From: Viresh Kumar <[email protected]>
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 <[email protected]> # v5.11
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Viresh Kumar <[email protected]>
Signed-off-by: Jassi Brar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
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;
}
