Date: Mon, 08 May 2017 21:22:00 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 219153] head, stable/11, release/11.0.1: libkvm (& more?) not updated to handle powerpc/powerpc64 ET_DYN based vmcore.* 's and such Message-ID: <bug-219153-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219153 Bug ID: 219153 Summary: head, stable/11, release/11.0.1: libkvm (& more?) not updated to handle powerpc/powerpc64 ET_DYN based vmcore.* 's and such Product: Base System Version: CURRENT Hardware: powerpc OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: markmi@dsl-only.net [stable/11 and release/11.0.1 likely have the same issue but the work would start in head so I picked CURRENT since multi-select is not available.] powerpc and powerpc64 use position independent kernels these days and as such have kd->nlehdr.e_type =3D=3D ET_DYN (stated in libkvm terms). But libkvm rejects all but ET_EXEC via: _kvm_probe_elf_kernel(kvm_t *kd, int class, int machine) { return (kd->nlehdr.e_ident[EI_CLASS] =3D=3D class && kd->nlehdr.e_type =3D=3D ET_EXEC && kd->nlehdr.e_machine =3D=3D machine); } There may be more than just this test needed to work for ET_DYN for all I know. But the test being unchanged suggests that libkvm was not adjusted at all to be compatible with the newer type of kernels that powerpc and powerpc64 switched to. There may be more infrastructure around than just libkvm that has not been updated to handle ET_DYN based kernels for at least powerpc and powerpc64, where they are in use for sure. FYI: 20150307: The 32-bit PowerPC kernel has been changed to a position-independent executable. This can only be booted with a version of loader(8) newer than January 31, 2015, so make sure to update both world and kernel before rebooting. . . . 20150131: The powerpc64 kernel has been changed to a position-independent executable. This can only be booted with a new version of loader(8), so make sure to update both world and kernel before rebooting. --=20 You are receiving this mail because: You are the assignee for the bug.=
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