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commit cf8c59a3756b2735c409a9b3ac1e4ec556546a7a upstream. A single & will create a background process and return true, so the grep command will run even if the file checked in the first condition does not exist. Link: https://lore.kernel.org/all/20230112114215.17103-1-antonio.feijoo@suse.com/ Fixes: 1eaad3ac3f39 ("tools/bootconfig: Use per-group/all enable option in ftrace2bconf script") Signed-off-by: Antonio Alvarez Feijoo <antonio.feijoo@suse.com> Cc: stable@vger.kernel.org Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>