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SubjectRe: Regression of v4.6-rc vs. v4.5: hangs after a few minutes after boot
On Apr 26 Stefan Richter wrote:
> v4.6-rc solidly hangs after a short while after boot, login to X11, and
> doing nothing much remarkable on the just brought up X desktop.
>
> Hardware: x86-64, E3-1245 v3 (Haswell),
> mainboard Supermicro X10SAE,
> using integrated Intel graphics (HD P4600, i915 driver),
> C226 PCH's AHCI and USB 2/3, ASMedia ASM1062 AHCI,
> Intel LAN (i217, igb driver),
> several IEEE 1394 controllers, some of them behind
> PCIe bridges (IDT, PLX) or PCIe-to-PCI bridges (TI, Tundra)
> and one PCI-to-CardBus bridge (Ricoh)
>
> kernel.org kernel, Gentoo Linux userland
>
> 1. known good: v4.5-rc5 (gcc 4.9.3)
> known bad: v4.6-rc2 (gcc 4.9.3), only tried one time
>
> 2. known good: v4.5.2 (gcc 5.2.0)
> known bad: v4.6-rc5 (gcc 5.2.0), only tried one time
>
> I will send my linux-4.6-rc5/.config in a follow-up message.

After it proved impossible to capture an oops through netconsole, I
started git bisect. This will apparently take almost a week, as git
estimated 13 bisection steps and I will be allowing about 12 hours of
uptime as a sign for a good kernel. (In my four or five tests of bad
kernels before I started bisection, they hung after 3 minutes...5.5 hours
uptime, with no discernible difference in workload. Maybe 12 h cutoff is
even too short...)
--
Stefan Richter
-======----- -=-- ===-=
http://arcgraph.de/sr/

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