* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
@ 2011-08-04 17:24 ` bugzilla-daemon
2011-08-04 17:33 ` bugzilla-daemon
` (12 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-04 17:24 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #1 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-04 17:24:03 ---
moreover, hardware tests were done. Looks like cpu, hdd and ram aren't faulty.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
2011-08-04 17:24 ` [Bug 40542] " bugzilla-daemon
@ 2011-08-04 17:33 ` bugzilla-daemon
2011-08-07 13:39 ` Brad Campbell
2011-08-04 17:58 ` bugzilla-daemon
` (11 subsequent siblings)
13 siblings, 1 reply; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-04 17:33 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #2 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-04 17:33:52 ---
http port is DNATed by iptables to gentoo guest on tap virtio adapter.
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^ permalink raw reply [flat|nested] 18+ messages in thread* Re: [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:33 ` bugzilla-daemon
@ 2011-08-07 13:39 ` Brad Campbell
2011-08-07 15:08 ` Avi Kivity
0 siblings, 1 reply; 18+ messages in thread
From: Brad Campbell @ 2011-08-07 13:39 UTC (permalink / raw)
To: bugzilla-daemon; +Cc: kvm, slawek
On 05/08/11 01:33, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=40542
>
>
>
>
>
> --- Comment #2 from Slawek Rozbicki<slawek@rozbicki.eu> 2011-08-04 17:33:52 ---
> http port is DNATed by iptables to gentoo guest on tap virtio adapter.
>
This looks like the bug I've been fighting with on and off.
I'll wager if you can run your tests without using any form of NAT (and
preferably with netfilter compiled out) you won't see the problem occur.
http://permalink.gmane.org/gmane.linux.kernel.mm/64047
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [Bug 40542] overflow/panic on KVM hipervizor
2011-08-07 13:39 ` Brad Campbell
@ 2011-08-07 15:08 ` Avi Kivity
2011-08-08 1:40 ` Brad Campbell
0 siblings, 1 reply; 18+ messages in thread
From: Avi Kivity @ 2011-08-07 15:08 UTC (permalink / raw)
To: Brad Campbell; +Cc: bugzilla-daemon, kvm, slawek, netdev
On 08/07/2011 04:39 PM, Brad Campbell wrote:
>
> This looks like the bug I've been fighting with on and off.
What's the bugzilla number for that?
(unfortunately, no great insight except for "CLOSED DUPLICATE")
hopefully someone from netdev can take a look, DNAT is seriously broken.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [Bug 40542] overflow/panic on KVM hipervizor
2011-08-07 15:08 ` Avi Kivity
@ 2011-08-08 1:40 ` Brad Campbell
0 siblings, 0 replies; 18+ messages in thread
From: Brad Campbell @ 2011-08-08 1:40 UTC (permalink / raw)
To: Avi Kivity; +Cc: bugzilla-daemon, kvm, slawek, netdev
On 07/08/11 23:08, Avi Kivity wrote:
> On 08/07/2011 04:39 PM, Brad Campbell wrote:
>>
>> This looks like the bug I've been fighting with on and off.
>
> What's the bugzilla number for that?
>
> (unfortunately, no great insight except for "CLOSED DUPLICATE")
>
> hopefully someone from netdev can take a look, DNAT is seriously broken.
>
I can reproduce it at will, but it's on a live production machine. I've just ordered a second
machine which I can use to reproduce and test against. From a bisection standpoint I'm about half
way between 2.6.35 & 2.6.36, but until the second machine arrives I'm just unable to chase it any
further.
Brad
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
2011-08-04 17:24 ` [Bug 40542] " bugzilla-daemon
2011-08-04 17:33 ` bugzilla-daemon
@ 2011-08-04 17:58 ` bugzilla-daemon
2011-08-05 17:17 ` bugzilla-daemon
` (10 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-04 17:58 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #3 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-04 17:58:18 ---
Created an attachment (id=67532)
--> (https://bugzilla.kernel.org/attachment.cgi?id=67532)
/etc/conf.d/net (network configuration)
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (2 preceding siblings ...)
2011-08-04 17:58 ` bugzilla-daemon
@ 2011-08-05 17:17 ` bugzilla-daemon
2011-08-06 13:09 ` bugzilla-daemon
` (9 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-05 17:17 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
Marcelo Tosatti <mtosatti@redhat.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mtosatti@redhat.com
--- Comment #4 from Marcelo Tosatti <mtosatti@redhat.com> 2011-08-05 17:17:29 ---
(In reply to comment #3)
> Created an attachment (id=67532)
--> (https://bugzilla.kernel.org/attachment.cgi?id=67532) [details]
> /etc/conf.d/net (network configuration)
Can you please enable SLUB debugging, with the "slub_debug=ZFPU" kernel
parameter.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (3 preceding siblings ...)
2011-08-05 17:17 ` bugzilla-daemon
@ 2011-08-06 13:09 ` bugzilla-daemon
2011-08-06 16:21 ` bugzilla-daemon
` (8 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-06 13:09 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #5 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-06 13:09:43 ---
I've tested if this problem exists even if no TLB and KSM is compiled in
kernel. Moreover the kernel is now very small (i've removed lots of unused
kernel features). Unfortunately, the problem is still present. slub debug is on
its way:
CONFIG_SLUB_DEBUG=y
CONFIG_SLUB=y
CONFIG_SLUB_DEBUG_ON=y
# CONFIG_SLUB_STATS is not set
but there is no ZFPU option. I'll provide updated .config and kern.log when
it's crashed again.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (4 preceding siblings ...)
2011-08-06 13:09 ` bugzilla-daemon
@ 2011-08-06 16:21 ` bugzilla-daemon
2011-08-06 16:31 ` bugzilla-daemon
` (7 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-06 16:21 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #6 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-06 16:21:48 ---
Created an attachment (id=67842)
--> (https://bugzilla.kernel.org/attachment.cgi?id=67842)
kern.log with SLAB DEBUG = ON
Aug 6 18:10 - first occurance of SLAB debugged exception/crash. Please
investigate. I'll provide updated .config of kernel, because ive recompiled it
with less features.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (5 preceding siblings ...)
2011-08-06 16:21 ` bugzilla-daemon
@ 2011-08-06 16:31 ` bugzilla-daemon
2011-08-06 16:33 ` bugzilla-daemon
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13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-06 16:31 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #7 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-06 16:31:15 ---
its probably irrelevant but after last crash, now my ext4 root partition is
damaged and /forcefsck is not fixing it (in spite tune2fs shows me that the
check was made). Something tells me its a netfilter bug. I am going to turn the
virtio net adapter off, find out if this helps and if not switch to VDE just in
order to avoid iptables dnat.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (6 preceding siblings ...)
2011-08-06 16:31 ` bugzilla-daemon
@ 2011-08-06 16:33 ` bugzilla-daemon
2011-08-07 14:55 ` bugzilla-daemon
` (5 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-06 16:33 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #8 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-06 16:33:22 ---
Created an attachment (id=67852)
--> (https://bugzilla.kernel.org/attachment.cgi?id=67852)
/proc/config.gz
updated .config from /proc
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (7 preceding siblings ...)
2011-08-06 16:33 ` bugzilla-daemon
@ 2011-08-07 14:55 ` bugzilla-daemon
2011-08-07 15:10 ` bugzilla-daemon
` (4 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-07 14:55 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #9 from Anonymous Emailer <anonymous@kernel-bugs.osdl.org> 2011-08-07 14:55:13 ---
Reply-To: brad@fnarfbargle.com
On 05/08/11 01:33, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=40542
>
>
>
>
>
> --- Comment #2 from Slawek Rozbicki<slawek@rozbicki.eu> 2011-08-04 17:33:52 ---
> http port is DNATed by iptables to gentoo guest on tap virtio adapter.
>
This looks like the bug I've been fighting with on and off.
I'll wager if you can run your tests without using any form of NAT (and
preferably with netfilter compiled out) you won't see the problem occur.
http://permalink.gmane.org/gmane.linux.kernel.mm/64047
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (8 preceding siblings ...)
2011-08-07 14:55 ` bugzilla-daemon
@ 2011-08-07 15:10 ` bugzilla-daemon
2011-08-07 16:01 ` bugzilla-daemon
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13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-07 15:10 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #10 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-07 15:10:09 ---
My environment needs apache port mapping from kvm guest to public IP address. I
am able to run apache benchmark from KVM host just to investigate further this
bug, but eventualy i need to have DNAT and masquerade.
Is there anything I can do to help you guys address this issue? At the end of
the day, it is going to be production environment.
I suppose if everything fails, I'll buy another IP address and make bridged
network.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (9 preceding siblings ...)
2011-08-07 15:10 ` bugzilla-daemon
@ 2011-08-07 16:01 ` bugzilla-daemon
2011-08-08 1:41 ` bugzilla-daemon
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13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-07 16:01 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #11 from Avi Kivity <avi@redhat.com> 2011-08-07 16:01:51 ---
On 08/07/2011 04:39 PM, Brad Campbell wrote:
>
> This looks like the bug I've been fighting with on and off.
What's the bugzilla number for that?
(unfortunately, no great insight except for "CLOSED DUPLICATE")
hopefully someone from netdev can take a look, DNAT is seriously broken.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (10 preceding siblings ...)
2011-08-07 16:01 ` bugzilla-daemon
@ 2011-08-08 1:41 ` bugzilla-daemon
2011-08-19 10:37 ` bugzilla-daemon
2014-06-25 16:08 ` bugzilla-daemon
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-08 1:41 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #12 from Anonymous Emailer <anonymous@kernel-bugs.osdl.org> 2011-08-08 01:41:09 ---
Reply-To: brad@fnarfbargle.com
On 07/08/11 23:08, Avi Kivity wrote:
> On 08/07/2011 04:39 PM, Brad Campbell wrote:
>>
>> This looks like the bug I've been fighting with on and off.
>
> What's the bugzilla number for that?
>
> (unfortunately, no great insight except for "CLOSED DUPLICATE")
>
> hopefully someone from netdev can take a look, DNAT is seriously broken.
>
I can reproduce it at will, but it's on a live production machine. I've just
ordered a second
machine which I can use to reproduce and test against. From a bisection
standpoint I'm about half
way between 2.6.35 & 2.6.36, but until the second machine arrives I'm just
unable to chase it any
further.
Brad
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (11 preceding siblings ...)
2011-08-08 1:41 ` bugzilla-daemon
@ 2011-08-19 10:37 ` bugzilla-daemon
2014-06-25 16:08 ` bugzilla-daemon
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2011-08-19 10:37 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
--- Comment #13 from Slawek Rozbicki <slawek@rozbicki.eu> 2011-08-19 10:37:39 ---
i've changed my network layout to provide SNAT to the guests via iptables on 2
additional IPs. It seems that this bug doesn't exist anymore. Looks like static
nat is a walkaround. It's stable after an hour of testing. I've updated qemu as
well.
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^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug 40542] overflow/panic on KVM hipervizor
2011-08-04 17:22 [Bug 40542] New: overflow/panic on KVM hipervizor bugzilla-daemon
` (12 preceding siblings ...)
2011-08-19 10:37 ` bugzilla-daemon
@ 2014-06-25 16:08 ` bugzilla-daemon
13 siblings, 0 replies; 18+ messages in thread
From: bugzilla-daemon @ 2014-06-25 16:08 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=40542
xerofoify@gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xerofoify@gmail.com
--- Comment #14 from xerofoify@gmail.com ---
This bug is outdated, please test against a newer kernel.
Cheers Nick
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