6.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Wilczynski <m.wilczynski@xxxxxxxxxxx>
[ Upstream commit db049866943a38bf46a34fa120d526663339d7a5 ]
The functions th1520_mbox_suspend_noirq and th1520_mbox_resume_noirq are
intended to save and restore the interrupt mask registers in the MBOX
ICU0. However, the array used to store these registers was incorrectly
sized, leading to memory corruption when accessing all four registers.
This commit corrects the array size to accommodate all four interrupt
mask registers, preventing memory corruption during suspend and resume
operations.
Fixes: 5d4d263e1c6b ("mailbox: Introduce support for T-head TH1520 Mailbox driver")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Closes: https://lore.kernel.org/all/a99e72be-8490-4960-ad26-cbfef6af238f@stanley.mountain/
Signed-off-by: Michal Wilczynski <m.wilczynski@xxxxxxxxxxx>
Signed-off-by: Jassi Brar <jassisinghbrar@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/mailbox/mailbox-th1520.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mailbox/mailbox-th1520.c b/drivers/mailbox/mailbox-th1520.c
index e16e7c85ee3cd..a6b2aa9ae9520 100644
--- a/drivers/mailbox/mailbox-th1520.c
+++ b/drivers/mailbox/mailbox-th1520.c
@@ -41,7 +41,7 @@
#ifdef CONFIG_PM_SLEEP
/* store MBOX context across system-wide suspend/resume transitions */
struct th1520_mbox_context {
- u32 intr_mask[TH_1520_MBOX_CHANS - 1];
+ u32 intr_mask[TH_1520_MBOX_CHANS];
};
#endif
--
2.39.5
