BUG: lkdtm stack-entropy.sh test hangs

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To: Kees Cook <keescook@xxxxxxxxxxxx>
Subject: BUG: lkdtm stack-entropy.sh test hangs
From: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Date: Mon, 12 Jul 2021 12:31:28 -0600
Cc: linux-kselftest@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1

Hi Kees,

lkdtm stack-entropy.sh test hangs on Linux 5,14-rc1 - I tried
root and non-root cases. Both hang.

# selftests: lkdtm: stack-entropy.sh

# ./stack-entropy.sh: 13: cannot create /sys/kernel/debug/provoke-crash/DIRECT: Permission denied

If you have a fix for this, I would like to get this in soon.

thanks,
-- Shuah

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