The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 377dc500d253f0b26732b2cb062e89668aef890a # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025082103-exfoliate-wildness-1f7f@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 377dc500d253f0b26732b2cb062e89668aef890a Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda ribalda@chromium.org Date: Mon, 16 Jun 2025 15:29:14 +0000 Subject: [PATCH] media: venus: vdec: Clamp param smaller than 1fps and bigger than 240.
The driver uses "whole" fps in all its calculations (e.g. in load_per_instance()). Those calculation expect an fps bigger than 1, and not big enough to overflow.
Clamp the value if the user provides a param that will result in an invalid fps.
Reported-by: Hans Verkuil hverkuil@xs4all.nl Closes: https://lore.kernel.org/linux-media/f11653a7-bc49-48cd-9cdb-1659147453e4@xs4... Fixes: 7472c1c69138 ("[media] media: venus: vdec: add video decoder files") Cc: stable@vger.kernel.org Tested-by: Bryan O'Donoghue bryan.odonoghue@linaro.org # qrb5615-rb5 Reviewed-by: Bryan O'Donoghue bryan.odonoghue@linaro.org Signed-off-by: Ricardo Ribalda ribalda@chromium.org [bod: Change "parm" to "param"] Signed-off-by: Bryan O'Donoghue bod@kernel.org Signed-off-by: Hans Verkuil hverkuil@xs4all.nl
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h index b412e0c5515a..5b1ba1c69adb 100644 --- a/drivers/media/platform/qcom/venus/core.h +++ b/drivers/media/platform/qcom/venus/core.h @@ -28,6 +28,8 @@ #define VIDC_RESETS_NUM_MAX 2 #define VIDC_MAX_HIER_CODING_LAYER 6
+#define VENUS_MAX_FPS 240 + extern int venus_fw_debug;
struct freq_tbl { diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c index 99ce5fd41577..fca27be61f4b 100644 --- a/drivers/media/platform/qcom/venus/vdec.c +++ b/drivers/media/platform/qcom/venus/vdec.c @@ -481,11 +481,10 @@ static int vdec_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a) us_per_frame = timeperframe->numerator * (u64)USEC_PER_SEC; do_div(us_per_frame, timeperframe->denominator);
- if (!us_per_frame) - return -EINVAL; - + us_per_frame = clamp(us_per_frame, 1, USEC_PER_SEC); fps = (u64)USEC_PER_SEC; do_div(fps, us_per_frame); + fps = min(VENUS_MAX_FPS, fps);
inst->fps = fps; inst->timeperframe = *timeperframe;