* [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
@ 2015-10-13 0:00 ` Rohit Vaswani
0 siblings, 0 replies; 8+ messages in thread
From: Rohit Vaswani @ 2015-10-13 0:00 UTC (permalink / raw)
To: Greg Kroah-Hartman, Andrew Morton, Marek Szyprowski
Cc: Rohit Vaswani, linux-kernel, linux-mm
This was found during userspace fuzzing test when a large size
dma cma allocation is made by driver(like ion) through userspace.
show_stack+0x10/0x1c
dump_stack+0x74/0xc8
kasan_report_error+0x2b0/0x408
kasan_report+0x34/0x40
__asan_storeN+0x15c/0x168
memset+0x20/0x44
__dma_alloc_coherent+0x114/0x18c
Change-Id: I4e2db81c496604ecbe93ec21fe8ee94589c8eb63
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
---
drivers/base/dma-contiguous.c | 2 +-
include/linux/cma.h | 2 +-
include/linux/dma-contiguous.h | 4 ++--
mm/cma.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index 950fff9..a12ff98 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -187,7 +187,7 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
* global one. Requires architecture specific dev_get_cma_area() helper
* function.
*/
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int align)
{
if (align > CONFIG_CMA_ALIGNMENT)
diff --git a/include/linux/cma.h b/include/linux/cma.h
index f7ef093..29f9e77 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -26,6 +26,6 @@ extern int __init cma_declare_contiguous(phys_addr_t base,
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
struct cma **res_cma);
-extern struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align);
+extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
#endif
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 569bbd0..fec734d 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -111,7 +111,7 @@ static inline int dma_declare_contiguous(struct device *dev, phys_addr_t size,
return ret;
}
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order);
bool dma_release_from_contiguous(struct device *dev, struct page *pages,
int count);
@@ -144,7 +144,7 @@ int dma_declare_contiguous(struct device *dev, phys_addr_t size,
}
static inline
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order)
{
return NULL;
diff --git a/mm/cma.c b/mm/cma.c
index e7d1db5..4eb56bad 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -361,7 +361,7 @@ err:
* This function allocates part of contiguous memory on specific
* contiguous memory area.
*/
-struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
+struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
{
unsigned long mask, offset, pfn, start = 0;
unsigned long bitmap_maxno, bitmap_no, bitmap_count;
@@ -371,7 +371,7 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
if (!cma || !cma->count)
return NULL;
- 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)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
@ 2015-10-13 0:00 ` Rohit Vaswani
0 siblings, 0 replies; 8+ messages in thread
From: Rohit Vaswani @ 2015-10-13 0:00 UTC (permalink / raw)
To: Greg Kroah-Hartman, Andrew Morton, Marek Szyprowski
Cc: Rohit Vaswani, linux-kernel, linux-mm
This was found during userspace fuzzing test when a large size
dma cma allocation is made by driver(like ion) through userspace.
show_stack+0x10/0x1c
dump_stack+0x74/0xc8
kasan_report_error+0x2b0/0x408
kasan_report+0x34/0x40
__asan_storeN+0x15c/0x168
memset+0x20/0x44
__dma_alloc_coherent+0x114/0x18c
Change-Id: I4e2db81c496604ecbe93ec21fe8ee94589c8eb63
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
---
drivers/base/dma-contiguous.c | 2 +-
include/linux/cma.h | 2 +-
include/linux/dma-contiguous.h | 4 ++--
mm/cma.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index 950fff9..a12ff98 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -187,7 +187,7 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
* global one. Requires architecture specific dev_get_cma_area() helper
* function.
*/
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int align)
{
if (align > CONFIG_CMA_ALIGNMENT)
diff --git a/include/linux/cma.h b/include/linux/cma.h
index f7ef093..29f9e77 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -26,6 +26,6 @@ extern int __init cma_declare_contiguous(phys_addr_t base,
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
struct cma **res_cma);
-extern struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align);
+extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
#endif
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 569bbd0..fec734d 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -111,7 +111,7 @@ static inline int dma_declare_contiguous(struct device *dev, phys_addr_t size,
return ret;
}
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order);
bool dma_release_from_contiguous(struct device *dev, struct page *pages,
int count);
@@ -144,7 +144,7 @@ int dma_declare_contiguous(struct device *dev, phys_addr_t size,
}
static inline
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order)
{
return NULL;
diff --git a/mm/cma.c b/mm/cma.c
index e7d1db5..4eb56bad 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -361,7 +361,7 @@ err:
* This function allocates part of contiguous memory on specific
* contiguous memory area.
*/
-struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
+struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
{
unsigned long mask, offset, pfn, start = 0;
unsigned long bitmap_maxno, bitmap_no, bitmap_count;
@@ -371,7 +371,7 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
if (!cma || !cma->count)
return NULL;
- 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)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
--
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^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
2015-10-13 0:00 ` Rohit Vaswani
@ 2015-10-13 2:11 ` Greg Kroah-Hartman
-1 siblings, 0 replies; 8+ messages in thread
From: Greg Kroah-Hartman @ 2015-10-13 2:11 UTC (permalink / raw)
To: Rohit Vaswani; +Cc: Andrew Morton, Marek Szyprowski, linux-kernel, linux-mm
On Mon, Oct 12, 2015 at 05:00:47PM -0700, Rohit Vaswani wrote:
> This was found during userspace fuzzing test when a large size
> dma cma allocation is made by driver(like ion) through userspace.
>
> show_stack+0x10/0x1c
> dump_stack+0x74/0xc8
> kasan_report_error+0x2b0/0x408
> kasan_report+0x34/0x40
> __asan_storeN+0x15c/0x168
> memset+0x20/0x44
> __dma_alloc_coherent+0x114/0x18c
>
> Change-Id: I4e2db81c496604ecbe93ec21fe8ee94589c8eb63
We can't do anything with gerrit ids, sorry, please remove.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
@ 2015-10-13 2:11 ` Greg Kroah-Hartman
0 siblings, 0 replies; 8+ messages in thread
From: Greg Kroah-Hartman @ 2015-10-13 2:11 UTC (permalink / raw)
To: Rohit Vaswani; +Cc: Andrew Morton, Marek Szyprowski, linux-kernel, linux-mm
On Mon, Oct 12, 2015 at 05:00:47PM -0700, Rohit Vaswani wrote:
> This was found during userspace fuzzing test when a large size
> dma cma allocation is made by driver(like ion) through userspace.
>
> show_stack+0x10/0x1c
> dump_stack+0x74/0xc8
> kasan_report_error+0x2b0/0x408
> kasan_report+0x34/0x40
> __asan_storeN+0x15c/0x168
> memset+0x20/0x44
> __dma_alloc_coherent+0x114/0x18c
>
> Change-Id: I4e2db81c496604ecbe93ec21fe8ee94589c8eb63
We can't do anything with gerrit ids, sorry, please remove.
thanks,
greg k-h
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
2015-10-14 20:23 ` Rohit Vaswani
@ 2015-10-18 5:10 ` Greg Kroah-Hartman
-1 siblings, 0 replies; 8+ messages in thread
From: Greg Kroah-Hartman @ 2015-10-18 5:10 UTC (permalink / raw)
To: Rohit Vaswani; +Cc: Andrew Morton, Marek Szyprowski, linux-kernel, linux-mm
On Wed, Oct 14, 2015 at 01:23:51PM -0700, Rohit Vaswani wrote:
> This was found during userspace fuzzing test when a large size
> dma cma allocation is made by driver(like ion) through userspace.
>
> show_stack+0x10/0x1c
> dump_stack+0x74/0xc8
> kasan_report_error+0x2b0/0x408
> kasan_report+0x34/0x40
> __asan_storeN+0x15c/0x168
> memset+0x20/0x44
> __dma_alloc_coherent+0x114/0x18c
>
> Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
@ 2015-10-18 5:10 ` Greg Kroah-Hartman
0 siblings, 0 replies; 8+ messages in thread
From: Greg Kroah-Hartman @ 2015-10-18 5:10 UTC (permalink / raw)
To: Rohit Vaswani; +Cc: Andrew Morton, Marek Szyprowski, linux-kernel, linux-mm
On Wed, Oct 14, 2015 at 01:23:51PM -0700, Rohit Vaswani wrote:
> This was found during userspace fuzzing test when a large size
> dma cma allocation is made by driver(like ion) through userspace.
>
> show_stack+0x10/0x1c
> dump_stack+0x74/0xc8
> kasan_report_error+0x2b0/0x408
> kasan_report+0x34/0x40
> __asan_storeN+0x15c/0x168
> memset+0x20/0x44
> __dma_alloc_coherent+0x114/0x18c
>
> Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
@ 2015-10-14 20:23 ` Rohit Vaswani
0 siblings, 0 replies; 8+ messages in thread
From: Rohit Vaswani @ 2015-10-14 20:23 UTC (permalink / raw)
To: Greg Kroah-Hartman, Andrew Morton, Marek Szyprowski
Cc: Rohit Vaswani, linux-kernel, linux-mm
This was found during userspace fuzzing test when a large size
dma cma allocation is made by driver(like ion) through userspace.
show_stack+0x10/0x1c
dump_stack+0x74/0xc8
kasan_report_error+0x2b0/0x408
kasan_report+0x34/0x40
__asan_storeN+0x15c/0x168
memset+0x20/0x44
__dma_alloc_coherent+0x114/0x18c
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
---
drivers/base/dma-contiguous.c | 2 +-
include/linux/cma.h | 2 +-
include/linux/dma-contiguous.h | 4 ++--
mm/cma.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index 950fff9..a12ff98 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -187,7 +187,7 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
* global one. Requires architecture specific dev_get_cma_area() helper
* function.
*/
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int align)
{
if (align > CONFIG_CMA_ALIGNMENT)
diff --git a/include/linux/cma.h b/include/linux/cma.h
index f7ef093..29f9e77 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -26,6 +26,6 @@ extern int __init cma_declare_contiguous(phys_addr_t base,
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
struct cma **res_cma);
-extern struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align);
+extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
#endif
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 569bbd0..fec734d 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -111,7 +111,7 @@ static inline int dma_declare_contiguous(struct device *dev, phys_addr_t size,
return ret;
}
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order);
bool dma_release_from_contiguous(struct device *dev, struct page *pages,
int count);
@@ -144,7 +144,7 @@ int dma_declare_contiguous(struct device *dev, phys_addr_t size,
}
static inline
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order)
{
return NULL;
diff --git a/mm/cma.c b/mm/cma.c
index e7d1db5..4eb56bad 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -361,7 +361,7 @@ err:
* This function allocates part of contiguous memory on specific
* contiguous memory area.
*/
-struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
+struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
{
unsigned long mask, offset, pfn, start = 0;
unsigned long bitmap_maxno, bitmap_no, bitmap_count;
@@ -371,7 +371,7 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
if (!cma || !cma->count)
return NULL;
- 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)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation
@ 2015-10-14 20:23 ` Rohit Vaswani
0 siblings, 0 replies; 8+ messages in thread
From: Rohit Vaswani @ 2015-10-14 20:23 UTC (permalink / raw)
To: Greg Kroah-Hartman, Andrew Morton, Marek Szyprowski
Cc: Rohit Vaswani, linux-kernel, linux-mm
This was found during userspace fuzzing test when a large size
dma cma allocation is made by driver(like ion) through userspace.
show_stack+0x10/0x1c
dump_stack+0x74/0xc8
kasan_report_error+0x2b0/0x408
kasan_report+0x34/0x40
__asan_storeN+0x15c/0x168
memset+0x20/0x44
__dma_alloc_coherent+0x114/0x18c
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
---
drivers/base/dma-contiguous.c | 2 +-
include/linux/cma.h | 2 +-
include/linux/dma-contiguous.h | 4 ++--
mm/cma.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index 950fff9..a12ff98 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -187,7 +187,7 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
* global one. Requires architecture specific dev_get_cma_area() helper
* function.
*/
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int align)
{
if (align > CONFIG_CMA_ALIGNMENT)
diff --git a/include/linux/cma.h b/include/linux/cma.h
index f7ef093..29f9e77 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -26,6 +26,6 @@ extern int __init cma_declare_contiguous(phys_addr_t base,
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
struct cma **res_cma);
-extern struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align);
+extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
#endif
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 569bbd0..fec734d 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -111,7 +111,7 @@ static inline int dma_declare_contiguous(struct device *dev, phys_addr_t size,
return ret;
}
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order);
bool dma_release_from_contiguous(struct device *dev, struct page *pages,
int count);
@@ -144,7 +144,7 @@ int dma_declare_contiguous(struct device *dev, phys_addr_t size,
}
static inline
-struct page *dma_alloc_from_contiguous(struct device *dev, int count,
+struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
unsigned int order)
{
return NULL;
diff --git a/mm/cma.c b/mm/cma.c
index e7d1db5..4eb56bad 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -361,7 +361,7 @@ err:
* This function allocates part of contiguous memory on specific
* contiguous memory area.
*/
-struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
+struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
{
unsigned long mask, offset, pfn, start = 0;
unsigned long bitmap_maxno, bitmap_no, bitmap_count;
@@ -371,7 +371,7 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
if (!cma || !cma->count)
return NULL;
- 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)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply related [flat|nested] 8+ messages in thread
end of thread, other threads:[~2015-10-18 5:10 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-10-13 0:00 [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation Rohit Vaswani
2015-10-13 0:00 ` Rohit Vaswani
2015-10-13 2:11 ` Greg Kroah-Hartman
2015-10-13 2:11 ` Greg Kroah-Hartman
2015-10-14 20:23 Rohit Vaswani
2015-10-14 20:23 ` Rohit Vaswani
2015-10-18 5:10 ` Greg Kroah-Hartman
2015-10-18 5:10 ` Greg Kroah-Hartman
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