desc_flags);
tdma_writel(priv, desc->addr_status_len, TDMA_WRITE_PORT_HI(port));
tdma_writel(priv, desc->addr_lo, TDMA_WRITE_PORT_LO(port));
spin_unlock_irqrestore(&priv->desc_lock, desc_flags);
}
/* Ethtool operations */
@ -1880,6 +1884,7 @@ static int bcm_sysport_open(struct net_device *dev)
}
/* Initialize both hardware and software ring */
spin_lock_init(&priv->desc_lock);
for (i = 0; i < dev->num_tx_queues; i++) {
ret = bcm_sysport_init_tx_ring(priv, i);
if (ret) {

1
drivers/net/ethernet/broadcom/bcmsysport.h
View File

@ -733,6 +733,7 @@ struct bcm_sysport_priv {
int wol_irq;
/* Transmit rings */
spinlock_t desc_lock;
struct bcm_sysport_tx_ring *tx_rings;
/* Receive queue */

1
drivers/net/ethernet/intel/igbvf/netdev.c
View File

@ -2911,6 +2911,7 @@ static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return 0;
err_hw_init:
netif_napi_del(&adapter->rx_ring->napi);
kfree(adapter->tx_ring);
kfree(adapter->rx_ring);
err_sw_init:

3
drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
View File

@ -3397,6 +3397,9 @@ static s32 ixgbe_reset_hw_X550em(struct ixgbe_hw *hw)
/* flush pending Tx transactions */
ixgbe_clear_tx_pending(hw);
/* set MDIO speed before talking to the PHY in case it's the 1st time */
ixgbe_set_mdio_speed(hw);
/* PHY ops must be identified and initialized prior to reset */
/* Identify PHY and related function pointers */

6
drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
View File

@ -649,7 +649,7 @@ void __init mlx4_en_init_ptys2ethtool_map(void)
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_1000BASE_T, SPEED_1000,
ETHTOOL_LINK_MODE_1000baseT_Full_BIT);
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_1000BASE_CX_SGMII, SPEED_1000,
ETHTOOL_LINK_MODE_1000baseKX_Full_BIT);
ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_1000BASE_KX, SPEED_1000,
ETHTOOL_LINK_MODE_1000baseKX_Full_BIT);
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_T, SPEED_10000,
@ -661,9 +661,9 @@ void __init mlx4_en_init_ptys2ethtool_map(void)
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_KR, SPEED_10000,
ETHTOOL_LINK_MODE_10000baseKR_Full_BIT);
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_CR, SPEED_10000,
ETHTOOL_LINK_MODE_10000baseKR_Full_BIT);
ETHTOOL_LINK_MODE_10000baseCR_Full_BIT);
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_10GBASE_SR, SPEED_10000,
ETHTOOL_LINK_MODE_10000baseKR_Full_BIT);
ETHTOOL_LINK_MODE_10000baseSR_Full_BIT);
MLX4_BUILD_PTYS2ETHTOOL_CONFIG(MLX4_20GBASE_KR2, SPEED_20000,
ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT,
ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT);

6
drivers/net/usb/lan78xx.c
View File

@ -920,11 +920,9 @@ static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
if (ret == 0) {
if (sig == OTP_INDICATOR_1)
offset = offset;
else if (sig == OTP_INDICATOR_2)
if (sig == OTP_INDICATOR_2)
offset += 0x100;
else
else if (sig != OTP_INDICATOR_1)
ret = -EINVAL;
if (!ret)
ret = lan78xx_read_raw_otp(dev, offset, length, data);

4
drivers/net/wireless/marvell/mwifiex/cmdevt.c
View File

@ -323,9 +323,9 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
adapter->seq_num++;
sleep_cfm_buf->seq_num =
cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
(adapter->seq_num, priv->bss_num,
priv->bss_type)));
priv->bss_type));
mwifiex_dbg(adapter, CMD,
"cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n",

8
drivers/net/wireless/marvell/mwifiex/fw.h
View File

@ -498,10 +498,10 @@ enum mwifiex_channel_flags {
#define RF_ANTENNA_AUTO 0xFFFF
#define HostCmd_SET_SEQ_NO_BSS_INFO(seq, num, type) { \
(((seq) & 0x00ff) | \
(((num) & 0x000f) << 8)) | \
(((type) & 0x000f) << 12); }
#define HostCmd_SET_SEQ_NO_BSS_INFO(seq, num, type) \
((((seq) & 0x00ff) | \
(((num) & 0x000f) << 8)) | \
(((type) & 0x000f) << 12))
#define HostCmd_GET_SEQ_NO(seq) \
((seq) & HostCmd_SEQ_NUM_MASK)

1
drivers/net/xen-netback/common.h
View File

@ -203,6 +203,7 @@ struct xenvif_queue { /* Per-queue data for xenvif */
unsigned int rx_queue_max;
unsigned int rx_queue_len;
unsigned long last_rx_time;
unsigned int rx_slots_needed;
bool stalled;
struct xenvif_copy_state rx_copy;

77
drivers/net/xen-netback/rx.c
View File

@ -33,28 +33,36 @@
#include <xen/xen.h>
#include <xen/events.h>
/*
* Update the needed ring page slots for the first SKB queued.
* Note that any call sequence outside the RX thread calling this function
* needs to wake up the RX thread via a call of xenvif_kick_thread()
* afterwards in order to avoid a race with putting the thread to sleep.
*/
static void xenvif_update_needed_slots(struct xenvif_queue *queue,
const struct sk_buff *skb)
{
unsigned int needed = 0;
if (skb) {
needed = DIV_ROUND_UP(skb->len, XEN_PAGE_SIZE);
if (skb_is_gso(skb))
needed++;
if (skb->sw_hash)
needed++;
}
WRITE_ONCE(queue->rx_slots_needed, needed);
}
static bool xenvif_rx_ring_slots_available(struct xenvif_queue *queue)
{
RING_IDX prod, cons;
struct sk_buff *skb;
int needed;
unsigned long flags;
unsigned int needed;
spin_lock_irqsave(&queue->rx_queue.lock, flags);
skb = skb_peek(&queue->rx_queue);
if (!skb) {
spin_unlock_irqrestore(&queue->rx_queue.lock, flags);
needed = READ_ONCE(queue->rx_slots_needed);
if (!needed)
return false;
}
needed = DIV_ROUND_UP(skb->len, XEN_PAGE_SIZE);
if (skb_is_gso(skb))
needed++;
if (skb->sw_hash)
needed++;
spin_unlock_irqrestore(&queue->rx_queue.lock, flags);
do {
prod = queue->rx.sring->req_prod;
@ -80,13 +88,19 @@ void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb)
spin_lock_irqsave(&queue->rx_queue.lock, flags);
__skb_queue_tail(&queue->rx_queue, skb);
queue->rx_queue_len += skb->len;
if (queue->rx_queue_len > queue->rx_queue_max) {
if (queue->rx_queue_len >= queue->rx_queue_max) {
struct net_device *dev = queue->vif->dev;
netif_tx_stop_queue(netdev_get_tx_queue(dev, queue->id));
kfree_skb(skb);
queue->vif->dev->stats.rx_dropped++;
} else {
if (skb_queue_empty(&queue->rx_queue))
xenvif_update_needed_slots(queue, skb);
__skb_queue_tail(&queue->rx_queue, skb);
queue->rx_queue_len += skb->len;
}
spin_unlock_irqrestore(&queue->rx_queue.lock, flags);
@ -100,6 +114,8 @@ static struct sk_buff *xenvif_rx_dequeue(struct xenvif_queue *queue)
skb = __skb_dequeue(&queue->rx_queue);
if (skb) {
xenvif_update_needed_slots(queue, skb_peek(&queue->rx_queue));
queue->rx_queue_len -= skb->len;
if (queue->rx_queue_len < queue->rx_queue_max) {
struct netdev_queue *txq;
@ -134,6 +150,7 @@ static void xenvif_rx_queue_drop_expired(struct xenvif_queue *queue)
break;
xenvif_rx_dequeue(queue);
kfree_skb(skb);
queue->vif->dev->stats.rx_dropped++;
}
}
@ -474,27 +491,31 @@ void xenvif_rx_action(struct xenvif_queue *queue)
xenvif_rx_copy_flush(queue);
}
static bool xenvif_rx_queue_stalled(struct xenvif_queue *queue)
static RING_IDX xenvif_rx_queue_slots(const struct xenvif_queue *queue)
{
RING_IDX prod, cons;
prod = queue->rx.sring->req_prod;
cons = queue->rx.req_cons;
return prod - cons;
}
static bool xenvif_rx_queue_stalled(const struct xenvif_queue *queue)
{
unsigned int needed = READ_ONCE(queue->rx_slots_needed);
return !queue->stalled &&
prod - cons < 1 &&
xenvif_rx_queue_slots(queue) < needed &&
time_after(jiffies,
queue->last_rx_time + queue->vif->stall_timeout);
}
static bool xenvif_rx_queue_ready(struct xenvif_queue *queue)
{
RING_IDX prod, cons;
unsigned int needed = READ_ONCE(queue->rx_slots_needed);
prod = queue->rx.sring->req_prod;
cons = queue->rx.req_cons;
return queue->stalled && prod - cons >= 1;
return queue->stalled && xenvif_rx_queue_slots(queue) >= needed;
}
bool xenvif_have_rx_work(struct xenvif_queue *queue, bool test_kthread)

127
drivers/net/xen-netfront.c
View File

@ -142,6 +142,9 @@ struct netfront_queue {
struct sk_buff *rx_skbs[NET_RX_RING_SIZE];
grant_ref_t gref_rx_head;
grant_ref_t grant_rx_ref[NET_RX_RING_SIZE];
unsigned int rx_rsp_unconsumed;
spinlock_t rx_cons_lock;
};
struct netfront_info {
@ -366,12 +369,13 @@ static int xennet_open(struct net_device *dev)
return 0;
}
static void xennet_tx_buf_gc(struct netfront_queue *queue)
static bool xennet_tx_buf_gc(struct netfront_queue *queue)
{
RING_IDX cons, prod;
unsigned short id;
struct sk_buff *skb;
bool more_to_do;
bool work_done = false;
const struct device *dev = &queue->info->netdev->dev;
BUG_ON(!netif_carrier_ok(queue->info->netdev));
@ -388,6 +392,8 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
for (cons = queue->tx.rsp_cons; cons != prod; cons++) {
struct xen_netif_tx_response txrsp;
work_done = true;
RING_COPY_RESPONSE(&queue->tx, cons, &txrsp);
if (txrsp.status == XEN_NETIF_RSP_NULL)
continue;
@ -431,11 +437,13 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
xennet_maybe_wake_tx(queue);
return;
return work_done;
err:
queue->info->broken = true;
dev_alert(dev, "Disabled for further use\n");
return work_done;
}
struct xennet_gnttab_make_txreq {
@ -755,6 +763,16 @@ static int xennet_close(struct net_device *dev)
return 0;
}
static void xennet_set_rx_rsp_cons(struct netfront_queue *queue, RING_IDX val)
{
unsigned long flags;
spin_lock_irqsave(&queue->rx_cons_lock, flags);
queue->rx.rsp_cons = val;
queue->rx_rsp_unconsumed = RING_HAS_UNCONSUMED_RESPONSES(&queue->rx);
spin_unlock_irqrestore(&queue->rx_cons_lock, flags);
}
static void xennet_move_rx_slot(struct netfront_queue *queue, struct sk_buff *skb,
grant_ref_t ref)
{
@ -806,7 +824,7 @@ static int xennet_get_extras(struct netfront_queue *queue,
xennet_move_rx_slot(queue, skb, ref);
} while (extra.flags & XEN_NETIF_EXTRA_FLAG_MORE);
queue->rx.rsp_cons = cons;
xennet_set_rx_rsp_cons(queue, cons);
return err;
}
@ -886,7 +904,7 @@ next:
}
if (unlikely(err))
queue->rx.rsp_cons = cons + slots;
xennet_set_rx_rsp_cons(queue, cons + slots);
return err;
}
@ -940,7 +958,8 @@ static int xennet_fill_frags(struct netfront_queue *queue,
__pskb_pull_tail(skb, pull_to - skb_headlen(skb));
}
if (unlikely(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS)) {
queue->rx.rsp_cons = ++cons + skb_queue_len(list);
xennet_set_rx_rsp_cons(queue,
++cons + skb_queue_len(list));
kfree_skb(nskb);
return -ENOENT;
}
@ -953,7 +972,7 @@ static int xennet_fill_frags(struct netfront_queue *queue,
kfree_skb(nskb);
}
queue->rx.rsp_cons = cons;
xennet_set_rx_rsp_cons(queue, cons);
return 0;
}
@ -1074,7 +1093,9 @@ err:
if (unlikely(xennet_set_skb_gso(skb, gso))) {
__skb_queue_head(&tmpq, skb);
queue->rx.rsp_cons += skb_queue_len(&tmpq);
xennet_set_rx_rsp_cons(queue,
queue->rx.rsp_cons +
skb_queue_len(&tmpq));
goto err;
}
}
@ -1098,7 +1119,8 @@ err:
__skb_queue_tail(&rxq, skb);
i = ++queue->rx.rsp_cons;
i = queue->rx.rsp_cons + 1;
xennet_set_rx_rsp_cons(queue, i);
work_done++;
}
@ -1260,40 +1282,79 @@ static int xennet_set_features(struct net_device *dev,
return 0;
}
static irqreturn_t xennet_tx_interrupt(int irq, void *dev_id)
static bool xennet_handle_tx(struct netfront_queue *queue, unsigned int *eoi)
{
struct netfront_queue *queue = dev_id;
unsigned long flags;
if (queue->info->broken)
return IRQ_HANDLED;
if (unlikely(queue->info->broken))
return false;
spin_lock_irqsave(&queue->tx_lock, flags);
xennet_tx_buf_gc(queue);
if (xennet_tx_buf_gc(queue))
*eoi = 0;
spin_unlock_irqrestore(&queue->tx_lock, flags);
return true;
}
static irqreturn_t xennet_tx_interrupt(int irq, void *dev_id)
{
unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
if (likely(xennet_handle_tx(dev_id, &eoiflag)))
xen_irq_lateeoi(irq, eoiflag);
return IRQ_HANDLED;
}
static bool xennet_handle_rx(struct netfront_queue *queue, unsigned int *eoi)
{
unsigned int work_queued;
unsigned long flags;
if (unlikely(queue->info->broken))
return false;
spin_lock_irqsave(&queue->rx_cons_lock, flags);
work_queued = RING_HAS_UNCONSUMED_RESPONSES(&queue->rx);
if (work_queued > queue->rx_rsp_unconsumed) {
queue->rx_rsp_unconsumed = work_queued;
*eoi = 0;
} else if (unlikely(work_queued < queue->rx_rsp_unconsumed)) {
const struct device *dev = &queue->info->netdev->dev;
spin_unlock_irqrestore(&queue->rx_cons_lock, flags);
dev_alert(dev, "RX producer index going backwards\n");
dev_alert(dev, "Disabled for further use\n");
queue->info->broken = true;
return false;
}
spin_unlock_irqrestore(&queue->rx_cons_lock, flags);
if (likely(netif_carrier_ok(queue->info->netdev) && work_queued))
napi_schedule(&queue->napi);
return true;
}
static irqreturn_t xennet_rx_interrupt(int irq, void *dev_id)
{
struct netfront_queue *queue = dev_id;
struct net_device *dev = queue->info->netdev;
unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
if (queue->info->broken)
return IRQ_HANDLED;
if (likely(netif_carrier_ok(dev) &&
RING_HAS_UNCONSUMED_RESPONSES(&queue->rx)))
napi_schedule(&queue->napi);
if (likely(xennet_handle_rx(dev_id, &eoiflag)))
xen_irq_lateeoi(irq, eoiflag);
return IRQ_HANDLED;
}
static irqreturn_t xennet_interrupt(int irq, void *dev_id)
{
xennet_tx_interrupt(irq, dev_id);
xennet_rx_interrupt(irq, dev_id);
unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
if (xennet_handle_tx(dev_id, &eoiflag) &&
xennet_handle_rx(dev_id, &eoiflag))
xen_irq_lateeoi(irq, eoiflag);
return IRQ_HANDLED;
}
@ -1527,9 +1588,10 @@ static int setup_netfront_single(struct netfront_queue *queue)
if (err < 0)
goto fail;
err = bind_evtchn_to_irqhandler(queue->tx_evtchn,
xennet_interrupt,
0, queue->info->netdev->name, queue);
err = bind_evtchn_to_irqhandler_lateeoi(queue->tx_evtchn,
xennet_interrupt, 0,
queue->info->netdev->name,
queue);
if (err < 0)
goto bind_fail;
queue->rx_evtchn = queue->tx_evtchn;
@ -1557,18 +1619,18 @@ static int setup_netfront_split(struct netfront_queue *queue)
snprintf(queue->tx_irq_name, sizeof(queue->tx_irq_name),
"%s-tx", queue->name);
err = bind_evtchn_to_irqhandler(queue->tx_evtchn,
xennet_tx_interrupt,
0, queue->tx_irq_name, queue);
err = bind_evtchn_to_irqhandler_lateeoi(queue->tx_evtchn,
xennet_tx_interrupt, 0,
queue->tx_irq_name, queue);
if (err < 0)
goto bind_tx_fail;
queue->tx_irq = err;
snprintf(queue->rx_irq_name, sizeof(queue->rx_irq_name),
"%s-rx", queue->name);
err = bind_evtchn_to_irqhandler(queue->rx_evtchn,
xennet_rx_interrupt,
0, queue->rx_irq_name, queue);
err = bind_evtchn_to_irqhandler_lateeoi(queue->rx_evtchn,
xennet_rx_interrupt, 0,
queue->rx_irq_name, queue);
if (err < 0)
goto bind_rx_fail;
queue->rx_irq = err;
@ -1670,6 +1732,7 @@ static int xennet_init_queue(struct netfront_queue *queue)
spin_lock_init(&queue->tx_lock);
spin_lock_init(&queue->rx_lock);
spin_lock_init(&queue->rx_cons_lock);
setup_timer(&queue->rx_refill_timer, rx_refill_timeout,
(unsigned long)queue);

15
drivers/pci/msi.c
View File

@ -796,9 +796,6 @@ static int msix_capability_init(struct pci_dev *dev, struct msix_entry *entries,
goto out_disable;
}
/* Ensure that all table entries are masked. */
msix_mask_all(base, tsize);
ret = msix_setup_entries(dev, base, entries, nvec, affd);
if (ret)
goto out_disable;
@ -821,6 +818,16 @@ static int msix_capability_init(struct pci_dev *dev, struct msix_entry *entries,
/* Set MSI-X enabled bits and unmask the function */
pci_intx_for_msi(dev, 0);
dev->msix_enabled = 1;
/*
* Ensure that all table entries are masked to prevent
* stale entries from firing in a crash kernel.
*
* Done late to deal with a broken Marvell NVME device
* which takes the MSI-X mask bits into account even
* when MSI-X is disabled, which prevents MSI delivery.
*/
msix_mask_all(base, tsize);
pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_MASKALL, 0);
pcibios_free_irq(dev);
@ -847,7 +854,7 @@ out_free:
free_msi_irqs(dev);
out_disable:
pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_ENABLE, 0);
pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE, 0);
return ret;
}

4
drivers/scsi/scsi_debug.c
View File

@ -2181,11 +2181,11 @@ static int resp_mode_select(struct scsi_cmnd *scp,
__func__, param_len, res);
md_len = mselect6 ? (arr[0] + 1) : (get_unaligned_be16(arr + 0) + 2);
bd_len = mselect6 ? arr[3] : get_unaligned_be16(arr + 6);
if (md_len > 2) {
off = bd_len + (mselect6 ? 4 : 8);
if (md_len > 2 || off >= res) {
mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1);
return check_condition_result;
}
off = bd_len + (mselect6 ? 4 : 8);
mpage = arr[off] & 0x3f;
ps = !!(arr[off] & 0x80);
if (ps) {

2
drivers/soc/tegra/fuse/fuse-tegra.c
View File

@ -178,7 +178,7 @@ static struct platform_driver tegra_fuse_driver = {
};
builtin_platform_driver(tegra_fuse_driver);
bool __init tegra_fuse_read_spare(unsigned int spare)
u32 __init tegra_fuse_read_spare(unsigned int spare)
{
unsigned int offset = fuse->soc->info->spare + spare * 4;

2
drivers/soc/tegra/fuse/fuse.h
View File

@ -62,7 +62,7 @@ struct tegra_fuse {
void tegra_init_revision(void);
void tegra_init_apbmisc(void);
bool __init tegra_fuse_read_spare(unsigned int spare);
u32 __init tegra_fuse_read_spare(unsigned int spare);
u32 __init tegra_fuse_read_early(unsigned int offset);
#ifdef CONFIG_ARCH_TEGRA_2x_SOC

30
drivers/tty/hvc/hvc_xen.c
View File

@ -50,6 +50,8 @@ struct xencons_info {
struct xenbus_device *xbdev;
struct xencons_interface *intf;
unsigned int evtchn;
XENCONS_RING_IDX out_cons;
unsigned int out_cons_same;
struct hvc_struct *hvc;
int irq;
int vtermno;
@ -151,6 +153,8 @@ static int domU_read_console(uint32_t vtermno, char *buf, int len)
XENCONS_RING_IDX cons, prod;
int recv = 0;
struct xencons_info *xencons = vtermno_to_xencons(vtermno);
unsigned int eoiflag = 0;
if (xencons == NULL)
return -EINVAL;
intf = xencons->intf;
@ -170,7 +174,27 @@ static int domU_read_console(uint32_t vtermno, char *buf, int len)
mb(); /* read ring before consuming */
intf->in_cons = cons;
notify_daemon(xencons);
/*
* When to mark interrupt having been spurious:
* - there was no new data to be read, and
* - the backend did not consume some output bytes, and
* - the previous round with no read data didn't see consumed bytes
* (we might have a race with an interrupt being in flight while
* updating xencons->out_cons, so account for that by allowing one
* round without any visible reason)
*/
if (intf->out_cons != xencons->out_cons) {
xencons->out_cons = intf->out_cons;
xencons->out_cons_same = 0;
}
if (recv) {
notify_daemon(xencons);
} else if (xencons->out_cons_same++ > 1) {
eoiflag = XEN_EOI_FLAG_SPURIOUS;
}
xen_irq_lateeoi(xencons->irq, eoiflag);
return recv;
}
@ -399,7 +423,7 @@ static int xencons_connect_backend(struct xenbus_device *dev,
if (ret)
return ret;
info->evtchn = evtchn;
irq = bind_evtchn_to_irq(evtchn);
irq = bind_interdomain_evtchn_to_irq_lateeoi(dev->otherend_id, evtchn);
if (irq < 0)
return irq;
info->irq = irq;
@ -563,7 +587,7 @@ static int __init xen_hvc_init(void)
return r;
info = vtermno_to_xencons(HVC_COOKIE);
info->irq = bind_evtchn_to_irq(info->evtchn);
info->irq = bind_evtchn_to_irq_lateeoi(info->evtchn);
}
if (info->irq < 0)
info->irq = 0; /* NO_IRQ */

6
drivers/usb/gadget/composite.c
View File

@ -1636,14 +1636,14 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
u8 endp;
if (w_length > USB_COMP_EP0_BUFSIZ) {
if (ctrl->bRequestType == USB_DIR_OUT) {
goto done;
} else {
if (ctrl->bRequestType & USB_DIR_IN) {
/* Cast away the const, we are going to overwrite on purpose. */
__le16 *temp = (__le16 *)&ctrl->wLength;
*temp = cpu_to_le16(USB_COMP_EP0_BUFSIZ);
w_length = USB_COMP_EP0_BUFSIZ;
} else {
goto done;
}
}

6
drivers/usb/gadget/legacy/dbgp.c
View File

@ -345,14 +345,14 @@ static int dbgp_setup(struct usb_gadget *gadget,
u16 len = 0;
if (length > DBGP_REQ_LEN) {
if (ctrl->bRequestType == USB_DIR_OUT) {
return err;
} else {
if (ctrl->bRequestType & USB_DIR_IN) {
/* Cast away the const, we are going to overwrite on purpose. */
__le16 *temp = (__le16 *)&ctrl->wLength;
*temp = cpu_to_le16(DBGP_REQ_LEN);
length = DBGP_REQ_LEN;
} else {
return err;
}
}

6
drivers/usb/gadget/legacy/inode.c
View File

@ -1339,14 +1339,14 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
u16 w_length = le16_to_cpu(ctrl->wLength);
if (w_length > RBUF_SIZE) {
if (ctrl->bRequestType == USB_DIR_OUT) {
return value;
} else {
if (ctrl->bRequestType & USB_DIR_IN) {
/* Cast away the const, we are going to overwrite on purpose. */
__le16 *temp = (__le16 *)&ctrl->wLength;
*temp = cpu_to_le16(RBUF_SIZE);
w_length = RBUF_SIZE;
} else {
return value;
}
}

8
drivers/usb/serial/option.c
View File

@ -1222,6 +1222,14 @@ static const struct usb_device_id option_ids[] = {
.driver_info = NCTRL(2) | RSVD(3) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1063, 0xff), /* Telit LN920 (ECM) */
.driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1070, 0xff), /* Telit FN990 (rmnet) */
.driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1071, 0xff), /* Telit FN990 (MBIM) */
.driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1072, 0xff), /* Telit FN990 (RNDIS) */
.driver_info = NCTRL(2) | RSVD(3) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1073, 0xff), /* Telit FN990 (ECM) */
.driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
.driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),

2
fs/fuse/dir.c
View File

@ -969,7 +969,7 @@ int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
if (!parent)
return -ENOENT;
inode_lock(parent);
inode_lock_nested(parent, I_MUTEX_PARENT);
if (!S_ISDIR(parent->i_mode))
goto unlock;

9
fs/nfsd/nfs4state.c
View File

@ -955,6 +955,11 @@ hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
return 0;
}
static bool delegation_hashed(struct nfs4_delegation *dp)
{
return !(list_empty(&dp->dl_perfile));
}
static bool
unhash_delegation_locked(struct nfs4_delegation *dp)
{
@ -962,7 +967,7 @@ unhash_delegation_locked(struct nfs4_delegation *dp)
lockdep_assert_held(&state_lock);
if (list_empty(&dp->dl_perfile))
if (!delegation_hashed(dp))
return false;
dp->dl_stid.sc_type = NFS4_CLOSED_DELEG_STID;
@ -3881,7 +3886,7 @@ static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb)
* queued for a lease break. Don't queue it again.
*/
spin_lock(&state_lock);
if (dp->dl_time == 0) {
if (delegation_hashed(dp) && dp->dl_time == 0) {
dp->dl_time = get_seconds();
list_add_tail(&dp->dl_recall_lru, &nn->del_recall_lru);
}

21
kernel/audit.c
View File

@ -686,7 +686,7 @@ static int kauditd_send_queue(struct sock *sk, u32 portid,
{
int rc = 0;
struct sk_buff *skb;
static unsigned int failed = 0;
unsigned int failed = 0;
/* NOTE: kauditd_thread takes care of all our locking, we just use
* the netlink info passed to us (e.g. sk and portid) */
@ -703,32 +703,30 @@ static int kauditd_send_queue(struct sock *sk, u32 portid,
continue;
}
retry:
/* grab an extra skb reference in case of error */
skb_get(skb);
rc = netlink_unicast(sk, skb, portid, 0);
if (rc < 0) {
/* fatal failure for our queue flush attempt? */
/* send failed - try a few times unless fatal error */
if (++failed >= retry_limit ||
rc == -ECONNREFUSED || rc == -EPERM) {
/* yes - error processing for the queue */
sk = NULL;
if (err_hook)
(*err_hook)(skb);
if (!skb_hook)
goto out;
/* keep processing with the skb_hook */
if (rc == -EAGAIN)
rc = 0;
/* continue to drain the queue */
continue;
} else
/* no - requeue to preserve ordering */
skb_queue_head(queue, skb);
goto retry;
} else {
/* it worked - drop the extra reference and continue */
/* skb sent - drop the extra reference and continue */
consume_skb(skb);
failed = 0;
}
}
out:
return (rc >= 0 ? 0 : rc);
}
@ -1518,7 +1516,8 @@ static int __net_init audit_net_init(struct net *net)
audit_panic("cannot initialize netlink socket in namespace");
return -ENOMEM;
}
aunet->sk->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT;
/* limit the timeout in case auditd is blocked/stopped */
aunet->sk->sk_sndtimeo = HZ / 10;
return 0;
}

3
kernel/time/timekeeping.c
View File

@ -1235,8 +1235,7 @@ int do_settimeofday64(const struct timespec64 *ts)
timekeeping_forward_now(tk);
xt = tk_xtime(tk);
ts_delta.tv_sec = ts->tv_sec - xt.tv_sec;
ts_delta.tv_nsec = ts->tv_nsec - xt.tv_nsec;
ts_delta = timespec64_sub(*ts, xt);
if (timespec64_compare(&tk->wall_to_monotonic, &ts_delta) > 0) {
ret = -EINVAL;

3
kernel/trace/tracing_map.c
View File

@ -24,6 +24,7 @@
#include <linux/jhash.h>
#include <linux/slab.h>
#include <linux/sort.h>
#include <linux/kmemleak.h>
#include "tracing_map.h"
#include "trace.h"
@ -227,6 +228,7 @@ void tracing_map_array_free(struct tracing_map_array *a)
for (i = 0; i < a->n_pages; i++) {
if (!a->pages[i])
break;
kmemleak_free(a->pages[i]);
free_page((unsigned long)a->pages[i]);
}
@ -262,6 +264,7 @@ struct tracing_map_array *tracing_map_array_alloc(unsigned int n_elts,
a->pages[i] = (void *)get_zeroed_page(GFP_KERNEL);
if (!a->pages[i])
goto free;
kmemleak_alloc(a->pages[i], PAGE_SIZE, 1, GFP_KERNEL);
}
out:
return a;

6
lib/Kconfig.debug
View File

@ -1131,7 +1131,7 @@ config LOCKDEP
bool
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
select STACKTRACE
select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 && !MICROBLAZE && !ARC && !SCORE && !X86
select FRAME_POINTER if !MIPS && !PPC && !ARM && !S390 && !MICROBLAZE && !ARC && !SCORE && !X86
select KALLSYMS
select KALLSYMS_ALL
@ -1566,7 +1566,7 @@ config FAULT_INJECTION_STACKTRACE_FILTER
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on !X86_64
select STACKTRACE
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !SCORE && !X86
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !SCORE && !X86
help
Provide stacktrace filter for fault-injection capabilities
@ -1575,7 +1575,7 @@ config LATENCYTOP
depends on DEBUG_KERNEL
depends on STACKTRACE_SUPPORT
depends on PROC_FS
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !X86
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86
select KALLSYMS
select KALLSYMS_ALL
select STACKTRACE

17
net/bpf/test_run.c
View File

@ -96,6 +96,7 @@ int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
u32 size = kattr->test.data_size_in;
u32 repeat = kattr->test.repeat;
u32 retval, duration;
int hh_len = ETH_HLEN;
struct sk_buff *skb;
void *data;
int ret;
@ -131,12 +132,22 @@ int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
skb_reset_network_header(skb);
if (is_l2)
__skb_push(skb, ETH_HLEN);
__skb_push(skb, hh_len);
if (is_direct_pkt_access)
bpf_compute_data_end(skb);
retval = bpf_test_run(prog, skb, repeat, &duration);
if (!is_l2)
__skb_push(skb, ETH_HLEN);
if (!is_l2) {
if (skb_headroom(skb) < hh_len) {
int nhead = HH_DATA_ALIGN(hh_len - skb_headroom(skb));
if (pskb_expand_head(skb, nhead, 0, GFP_USER)) {
kfree_skb(skb);
return -ENOMEM;
}
}
memset(__skb_push(skb, hh_len), 0, hh_len);
}
size = skb->len;
/* bpf program can never convert linear skb to non-linear */
if (WARN_ON_ONCE(skb_is_nonlinear(skb)))

1
net/ipv6/sit.c
View File

@ -1858,7 +1858,6 @@ static int __net_init sit_init_net(struct net *net)
return 0;
err_reg_dev:
ipip6_dev_free(sitn->fb_tunnel_dev);
free_netdev(sitn->fb_tunnel_dev);
err_alloc_dev:
return err;

2
net/mac80211/agg-tx.c
View File

@ -109,7 +109,7 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
mgmt->u.action.u.addba_req.start_seq_num =
cpu_to_le16(start_seq_num << 4);
ieee80211_tx_skb(sdata, skb);
ieee80211_tx_skb_tid(sdata, skb, tid);
}
void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn)

5
net/netlink/af_netlink.c
View File

@ -1822,6 +1822,11 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
if (msg->msg_flags&MSG_OOB)
return -EOPNOTSUPP;
if (len == 0) {
pr_warn_once("Zero length message leads to an empty skb\n");
return -ENODATA;
}
err = scm_send(sock, msg, &scm, true);
if (err < 0)
return err;

6
net/nfc/netlink.c
View File

@ -666,8 +666,10 @@ static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
{
struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
nfc_device_iter_exit(iter);
kfree(iter);
if (iter) {
nfc_device_iter_exit(iter);
kfree(iter);
}
return 0;
}

5
net/packet/af_packet.c
View File

@ -4477,9 +4477,10 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
}
out_free_pg_vec:
bitmap_free(rx_owner_map);
if (pg_vec)
if (pg_vec) {
bitmap_free(rx_owner_map);
free_pg_vec(pg_vec, order, req->tp_block_nr);
}
out:
return err;
}

2
scripts/recordmcount.pl
View File

@ -252,7 +252,7 @@ if ($arch eq "x86_64") {
} elsif ($arch eq "s390" && $bits == 64) {
if ($cc =~ /-DCC_USING_HOTPATCH/) {
$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*brcl\\s*0,[0-9a-f]+ <([^\+]*)>\$";
$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*(bcrl\\s*0,|jgnop\\s*)[0-9a-f]+ <([^\+]*)>\$";
$mcount_adjust = 0;
} else {
$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$";

18
tools/testing/selftests/bpf/test_verifier.c
View File

@ -4334,6 +4334,24 @@ static struct bpf_test tests[] = {
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_LWT_XMIT,
},
{
"make headroom for LWT_XMIT",
.insns = {
BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
BPF_MOV64_IMM(BPF_REG_2, 34),
BPF_MOV64_IMM(BPF_REG_3, 0),
BPF_EMIT_CALL(BPF_FUNC_skb_change_head),
/* split for s390 to succeed */
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
BPF_MOV64_IMM(BPF_REG_2, 42),
BPF_MOV64_IMM(BPF_REG_3, 0),
BPF_EMIT_CALL(BPF_FUNC_skb_change_head),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_LWT_XMIT,
},
{
"invalid access of tc_classid for LWT_IN",
.insns = {