Hi Prabhakar, On Tue, Nov 26, 2019 at 1:04 PM Prabhakar Kushwaha <prabhakar.pkin@xxxxxxxxx> wrote: > > Hi All, > > I am facing issue below error with latest kexec-tools/vmcore-demsg tools. > > $ ./build/sbin/vmcore-dmesg /proc/vmcore > No program header covering vaddr 0xffff000be7a00000found kexec bug? > > I am testing on AARM64 platform with following git repos. > A) kexec tools: > https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git > top commit: bd077966e2b9041c (kexec-tools: Fix conversion overflow > when compiling on 32-bit platforms) > > B) Linux:git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > top commit: af42d3466bdc8f3980 (Linux 5.4-rc8) > > I am seeing similar issue in past also in couple of discussions. has > it not fixed earlier or it keep arises with time to time > > Please suggest. Thanks for reporting the issue. I think the issue with the latest ARM64 kernel and kexec-tools is the same as the makedumpfile, i.e. the PAGE_OFFSET calculation needs to be dynamically done for 52-bit VA_BITS correctly as well. I think the VA_BITS calculation via _stext symbol will not work well for 52-bit case, because the 52nd and 48th bit are both set in such a case (I already have a conversation going on with the arm64 maintainers on how to get around this issue). Until we agree on a formal approach with the arm64 miantainer, I will try to send a patch (soon) to fix this kexec-tools issue in a generic way (for 52-bit and 48-bit VA_BITS values). Regards, Bhupesh _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
