On (06/13/18 09:52), Dmitry Vyukov wrote: > I think this is: > > #syz dup: KASAN: use-after-free Read in rds_cong_queue_updates
Indeed. We'd had a discussion about getting a dump of threads using sysrq (or similar), given the challenges around actually getting a crash dump, is that now possible? That will certainly help. another missing bit is that we still need the sychronize_net() in rds_release(). I realize synchronize_net() is sub-optimal for perf, but leaving this existing hole where races can occur in unexpected manifestations is not ideal either. (See https://www.spinics.net/lists/netdev/msg475074.html for earlier discussion thread) --Sowmini