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openwrt/target/linux/generic/hack-4.14/904-debloat_dma_buf.patch
Petr Štetiar 1d94f72439 kernel: bump 4.14 to 4.14.258
Rebased patches:

 * generic: 273-batman-adv-Convert-packet.h-to-uapi-header.patch
 * ipq806x: 0065-arm-override-compiler-flags.patch
 * mvebu: 513-arm64-dts-marvell-armada37xx-Add-emmc-sdio-pinctrl-d.patch

Removed patches:

 Fixed upstream:

   * ar71xx: 821-serial-core-add-support-for-boot-console-with-arbitr.patch
   * ath79: 921-serial-core-add-support-for-boot-console-with-arbitr.patch
     - in 4.14.256 via 9112e7ef87149b3d8093e7446d784117f6e18d69

   * mvebu: 527-PCI-aardvark-allow-to-specify-link-capability.patch
     - in 4.14.257 via 62a3dc9b65a2b24800fc4267b8cf590fad135034

   * mvebu: 524-PCI-aardvark-set-host-and-device-to-the-same-MAX-payload-size.patch
     - should be hopefully fixed by the bunch of changes in .256 and .257

Run tested on ipq40xx/glinet-b1300 and mvebu/turris-omnia.

Fixes: CVE-2021-3640
Signed-off-by: Petr Štetiar <ynezz@true.cz>
2021-12-19 08:23:23 +01:00

65 lines
1.8 KiB
Diff

From e3692cb2fcd5ba1244512a0f43b8118f65f1c375 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Sat, 8 Jul 2017 08:20:43 +0200
Subject: debloat: dmabuf
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
drivers/base/Kconfig | 2 +-
drivers/dma-buf/Makefile | 10 +++++++---
drivers/dma-buf/dma-buf.c | 4 +++-
kernel/sched/core.c | 1 +
4 files changed, 12 insertions(+), 5 deletions(-)
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -246,7 +246,7 @@ config SOC_BUS
source "drivers/base/regmap/Kconfig"
config DMA_SHARED_BUFFER
- bool
+ tristate
default n
select ANON_INODES
select IRQ_WORK
--- a/drivers/dma-buf/Makefile
+++ b/drivers/dma-buf/Makefile
@@ -1,3 +1,7 @@
-obj-y := dma-buf.o dma-fence.o dma-fence-array.o reservation.o seqno-fence.o
-obj-$(CONFIG_SYNC_FILE) += sync_file.o
-obj-$(CONFIG_SW_SYNC) += sw_sync.o sync_debug.o
+obj-$(CONFIG_DMA_SHARED_BUFFER) := dma-shared-buffer.o
+
+dma-buf-objs-y := dma-buf.o dma-fence.o dma-fence-array.o reservation.o seqno-fence.o
+dma-buf-objs-$(CONFIG_SYNC_FILE) += sync_file.o
+dma-buf-objs-$(CONFIG_SW_SYNC) += sw_sync.o sync_debug.o
+
+dma-shared-buffer-objs := $(dma-buf-objs-y)
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -34,6 +34,7 @@
#include <linux/poll.h>
#include <linux/reservation.h>
#include <linux/mm.h>
+#include <linux/module.h>
#include <uapi/linux/dma-buf.h>
@@ -1206,4 +1207,5 @@ static void __exit dma_buf_deinit(void)
{
dma_buf_uninit_debugfs();
}
-__exitcall(dma_buf_deinit);
+module_exit(dma_buf_deinit);
+MODULE_LICENSE("GPL");
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2168,6 +2168,7 @@ int wake_up_state(struct task_struct *p,
{
return try_to_wake_up(p, state, 0);
}
+EXPORT_SYMBOL_GPL(wake_up_state);
/*
* Perform scheduler related setup for a newly forked process p.