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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-12-12 17:27:58 +0100 |
|---|---|---|
| committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-01-02 14:49:54 +0100 |
| commit | c3b1642b9b6b3ba4314d6be3be509d396372cfd5 (patch) | |
| tree | e068590df7c404eed261e319f797cc0e38450947 | |
| parent | c983ca845782bf91171b5ec4e59d122a21229745 (diff) | |
| download | qemu-c3b1642b9b6b3ba4314d6be3be509d396372cfd5.zip qemu-c3b1642b9b6b3ba4314d6be3be509d396372cfd5.tar.gz qemu-c3b1642b9b6b3ba4314d6be3be509d396372cfd5.tar.bz2 | |
dump-guest-memory.py: fix "You can't do that without a process to debug"
If the script is run with a core (no running process), it produces an
error:
(gdb) dump-guest-memory /tmp/vmcore X86_64
guest RAM blocks:
target_start target_end host_addr message count
---------------- ---------------- ---------------- ------- -----
0000000000000000 00000000000a0000 00007f7935800000 added 1
00000000000a0000 00000000000b0000 00007f7934200000 added 2
00000000000c0000 00000000000ca000 00007f79358c0000 added 3
00000000000ca000 00000000000cd000 00007f79358ca000 joined 3
00000000000cd000 00000000000e8000 00007f79358cd000 joined 3
00000000000e8000 00000000000f0000 00007f79358e8000 joined 3
00000000000f0000 0000000000100000 00007f79358f0000 joined 3
0000000000100000 0000000080000000 00007f7935900000 joined 3
00000000fd000000 00000000fe000000 00007f7934200000 added 4
00000000fffc0000 0000000100000000 00007f7935600000 added 5
Python Exception <class 'gdb.error'> You can't do that without a process to debug.:
Error occurred in Python command: You can't do that without a process
to debug.
Replace the object_resolve_path_type() function call with a local
volatile variable.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
| -rw-r--r-- | hw/misc/vmcoreinfo.c | 3 | ||||
| -rw-r--r-- | scripts/dump-guest-memory.py | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/hw/misc/vmcoreinfo.c b/hw/misc/vmcoreinfo.c index 31db57a..a280552 100644 --- a/hw/misc/vmcoreinfo.c +++ b/hw/misc/vmcoreinfo.c @@ -35,6 +35,8 @@ static void vmcoreinfo_realize(DeviceState *dev, Error **errp) { VMCoreInfoState *s = VMCOREINFO(dev); FWCfgState *fw_cfg = fw_cfg_find(); + /* for gdb script dump-guest-memory.py */ + static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED; /* Given that this function is executing, there is at least one VMCOREINFO * device. Check if there are several. @@ -56,6 +58,7 @@ static void vmcoreinfo_realize(DeviceState *dev, Error **errp) &s->vmcoreinfo, sizeof(s->vmcoreinfo), false); qemu_register_reset(vmcoreinfo_reset, dev); + vmcoreinfo_state = s; } static const VMStateDescription vmstate_vmcoreinfo = { diff --git a/scripts/dump-guest-memory.py b/scripts/dump-guest-memory.py index 1af26c1..09bec92 100644 --- a/scripts/dump-guest-memory.py +++ b/scripts/dump-guest-memory.py @@ -546,8 +546,7 @@ shape and this command should mostly work.""" return None def add_vmcoreinfo(self): - vmci = '(VMCoreInfoState *)' + \ - 'object_resolve_path_type("", "vmcoreinfo", 0)' + vmci = 'vmcoreinfo_realize::vmcoreinfo_state' if not gdb.parse_and_eval("%s" % vmci) \ or not gdb.parse_and_eval("(%s)->has_vmcoreinfo" % vmci): return |