Weird oopses with 2.6.22-rc7

Weird oopses with 2.6.22-rc7

[Christian Kujau]

Hi there,

Since a few days I'm experiencing weird oopses on my iBook/G4 with 
ubuntu's 2.6.22-7-powerpc and also with a vanilla 2.6.22-rc7-git8.

Now for the "weird" part: The oops happens when doing "make install" for 
a piece of software (xine-ui media player) as *root*. No kidding, it 
does NOT happen when I compile the software and do "make install" as a 
normal user. This is 100% reproducible, here're some technical infos 
before I go on describing whe I did:

 	http://nerdbynature.de/bits/2.6.22-rc7-git8/

I've compiled this software earlier, numerous times, always doing 
"make" as a user and "sudo make install" afterwards to install to 
/opt/xine. So when I now tried "make install" as a user I had to chown 
/opt/xine to the user of course.

Even funnier: the dmesg output was captured when I was in 
runlevel 1 - here "make install" (as root) did produce an oops too, but 
the system did NOT panic. I typed "make install" a few times - always an 
oops, but no panic (in runlevel 1).

The netconsole.log captured the panics as well, but the output is kinda 
messy (as always), I'll try to reformat the logfile a bit...

When the Oopses started I checked memory (no memtest86 for ppc, but 
userspace memtest found nothing) and the harddisk (dd'ing from the whole 
disk) and fsck'ed the ext3 - not a single error. Also, all other 
applications are running fine (X11, music, video and stuff),
the system is stable as usual.

I even moved the old target-directory (make install...) out of the way 
and created a new one (new inode, new luck or so) - but to no avail. 
"fsck.ext3 -D" to reindex the directories, still the Oopses just won't 
go away. Searching the net for "Unrecoverable FP Unavailable Exception" 
did not return much :(

Any ideas which magic syscall could cause these oopses?

Thanks,
Christian.
-- 
BOFH excuse #409:

The vulcan-death-grip ping has been applied.

Re: Weird oopses with 2.6.22-rc7

[Nathan Lynch]

Hello-

Christian Kujau wrote:
> Hi there,
> 
> Since a few days I'm experiencing weird oopses on my iBook/G4 with 
> ubuntu's 2.6.22-7-powerpc and also with a vanilla 2.6.22-rc7-git8.
> 
> Now for the "weird" part: The oops happens when doing "make install" for 
> a piece of software (xine-ui media player) as *root*. No kidding, it 
> does NOT happen when I compile the software and do "make install" as a 
> normal user. This is 100% reproducible, here're some technical infos 
> before I go on describing whe I did:
> 
>  	http://nerdbynature.de/bits/2.6.22-rc7-git8/

Here's the first oops from the "dmesg" file:

 Unrecoverable FP Unavailable Exception 801 at efff20b0
 Oops: Unrecoverable FP Unavailable Exception, sig: 6 [#1]
 PREEMPT PowerMac
 Modules linked in:
 NIP: efff20b0 LR: c008dff4 CTR: efff20b0
 REGS: ef7cbd90 TRAP: 0801   Not tainted
t8)
 MSR: 00009032 <EE,ME,IR,DR>  CR: 28028428  XER: 00000000
 TASK = cfd9b800[1625] 'touch' THREAD: ef7ca000
 GPR00: efff20b0 ef7cbe40 cfd9b800 ec049240 00000002 ef7cbea0 00000000 0ff29604 
 GPR08: 00000001 eff78d00 ef7ca000 00000000 28022422 
 NIP [efff20b0] 0xefff20b0
 LR [c008dff4] permission+0x78/0x170
 Call Trace:
 [ef7cbe40] [00010942] 0x10942 (unreliable)
 [ef7cbe60] [c00ac440] do_utimes+0x1cc/0x1f4
 [ef7cbf10] [c00ac630] sys_utimensat+0xac/0x138
 [ef7cbf40] [c00118ec] ret_from_syscall+0x0/0x38


> Any ideas which magic syscall could cause these oopses?

Have you tried 2.6.22?  Linus committed a utimensat-related oops fix
right before releasing it:

http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1e5de2837c166535f9bb4232bfe97ea1f9fc7a1c

Re: Weird oopses with 2.6.22-rc7

[Christian Kujau]

On Thu, 12 Jul 2007, Nathan Lynch wrote:
> Have you tried 2.6.22?  Linus committed a utimensat-related oops fix
> right before releasing it:

Ah, this seem to have fixed http://lkml.org/lkml/2007/7/8/21 and really 
looks promising, I'll try 2.6.22-git2 now.

thanks,
Christian.
-- 
BOFH excuse #208:

Your mail is being routed through Germany ... and they're censoring us.

Re: Weird oopses with 2.6.22-rc7 [SOLVED]

[Christian Kujau]

On Fri, 13 Jul 2007, Christian Kujau wrote:
> Ah, this seem to have fixed http://lkml.org/lkml/2007/7/8/21 and really
> looks promising, I'll try 2.6.22-git2 now.

for the record: running 2.6.22-git3 now and the Oopses went away ;)

thanks,
Christian.
-- 
BOFH excuse #352:

The cables are not the same length.