mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-20 21:34:24 -05:00
80 lines
3.0 KiB
Diff
80 lines
3.0 KiB
Diff
From 5479a3c164c8762b5bf91c5fae452882366adb6a Mon Sep 17 00:00:00 2001
|
|
From: Maggie White <maggiewhite@google.com>
|
|
Date: Wed, 5 Jul 2017 16:47:15 -0700
|
|
Subject: mm: Fix incorrect type conversion for size during dma allocation
|
|
|
|
This was found during userspace fuzzing test when a large size
|
|
allocation is made from ion
|
|
|
|
[<ffffffc00008a098>] show_stack+0x10/0x1c
|
|
[<ffffffc00119c390>] dump_stack+0x74/0xc8
|
|
[<ffffffc00020d9a0>] kasan_report_error+0x2b0/0x408
|
|
[<ffffffc00020dbd4>] kasan_report+0x34/0x40
|
|
[<ffffffc00020cfec>] __asan_storeN+0x15c/0x168
|
|
[<ffffffc00020d228>] memset+0x20/0x44
|
|
[<ffffffc00009b730>] __dma_alloc_coherent+0x114/0x18c
|
|
[<ffffffc00009c6e8>] __dma_alloc_noncoherent+0xbc/0x19c
|
|
[<ffffffc000c2b3e0>] ion_cma_allocate+0x178/0x2f0
|
|
[<ffffffc000c2b750>] ion_secure_cma_allocate+0xdc/0x190
|
|
[<ffffffc000c250dc>] ion_alloc+0x264/0xb88
|
|
[<ffffffc000c25e94>] ion_ioctl+0x1f4/0x480
|
|
[<ffffffc00022f650>] do_vfs_ioctl+0x67c/0x764
|
|
[<ffffffc00022f790>] SyS_ioctl+0x58/0x8c
|
|
|
|
Bug: 38195738
|
|
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
|
|
Signed-off-by: Maggie White <maggiewhite@google.com>
|
|
Change-Id: I6b1a0a3eaec10500cd4e73290efad4023bc83da5
|
|
---
|
|
drivers/base/dma-contiguous.c | 4 ++--
|
|
include/linux/dma-contiguous.h | 4 ++--
|
|
2 files changed, 4 insertions(+), 4 deletions(-)
|
|
|
|
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
|
|
index f6e779e..9313bfc1 100644
|
|
--- a/drivers/base/dma-contiguous.c
|
|
+++ b/drivers/base/dma-contiguous.c
|
|
@@ -589,7 +589,7 @@ static void clear_cma_bitmap(struct cma *cma, unsigned long pfn, int count)
|
|
* global one. Requires architecture specific get_dev_cma_area() helper
|
|
* function.
|
|
*/
|
|
-unsigned long dma_alloc_from_contiguous(struct device *dev, int count,
|
|
+unsigned long dma_alloc_from_contiguous(struct device *dev, size_t count,
|
|
unsigned int align)
|
|
{
|
|
unsigned long mask, pfn = 0, pageno, start = 0;
|
|
@@ -604,7 +604,7 @@ unsigned long dma_alloc_from_contiguous(struct device *dev, int count,
|
|
if (align > CONFIG_CMA_ALIGNMENT)
|
|
align = CONFIG_CMA_ALIGNMENT;
|
|
|
|
- pr_debug("%s(cma %p, count %d, align %d)\n", __func__, (void *)cma,
|
|
+ pr_debug("%s(cma %p, count %zu, align %d)\n", __func__, (void *)cma,
|
|
count, align);
|
|
|
|
if (!count)
|
|
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
|
|
index 9e6fee9..d8d124e 100644
|
|
--- a/include/linux/dma-contiguous.h
|
|
+++ b/include/linux/dma-contiguous.h
|
|
@@ -117,7 +117,7 @@ static inline int dma_declare_contiguous_reserved(struct device *dev,
|
|
return ret;
|
|
}
|
|
|
|
-unsigned long dma_alloc_from_contiguous(struct device *dev, int count,
|
|
+unsigned long dma_alloc_from_contiguous(struct device *dev, size_t count,
|
|
unsigned int order);
|
|
bool dma_release_from_contiguous(struct device *dev, unsigned long pfn,
|
|
int count);
|
|
@@ -136,7 +136,7 @@ int dma_declare_contiguous(struct device *dev, phys_addr_t size,
|
|
}
|
|
|
|
static inline
|
|
-unsigned long dma_alloc_from_contiguous(struct device *dev, int count,
|
|
+unsigned long dma_alloc_from_contiguous(struct device *dev, size_t count,
|
|
unsigned int order)
|
|
{
|
|
return 0;
|
|
--
|
|
cgit v1.1
|
|
|