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Re: [Qemu-devel] [PATCH] dump-guest-memory.py: skip vmcoreinfo section i
From: |
Laszlo Ersek |
Subject: |
Re: [Qemu-devel] [PATCH] dump-guest-memory.py: skip vmcoreinfo section if not available |
Date: |
Wed, 31 Jan 2018 11:47:03 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 |
On 01/31/18 11:41, Marc-André Lureau wrote:
> 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 <address@hidden>
> ---
> scripts/dump-guest-memory.py | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/scripts/dump-guest-memory.py b/scripts/dump-guest-memory.py
> index 03fbf69f8a..51acfcd0c0 100644
> --- a/scripts/dump-guest-memory.py
> +++ b/scripts/dump-guest-memory.py
> @@ -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):
>
Reviewed-by: Laszlo Ersek <address@hidden>