On Fri, Dec 04, 2020 at 04:08:27PM +0100, Thomas Gleixner wrote: > On Fri, Dec 04 2020 at 14:26, Corentin Labbe wrote: > > On Fri, Dec 04, 2020 at 12:34:05AM +0100, Thomas Gleixner wrote: > >> The unmap comes from sg_miter_stop() and looking at the previous > >> map/unmap cycles there are never nested maps. > >> > >> [ 996.943030] cryptset-316 0d..4 73943317us : __kmap_local_pfn_prot: kmap_local_pfn: 1 ffefd000 > >> > >> is the first event which allocates a nested map. > >> > >> So something goes south either in sg_miter or in the crypto maze. > >> > >> Enabling CONFIG_DEBUG_KMAP_LOCAL and function tracing might give us more clue. > > > > Done, http://kernel.montjoie.ovh/130466.log > > Does not provide more information with the debug enabled. So can you > please enable CONFIG_FUNCTION_TRACER and add 'ftrace=function' to the > command line? > Done, http://kernel.montjoie.ovh/130490.log
