Ubuntu
dosemu package

xdosemu crashes on startup

Bug #277335 reported by sds on 2008-10-02

This bug report is a duplicate of: Bug #216398: default mmap_min_addr breaks dosemu. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	dosemu (Ubuntu)	New	Undecided	Unassigned

Bug Description

Binary package hint: dosemu

dosemu 1.4.0+svn.1828-1
ubuntu 8.06
system76 core2duo laptop

$ xdosemu
LOWRAM mmap: Invalid argument
Segmentation fault
$ dmesg | tail
[ 104.423562] dosemu.bin[14285]: segfault at f0000 rip 7f6ca0065e4b rsp 7fffa8bd4e28 error 6
[ 107.324631] dosemu.bin[14321]: segfault at f0000 rip 7f46c06bce4b rsp 7fffc922d558 error 6
[ 213.137799] dosemu.bin[14479]: segfault at f0000 rip 7ff20f931e4b rsp 7fff184a07c8 error 6

Revision history for this message

sixforty (rdeering-deactivatedaccount) wrote on 2008-10-05:

Isn't this the same as dosemu bug #219638? If so, there's a workaround posted with that bug.

Revision history for this message

sixforty (rdeering-deactivatedaccount) wrote on 2008-10-05:

Sorry, the apparent duplicate is bug #216398, not the one listed above.

Revision history for this message

E.Auer (e-auer) wrote on 2008-10-15:

I agree with sixforty - some kind of null pointer protection which is
enabled by default (since Hardy?) spoils dosemu (and maybe wine?)
vm86 mmap handling, but all of the workarounds given for the
bug #216398 indeed fix it :-). Either dosemu should automatically
give the user instructions, for example show the URL of a page
about the workarounds... or Ubuntu could disable that mmap
null pointer protection while dosemu is running or even as soon
as you install dosemu...? I hope we use up to date FreeDOS? :-)

PS: Random unrelated Hardy experiences: Updates exec stuff in /tmp
should use /var/lib/... to allow noexec /tmp. Nvidia 3d drivers can break
suspend or hibernate. Sometimes resume reboots; has i8042 warning.
SSHD default allows all users, incl root, bad. Pulseaudio hogs devices.