From: "Pali Rohár" <pali.rohar@gmail.com>
To: Leon Yu <leon@leonyu.net>
Cc: "Guenter Roeck" <linux@roeck-us.net>,
"Jean Delvare" <jdelvare@suse.com>,
"Jan C Peters" <jcpeters89@gmail.com>,
"Thorsten Leemhuis" <fedora@leemhuis.info>,
"David Santamaría Rogado" <howl.nsp@gmail.com>,
"Peter Saunderson" <peteasa@gmail.com>,
"Tolga Cakir" <cevelnet@gmail.com>,
"Austin S. Hemmelgarn" <ahferroin7@gmail.com>,
Mario_Limonciello@dell.com,
"Gabriele Mazzotta" <gabriele.mzt@gmail.com>,
"Michał Kępień" <kernel@kempniu.pl>,
"Dakota Whipple" <dakotajaywhipple@gmail.com>,
linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/6] dell-smm-hwmon fixes
Date: Sun, 19 Jun 2016 00:44:20 +0200 [thread overview]
Message-ID: <201606190044.21035@pali> (raw)
In-Reply-To: <CA+vQ2zCoGhLT2PUUhcuggJ3oE9Z6vfUW=Z1wgm8Ozz3XdnQoxA@mail.gmail.com>
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Thanks for testing! It took too long, but bugs in vendor SMM code are
hard to detect and probably impossible to fix. So I would call this
patch just as "workaround" and not proper bug fix...
On Saturday 18 June 2016 23:58:19 Leon Yu wrote:
> Just installed on "Inspiron 580", appears to have fixed the problem.
>
> On Sat, Jun 18, 2016 at 12:54 PM, Guenter Roeck <linux@roeck-us.net>
> wrote:
> > On 06/18/2016 08:26 AM, Pali Rohár wrote:
> >> On Saturday 18 June 2016 17:13:59 Guenter Roeck wrote:
> >>> On 06/17/2016 03:54 PM, Pali Rohár wrote:
> >>>> I'm sending all my dell-smm-hwmon patches in one series, because
> >>>> due to changes in code other patches depends on previous.
> >>>>
> >>>> First two patches fixes problem with old /proc/i8k file. Second
> >>>> is security fix and should be backported to all stable kernels
> >>>> (that problem was there always). I tested i8kctl tool (from
> >>>> i8kutils package) that it still works with these patches.
> >>>> Without root access for those security operations just showes
> >>>> '?' or '-1'.
> >>>>
> >>>> Third and fourth patches try to fix problem on machines with
> >>>> broken SMM/BIOS when calling function fan_type().
> >>>>
> >>>> Fifth is new feature and last sixth useful for debugging.
> >>>>
> >>>> Pali Rohár (6):
> >>>> hwmon: (dell-smm) Fail in ioctl I8K_BIOS_VERSION when bios
> >>>> version is
> >>>>
> >>>> not a number
> >>>>
> >>>> hwmon: (dell-smm) Restrict fan control and serial number to
> >>>>
> >>>> CAP_SYS_ADMIN by default
> >>>>
> >>>> hwmon: (dell-smm) Disallow fan_type() calls on broken
> >>>> machines hwmon: (dell-smm) Cache fan_type() calls and
> >>>> change fan detection hwmon: (dell-smm) Detect fan with
> >>>> index=2 hwmon: (dell-smm) In debug mode log duration of SMM
> >>>> calls
> >>>>
> >>>> drivers/hwmon/dell-smm-hwmon.c | 122
> >>>> ++++++++++++++++++++++++++++++++-------- 1 file changed, 99
> >>>> insertions(+), 23 deletions(-)
> >>>
> >>> Pali,
> >>>
> >>> You asked for additional testing, so I am not sure what you
> >>> expect me to do.
> >>>
> >>> Which of the patches can/should I apply now ?
> >>>
> >>> Guenter
> >>
> >> Test 3/6 and 4/6 patches on affected Dell machines. I CCed all
> >> people who tried to debug those bugs, so need confirmation from
> >> them that after applying 3/6 and 4/6 patches, erratic fan
> >> behaviour is not there...
> >>
> >> But because those two patches depends on previous, it is needed to
> >> test whole series...
> >>
> >> This doesn't tell me which patches to apply now. The first two ?
> >
> > Guenter
--
Pali Rohár
pali.rohar@gmail.com
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next prev parent reply other threads:[~2016-06-18 22:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 22:54 [PATCH 0/6] dell-smm-hwmon fixes Pali Rohár
2016-06-17 22:54 ` [PATCH 1/6] hwmon: (dell-smm) Fail in ioctl I8K_BIOS_VERSION when bios version is not a number Pali Rohár
2016-06-18 20:00 ` Guenter Roeck
2016-06-17 22:54 ` [PATCH 2/6] hwmon: (dell-smm) Restrict fan control and serial number to CAP_SYS_ADMIN by default Pali Rohár
2016-06-18 20:00 ` Guenter Roeck
2016-06-17 22:54 ` [PATCH 3/6] hwmon: (dell-smm) Disallow fan_type() calls on broken machines Pali Rohár
2016-06-18 20:08 ` Guenter Roeck
2016-06-18 22:46 ` Pali Rohár
2016-06-17 22:54 ` [PATCH 4/6] hwmon: (dell-smm) Cache fan_type() calls and change fan detection Pali Rohár
2016-06-19 0:01 ` Tolga Cakir
2016-06-17 22:54 ` [PATCH 5/6] hwmon: (dell-smm) Detect fan with index=2 Pali Rohár
2016-06-19 0:02 ` Tolga Cakir
2016-06-17 22:54 ` [PATCH 6/6] hwmon: (dell-smm) In debug mode log duration of SMM calls Pali Rohár
2016-06-18 12:21 ` [PATCH 0/6] dell-smm-hwmon fixes Pali Rohár
2016-06-18 15:13 ` Guenter Roeck
2016-06-18 15:26 ` Pali Rohár
2016-06-18 16:54 ` Guenter Roeck
2016-06-18 22:39 ` Pali Rohár
2016-06-20 9:12 ` Pali Rohár
2016-06-20 13:24 ` Guenter Roeck
2016-06-23 12:16 ` Pali Rohár
2016-06-23 13:51 ` Guenter Roeck
[not found] ` <CA+vQ2zCoGhLT2PUUhcuggJ3oE9Z6vfUW=Z1wgm8Ozz3XdnQoxA@mail.gmail.com>
2016-06-18 22:44 ` Pali Rohár [this message]
2016-06-22 8:02 ` Michał Kępień
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