[Qemu-devel] [PATCH 0/4] qemugdb: coroutine backtrace for coredump - Vladimir Sementsov-Ogievskiy

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-devel@nongnu.org
Cc: stefanha@redhat.com, pbonzini@redhat.com,
	vsementsov@virtuozzo.com, den@openvz.org
Subject: [Qemu-devel] [PATCH 0/4] qemugdb: coroutine backtrace for coredump
Date: Wed, 28 Mar 2018 20:32:34 +0300	[thread overview]
Message-ID: <20180328173238.507470-1-vsementsov@virtuozzo.com> (raw)

Hi all. Here are some qemugdb enhancements around qemu coroutine command.
The main feature is a backtrace for coroutine, when debugging with a
coredump file.

The problem is that we can't get coroutine backtrace through obvious way
 - set regs
 - bt
 - restore regs
when debugging a coredump.
So, let's go hard way: clone current coredump file, patch regs
in it and execute a subprocess gdb to get backtrace from this
patched coredump.

Vladimir Sementsov-Ogievskiy (4):
  scripts/qemugdb: get pthread_self from "info threads" command
  scripts/qemugdb: improve "qemu coroutine" command
  scripts/qemugdb: add coredump.py for coredump patching
  scripts/qemugdb: backtraces for coroutines in coredump

 scripts/qemugdb/coredump.py  | 51 ++++++++++++++++++++++++++++++++++++++++++
 scripts/qemugdb/coroutine.py | 53 +++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 99 insertions(+), 5 deletions(-)
 create mode 100644 scripts/qemugdb/coredump.py

-- 
2.11.1