Bug#822651: linux-image-4.5.0-1-amd64: Spews into /dev/kmsg, causing unresponsive journald

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#822651: linux-image-4.5.0-1-amd64: Spews into /dev/kmsg, causing unresponsive journald
Date	2016-05-02 21:30 +0200
Message-ID	<rurHz-113-7@gated-at.bofh.it> (permalink)
References	<rrZZ8-7nE-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On Mon, 2016-04-25 at 18:18 -0700, Ben Longbons wrote:
> Package: src:linux
> Version: 4.5.1-1
> Severity: critical
> Justification: breaks the whole system
> 
> Dear Maintainer,
> 
> Apologies for not following the instructions to run the kernel while
> reporting the bug, but the system was barely responsive enough for me to
> extract any info.
> 
> Whenever my system is started with the 4.5 kernel, systemd-journald uses
> about 120% CPU and still complains about dropping messages.
> 
> The 4.4 kernel works properly.
> 
> I managed to get coredumps of journald every 10 seconds for the whole
> 3-minute period it was allowed to run, but I doubt it will be useful
> given the `dmesg` output.
> 
> -- Package-specific info:
> ** Kernel log: (manually saved from previous boot, limited lines because
> just running `dmesg` would never stop).
> [ 1686.225851] ACPI Error: No handler or method for GPE 13, disabling event (20160108/evgpe-790)
> [ 1686.226059] ACPI Error: No handler or method for GPE 11, disabling event (20160108/evgpe-790)
> [ 1686.226270] ACPI Error: No handler or method for GPE 11, disabling event (20160108/evgpe-790)
[...]

This sounds similar to bug #823146.  Does the system work properly if
you add "modprobe.blacklist=sp5100_tco" to the kernel command line?

Ben.

-- 
Ben Hutchings
Life is what happens to you while you're busy making other plans.
                                                               - John Lennon

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Bug#822651: linux-image-4.5.0-1-amd64: Spews into /dev/kmsg, causing unresponsive journald Ben Hutchings <ben@decadent.org.uk> - 2016-05-02 21:30 +0200

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