On 01/10/2017 06:28 PM, Jan Kiszka wrote:
> On 2017-01-10 18:05, Ralf Ramsauer wrote:
>> Hi,
>>
>> I'm experiencing some issues with Linux inmates on ARM on my Jetson TK1
>> since inmate kernel 4.9.
>>
>> While the same .config works fine with 4.8, since 4.9 I get the
>> following error message:
>>
>> [ 0.311186] Unpacking initramfs...
>> [ 0.311211] Initramfs unpacking failed: junk in compressed archive
>>
>> and of course, a few messages later this is followed by an 'unable to
>> mount rootfs'.
>>
>> Now, the point is that my initramfs is actually an uncompressed one (I'm
>> using buildroot for generating it). There is no point in compressing it.
>
> Mine are uncompressed as well, hmm...
>
>>
>> But even if I'm gzipping it before: I still get the same error message
>> (while 4.8 is able to successfully boot the compressed archive).
>> Recompressing it with cpio doesn't solve the issue as well, so I doubt
>> that my archive is broken...
>>
>> The code producing this error message (in init/initramfs.c) wasn't
>> touched since 09/15, so this must be something else...
>>
>> Anyone any suggestions?
>
> Kernel too big? Try playing with our magic formula:
Nope, kernel is not really too big:
3.3M zImage-inmate-4.8 (working one)
3.4M zImage-inmate-4.9
so it just got ~100KB larger.
>
> # leave sufficient space between the kernel and the initrd
> image_size += kernel_size * 4
>
> (this sucks...)
Thanks, and in deed some magic happened! This did the trick:
diff --git a/tools/jailhouse-cell-linux b/tools/jailhouse-cell-linux
index 790f474..0d195a3 100755
--- a/tools/jailhouse-cell-linux
+++ b/tools/jailhouse-cell-linux
@@ -310,7 +310,7 @@ class ARMCommon:
ramdisk_size =
page_align(os.fstat(args.initrd.fileno()).st_size)
# leave sufficient space between the kernel and the initrd
image_size += kernel_size * 4
- kernel_size *= 5
+ kernel_size *= 6
if not args.dtb:
print('No device tree specified', file=sys.stderr)
Though I don't really understand why it now works and what I actually
changed. :-)
Params before:
[...] /root/zImage-inmate-4.9 -a 0xe8002000 /root/rootfs.cpio -a
0xe908d000 /dev/null -a 0xe8000000
Params after:
[...] /root/zImage-inmate-4.9 -a 0xe8002000 /root/rootfs.cpio -a
0xe93dc000 /dev/null -a 0xe8000000
Seems that there is now more (free) space between the kernel and the initrd.
>
> I had an offlist report on x86 issues as well.
>
> Jan
>
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