Bug 190221

Summary:	regression from commit 4c63c2454eff996
Product:	File System	Reporter:	Rolf Leggewie (bugzilla.kernel.org)
Component:	btrfs	Assignee:	Josef Bacik (josef)
Status:	RESOLVED CODE_FIX
Severity:	normal	CC:	dsterba
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	4.9.0	Subsystem:
Regression:	No	Bisected commit-id:

Description Rolf Leggewie 2016-12-13 08:47:40 UTC

During triage of https://bugs.launchpad.net/bugs/1619918 it was found out today that apparently commit https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c63c2454eff996 introduces a regression when running an amd64 kernel with a system that is otherwise mostly i386.

I opened a ticket on launchpad in September since I was unable to use lsattr when having an amd64 kernel and i386 e2fsprogs.  The proposed and committed fix 4c63c2454eff996 was backported and introduced regressions into the Ubuntu trusty 3.13.0-97 kernel, one of which was confirmed to be present in last week's mainline as well.

With kernel 4.9.0 I can no longer take a btrfs snapshot of my system.  The error message is "Inappropriate ioctl for device", very similar to the original problem with lsattr before 4c63c2454eff996.

Comment 1 Rolf Leggewie 2017-08-31 14:21:07 UTC

I believe this problem was fixed (I have come across a number of other issues, though, when running i386-userland with an amd64-kernel)