[PATCH 1/1] platform: generic: allwinner: avoid buffer overrun

[Andreas Schwab]

The actual bug is in plic_priority_save/restore.

diff --git a/lib/utils/irqchip/plic.c b/lib/utils/irqchip/plic.c
index d633514..901ffaa 100644
--- a/lib/utils/irqchip/plic.c
+++ b/lib/utils/irqchip/plic.c
@@ -39,14 +39,14 @@ static void plic_set_priority(const struct plic_data *plic, u32 source, u32 val)
 void plic_priority_save(const struct plic_data *plic, u8 *priority, u32 num)
 {
 	for (u32 i = 1; i <= num; i++)
-		priority[i] = plic_get_priority(plic, i);
+		priority[i - 1] = plic_get_priority(plic, i);
 }
 
 void plic_priority_restore(const struct plic_data *plic, const u8 *priority,
 			   u32 num)
 {
 	for (u32 i = 1; i <= num; i++)
-		plic_set_priority(plic, i, priority[i]);
+		plic_set_priority(plic, i, priority[i - 1]);
 }
 
 static u32 plic_get_thresh(const struct plic_data *plic, u32 cntxid)

-- 
Andreas Schwab, schwab at linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."