Messages in this thread | | | Date | Sat, 11 Feb 2006 21:38:49 -0800 | From | Greg KH <> | Subject | Re: sysfs-related oops during module unload (2.6.16-rc2) |
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On Sat, Feb 11, 2006 at 11:27:52PM -0600, Nathan Lynch wrote: > Greg KH wrote: > > On Sat, Feb 11, 2006 at 04:03:53PM -0600, Nathan Lynch wrote: > > > If the refcnt attribute of a module is open when the module is > > > unloaded, we get an oops when the file is closed. I used ide_cd for > > > this report but I don't think the oops is caused by the driver itself. > > > This bug seems to be restricted to the /sys/module hierarchy; it > > > doesn't happen with /sys/class etc. > > > > > > I suspect it's an extra put or a missing get somewhere, but the fix > > > isn't obvious to me after looking at it for a little while, so I'm > > > punting. > > > > > > I'm pretty sure this happens with 2.6.15; I can double-check if > > > needed. > > > > Ugh, we aren't setting the owner of these fields properly, good catch. > > > > Does the patch below (built tested only), solve this for you? > > Thanks, but no, I get the same oops. The refcnt attribute isn't part > of the modinfo_attrs array.
Ah, crap, you're right. We really need to dynamically create these attributes for every module to get the owner right. That will be a bigger patch that I'll work on on Monday...
thanks for testing,
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