[Xen-users] Custom kernel always crashes

[PAINCHAUD Christophe <cpainchaud@xxxxxxxxxxx>]

Hello there,

        I am running a few Xen hosts. Until now I've always been using your binary packages and I was happy with them. But I needed to compile MPPE support for a customer domU. So I downloaded kernel sources et xen sources. I "Xenefied" my kernel sources, played a bit with its configuration and ran

  1 - make ARCH=xen menuconfig
  2 - make ARCH=xen
  3 - make ARCH=xen install

        My problem happens when I try to use this new kernel for the domU : xm create /etc/xen/testdom -c  opens a console but nothing happens, it remains empty. And if I check logs it says that my domain crashed (copy of xend.log and xen-debug.log below). In my domain config file, if I put back the stock kernel from your binary package, it works perfectly again. Doest it come from the fact that I used a custom kernel with your binaries (incompatible compiling options or anything like that) ?

Xend.log output:

[2005-11-03 16:30:51 xend] DEBUG (XendDomainInfo:720) init_domain> Created domain=18 name=TestDom memory=64
[2005-11-03 16:30:51 xend] INFO (console:94) Created console id=14 domain=18 port=9618
[2005-11-03 16:30:51 xend] DEBUG (XendDomainInfo:1130) Creating vbd dom=18 uname=file:/xen_filesystems/testdom.ext2
[2005-11-03 16:30:51 xend] DEBUG (blkif:155) Connecting blkif <BlkifBackendInterface 18 0>
[2005-11-03 16:30:51 xend] DEBUG (XendDomainInfo:1130) Creating vbd dom=18 uname=phy:hda4
[2005-11-03 16:30:51 xend] DEBUG (blkif:155) Connecting blkif <BlkifBackendInterface 18 0>
[2005-11-03 16:30:51 xend] DEBUG (XendDomainInfo:1107) Creating vif dom=18 vif=0 mac=aa:00:00:00:00:11
[2005-11-03 16:30:51 xend] INFO (XendRoot:113) EVENT> xend.console.create [14, 18, 9618]
[2005-11-03 16:30:51 xend] INFO (XendRoot:113) EVENT> xend.domain.create ['TestDom', '18']
[2005-11-03 16:30:51 xend] INFO (XendRoot:113) EVENT> xend.domain.unpause ['TestDom', '18']
[2005-11-03 16:30:52 xend] DEBUG (XendDomain:244) XendDomain>reap> domain died name=TestDom id=18
[2005-11-03 16:30:52 xend] INFO (XendDomain:568) Destroying domain: name=TestDom
[2005-11-03 16:30:52 xend] DEBUG (XendDomainInfo:665) Destroying vifs for domain 18
[2005-11-03 16:30:52 xend] DEBUG (netif:305) Destroying vif domain=18 vif=0
[2005-11-03 16:30:52 xend] DEBUG (XendDomainInfo:674) Destroying vbds for domain 18
[2005-11-03 16:30:52 xend] DEBUG (blkif:552) Destroying blkif domain=18
[2005-11-03 16:30:52 xend] DEBUG (blkif:408) Destroying vbd domain=18 idx=0
[2005-11-03 16:30:52 xend] DEBUG (blkif:408) Destroying vbd domain=18 idx=1
[2005-11-03 16:30:52 xend] DEBUG (XendDomainInfo:634) Closing console, domain 18
[2005-11-03 16:30:52 xend] DEBUG (XendDomainInfo:622) Closing channel to domain 18
[2005-11-03 16:30:52 xend] INFO (XendRoot:113) EVENT> xend.virq 4
[2005-11-03 16:30:52 xend] DEBUG (blkif:363) Unbinding vbd (type file) from /dev/loop1
[2005-11-03 16:30:52 xend] DEBUG (blkif:363) Unbinding vbd (type phy) from hda4
[2005-11-03 16:30:52 xend] INFO (XendRoot:113) EVENT> xend.domain.exit ['TestDom', '18', 'crash']
[2005-11-03 16:30:52 xend] INFO (XendRoot:113) EVENT> xend.domain.destroy ['TestDom', '18']
[2005-11-03 16:30:53 xend] INFO (XendRoot:113) EVENT> xend.domain.died ['TestDom', '18']

Xend-debug.log

vif-bridge down vif=vif-testdom domain=TestDom mac=aa:00:00:00:00:11 bridge=xen-br0
VIRTUAL MEMORY ARRANGEMENT:
 Loaded kernel: c0100000->c05b2fe4
 Init. ramdisk: c05b3000->c05b3000
 Phys-Mach map: c05b3000->c05c3000
 Page tables:   c05c3000->c05c6000
 Start info:    c05c6000->c05c7000
 Boot stack:    c05c7000->c05c8000
 TOTAL:         c0000000->c0800000
 ENTRY ADDRESS: c0100000
ioctl: LOOP_SET_FD: Device or resource busy
25: vif21.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
25: vif-testdom: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
vif-bridge up vif=vif-testdom domain=TestDom mac=aa:00:00:00:00:11 bridge=xen-br0
VirqClient.virqReceived> 4
vif-bridge down vif=vif-testdom domain=TestDom mac=aa:00:00:00:00:11 bridge=xen-br0

PAINCHAUD Christophe

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