From 8d4f11c2033d0621f22a1501d92616596a8d1a62 Mon Sep 17 00:00:00 2001
From: Purna Chandra Mandal <purna.mandal@microchip.com>
Date: Wed, 20 Jan 2016 14:07:39 +0530
Subject: [PATCH] bootm: fix size arg of flush_cache() in bootm_load_os().
Variable _load_end_ points to end address of uncompressed buffer
(*not* uncomress_buffer_end / sizeof(ulong)), so multipling uncompressed
size with sizeof(ulong) is grossly incorrect in flush_cache().
It might lead to access of address beyond valid memory range and hang the CPU.
Tested on MIPS architecture by using compressed(gzip, lzma)
and uncompressed uImage.
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
---
common/bootm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/common/bootm.c b/common/bootm.c
index 58936ca497..99d574db2c 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -435,7 +435,7 @@ static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
return err;
}
- flush_cache(load, (*load_end - load) * sizeof(ulong));
+ flush_cache(load, *load_end - load);
debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
--
2.39.5