> Quoting Ingo Molnar <[EMAIL PROTECTED]>: > Subject: Re: lockdep question (was Re: IPoIB caused a kernel: BUG: softlockup > detected on CPU#0!) > > > * Michael S. Tsirkin <[EMAIL PROTECTED]> wrote: > > > > So either there are other sites that instanciate those objects and > > > forget about the lock init, or the object is corrupted (use after free?) > > > > OK, thanks for the hint. So I added this: > > > And sure enough it triggers: > > > > [ 858.503010] ipoib_neigh_destructor lock c0687880 wrong type 772 > > !!!!!!!!!! > > could you turn on CONFIG_SLAB_DEBUG as well? > > that should catch certain types of use-after-free accesses, and lockdep > will also warn if a still locked object is freed.
Hmm, no, this does not look like use-after-free. I enabled CONFIG_SLAB_DEBUG, and I still see the same message, so the memory was not overwritten by slab debugger. -- MST _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
