https://github.com/suse/qa_test_klp
Linux Kernel Live Patching infrastructure tests
https://github.com/suse/qa_test_klp
Last synced: 5 months ago
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Linux Kernel Live Patching infrastructure tests
- Host: GitHub
- URL: https://github.com/suse/qa_test_klp
- Owner: SUSE
- License: gpl-2.0
- Created: 2017-03-31T11:57:59.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2025-04-25T07:17:28.000Z (5 months ago)
- Last Synced: 2025-04-25T08:24:57.039Z (5 months ago)
- Language: Shell
- Size: 86.9 KB
- Stars: 6
- Watchers: 7
- Forks: 8
- Open Issues: 0
-
Metadata Files:
- Readme: README
- License: COPYING
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README
Shell scripts to stress Linux Kernel Live Patching infrastructure. These
scripts try to induce a few stressful situations for the live patching
infrastructure in the hope of making bugs creep out of their hideouts.
Brief test case description
---------------------------
TC3 Patch under pressure (already tested on kselftests)
* Patch a heavily hammered function in kernel.
TC5 Test kernel live patching in quick succession
* Apply one patch after another in quick succession.
TC6 Patch while CPUs are busy
* Make CPUs busy in user space and patch.
TC7 Test kernel live patching in low-memory condition
* Run a workload that will bring the system close to OOM and then start
patching.
* Requires hiworkload (needs to be compiled).
TC8 Patch with replace-all (already tested on kselftests)
* Make sure "replace-all" KLP function works as expected.
TC10 Patch caller of graph traced callee
* Check that the reliable stacktrace implementation is able to
discover callers of graph traced functions.
TC11 Patch function sleeping in a fault
* Make sure that a patch to function sleeping in a fault exception
gets blocked.
TC12 Patch caller of kretprobed callee
* Check that the reliable stacktrace implementation is able to
discover callers of functions with a kretprobe on them.
TC13 Patch traced function
* Patch a function which is being traced and check that the live
patch really is in effect.
TC14 Trace patched function (already tested in kselftests)
* Trace a patched function and check that the live patch remains
in effect.
TC15 Patch graph-traced function
* Patch a function which is being graph-traced and check that the
live patch really is in effect.
TC16 Graph-trace patched function
* Graph-trace a patched function and check that the live patch
remains in effect.
TC17 Check that patching a kprobed function fails (already tested on ksefltests)
* Patch a function with a kprobe on it and check that the live
patch fails to load: kprobes' and live patching ftrace_ops both
have FTRACE_OPS_FL_IPMODIFY set.
Supported platforms
-------------------
This test suite is supported and regularly tested on:
* SUSE Linux Enterprise 12 SP4 and newer
* SUSE Linux Enterprise 15 GA and newer
* openSUSE Tumbleweed
Following distros are supported in the sense that there is intention to allow
running qa_test_klp on them but there may be no regular testing done on these
distros. If anything is broken in this area, we welcome bug reports and
patches.
* Debian 10 and newer
* Fedora 31 and newer
* openSUSE Leap 15.1 and newer
Supported hardware architectures include **x86_64/amd64**, **ppc64le** and
**s390x**.