----- Original Message ----- > On Mon, Jan 14, 2019 at 03:07:33PM -0500, Dave Anderson wrote: > > That's what it *does* utilize -- it takes a standalone vmcore dumpfile, and > > pulls out the OSRELEASE string from it, so that a user can determine what > > vmlinux file should be used with that vmcore for normal crash analysis. > > And the vmcoreinfo is part of the vmcore, right? Correct. > > So it can just as well read out the address of init_uts_ns and get the > kernel version from there. No. It needs *both* the vmlinux file and the vmcore file in order to read kernel virtual memory, so just having a kernel virtual address is insufficient. So it's a chicken-and-egg situation. This particular --osrelease option is used to determine *what* vmlinux file would be required for an actual crash analysis session. Dave
