linux-kernel - [PATCH] riscv: Fix range looking for kernel image memblock

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Date:   Mon, 17 Feb 2020 00:28:47 -0500
From:   Alexandre Ghiti <alex@...ti.fr>
To:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>
Cc:     Anup Patel <anup@...infault.org>, Jan Kiszka <jan.kiszka@....de>,
        stable@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Alexandre Ghiti <alex@...ti.fr>
Subject: [PATCH] riscv: Fix range looking for kernel image memblock

When looking for the memblock where the kernel lives, we should check
that the memory range associated to the memblock entirely comprises the
kernel image and not only intersects with it.

Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
---
 arch/riscv/mm/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 965a8cf4829c..fab855963c73 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -131,7 +131,7 @@ void __init setup_bootmem(void)
 	for_each_memblock(memory, reg) {
 		phys_addr_t end = reg->base + reg->size;
 
-		if (reg->base <= vmlinux_end && vmlinux_end <= end) {
+		if (reg->base <= vmlinux_start && vmlinux_end <= end) {
 			mem_size = min(reg->size, (phys_addr_t)-PAGE_OFFSET);
 
 			/*
-- 
2.20.1