atom feed60 messages in org.freebsd.freebsd-currentRe: zfs: Fatal trap 12: page fault wh...
FromSent OnAttachments
Juergen UngerJul 27, 2009 12:24 am 
O. HartmannJul 27, 2009 12:58 pm 
Juergen UngerJul 27, 2009 2:33 pm 
Andriy GaponJul 28, 2009 2:50 am 
Pawel Jakub DawidekJul 29, 2009 1:47 am 
Thomas BackmanJul 29, 2009 3:31 am 
Andriy GaponJul 29, 2009 4:21 am 
Andriy GaponJul 29, 2009 4:41 am 
Thomas BackmanJul 29, 2009 5:45 am 
Andriy GaponJul 29, 2009 6:03 am 
Thomas BackmanJul 29, 2009 6:23 am 
Andriy GaponJul 29, 2009 6:45 am 
Thomas BackmanJul 29, 2009 6:52 am 
Andriy GaponJul 29, 2009 6:55 am 
Thomas BackmanJul 29, 2009 7:10 am 
Andriy GaponJul 29, 2009 7:35 am 
Andriy GaponJul 29, 2009 9:01 am 
Thomas BackmanJul 29, 2009 9:10 am 
Thomas BackmanJul 29, 2009 10:13 am 
Andriy GaponJul 29, 2009 10:17 am 
Thomas BackmanJul 29, 2009 11:03 am 
Thomas BackmanJul 29, 2009 1:14 pm 
Pawel Jakub DawidekJul 29, 2009 2:17 pm 
Thomas BackmanJul 30, 2009 12:04 am 
Andriy GaponJul 30, 2009 5:11 am 
Thomas BackmanJul 30, 2009 5:51 am 
Andriy GaponJul 30, 2009 6:13 am 
Thomas BackmanJul 30, 2009 6:31 am 
Andriy GaponJul 30, 2009 6:34 am 
Andriy GaponJul 30, 2009 7:24 am 
Thomas BackmanJul 30, 2009 7:39 am 
Andriy GaponJul 30, 2009 7:45 am 
Andriy GaponJul 30, 2009 7:48 am 
Thomas BackmanJul 30, 2009 8:25 am 
Andriy GaponJul 30, 2009 8:39 am 
Thomas BackmanJul 30, 2009 9:41 am 
Thomas BackmanJul 30, 2009 11:29 am 
Andriy GaponJul 30, 2009 11:41 am 
Thomas BackmanJul 31, 2009 2:04 am 
James R. Van ArtsdalenJul 31, 2009 4:44 am 
Thomas BackmanJul 31, 2009 5:26 am 
Thomas BackmanJul 31, 2009 10:09 am 
Tim KientzleAug 1, 2009 10:11 am 
Juergen UngerAug 2, 2009 2:26 am 
Pawel Jakub DawidekAug 2, 2009 2:29 am 
Juergen UngerAug 3, 2009 1:32 pm 
Pawel Jakub DawidekAug 4, 2009 12:33 am 
Juergen UngerAug 4, 2009 12:53 am 
Pawel Jakub DawidekAug 4, 2009 2:49 am 
Juergen UngerAug 4, 2009 2:56 am 
Pawel Jakub DawidekAug 4, 2009 12:50 pm 
Thomas BackmanAug 4, 2009 1:10 pm 
Pawel Jakub DawidekAug 4, 2009 1:25 pm 
Pawel Jakub DawidekAug 4, 2009 11:49 pm 
Thomas BackmanAug 5, 2009 12:08 am 
Thomas BackmanAug 5, 2009 12:20 am 
Pawel Jakub DawidekAug 5, 2009 2:37 am 
Thomas BackmanAug 5, 2009 3:36 am 
Thomas BackmanAug 5, 2009 5:06 am 
Pawel Jakub DawidekAug 6, 2009 10:44 pm 
Subject:Re: zfs: Fatal trap 12: page fault while in kernel mode
From:Thomas Backman (sere@exscape.org)
Date:Aug 5, 2009 12:08:38 am
List:org.freebsd.freebsd-current

On Aug 5, 2009, at 08:50, Pawel Jakub Dawidek wrote:

On Fri, Jul 31, 2009 at 11:05:01AM +0200, Thomas Backman wrote:

I'm able to reliably reproduce this panic, by having zfs recv destroy a filesystem on the receiving end.

1) Use DDEBUG=1, I guess 2) Create a FS on the source pool you don't care about: zfs create -o mountpoint=/testfs source/testfs 3) Clone a pool to another: zfs snapshot -r source@snap && zfs send -R source@snap | zfs recv -Fvd target 4) zfs destroy -r source/testfs 4) zfs snapshot -r source@snap2 && zfs send -R -I snap source@snap2 | zfs recv -Fvd target 5) ^ Panic while receiving the FS the destroyed one is mounted under. In my case, this was tank/root three times out of three; I then tried creating testfs under /tmp (tank/tmp/testfs), *mounting* it under / usr/ testfs, and it panics on receiving tank/usr:

[...]

I repeated precisevly those steps and it doesn't panic for me. Could you confirm that you use this patch?

http://people.freebsd.org/~pjd/patches/zfs_vnops.c.2.patch

If so, could you give me exact steps and all of them how to reproduce it? Starting with pool creation.

Yup, I'm using that patch (I diffed the diffs, heh). I'll try to write a script to recreate the panic; I hope it's as easy as in real-world conditions though.

Regards, Thomas

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