linux-kernel - Re: 2.6.36/2.6.37: broken compatibility with userspace input-utils ?

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Message-ID: <4D40C3D7.90608@teksavvy.com>
Date:	Wed, 26 Jan 2011 20:01:11 -0500
From:	Mark Lord <kernel@...savvy.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-input@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: 2.6.36/2.6.37: broken compatibility with userspace input-utils
 ?

On 11-01-26 10:05 AM, Mark Lord wrote:
> On 11-01-25 09:00 PM, Dmitry Torokhov wrote:
..
>> I wonder if the patch below is all that is needed...
>
> Nope. Does not work here:
>
> $ lsinput
> protocol version mismatch (expected 65536, got 65537)
>

Heh.. I just noticed something *new* in the bootlogs on my system:

kernel: Registered IR keymap rc-rc5-tv
udevd-event[6438]: run_program: '/usr/bin/ir-keytable' abnormal exit
kernel: input: i2c IR (Hauppauge) as /devices/virtual/rc/rc0/input7
kernel: ir-keytable[6439]: segfault at 8 ip 00000000004012d2 sp 00007fff6d43ca60
error 4 in ir-keytable[400000+7000]
kernel: rc0: i2c IR (Hauppauge) as /devices/virtual/rc/rc0
kernel: ir-kbd-i2c: i2c IR (Hauppauge) detected at i2c-0/0-0018/ir0 [ivtv i2c
driver #0]

That's udev invoking ir-keyboard when the ir-kbd-i2c kernel module is loaded,
and that is also ir-keyboard (userspace) segfaulting when run.

That behaviour is new, with the proposed "fix" patch from this thread.
So the "fix" itself appears to also break userspace.

The ir-keyboard program reports: IR keytable control version 0.8.2

Cheers
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