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? Thanks, tglx
