From: "Luis R. Rodriguez" <mcgrof@kernel.org>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
"Fuzzey, Martin" <mfuzzey@parkeon.com>,
Andy Lutomirski <luto@kernel.org>,
"Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
Linux API <linux-api@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Greg KH <gregkh@linuxfoundation.org>,
Daniel Wagner <wagi@monom.org>,
David Woodhouse <dwmw2@infradead.org>,
jewalt@lgsinnovations.com, rafal@milecki.pl,
Arend Van Spriel <arend.vanspriel@broadcom.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Li, Yi" <yi1.li@linux.intel.com>,
atull@opensource.altera.com,
Moritz Fischer <moritz.fischer@ettus.com>,
Petr Mladek <pmladek@suse.com>,
Johannes Berg <johannes.berg@intel.com>,
Emmanuel Grumbach <emmanuel.grumbach@intel.com>,
Luca Coelho <luciano.coelho@intel.com>,
Kalle Valo <kvalo@codeaurora.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
David Howells <dhowells@redhat.com>,
Peter Jones <pjones@redhat.com>,
Hans de G oede <hdegoede@redhat.com>,
Alan Cox <alan@linux.intel.com>, "Ted Ts'o" <tytso@mit.edu>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] firmware: fix sending -ERESTARTSYS due to signal on fallback
Date: Fri, 26 May 2017 14:32:31 -0700 [thread overview]
Message-ID: <CAB=NE6Wh9inuA-R9-zegnvJV=s_6o_doMNDOhBVhYn4ZQ_Ku5Q@mail.gmail.com> (raw)
In-Reply-To: <CAKdAkRTrcTVOAP5GK-R=Au_tL5WqSn5UkQEzNe5NcCWXS8mbtA@mail.gmail.com>
On Fri, May 26, 2017 at 2:26 PM, Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
> On Fri, May 26, 2017 at 12:46 PM, Luis R. Rodriguez <mcgrof@kernel.org> wrote:
>> On Fri, May 26, 2017 at 06:09:29AM -0500, Eric W. Biederman wrote:
>>> "Fuzzey, Martin" <mfuzzey@parkeon.com> writes:
>>> >>>> Maybe SIGCHLD shouldn't interrupt firmware loading?
>>> >
>>> > I don't think there's a way of doing that without disabling all
>>> > signals (ie using the non interruptible wait variants).
>>> > It used to be that way (which is why I only ran into this after
>>> > updating from an ancient 3.16 kernel to a slightly less ancient 4.4)
>>> > But there are valid reasons for wanting to be able to interrupt
>>> > firmware loading (like being able to kill the userspace helper)
>>>
>>> Perhaps simply using a killable wait and not a fully interruptible
>>> wait would be better?
>>
>> What do you mean by a killable wait BTW?
>
> https://lwn.net/Articles/288056/
>
> I think only interrupting firmware loading with fatal signals would
> make a lot of sense.
>
>>
>> ret = swait_event_interruptible_timeout() is being used right now.
>
> It looks like we are missing swait_event_killable*(), but I do not
> think it would be hard to add.
What should we do for stable ? Is this a *stable* issue ?
Luis
next prev parent reply other threads:[~2017-05-27 1:17 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-23 13:16 [PATCH] firmware: request_firmware() should propagate -ERESTARTSYS Martin Fuzzey
2017-05-23 13:31 ` Greg Kroah-Hartman
2017-05-23 14:32 ` Martin Fuzzey
2017-05-23 19:55 ` Luis R. Rodriguez
2017-05-24 20:56 ` Luis R. Rodriguez
2017-05-24 21:40 ` [PATCH v2] firmware: fix sending -ERESTARTSYS due to signal on fallback Luis R. Rodriguez
2017-05-24 22:00 ` Andy Lutomirski
2017-05-24 22:38 ` Luis R. Rodriguez
2017-05-25 4:13 ` Andy Lutomirski
2017-05-25 8:28 ` Fuzzey, Martin
2017-05-26 11:09 ` Eric W. Biederman
2017-05-26 19:46 ` Luis R. Rodriguez
2017-05-26 21:26 ` Dmitry Torokhov
2017-05-26 21:32 ` Luis R. Rodriguez [this message]
2017-05-26 21:55 ` Dmitry Torokhov
2017-06-05 20:24 ` Luis R. Rodriguez
2017-06-06 9:04 ` Martin Fuzzey
2017-06-06 16:34 ` Luis R. Rodriguez
2017-06-06 17:52 ` Luis R. Rodriguez
2017-06-06 14:53 ` Alan Cox
2017-06-06 16:47 ` Luis R. Rodriguez
2017-06-06 17:54 ` Luis R. Rodriguez
2017-06-06 22:11 ` Theodore Ts'o
2017-06-07 0:22 ` Luis R. Rodriguez
2017-06-07 4:56 ` Andy Lutomirski
2017-06-07 6:25 ` Dmitry Torokhov
2017-06-07 12:25 ` Alan Cox
2017-06-07 17:15 ` Luis R. Rodriguez
2017-06-09 1:14 ` Andy Lutomirski
2017-06-09 1:33 ` Luis R. Rodriguez
2017-06-09 21:29 ` Luis R. Rodriguez
2017-05-26 19:40 ` Luis R. Rodriguez
2017-05-26 20:23 ` Fuzzey, Martin
2017-05-26 20:52 ` Luis R. Rodriguez
2017-06-07 17:08 ` Luis R. Rodriguez
2017-06-07 17:54 ` Martin Fuzzey
2017-06-09 1:10 ` Luis R. Rodriguez
2017-06-09 1:57 ` Luis R. Rodriguez
2017-06-09 7:40 ` Martin Fuzzey
2017-06-09 21:12 ` Luis R. Rodriguez
2017-06-09 22:55 ` Luis R. Rodriguez
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAB=NE6Wh9inuA-R9-zegnvJV=s_6o_doMNDOhBVhYn4ZQ_Ku5Q@mail.gmail.com' \
--to=mcgrof@kernel.org \
--cc=alan@linux.intel.com \
--cc=arend.vanspriel@broadcom.com \
--cc=atull@opensource.altera.com \
--cc=dhowells@redhat.com \
--cc=dmitry.torokhov@gmail.com \
--cc=dwmw2@infradead.org \
--cc=ebiederm@xmission.com \
--cc=emmanuel.grumbach@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=hdegoede@redhat.com \
--cc=jewalt@lgsinnovations.com \
--cc=johannes.berg@intel.com \
--cc=keescook@chromium.org \
--cc=kvalo@codeaurora.org \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luciano.coelho@intel.com \
--cc=luto@kernel.org \
--cc=mfuzzey@parkeon.com \
--cc=moritz.fischer@ettus.com \
--cc=mtk.manpages@gmail.com \
--cc=peterz@infradead.org \
--cc=pjones@redhat.com \
--cc=pmladek@suse.com \
--cc=rafal@milecki.pl \
--cc=rjw@rjwysocki.net \
--cc=takahiro.akashi@linaro.org \
--cc=torvalds@linux-foundation.org \
--cc=tytso@mit.edu \
--cc=wagi@monom.org \
--cc=yi1.li@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).