pxelinux.0 3.63 hangs with boot ROMs from kvm-pxe

Bug #565616 reported by Robert Sander on 2010-04-17
This bug affects 3 people
Affects Status Importance Assigned to Milestone
syslinux (Ubuntu)

Bug Description

Binary package hint: etherboot

When trying to setup KVM virtual machines via PXE boot I came across this issue:

Booting via PXE works until the kernel should be loaded. I see in the tftpd logfile that pxelinux.0 is loaded, that the config file from pxelinux.cfg is loaded and additional files from that:

Apr 17 23:26:18 raman atftpd[11884]: Serving pxelinux.0 to
Apr 17 23:26:18 raman atftpd[11884]: Serving pxelinux.cfg/01-00-50-56-00-00-1b to
Apr 17 23:26:18 raman atftpd[11884]: Serving knoppix62/german.kbd to
Apr 17 23:26:18 raman atftpd[11884]: Serving knoppix62/boot.msg to
Apr 17 23:26:18 raman atftpd[11884]: Serving knoppix62/logo.16 to

But after that the virtual machine only shows the boot: prompt (and the kvm process on the host uses 100% CPU).

This happens with pxelinux.0 from lucid's syslinux package:

# strings /usr/lib/syslinux/pxelinux.0 |grep PXELINUX
PXELINUX 3.63 Debian-2008-07-15

If I replace pxelinux.0 with a newer file:

# strings ./pxelinux.0 |grep PXELINUX
PXELINUX 3.83 Debian-2009-10-06

everything boots as expected.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: kvm-pxe 5.4.4-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.31-generic
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Sat Apr 17 23:29:40 2010

PackageArchitecture: all
SourcePackage: etherboot

Sergey Svishchev (svs) on 2011-01-13
affects: etherboot (Ubuntu) → syslinux (Ubuntu)
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