Re: 2.4.0 kernel paging error

[Mark Hindley]

Philipp Rumpf writes:
 > On Wed, Jan 10, 2001 at 05:55:05PM +0100, Daniel Phillips wrote:
 > > Mark Hindley wrote:
 > > > I am running 2.4.0 final. I got the following failed paging request which
 > > > produced a complete freeze.
 > > > 
 > > > As you can see it was precipitated by cron starting to run some
 > > > housekeeping stuff overnight.
 > > > 
 > > > Has anyone else had prblems?
 > > 
 > > It looks real.  It was executing this line of clear_inode in fs/inode.c:
 > > 
 > > 380         if (inode->i_sb && inode->i_sb->s_op && inode->i_sb->s_op->clear_inode)
 > >                                                                      ^^^^^^^^^^^^^
 > >                                            and it blew up here ----->
 > 
 > > Unable to handle kernel paging request at virtual address c4870840
 > 
 > I'm pretty sure this is a vmalloc/module address, which would mean ->s_op
 > points to a module that has been unloaded.  This sounds consistent with the
 > "cron starting to run some housekeeping stuff" above.
 > 
 > Mark, which file systems are you using ?

I have ext2 (builtin) and autoload [v]fat, msdos, hfs, iso9660 and
occasionally (but not recently) udf as modules for removable media.

vfat is loaded all the time as I have a couple of partitions from
another OS I used to use permantently mounted RO.

As far as I can remember hfs and iso9660 were the only other ones I had used
just before this happened.

As I use the kernel module autoloader I also have a cron entry for rmmod -a
which runs every so often to clear out the unused modules. Although
the logs record rmmod running, they don't say what if any modules were
removed.

Mark