Bug 140934 - Problem with udev on current stable snapshot
Summary: Problem with udev on current stable snapshot
Status: RESOLVED FIXED
: 140939 141139 141381 (view as bug list)
Alias: None
Product: SUSE Linux 10.1
Classification: openSUSE
Component: Basesystem (show other bugs)
Version: Alpha 4
Hardware: Other Other
: P5 - None : Blocker (vote)
Target Milestone: ---
Assignee: Kay Sievers
QA Contact: E-mail List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-12-23 14:52 UTC by Joachim Gleissner
Modified: 2006-01-26 15:34 UTC (History)
2 users (show)

See Also:
Found By: Other
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

Attachments
Xorg start log (20.23 KB, text/plain)
2005-12-23 15:41 UTC, Joachim Gleissner 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Joachim Gleissner 2005-12-23 14:52:44 UTC 
It seems /dev needs to be mounted with exec flag on current stable snapshot. Otherwise X refuses to start with error "could not map SYS BIOS", vbetool also aborts with a similar error. Maybe other components are affected, too. Is this intended?
Comment 1 Stefan Dirsch 2005-12-23 15:32:52 UTC 
Could you attach a complete X logfile? Thanks.
Comment 2 Joachim Gleissner 2005-12-23 15:41:20 UTC 
Created attachment 61751 [details]
Xorg start log
Comment 3 Kay Sievers 2005-12-23 16:06:11 UTC 
I can reproduce it on one of my boxes, no idea, why the other one is working.
It fails with:
  open("/dev/mem", ORDWR|O_LARGEFILE) = 9
  mmap2(0xf0000, 65536, PROT_READ|PROT_EXEC, MAP_SHARED|MAP_FIXED, 9, 0xf0) = -1 EPERM (Operation not permitted)

Does X depend on PROT_EXEC?
Comment 4 Stefan Dirsch 2005-12-23 16:13:26 UTC 
xc/programs/Xserver/hw/xfree86/os-support/linux/int10/linux.c:
[...]
                if ((sysMem = mmap((void *)(SYS_BIOS), BIOS_SIZE,
                                   PROT_READ | PROT_EXEC,
                                   MAP_SHARED | MAP_FIXED, fd, SYS_BIOS))
                    == MAP_FAILED) {
                    xf86DrvMsg(screen, X_ERROR, "Cannot map SYS BIOS\n");
[...]
I think this is intended ...
Comment 5 Stefan Dirsch 2005-12-23 16:16:02 UTC 
Egbert?
Comment 6 Stefan Dirsch 2005-12-23 16:23:56 UTC 
*** Bug 140939 has been marked as a duplicate of this bug. ***
Comment 7 Kay Sievers 2005-12-23 19:47:14 UTC 
Ok, this is likely to cause too much trouble, even if we get X working. I've removed "noexec" from mkinitrd and submittd it to autobuild now.
Comment 8 Kay Sievers 2005-12-26 04:44:38 UTC 
Fixed.
Comment 9 Stefan Dirsch 2006-01-01 21:44:46 UTC 
*** Bug 141139 has been marked as a duplicate of this bug. ***
Comment 10 Stefan Dirsch 2006-01-09 23:16:35 UTC 
*** Bug 141381 has been marked as a duplicate of this bug. ***
Comment 11 Egbert Eich 2006-01-26 15:34:15 UTC 
I don't recall exactly any more if the exec flag is really required. It's too long ago. The vm86 code does execute BIOS code in place - other than the emulator. Removing PROT_EXEC and testing on a primary card with VBE DDC detection should reveal if it works without. I doubt it though.