Control: tag -1 unreproducible
On Thu, 2013-03-28 at 19:42 -0400, Joel Diaz wrote:
> After looking at this some more, my bisect has left me between these two
> commits:
>
> The last good commit:
> [db9d8c60266a5010e905829e10cd722519e14777] Merge
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
>
> The last bad commit:
> [45e7715922217493f01c8238d8c9eff5c3fea5a2] Merge tag
> 'pinctrl-for-v3.7-late' of
> git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
>
> Both of these show up as 3.6.0-rc6 kernels
>
> Bisecting these leaves me at:
> [70418e6efcf4f8652cc08e3f2ab8ae35f0948fd9] NFC: pn533: Fix mem leak in
> pn533_in_dep_link_up
>
> This leaves me with a 3.6.0-rc1 kernel (according to the root Makefile)
> that behaves far differently than the two first commits listed above. I
> don't have much confidence in using the bisect since things that worked
> before (like X Windows) don't work, and there's all these 'tty_init_dev:
> XX callbacks suppressed' messages that weren't there before.
>
> So I pulled each individual patch between the last good and last bad
> commit and started applying them individually. It looks like commit
> '38c1a01cf10c6e4049b4ffbd4a6af655df2a46e1 wireless: add back sysfs
> directory' is the one that fixes things.
But that's fixing an *entirely* different problem.
> After applying this patch, the machine will run for days without
> incident. Reverting the patch lets the failure appear in under 1 hour.
>
> Now looking at the Wheezy 3.2.x kernel, the code from that patch is
> already included, but some of the code is hidden behind
> CONFIG_WIRELESS_EXT_SYSFS and Wheezy's config file has '#
> CONFIG_WIRELESS_EXT_SYSFS is not set' where my working 3.7.x kernel has
> the equivalent setting ('CONFIG_CFG80211') enabled to pull in the code.
> Flipping the Wheezy config to 'y' and rebuilding has allowed the machine
> to run the Wheezy 3.2.39 kernel for a full day without incident.
This option does not affect the behaviour of the driver and therefore
cannot have fixed the bug.
Until you find a *reliable* way to reproduce the bug, bisection cannot
find the fix. I'm sorry I can't be more helpful.
Ben.
--
Ben Hutchings
I'm not a reverse psychological virus. Please don't copy me into your sig.
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