On Fri, Jun 04, 2021 at 06:37:49PM +0000, Dexuan Cui wrote:
From: Dexuan Cui Sent: Friday, June 4, 2021 11:17 AM
...
I've heard a similar report from Vineeth but we didn't get to the bottom of this.
I have just tried reverting the commit mentioned above and it solves the GUI freeze I was also seeing. Previously, login screen was just freezing, but VM was accessible through ssh. With the above commit reverted, I can login to Gnome.
Looks like I am also experiencing the same bug mentioned here.
Thanks, Vineeth
As Matthew mentioned, this is a known issue: https://lwn.net/ml/linux-kernel/YLZEhv0cpZp8uVE3@casper.infradead.org/
Matthew has reverted ccf953d8f3d6: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... 0b78f8bcf4951af30b0ae83ea4fad27d641ab617 so the latest mainline should work now.
Thanks, Dexuan
Hi Matthew, With today's latest mainline 16f0596fc1d78a1f3ae4628cff962bb297dc908c, the Xorg works again in Linux VM on Hyper-V, but when I reboot the VM, I always see a lot of "BUG: Bad page state in process Xorg " warnings (there are about 60 such warnings) before the VM reboots.
BTW, I happen to have an older Mar-28 mainline kernel (36a14638f7c0654), which has the same warnings.
Any idea which change introduced the warnings?
Looks like someone forgot to call fb_deferred_io_cleanup()?