* [PATCH] gadget: f_thor: fix wrong file size cast
[not found] <CGME20201016072733epcas1p4e912e3453206c2747f8d0cd1c8afc1a6@epcas1p4.samsung.com>
@ 2020-10-16 7:29 ` Seung-Woo Kim
2020-10-18 23:25 ` Jaehoon Chung
0 siblings, 1 reply; 2+ messages in thread
From: Seung-Woo Kim @ 2020-10-16 7:29 UTC (permalink / raw)
To: u-boot
Casting 32bit int value directly into 64bit unsigned type causes
wrong value for file size equal or larger than 2GB. Fix the wrong
file size by casting uint32_t first.
Fixes: commit 1fe9ae76b113 ("gadget: f_thor: update to support more than 4GB file as thor 5.0")
Reported-by: Junghoon Kim <jhoon20.kim@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
---
drivers/usb/gadget/f_thor.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/gadget/f_thor.c b/drivers/usb/gadget/f_thor.c
index 88fc87f2e9..559ffb759e 100644
--- a/drivers/usb/gadget/f_thor.c
+++ b/drivers/usb/gadget/f_thor.c
@@ -266,8 +266,8 @@ static long long int process_rqt_download(const struct rqt_box *rqt)
switch (rqt->rqt_data) {
case RQT_DL_INIT:
- thor_file_size = (unsigned long long int)rqt->int_data[0] +
- (((unsigned long long int)rqt->int_data[1])
+ thor_file_size = (uint64_t)(uint32_t)rqt->int_data[0] +
+ (((uint64_t)(uint32_t)rqt->int_data[1])
<< 32);
debug("INIT: total %llu bytes\n", thor_file_size);
break;
@@ -280,8 +280,8 @@ static long long int process_rqt_download(const struct rqt_box *rqt)
break;
}
- thor_file_size = (unsigned long long int)rqt->int_data[1] +
- (((unsigned long long int)rqt->int_data[2])
+ thor_file_size = (uint64_t)(uint32_t)rqt->int_data[1] +
+ (((uint64_t)(uint32_t)rqt->int_data[2])
<< 32);
memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE);
f_name[F_NAME_BUF_SIZE] = '\0';
--
2.19.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] gadget: f_thor: fix wrong file size cast
2020-10-16 7:29 ` [PATCH] gadget: f_thor: fix wrong file size cast Seung-Woo Kim
@ 2020-10-18 23:25 ` Jaehoon Chung
0 siblings, 0 replies; 2+ messages in thread
From: Jaehoon Chung @ 2020-10-18 23:25 UTC (permalink / raw)
To: u-boot
On 10/16/20 4:29 PM, Seung-Woo Kim wrote:
> Casting 32bit int value directly into 64bit unsigned type causes
> wrong value for file size equal or larger than 2GB. Fix the wrong
> file size by casting uint32_t first.
>
> Fixes: commit 1fe9ae76b113 ("gadget: f_thor: update to support more than 4GB file as thor 5.0")
> Reported-by: Junghoon Kim <jhoon20.kim@samsung.com>
> Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Best Regards,
Jaehoon Chung
> ---
> drivers/usb/gadget/f_thor.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/usb/gadget/f_thor.c b/drivers/usb/gadget/f_thor.c
> index 88fc87f2e9..559ffb759e 100644
> --- a/drivers/usb/gadget/f_thor.c
> +++ b/drivers/usb/gadget/f_thor.c
> @@ -266,8 +266,8 @@ static long long int process_rqt_download(const struct rqt_box *rqt)
>
> switch (rqt->rqt_data) {
> case RQT_DL_INIT:
> - thor_file_size = (unsigned long long int)rqt->int_data[0] +
> - (((unsigned long long int)rqt->int_data[1])
> + thor_file_size = (uint64_t)(uint32_t)rqt->int_data[0] +
> + (((uint64_t)(uint32_t)rqt->int_data[1])
> << 32);
> debug("INIT: total %llu bytes\n", thor_file_size);
> break;
> @@ -280,8 +280,8 @@ static long long int process_rqt_download(const struct rqt_box *rqt)
> break;
> }
>
> - thor_file_size = (unsigned long long int)rqt->int_data[1] +
> - (((unsigned long long int)rqt->int_data[2])
> + thor_file_size = (uint64_t)(uint32_t)rqt->int_data[1] +
> + (((uint64_t)(uint32_t)rqt->int_data[2])
> << 32);
> memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE);
> f_name[F_NAME_BUF_SIZE] = '\0';
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <CGME20201016072733epcas1p4e912e3453206c2747f8d0cd1c8afc1a6@epcas1p4.samsung.com>
2020-10-16 7:29 ` [PATCH] gadget: f_thor: fix wrong file size cast Seung-Woo Kim
2020-10-18 23:25 ` Jaehoon Chung
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