qemu can make elf vmcore without kdump in kernel. So kernel may not
have "kexec_crash_image" symbol.
Without this patch, kdump_backup_region_init() stops main_loop with
error.
---
netdump.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff -puN netdump.c~check-kexec_crash_image netdump.c
--- crash-64/netdump.c~check-kexec_crash_image 2016-03-29 19:38:08.556253626 +0900
+++ crash-64-hirofumi/netdump.c 2016-03-29 19:38:08.557253630 +0900
@@ -4458,11 +4458,14 @@ kdump_backup_region_init(void)
} else
return;
- if (!readmem(symbol_value("kexec_crash_image"), KVADDR,
- &kexec_crash_image_p, sizeof(ulong),
- "kexec backup region: kexec_crash_image",
- QUIET|RETURN_ON_ERROR))
- goto error;
+ if (symbol_exists("kexec_crash_image")) {
+ if (!readmem(symbol_value("kexec_crash_image"), KVADDR,
+ &kexec_crash_image_p, sizeof(ulong),
+ "kexec backup region: kexec_crash_image",
+ QUIET|RETURN_ON_ERROR))
+ goto error;
+ } else
+ kexec_crash_image_p = 0;
if (!kexec_crash_image_p) {
if (CRASHDEBUG(1))
_
--
OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
--
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