From: Xunlei Pang <xlpang@redhat.com>
Date: Wed, 20 Jan 2016 23:00:31 +0000 (-0800)
Subject: kexec: set KEXEC_TYPE_CRASH before sanity_check_segment_list()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cdf4b3fa03bab157d2d70d4de65bb7ae319b084f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

kexec: set KEXEC_TYPE_CRASH before sanity_check_segment_list()

sanity_check_segment_list() checks KEXEC_TYPE_CRASH flag to ensure all the
segments of the loaded crash kernel are within the kernel crash resource
limits, so set the flag beforehand.

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/kexec.c b/kernel/kexec.c
index d873b64fbddc..ee70aef5cd81 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -63,16 +63,16 @@ static int kimage_alloc_init(struct kimage **rimage, unsigned long entry,
 	if (ret)
 		goto out_free_image;
 
-	ret = sanity_check_segment_list(image);
-	if (ret)
-		goto out_free_image;
-
-	 /* Enable the special crash kernel control page allocation policy. */
 	if (kexec_on_panic) {
+		/* Enable special crash kernel control page alloc policy. */
 		image->control_page = crashk_res.start;
 		image->type = KEXEC_TYPE_CRASH;
 	}
 
+	ret = sanity_check_segment_list(image);
+	if (ret)
+		goto out_free_image;
+
 	/*
 	 * Find a location for the control code buffer, and add it
 	 * the vector of segments so that it's pages will also be