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From 9a6f589d99dcef114c89fde992157f5467028c8f Mon Sep 17 00:00:00 2001
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From: Tao Liu <ltao@redhat.com>
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Date: Fri, 18 Jun 2021 18:28:04 +0800
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Subject: [PATCH] check for invalid physical address of /proc/kcore
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when making ELF dumpfile
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Previously when executing makedumpfile with -E option against
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/proc/kcore, makedumpfile will fail:
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# makedumpfile -E -d 31 /proc/kcore kcore.dump
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...
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write_elf_load_segment: Can't convert physaddr(ffffffffffffffff) to an offset.
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makedumpfile Failed.
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It's because /proc/kcore contains PT_LOAD program headers which have
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physaddr (0xffffffffffffffff). With -E option, makedumpfile will
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try to convert the physaddr to an offset and fails.
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Skip the PT_LOAD program headers which have such physaddr.
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Signed-off-by: Tao Liu <ltao@redhat.com>
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Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
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---
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makedumpfile.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/makedumpfile-1.6.8/makedumpfile.c b/makedumpfile-1.6.8/makedumpfile.c
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index 894c88e..fcb571f 100644
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--- a/makedumpfile-1.6.8/makedumpfile.c
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+++ b/makedumpfile-1.6.8/makedumpfile.c
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@@ -7764,7 +7764,7 @@ write_elf_pages_cyclic(struct cache_data *cd_header, struct cache_data *cd_page)
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if (!get_phdr_memory(i, &load))
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return FALSE;
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- if (load.p_type != PT_LOAD)
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+ if (load.p_type != PT_LOAD || load.p_paddr == NOT_PADDR)
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continue;
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off_memory= load.p_offset;
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--
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2.29.2
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