-----Original Message----- From: crash-utility-bounces(a)redhat.com <crash-utility-bounces(a)redhat.com&gt; On Behalf Of Linu Cherian Sent: Friday, January 7, 2022 2:14 PM To: crash-utility(a)redhat.com Cc: Sunil Kovvuri Goutham <sgoutham(a)marvell.com&gt; Subject: [Crash-utility] Ptdump extension module incompatibility with Linux version >=5.5 Hi, While experimenting ptdump extension module with Kernel version 5.8.x , came across few incompatibility issues. struct ring_buffer got renamed to struct perf_buffer starting from kernel version 5.5 and seems the latest ptdump extension available here is https://github.com/crash-utility/crash-extensions/raw/master/ptdump-1.0.7... not updated and still uses the “struct ring_buffer”. Hence, “/* array of struct pages for pt buffer */ if(!get_member(struct_ring_buffer, "ring_buffer", "aux_pages", &aux_pages)) return FALSE;” was failing in ptdump.c Few questions. 1. Do we have a extension module maintained somewhere else that supports the later kernels >=5.5 2. How do we usually manage such incompatibility issues (dependency on Kernel structures)? Was trying to explore the arm64 solution in line with ptdump. Thanks.