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dump-guest-memory.py: skip vmcoreinfo section if not available 

On some architectures, qemu doesn't support vmcoreinfo device,
and dump-guest-memory fails:

(gdb) dump-guest-memory /tmp/vmcore  ppc64-le
guest RAM blocks:
target_start     target_end       host_addr        message count
---------------- ---------------- ---------------- ------- -----
0000000000000000 0000000200000000 00003ffd86980000 added       1
0000200080000000 0000200080800000 00003ffd86170000 added       2
Python Exception <class 'gdb.error'> No symbol "vmcoreinfo_realize" in current context.:
Error occurred in Python command: No symbol "vmcoreinfo_realize" in current context.

Check that vmcoreinfo_realize symbol exists before evaluating an
expression with it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Marc-André Lureau 2018-01-31 11:37:24 +01:00
parent b05631954d
commit ce6b9e421a
1 changed files with 2 additions and 0 deletions
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2
scripts/dump-guest-memory.py
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@ -546,6 +546,8 @@ shape and this command should mostly work."""
return None
def add_vmcoreinfo(self):
if gdb.lookup_symbol("vmcoreinfo_realize")[0] is None:
return
vmci = 'vmcoreinfo_realize::vmcoreinfo_state'
if not gdb.parse_and_eval("%s" % vmci) \
or not gdb.parse_and_eval("(%s)->has_vmcoreinfo" % vmci):