Bug 546422 – sys-kernel/gentoo-sources-4.0.0: LZ4 decompress fail

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Christian Xia 2015-04-13 08:49:30 UTC]

Since 4.0.0 kernel is finally released, I tried it at once.

However, I found a kernel bug on x86_64 platform. If I choose lz4 as my kernel compression mode, then the kernel will fail to decompress at startup. I think this should be a  regression bug, and here I attach the related patch, which could fix this issue for me.

Reproducible: Always

Steps to Reproduce:
Just emerge latest sys-kernel/gentoo-sources-4.0.0, and choose lz4 as kernel compression mode.
Actual Results:  
Kernel failed to decompress, system halted

[Comment 1 Christian Xia 2015-04-13 08:50:13 UTC]

Created attachment 401158 [details, diff]
Fix lz4 decompression issue

[Comment 2 fmiz 2015-05-03 17:09:25 UTC]

Christian, THANKS a lot, you saved my everything with this bug report. I was starting to freak out after being unable to boot with linux-4.0.1 with no errors at all.

I CONFIRM that this bug report is STILL true for gentoo-sources-4.0.1, solved my issue temporarily by switching to LZO.

For future reference, how can I catch these kind of errors on early boot? With my config, there was no output at all (EFI stub, start with rEFInd).

Still, thanks.

[Comment 3 Mike Pagano 2015-05-03 23:55:41 UTC]

This is queued up for gentoo-sources-4.0.2. Thanks.

[Comment 4 Mike Pagano 2015-05-08 11:47:07 UTC]

Released in gentoo-sources-4.0.2