# Re: \[PATCH v2\] selftests/ftrace: Add missing spaces after ! in probe syntax tests

- From: Shuah Khan \<skhan@linuxfoundation.org\>
- Date: 2026-10-28 21:06:43 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2026/10/17823242
- Thread: https://ratatoskr.run/stable/2026/10/17814120/t.md

```text
On 10/27/26 19:18, Jaewon Jung wrote:
> Add the missing space between ! and grep. Otherwise, the shell tries
> to run !grep and reports "!grep: not found". This always skips the
> conditional checks without checking for kernel return probe argument
> support.
>
> Fixes: 25f00e40ce79 ("tracing/probes: Support $argN in return probe (kprobe and fprobe)")
> Cc: <redacted>
> Signed-off-by: Jaewon Jung <redacted>
> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> ---
> Changes in v2:
> - Add Fixes, Cc stable and Acked-by tags as suggested by Masami.
>

Thank you. I will take this for 7.4-rc2.

thanks,
-- Shuah
```