This is a note to let you know that I've just added the patch titled
mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mailbox-arm_mhuv2-skip-calling-kfree-with-invalid-pointer.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6b50df2b8c208a04d44b8df5b7baaf668ceb8fc3 Mon Sep 17 00:00:00 2001
From: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Date: Mon, 22 Feb 2021 12:48:06 +0530
Subject: mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer
From: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
commit 6b50df2b8c208a04d44b8df5b7baaf668ceb8fc3 upstream.
It is possible that 'data' passed to kfree() is set to a error value
instead of allocated space. Make sure it doesn't get called with invalid
pointer.
Fixes: 5a6338cce9f4 ("mailbox: arm_mhuv2: Add driver")
Cc: v5.11 <stable@xxxxxxxxxxxxxxx> # v5.11
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Jassi Brar <jaswinder.singh@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mailbox/arm_mhuv2.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mailbox/arm_mhuv2.c
+++ b/drivers/mailbox/arm_mhuv2.c
@@ -699,7 +699,9 @@ static irqreturn_t mhuv2_receiver_interr
ret = IRQ_HANDLED;
}
- kfree(data);
+ if (!IS_ERR(data))
+ kfree(data);
+
return ret;
}
Patches currently in stable-queue which might be from viresh.kumar@xxxxxxxxxx are
queue-5.11/opp-correct-debug-message-in-_opp_add_static_v2.patch
queue-5.11/cpufreq-brcmstb-avs-cpufreq-free-resources-in-error-.patch
queue-5.11/cpufreq-brcmstb-avs-cpufreq-fix-resource-leaks-in-re.patch
queue-5.11/mailbox-arm_mhuv2-skip-calling-kfree-with-invalid-pointer.patch
