Bug 297173 – app-emulation/dosemu: Kernel 2.6.3 / 2.6.31 gives segfault and LOWRAM when starting dosemu.

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Gert Andersen 2009-12-16 14:52:54 UTC]

Dosemu Kernel 2.6.30 2.6.31 and 2.6.32, gives LOWRAM i mmap.
I will just heard if the segfault by dosemu is been fixed by using the latet kernels and gentoo-sources and portages.
I have a kernel 2.6.31-r5 on my x86 i686 system and by startup dosemu as root is it seen to work but when I login and a normal user is dosemu given segfault and LOWRAM in mmap om my pc there have 2G ram chip + extra rams in its graphic card.


Reproducible: Always

Steps to Reproduce:
1. login kofo - dosemu
2.
3.

Actual Results:  
Segfaults - LOWRAM in mmap


Expected Results:  
The software should have start up with now ram error and show up some information by settings and dosemu information with ending of C:>


Can not do it rigt now as e good gentoo friend is workg on the pc to make the kernel of 2.6.31 work better.

[Comment 1 Hanno Böck 2010-01-17 23:04:03 UTC]

Which version of dosemu are you using? Please post output of emerge --info.

[Comment 2 Gert Andersen 2010-01-20 21:01:10 UTC]

(In reply to comment #1)
> Which version of dosemu are you using? Please post output of emerge --info.

I am using dosemu 1.4.0.1 + the pre version emrge download and merge. Right now is I using kernel 2.6.25-7 why I not have got kernel 2.6.32 to like start up good and i getting LOWRAM starting dosemu in newest kernel 2.6.32-r5 i users use of it.
---- emerge.info ----
Portage 2.1.6.13 (default/linux/x86/10.0, gcc-4.1.2, glibc-2.9_p20081201-r2, 2.6.24-gentoo-r7 i686)
=================================================================
System uname: Linux-2.6.24-gentoo-r7-i686-Intel-R-_Core-TM-2_CPU_6300_@_1.86GHz-with-gentoo-1.12.13
Timestamp of tree: Wed, 16 Dec 2009 15:00:01 +0000
app-shells/bash:     4.0_p35
dev-lang/python:     2.6.4
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.63-r1
sys-devel/automake:  1.10.2
sys-devel/binutils:  2.18-r3
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
virtual/os-headers:  2.6.27-r2
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=i686 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="buildpkg distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphanes unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="acl berkdb bzip2 cracklib crypt cxx gdbm gpm iconv modules mudflap ncurses nls nptl nptlonly openmp pam pcre perl python readline reflection session spl ssl symlink sysfs tcpd unicode x86 zlib" ELIBC="glibc" INPUT_DEVICES="keyboard" KERNEL="linux" RUBY_TARGETS="ruby18" USERLAND="GNU"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
 
--------------

[Comment 3 Hanno Böck 2010-01-20 21:32:49 UTC]

The lowram issue is fixed in dosemu-1.4.1_pre20091009, please update to that.