Re: [4.1-rc1][Hibernation failed] bisect result included
From: Yu Chen
Date: Mon May 04 2015 - 03:46:32 EST
On 05/04/2015 02:24 AM, Martin Steigerwald wrote:
Am Sonntag, 3. Mai 2015, 15:54:39 schrieb Chen, Yu C:
Hi,all,
Hello!
When we are doing QA test, a hibernation failor was found on latest kernel 4.1-rc1,
resume from hibernation failed with the following error:
PM: Hibernation image not present or could not be loaded.
Bisect shows following commit might trigger this problem:
commit 283e7ad0241155710f99a9f39d13313a53336926
The reason for failor is that, some distribution use klibc in initrd
to restore the image, and klibc will provide kernel with the device
format of major:minor:offset,
for example, 8:3:0 represents a swap partition, and klibc will
echo 8:3:0 > /sys/power/resume to resume the system manually.
However in current implementation, format of 8:3:0 will be regarded
as an invalid device, so restoring from hibernation failed.
Do we need to add support for device format like 8:3:0?
I'm happy to debug more specifically if you can let me know what
would be of use, and I've also attached a temporary patch
for this problem, not sure if it is suitable, thanks.
Wow, great.
I just reported this as well, but you bisected it already.
Oh, I saw your thread :)
So seems Debian´s initramfs uses klibc. Appears so:
The place where klibc stores the major:minor:offset to sysfs is:
klibc/usr/kinit/resume/resumelib.c: resume
https://wiki.debian.org/initramfs
merkaba:/boot> lsinitramfs -l initrd.img-4.0.1-tp520-btrfs-trim-norace+ | egrep "klibc|libc.so"
-rwxr-xr-x 1 root root 1729984 Apr 15 02:01 lib/x86_64-linux-gnu/libc.so.6
-rwxr-xr-x 1 root root 71416 Oct 5 2014 lib/klibc-IpHGKKbZiB_yZ7GPagmQz2GwVAQ.so
It seems to contain a glibc as well.
Ciao,
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