[Bug #14943] nfs regression?

[Bug #14943] nfs regression?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.31 and 2.6.32.

The following bug entry is on the current list of known regressions
introduced between 2.6.31 and 2.6.32.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
Subject		: nfs regression?
Submitter	: Nikola Ciprich <extmaillist@linuxbox.cz>
Date		: 2009-12-28 12:10 (2 days old)
References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4

Re: [Bug #14943] nfs regression?

[Nikola Ciprich]

Hello Rafael,
I can confirm the bug is still present. I've also created kernel
bugzilla account so I can track the status and provide further 
testing/feedback.
Thanks for Your interest.
best regards
nik

On Tue, Dec 29, 2009 at 04:28:57PM +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.31 and 2.6.32.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.31 and 2.6.32.  Please verify if it still should
> be listed and let me know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
> Subject		: nfs regression?
> Submitter	: Nikola Ciprich <extmaillist-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org>
> Date		: 2009-12-28 12:10 (2 days old)
> References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4
> 
> 

-- 
-------------------------------------
Nikola CIPRICH
LinuxBox.cz, s.r.o.
28. rijna 168, 709 01 Ostrava

tel.:   +420 596 603 142
fax:    +420 596 621 273
mobil:  +420 777 093 799

www.linuxbox.cz

mobil servis: +420 737 238 656
email servis: servis-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org
-------------------------------------

Re: [Bug #14943] nfs regression?

[Rafael J. Wysocki]

On Tuesday 29 December 2009, Nikola Ciprich wrote:
> Hello Rafael,
> I can confirm the bug is still present. I've also created kernel
> bugzilla account so I can track the status and provide further 
> testing/feedback.

Great, thanks for the update.

Rafael

[Bug #14943] nfs regression?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.31 and 2.6.32.

The following bug entry is on the current list of known regressions
introduced between 2.6.31 and 2.6.32.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
Subject		: nfs regression?
Submitter	: Nikola Ciprich <extmaillist@linuxbox.cz>
Date		: 2009-12-28 12:10 (14 days old)
References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4

[Bug #14943] nfs regression?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.31 and 2.6.32.

The following bug entry is on the current list of known regressions
introduced between 2.6.31 and 2.6.32.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
Subject		: nfs regression?
Submitter	: Nikola Ciprich <extmaillist-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org>
Date		: 2009-12-28 12:10 (28 days old)
References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4

[Bug #14943] nfs regression?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.31 and 2.6.32.

The following bug entry is on the current list of known regressions
introduced between 2.6.31 and 2.6.32.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
Subject		: nfs regression?
Submitter	: Nikola Ciprich <extmaillist-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org>
Date		: 2009-12-28 12:10 (35 days old)
References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4

Re: [Bug #14943] nfs regression?

[Nikola Ciprich]

Hi Rafael,
Sorry, I haven't had time to test newer kernels lately :(, but according to 
changelogs, no related problems were fixed till 2.6.32.7...
I'll update problematic machine on wednesday though...
regards
nik
On Mon, Feb 01, 2010 at 01:43:18AM +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.31 and 2.6.32.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.31 and 2.6.32.  Please verify if it still should
> be listed and let me know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
> Subject		: nfs regression?
> Submitter	: Nikola Ciprich <extmaillist-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org>
> Date		: 2009-12-28 12:10 (35 days old)
> References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4
> 
> 
> 

-- 
-------------------------------------
Nikola CIPRICH
LinuxBox.cz, s.r.o.
28. rijna 168, 709 01 Ostrava

tel.:   +420 596 603 142
fax:    +420 596 621 273
mobil:  +420 777 093 799

www.linuxbox.cz

mobil servis: +420 737 238 656
email servis: servis-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org
-------------------------------------

[Bug #14943] nfs regression?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.31 and 2.6.32.

The following bug entry is on the current list of known regressions
introduced between 2.6.31 and 2.6.32.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14943
Subject		: nfs regression?
Submitter	: Nikola Ciprich <extmaillist@linuxbox.cz>
Date		: 2009-12-28 12:10 (49 days old)
References	: http://marc.info/?l=linux-kernel&m=126200276223524&w=4

Re: [Bug #14943] nfs regression?

[Américo Wang]

On Mon, Feb 22, 2010 at 5:42 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.31 and 2.6.32.
>
> The following bug entry is on the current list of known regressions
> introduced between 2.6.31 and 2.6.32.  Please verify if it still should
> be listed and let the tracking team know (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14943
> Subject         : nfs regression?
> Submitter       : Nikola Ciprich <extmaillist@linuxbox.cz>
> Date            : 2009-12-28 12:10 (56 days old)
> References      : http://marc.info/?l=linux-kernel&m=126200276223524&w=4
>

This seems that we missed checking XPT_DEAD too.

Nikola, does adding !test_bit(XPT_DEAD, &xprt->xpt_flags) in the same
place as commit b292cf9ce70d221c3f04f help?

Something like:

diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 7d1f9e9..7b66c7f 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -700,7 +700,8 @@ int svc_recv(struct svc_rqst *rqstp, long timeout)

        len = 0;
        if (test_bit(XPT_LISTENER, &xprt->xpt_flags) &&
-           !test_bit(XPT_CLOSE, &xprt->xpt_flags)) {
+           !test_bit(XPT_CLOSE, &xprt->xpt_flags) &&
+           !test_bit(XPT_DEAD, &xprt->xpt_flags)) {
                struct svc_xprt *newxpt;
                newxpt = xprt->xpt_ops->xpo_accept(xprt);
                if (newxpt) {

Re: [Bug #15309] reiserfs issue with 2.6.32.8

[Bret Towe]

On Sun, Feb 21, 2010 at 1:42 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.31 and 2.6.32.
>
> The following bug entry is on the current list of known regressions
> introduced between 2.6.31 and 2.6.32.  Please verify if it still should
> be listed and let the tracking team know (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15309
> Subject         : reiserfs issue with 2.6.32.8
> Submitter       : Bret Towe <magnade@gmail.com>
> Date            : 2010-02-14 18:23 (8 days old)
> Message-ID      : <dda83e781002141023t2abe95b8w83f59d6f411f68a2@mail.gmail.com>
> References      : http://marc.info/?l=linux-kernel&m=126617185512707&w=4
>
>

I'm still doing some bisecting trying to narrow down the problem

Re: [Bug #14656] Oops at __rmqueue+0x98 with 2.6.32-rc6

[Christian Kujau]

Lucas,

On Sun, 21 Feb 2010 at 22:42, Rafael J. Wysocki wrote:
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14656
> Subject		: Oops at __rmqueue+0x98 with 2.6.32-rc6
> References : http://marc.info/?l=linux-kernel&m=125860255229092&w=4

Your initial report said:

kernel: BUG: unable to handle kernel paging request at 0000b2cb
kernel: IP: [<c0198266>] __rmqueue+0x98/0x36c


However, the backtraces you posted later (with DEBUG_LIST=y) always 
contained:


------------[ cut here ]------------
WARNING: at lib/list_debug.c:51 list_del+0x41/0x60()
Hardware name: MacBook3,1
list_del corruption. next->prev should be c1b71018, but was 00005095


Not being a kernel hacker, this "list_del corruption" looks kinda weird. At 
one point[0] it was suggested to reproduce this with an untainted 
(ndiswrapper?) kernel; on other occurences[1] some code surgery was indeed 
needed.

I'm afraid I can't help here though, just thinking out loud...

Christian.

[0] http://lkml.org/lkml/2007/1/12/214
[1] http://lkml.org/lkml/2008/9/26/85
    http://lkml.indiana.edu/hypermail/linux/kernel/0902.1/01992.html
-- 
BOFH excuse #275:

Bit rot

Re: [Bug #14943] nfs regression?

[Nikola Ciprich]

YES!
seems like 2.6.32.8 with your patch included finally doesn't
spit any backtraces and peername failed errors!
will You push this upstream + to stable?
thanks a lot for Your help!
have a nice day
with best regards
nik

> This seems that we missed checking XPT_DEAD too.
> 
> Nikola, does adding !test_bit(XPT_DEAD, &xprt->xpt_flags) in the same
> place as commit b292cf9ce70d221c3f04f help?
> 
> Something like:
> 
> diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
> index 7d1f9e9..7b66c7f 100644
> --- a/net/sunrpc/svc_xprt.c
> +++ b/net/sunrpc/svc_xprt.c
> @@ -700,7 +700,8 @@ int svc_recv(struct svc_rqst *rqstp, long timeout)
> 
>         len = 0;
>         if (test_bit(XPT_LISTENER, &xprt->xpt_flags) &&
> -           !test_bit(XPT_CLOSE, &xprt->xpt_flags)) {
> +           !test_bit(XPT_CLOSE, &xprt->xpt_flags) &&
> +           !test_bit(XPT_DEAD, &xprt->xpt_flags)) {
>                 struct svc_xprt *newxpt;
>                 newxpt = xprt->xpt_ops->xpo_accept(xprt);
>                 if (newxpt) {
> 

-- 
-------------------------------------
Nikola CIPRICH
LinuxBox.cz, s.r.o.
28. rijna 168, 709 01 Ostrava

tel.:   +420 596 603 142
fax:    +420 596 621 273
mobil:  +420 777 093 799

www.linuxbox.cz

mobil servis: +420 737 238 656
email servis: servis-Jp3n8lUXroTtwjQa/ONI9g@public.gmane.org
-------------------------------------