From mboxrd@z Thu Jan 1 00:00:00 1970 From: Valtteri Kiviniemi Subject: Re: Xen 3.4.2 kernel / lvcreate crash Date: Thu, 01 Apr 2010 10:33:57 +0300 Message-ID: <4BB44C65.2090203@dataproof.fi> References: <4BB3EA07.5060807@dataproof.fi> <4BB3F5FC.2040402@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4BB3F5FC.2040402@goop.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com, Jeremy Fitzhardinge List-Id: xen-devel@lists.xenproject.org Hi, I am not using Debian Xen kernel, I have always downloaded the latest release from xen.org and compiled it myself. - Valtteri Jeremy Fitzhardinge kirjoitti: > On 03/31/2010 05:34 PM, Valtteri Kiviniemi wrote: >> I am using Xen 3.4.2 with kernel 2.6.18.8 and Debian Lenny. I am having >> some problems with LVM-snapshots. I have crontab which makes once a >> night a snapshot from domU's LV. >> >> The problem is that maybe once in a month the lvcreate command stucks >> and after that I have to reboot the machine to solve the problem. >> >> So is this a problem on the Xen kernel or with Debian? > > Someone reported a very similar crash with a Debian Xen kernel. I would > suspect a bug in the Debian Xen kernel. > > J > >> >> dmesg shows the following: >> >> Unable to handle kernel NULL pointer dereference at 0000000000000030 RIP: >> [] __map_bio+0x45/0x9b >> PGD 38057067 PUD 10657067 PMD 0 >> Oops: 0000 [1] SMP >> CPU 0 >> Pid: 17350, comm: lvcreate Not tainted 2.6.18.8-dom0 #1 >> RIP: e030:[] [] __map_bio+0x45/0x9b >> RSP: e02b:ffff880028693d68 EFLAGS: 00010202 >> RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 >> RDX: ffff8800311bfaf0 RSI: ffff8800219c38c0 RDI: ffffc200000f30d8 >> RBP: ffff8800311bfae0 R08: 0000000000000001 R09: 001322b628693ce8 >> R10: 0000000000000001 R11: 00000000006cc4a0 R12: ffff8800219c38c0 >> R13: fffffffff3800008 R14: ffff88003c56c5d8 R15: ffff8800311bfae0 >> FS: 00002b35f3f7ac20(0000) GS:ffffffff805ca000(0000) >> knlGS:0000000000000000 >> CS: e033 DS: 0000 ES: 0000 >> Process lvcreate (pid: 17350, threadinfo ffff880028692000, task >> ffff88003cc510c0) >> Stack: ffff88003f5a0440 0000000000000001 ffff88003c56c5c0 >> ffff88003c565400 >> fffffffff3800008 ffffffff804221b5 ffff88003c56c5d8 ffff88003f5a0440 >> ffff88003c56c5c0 ffff88003c565400 ffff8800252b1f10 ffffffff8025e099 >> Call Trace: >> [] __split_bio+0x1a9/0x3f7 >> [] __down_write_nested+0x12/0xf1 >> [] __up_write+0x1d/0x115 >> [] dm_resume+0xa1/0x137 >> [] dev_suspend+0x0/0x171 >> [] dev_suspend+0x14b/0x171 >> [] ctl_ioctl+0x1c6/0x20e >> [] do_ioctl+0x56/0x6c >> [] vfs_ioctl+0x23a/0x250 >> [] sys_ioctl+0x3d/0x5c >> [] system_call+0x68/0x6d >> [] system_call+0x0/0x6d >> >> >> Code: ff 50 30 41 89 c5 83 f8 00 7e 10 4c 89 e7 41 59 5b 5d 41 5c >> RIP [] __map_bio+0x45/0x9b >> RSP >> CR2: 0000000000000030 >> >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@lists.xensource.com >> http://lists.xensource.com/xen-devel >> > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel