Commit Graph

1 Commits

Author SHA1 Message Date
Tao Liu
50bb8b701f check for invalid physical address of /proc/kcore when making ELF dumpfile
Backport from upstream.

commit 9a6f589d99dcef114c89fde992157f5467028c8f
Author: Tao Liu <ltao@redhat.com>
Date:   Fri Jun 18 18:28:04 2021 +0800

    [PATCH] check for invalid physical address of /proc/kcore when making ELF dumpfile

    Previously when executing makedumpfile with -E option against
    /proc/kcore, makedumpfile will fail:

      # makedumpfile -E -d 31 /proc/kcore kcore.dump
      ...
      write_elf_load_segment: Can't convert physaddr(ffffffffffffffff) to an offset.

      makedumpfile Failed.

    It's because /proc/kcore contains PT_LOAD program headers which have
    physaddr (0xffffffffffffffff).  With -E option, makedumpfile will
    try to convert the physaddr to an offset and fails.

    Skip the PT_LOAD program headers which have such physaddr.

    Signed-off-by: Tao Liu <ltao@redhat.com>
    Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
2021-06-28 15:52:21 +08:00