This is a note to let you know that I've just added the patch titled
of: Add check to of_scan_flat_dt() before accessing initial_boot_params
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
of-add-check-to-of_scan_flat_dt-before-accessing-initial_boot_params.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3ec754410cb3e931a6c4920b1a150f21a94a2bf4 Mon Sep 17 00:00:00 2001
From: Tobias Wolf <dev-NTEO@xxxxxxxxx>
Date: Wed, 23 Nov 2016 10:40:07 +0100
Subject: of: Add check to of_scan_flat_dt() before accessing initial_boot_params
From: Tobias Wolf <dev-NTEO@xxxxxxxxx>
commit 3ec754410cb3e931a6c4920b1a150f21a94a2bf4 upstream.
An empty __dtb_start to __dtb_end section might result in
initial_boot_params being null for arch/mips/ralink. This showed that the
boot process hangs indefinitely in of_scan_flat_dt().
Signed-off-by: Tobias Wolf <dev-NTEO@xxxxxxxxx>
Cc: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/14605/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/of/fdt.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -741,9 +741,12 @@ int __init of_scan_flat_dt(int (*it)(uns
const char *pathp;
int offset, rc = 0, depth = -1;
- for (offset = fdt_next_node(blob, -1, &depth);
- offset >= 0 && depth >= 0 && !rc;
- offset = fdt_next_node(blob, offset, &depth)) {
+ if (!blob)
+ return 0;
+
+ for (offset = fdt_next_node(blob, -1, &depth);
+ offset >= 0 && depth >= 0 && !rc;
+ offset = fdt_next_node(blob, offset, &depth)) {
pathp = fdt_get_name(blob, offset, NULL);
if (*pathp == '/')
Patches currently in stable-queue which might be from dev-NTEO@xxxxxxxxx are
queue-4.9/of-add-check-to-of_scan_flat_dt-before-accessing-initial_boot_params.patch