2:49 a.m.
This patchset is a rebase/merged version of the following 3 patchsets:
1): [PATCH v10 0/5] Improve stack unwind on ppc64 [1]
2): [PATCH 0/5] x86_64 gdb stack unwinding support [2]
3): Clean up on top of one-thread-v2 [3]
A complete description of gdb stack unwinding support for crash can be
found in [1].
This patchset can be divided into the following 3 parts:
1) part1: preparations before stack unwinding support, some
bugs/regressions found when drafting this patchset.
2) part2: common part for all CPU archs, mainly dealing with
crash_target.c/gdb_interface.c files, in order to
support different archs.
3) part3: arch specific, for each ppc64/x86_64/arm64/vmware
stack unwinding support.
=== part 3
arm64: Add gdb stack unwinding support
vmware_guestdump: Various format versions support
x86_64: Add gdb stack unwinding support
ppc64: correct gdb passthroughs by implementing machdep->get_current_task_reg
=== part 2
Conditionally output gdb stack unwinding stop reasons
Stop stack unwinding at non-kernel address
Print task pid/command instead of CPU index
Rename get_cpu_reg to get_current_task_reg
Let crash change gdb context
Leave only one gdb thread for crash
Remove 'frame' from prohibited commands list
=== part 1
Fix gdb_interface: restore gdb's output streams at end of gdb_interface
x86_64: Fix invalid input "=>" for bt command
Fix cpumask_t recursive dependence issue
Fix the regression of cpumask_t for xen hyper
===
v7 -> v6:
1) Reorganise the patchset, re-divided them into 3 part against the
previous 2 parts.
2) Re-dealed with the cpumask_t part, which solved the comment No.4
pointed out by lianbo in [4].
3) Add conditional output for the failing message of gdb stack unwinding.
see [PATCH 11/15] Conditionally output gdb stack unwinding stop reasons
4) Redraft the commit messages, updated some outdated info.
5) Merged "Let crash change gdb context" and "set_context(): check if
context is already current" into one.
[4]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg01067.html
v6 -> v5:
1) Refactor patch 4 & 9, which changed the function signature of struct
get_cpu_reg/get_current_task_reg, and let each patch compile with no
error when added on.
2) Rebased the patchset on top of latest upstream:
("79b93ecb2e72ec Fix a "Bus error" issue caused by 'crash
--osrelease' or
crash loading")
v5 -> v4:
1) Plenty of code refactoring based on Lianbo's comments on v4.
2) Removed the magic number when dealing with regs bitmap, see [6].
3) Rebased the patchset on top of latest upstream:
("1c6da3eaff8207 arm64: Fix bt command show wrong stacktrace on ramdump
source")
v4 -> v3:
Fixed the author issue in [PATCH v3 06/16] Fix gdb_interface: restore gdb's
output streams at end of gdb_interface.
v3 -> v2:
1) Updated CC list as pointed out in [4]
2) Compiling issues as in [5]
v2 -> v1:
1) Added the patch: x86_64: Fix invalid input "=>" for bt command,
thanks for Kazu's testing.
2) Modify the patch: x86_64: Add gdb stack unwinding support, added the
pcp_save, spp_save and sp, for restoring the value in match of the original
code logic.
[1]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg00469.html
[2]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg00488.html
[3]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg00554.html
[4]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg00681.html
[5]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg00715.html
[6]: https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg00819.html
Aditya Gupta (3):
Fix gdb_interface: restore gdb's output streams at end of
gdb_interface
Remove 'frame' from prohibited commands list
ppc64: correct gdb passthroughs by implementing
machdep->get_current_task_reg
Alexey Makhalov (1):
vmware_guestdump: Various format versions support
Tao Liu (11):
Fix the regression of cpumask_t for xen hyper
Fix cpumask_t recursive dependence issue
x86_64: Fix invalid input "=>" for bt command
Leave only one gdb thread for crash
Let crash change gdb context
Rename get_cpu_reg to get_current_task_reg
Print task pid/command instead of CPU index
Stop stack unwinding at non-kernel address
Conditionally output gdb stack unwinding stop reasons
x86_64: Add gdb stack unwinding support
arm64: Add gdb stack unwinding support
arm64.c | 120 +++++++++++++++--
crash_target.c | 71 ++++++----
defs.h | 194 ++++++++++++++++++++++++++-
gdb-10.2.patch | 96 ++++++++++++++
gdb_interface.c | 39 ++----
kernel.c | 63 +++++++--
ppc64.c | 174 +++++++++++++++++++++++-
symbols.c | 15 +++
task.c | 34 +++--
tools.c | 16 ++-
unwind_x86_64.h | 4 -
vmware_guestdump.c | 321 +++++++++++++++++++++++++++++++-------------
x86_64.c | 323 ++++++++++++++++++++++++++++++++++++++++-----
13 files changed, 1247 insertions(+), 223 deletions(-)
--
2.40.1