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[Qemu-devel] [PATCH 0/3] qemu-gdb: add functionality for inspecting core
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 0/3] qemu-gdb: add functionality for inspecting core dumps |
Date: |
Mon, 12 Oct 2015 10:02:51 +0200 |
Currently it is very hard to inspect coroutine in core dumps, because
none of the qemu-gdb functionality works. Fixing this is not really
possible because "bt" only works on the core dump's stack pointer and
program counter, but the situation would improve noticeably if only
a coroutine's stack pointer and program counter were accessible at all;
that would allow inspecting the coroutine's stack and building a
stack trace from the hex dump of the stack.
The main hurdle is that glibc_pointer_guard() cannot be run on a core
dump, because get_fs_base() uses the arch_prctl system call. The first
patch modifies that to use the gdb API instead. The second and third
patch then add the new functions.
Paolo
Paolo Bonzini (3):
qemu-gdb: allow using glibc_pointer_guard() on core dumps
qemu-gdb: extract parts of "qemu coroutine" implementation
qemu-gdb: add $qemu_coroutine_sp and $qemu_coroutine_pc
scripts/qemu-gdb.py | 3 ++
scripts/qemugdb/coroutine.py | 90 +++++++++++++++++++++++++++++---------------
2 files changed, 62 insertions(+), 31 deletions(-)
--
2.5.0
- [Qemu-devel] [PATCH 0/3] qemu-gdb: add functionality for inspecting core dumps,
Paolo Bonzini <=