On 05/08/2013 10:37 PM, Sujith Manoharan wrote: > gree...@candelatech.com wrote: >> From: Ben Greear <gree...@candelatech.com> >> >> With CONFIG_ATH9K_DEBUGFS enabled, and slub memory poisoning >> enabled, I see this crash on rmmod of ath9k. I'm not sure how >> to fix this properly, but in the meantime, this patch to disable >> the spectral scan code works around the problem for me. >> >> With memory poisoning and the verify_mem_not_deleted code >> below added, the crash looks as follows... The dentry >> is not *always* freed at this point, probably because rcu >> callbacks haven't completed. You still get a crash soon >> after, however. > > The relay file should probably be closed before calling > ieee80211_unregister_hw(). > The ath9k debugfs directory is created inside the phy#/ directory and that > would > get cleaned up when the wiphy is unregistered. > > Does this help ?
This fixes the problem for me, and certainly is less of a hack than what I posted. I did several module unloads with memory poisoning enabled, system remains stable. Tested-by: Ben Greear <gree...@candelatech.com> Thanks, Ben -- Ben Greear <gree...@candelatech.com> Candela Technologies Inc http://www.candelatech.com _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
