| Date | Thu, 3 Apr 2008 16:59:02 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: 2.6.25-rc8-git2: Reported regressions from 2.6.24 |
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On Fri, 4 Apr 2008, Rafael J. Wysocki wrote: > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10390 > Subject : Oops while reading /proc/ioports or /proc/iomem > Submitter : Jan Kara <jack@suse.cz> > Date : 2008-04-03 15:25 (1 days old) > References : http://lkml.org/lkml/2008/4/3/149
This sounds very much like some module registered IO ports/memory and was then unloaded without unregistering them.
It's a bit hard to guess which module it is, though. The oops says "[last unloaded: parport]", so that's likely to be the area.
So I *suspect* this patch might be relevant. Bug apparently introduced in f63fd7e299ee13da071ecfce2b90b58c5e1562b1 ("parport_pc: detection for SuperIO IT87XX POST") by Petr Cvek.
Petr?
Linus
--- drivers/parport/parport_pc.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c index d76d37b..a858089 100644 --- a/drivers/parport/parport_pc.c +++ b/drivers/parport/parport_pc.c @@ -1568,9 +1568,8 @@ static void __devinit detect_and_report_it87(void) outb(r | 8, 0x2F); outb(0x02, 0x2E); /* Lock */ outb(0x02, 0x2F); - - release_region(0x2e, 1); } + release_region(0x2e, 1); } #endif /* CONFIG_PARPORT_PC_SUPERIO */
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