Am 19.09.2010 13:48, schrieb Simon Horman: > On Sat, Sep 18, 2010 at 05:18:46PM +0300, Julian Anastasov wrote: >> > >> > Change the usage of svc usecnt during command execution: >> > >> > - we check if svc is registered but we do not need to hold usecnt >> > reference while under __ip_vs_mutex, only the packet handling needs >> > it during scheduling >> > >> > - change __ip_vs_service_get to __ip_vs_service_find and >> > __ip_vs_svc_fwm_get to __ip_vs_svc_fwm_find because now caller >> > will increase svc->usecnt >> > >> > - put common code that calls update_service in __ip_vs_update_dest >> > >> > - put common code in ip_vs_unlink_service() and use it to unregister >> > the service >> > >> > - add comment that svc should not be accessed after ip_vs_del_service >> > anymore >> > >> > - all IP_VS_WAIT_WHILE calls are now unified: usecnt > 0 >> > >> > - Properly log the app ports >> > >> > As result, some problems are fixed: >> > >> > - possible use-after-free of svc in ip_vs_genl_set_cmd after >> > ip_vs_del_service because our usecnt reference does not guarantee that >> > svc is not freed on refcnt==0, eg. when no dests are moved to trash >> > >> > - possible usecnt leak in do_ip_vs_set_ctl after ip_vs_del_service >> > when the service is not freed now, for example, when some >> > destionations are moved into trash and svc->refcnt remains above 0. >> > It is harmless because svc is not in hash anymore. >> > >> > Signed-off-by: Julian Anastasov <ja@xxxxxx> > Hi Julian, > > thats a pretty big patch to review, but it looks good to me. Indeed, I'd prefer slightly smaller patches too. > Acked-by: Simon Horman <horms@xxxxxxxxxxxx> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe lvs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
