On Thu, Jul 26, 2018 at 02:34:55PM +0100, James Morse wrote:

Hi Akashi,

On 24/07/18 07:57, AKASHI Takahiro wrote:

quoted

load_other_segments() is expected to allocate and place all the necessary
memory segments other than kernel, including initrd and device-tree
blob (and elf core header for crash).
While most of the code was borrowed from kexec-tools' counterpart,
users may not be allowed to specify dtb explicitly, instead, the dtb
presented by the original boot loader is reused.

arch_kimage_kernel_post_load_cleanup() is responsible for freeing arm64-
specific data allocated in load_other_segments().

Since v11 you've renamed struct kimage_arch's dtb_buf as dtb, but not changed
the struct. This series doesn't build until patch 12 where you fix it. This will
cause anyone trying to bisect through here a problem.

Right. My last-minute change introduced this screw-up.
I will double-check at v13.

Thanks,
-Takahiro AKASHI

Thanks,

James

quoted

diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h
index e17f0529a882..026f7e408f0c 100644
--- a/arch/arm64/include/asm/kexec.h
+++ b/arch/arm64/include/asm/kexec.h

quoted

+struct kimage_arch {
+	void *dtb_buf;
+	unsigned long dtb_mem;
+};

quoted

diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index c38a8048ed00..b28fbb0659c9 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c

quoted

+int arch_kimage_file_post_load_cleanup(struct kimage *image)
+{
+	vfree(image->arch.dtb);
+	image->arch.dtb = NULL;
+
+	return kexec_image_post_load_cleanup_default(image);
+}