Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1299317 > unrolled thread
| Started by | Andy Lutomirski <luto@kernel.org> |
|---|---|
| First post | 2015-12-30 12:20 +0100 |
| Last post | 2016-01-01 00:10 +0100 |
| Articles | 4 — 4 participants |
Back to article view | Back to linux.kernel
Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" Andy Lutomirski <luto@kernel.org> - 2015-12-30 12:20 +0100
Re: Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" Nicolai Stange <nicstange@gmail.com> - 2015-12-30 12:40 +0100
Re: Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" Eric Dumazet <eric.dumazet@gmail.com> - 2015-12-30 15:00 +0100
Re: Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-01 00:10 +0100
| From | Andy Lutomirski <luto@kernel.org> |
|---|---|
| Date | 2015-12-30 12:20 +0100 |
| Subject | Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" |
| Message-ID | <qLmXn-5SI-1@gated-at.bofh.it> |
On recent v4.4-rc releases, I can't run emacs. No, really, running
"emacs" in a GNOME 3 session makes gnome-shell think that emacs is
running, but no window is drawn, and the overall system UI is a bit
weird when the invisible emacs window is focused.
This is 100% reproducible.
There might be other symptoms involving gdb malfunctioning, but those
are, at best, sporadic. The emacs failure is entirely reliable. I
have no idea what the underlying failure mode is, but failure to wake
a socket waiter seems plausible, I also have no idea why oocalc,
gimp, vim, gedit, firefox, etc aren't affected.
A somewhat unorthodox "git bisect" run blames:
commit ceb5d58b217098a657f3850b7a2640f995032e62
Author: Eric Dumazet <edumazet@google.com>
Date: Sun Nov 29 20:03:11 2015 -0800
net: fix sock_wake_async() rcu protection
I've confirmed that v4.4-rc7 with that patch reverted works fine.
Since the offending commit was apparently a security fix, simply
reverting it might not be the best idea.
--Andy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[toc] | [next] | [standalone]
| From | Nicolai Stange <nicstange@gmail.com> |
|---|---|
| Date | 2015-12-30 12:40 +0100 |
| Message-ID | <qLngJ-60i-9@gated-at.bofh.it> |
| In reply to | #1299317 |
Andy Lutomirski <luto@kernel.org> writes: > On recent v4.4-rc releases, I can't run emacs. No, really, running > "emacs" in a GNOME 3 session makes gnome-shell think that emacs is > running, but no window is drawn, and the overall system UI is a bit > weird when the invisible emacs window is focused. > > This is 100% reproducible. > > There might be other symptoms involving gdb malfunctioning, but those > are, at best, sporadic. The emacs failure is entirely reliable. I > have no idea what the underlying failure mode is, but failure to wake > a socket waiter seems plausible, I also have no idea why oocalc, > gimp, vim, gedit, firefox, etc aren't affected. > > A somewhat unorthodox "git bisect" run blames: > > commit ceb5d58b217098a657f3850b7a2640f995032e62 > Author: Eric Dumazet <edumazet@google.com> > Date: Sun Nov 29 20:03:11 2015 -0800 > > net: fix sock_wake_async() rcu protection > > I've confirmed that v4.4-rc7 with that patch reverted works fine. > > Since the offending commit was apparently a security fix, simply > reverting it might not be the best idea. Please have a look at https://lkml.kernel.org/g/87ege73bma.fsf@gmail.com I ran into the same issue and this one fixes it for me. Best, Nicolai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[toc] | [prev] | [next] | [standalone]
| From | Eric Dumazet <eric.dumazet@gmail.com> |
|---|---|
| Date | 2015-12-30 15:00 +0100 |
| Subject | Re: Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" |
| Message-ID | <qLpsd-7lJ-1@gated-at.bofh.it> |
| In reply to | #1299332 |
On Wed, 2015-12-30 at 12:32 +0100, Nicolai Stange wrote: > Andy Lutomirski <luto@kernel.org> writes: > > > On recent v4.4-rc releases, I can't run emacs. No, really, running > > "emacs" in a GNOME 3 session makes gnome-shell think that emacs is > > running, but no window is drawn, and the overall system UI is a bit > > weird when the invisible emacs window is focused. > > > > This is 100% reproducible. > > > > There might be other symptoms involving gdb malfunctioning, but those > > are, at best, sporadic. The emacs failure is entirely reliable. I > > have no idea what the underlying failure mode is, but failure to wake > > a socket waiter seems plausible, I also have no idea why oocalc, > > gimp, vim, gedit, firefox, etc aren't affected. > > > > A somewhat unorthodox "git bisect" run blames: > > > > commit ceb5d58b217098a657f3850b7a2640f995032e62 > > Author: Eric Dumazet <edumazet@google.com> > > Date: Sun Nov 29 20:03:11 2015 -0800 > > > > net: fix sock_wake_async() rcu protection > > > > I've confirmed that v4.4-rc7 with that patch reverted works fine. > > > > Since the offending commit was apparently a security fix, simply > > reverting it might not be the best idea. > > Please have a look at https://lkml.kernel.org/g/87ege73bma.fsf@gmail.com > > I ran into the same issue and this one fixes it for me. Right, and the ozlabs pointers for this were : v1: https://patchwork.ozlabs.org/patch/561194/ v2: https://patchwork.ozlabs.org/patch/561553/ Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[toc] | [prev] | [next] | [standalone]
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Date | 2016-01-01 00:10 +0100 |
| Subject | Re: Linux 4.4-rc4 regression, bisected to "net: fix sock_wake_async() rcu protection" |
| Message-ID | <qLUw2-2hR-3@gated-at.bofh.it> |
| In reply to | #1299371 |
On Wed, Dec 30, 2015 at 5:55 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
> On Wed, 2015-12-30 at 12:32 +0100, Nicolai Stange wrote:
>>
>> Please have a look at https://lkml.kernel.org/g/87ege73bma.fsf@gmail.com
>>
>> I ran into the same issue and this one fixes it for me.
>
> Right, and the ozlabs pointers for this were :
> v2:
> https://patchwork.ozlabs.org/patch/561553/
Ok, that's merged into my tree through the networking merge today.
Andy, if you still see it with current -git, holler.
Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web