* [5.15] Please apply 'selftest/lkdtm: Skip stack-entropy test if lkdtm is not available'
@ 2023-02-17 22:17 Andrew Paniakin
2023-02-18 10:29 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Andrew Paniakin @ 2023-02-17 22:17 UTC (permalink / raw)
To: stable; +Cc: luizcap, keescook, shuah, linux-kselftest, linux-kernel, apanyaki
commit 90091c367e74d5b58d9ebe979cc363f7468f58d3 upstream.
This patch fixes the stack-entropy.sh test to exit gracefully when the LKDTM is
not available. Test will hang otherwise as reported in [1].
Applicability of this fix to other LTS kernels:
- 4.14: No lkdtm selftest
- 4.19: No lkdtm selftest
- 5.4: No lkdtm selftests
- 5.10: Inital selftest version introduced in 46d1a0f03d661 ("selftests/lkdtm:
Add tests for LKDTM targets") is a single script which has the LKDTM
availability check
- 6.1: Fix applied
This patch applies cleanly to stable-5.15 tree. Updated test was executed in
Qemu VM with different kernels:
- CONFIG_LKDTM not enabled. Test finished with status SKIP.
- CONFIG_LKDTM enabled. Test failed (but not hanged) with error 'Stack entropy
is low'.
- CONFIG_LKDTM enabled and randomize_kstack_offset=on boot argument provided.
Test succeed.
[1] https://lore.kernel.org/lkml/2836f48a-d4e2-7f00-f06c-9f556fbd6332@linuxfoundation.org
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [5.15] Please apply 'selftest/lkdtm: Skip stack-entropy test if lkdtm is not available'
2023-02-17 22:17 [5.15] Please apply 'selftest/lkdtm: Skip stack-entropy test if lkdtm is not available' Andrew Paniakin
@ 2023-02-18 10:29 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2023-02-18 10:29 UTC (permalink / raw)
To: Andrew Paniakin
Cc: stable, luizcap, keescook, shuah, linux-kselftest, linux-kernel
On Fri, Feb 17, 2023 at 02:17:05PM -0800, Andrew Paniakin wrote:
> commit 90091c367e74d5b58d9ebe979cc363f7468f58d3 upstream.
>
> This patch fixes the stack-entropy.sh test to exit gracefully when the LKDTM is
> not available. Test will hang otherwise as reported in [1].
>
> Applicability of this fix to other LTS kernels:
> - 4.14: No lkdtm selftest
> - 4.19: No lkdtm selftest
> - 5.4: No lkdtm selftests
> - 5.10: Inital selftest version introduced in 46d1a0f03d661 ("selftests/lkdtm:
> Add tests for LKDTM targets") is a single script which has the LKDTM
> availability check
> - 6.1: Fix applied
>
> This patch applies cleanly to stable-5.15 tree. Updated test was executed in
> Qemu VM with different kernels:
> - CONFIG_LKDTM not enabled. Test finished with status SKIP.
> - CONFIG_LKDTM enabled. Test failed (but not hanged) with error 'Stack entropy
> is low'.
> - CONFIG_LKDTM enabled and randomize_kstack_offset=on boot argument provided.
> Test succeed.
>
> [1] https://lore.kernel.org/lkml/2836f48a-d4e2-7f00-f06c-9f556fbd6332@linuxfoundation.org
Now queued up, thanks.
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-02-17 22:17 [5.15] Please apply 'selftest/lkdtm: Skip stack-entropy test if lkdtm is not available' Andrew Paniakin
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