Thread (12 messages) 12 messages, 5 authors, 2022-12-09

Re: [PATCH v8 3/3] ASoC: SOF: Fix deadlock when shutdown a frozen userspace

From: Oliver Neukum <oneukum@suse.com>
Date: 2022-12-01 12:29:07
Also in: alsa-devel, kexec, linux-efi, linux-hyperv, linux-pci, linux-pm, lkml, stable, xen-devel

On 01.12.22 12:08, Ricardo Ribalda wrote:
If we are shutting down due to kexec and the userspace is frozen, the
system will stall forever waiting for userspace to complete.

Do not wait for the clients to complete in that case.
Hi,

I am afraid I have to state that this approach is bad in every case,
not just this corner case. It basically means that user space can stall
the kernel for an arbitrary amount of time. And we cannot have that.

	Regards
		Oliver
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