This is a note to let you know that I've just added the patch titled rust: fix the default format for CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT to the 6.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rust-fix-the-default-format-for-config_-rustc-bindge.patch and it can be found in the queue-6.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 817dfccb5cb3f1aa138f12f3317e2860becd8c71 Author: Masahiro Yamada <masahiroy@xxxxxxxxxx> Date: Sat Jul 27 23:03:00 2024 +0900 rust: fix the default format for CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT [ Upstream commit aacf93e87f0d808ef46e621aa56caea336b4433c ] Another oddity in these config entries is their default value can fall back to 'n', which is a value for bool or tristate symbols. The '|| echo n' is an incorrect workaround to avoid the syntax error. This is not a big deal, as the entry is hidden by 'depends on RUST' in situations where '$(RUSTC) --version' or '$(BINDGEN) --version' fails. Anyway, it looks odd. The default of a string type symbol should be a double-quoted string literal. Turn it into an empty string when the version command fails. Fixes: 2f7ab1267dc9 ("Kbuild: add Rust support") Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240727140302.1806011-2-masahiroy@xxxxxxxxxx [ Rebased on top of v6.11-rc1. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/init/Kconfig b/init/Kconfig index b5bcc863bf608..6054ba684c539 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1916,7 +1916,7 @@ config RUST config RUSTC_VERSION_TEXT string depends on RUST - default $(shell,$(RUSTC) --version 2>/dev/null || echo n) + default "$(shell,$(RUSTC) --version 2>/dev/null)" config BINDGEN_VERSION_TEXT string @@ -1924,7 +1924,7 @@ config BINDGEN_VERSION_TEXT # The dummy parameter `workaround-for-0.69.0` is required to support 0.69.0 # (https://github.com/rust-lang/rust-bindgen/pull/2678). It can be removed when # the minimum version is upgraded past that (0.69.1 already fixed the issue). - default $(shell,$(BINDGEN) --version workaround-for-0.69.0 2>/dev/null || echo n) + default "$(shell,$(BINDGEN) --version workaround-for-0.69.0 2>/dev/null)" # # Place an empty function call at each tracepoint site. Can be