linux-kernel - Re: [PATCH] selftests: livepatch: add test case of stack

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Message-ID: <20241007173909.klwdxcui6slmod2a@treble>
Date: Mon, 7 Oct 2024 10:39:09 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Wardenjohn <zhangwarden@...il.com>
Cc: mbenes@...e.cz, jikos@...nel.org, pmladek@...e.com,
	joe.lawrence@...hat.com, live-patching@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests: livepatch: add test case of stack_order sysfs
 interface

On Mon, Oct 07, 2024 at 10:11:39PM +0800, Wardenjohn wrote:
> Add test case of stack_order sysfs interface of livepatch.
> 
> Signed-off-by: Wardenjohn <zhangwarden@...il.com>
> ---
>  .../testing/selftests/livepatch/test-sysfs.sh | 24 +++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/tools/testing/selftests/livepatch/test-sysfs.sh b/tools/testing/selftests/livepatch/test-sysfs.sh
> index 05a14f5a7bfb..81776749a4e3 100755
> --- a/tools/testing/selftests/livepatch/test-sysfs.sh
> +++ b/tools/testing/selftests/livepatch/test-sysfs.sh
> @@ -19,6 +19,7 @@ check_sysfs_rights "$MOD_LIVEPATCH" "enabled" "-rw-r--r--"
>  check_sysfs_value  "$MOD_LIVEPATCH" "enabled" "1"
>  check_sysfs_rights "$MOD_LIVEPATCH" "force" "--w-------"
>  check_sysfs_rights "$MOD_LIVEPATCH" "replace" "-r--r--r--"
> +check_sysfs_rights "$MOD_LIVEPATCH" "stack_order" "-r--r--r--"
>  check_sysfs_rights "$MOD_LIVEPATCH" "transition" "-r--r--r--"
>  check_sysfs_value  "$MOD_LIVEPATCH" "transition" "0"
>  check_sysfs_rights "$MOD_LIVEPATCH" "vmlinux/patched" "-r--r--r--"
> @@ -131,4 +132,27 @@ livepatch: '$MOD_LIVEPATCH': completing unpatching transition
>  livepatch: '$MOD_LIVEPATCH': unpatching complete
>  % rmmod $MOD_LIVEPATCH"
>  
> +start_test "sysfs test stack_order read"
> +
> +load_lp $MOD_LIVEPATCH
> +
> +check_sysfs_rights "$MOD_LIVEPATCH" "stack_order" "-r--r--r--"
> +check_sysfs_value  "$MOD_LIVEPATCH" "stack_order" "1"

At the very least this should load more than one module so it can verify
the stack orders match the load order.

-- 
Josh