6.8-stable review patch. If anyone has any objections, please let me know.
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From: Miguel Ojeda ojeda@kernel.org
commit 50cfe93b01475ba36878b65d35d812e1bb48ac71 upstream.
When KUnit tests are enabled, under very big kernel configurations (e.g. `allyesconfig`), we can trigger a `rustdoc` ICE [1]:
RUSTDOC TK rust/kernel/lib.rs error: the compiler unexpectedly panicked. this is a bug.
The reason is that this build step has a duplicated `@rustc_cfg` argument, which contains the kernel configuration, and thus a lot of arguments. The factor 2 happens to be enough to reach the ICE.
Thus remove the unneeded `@rustc_cfg`. By doing so, we clean up the command and workaround the ICE.
The ICE has been fixed in the upcoming Rust 1.79 [2].
Cc: stable@vger.kernel.org Fixes: a66d733da801 ("rust: support running Rust documentation tests as KUnit ones") Link: https://github.com/rust-lang/rust/issues/122722 [1] Link: https://github.com/rust-lang/rust/pull/122840 [2] Reviewed-by: Alice Ryhl aliceryhl@google.com Link: https://lore.kernel.org/r/20240422091215.526688-1-ojeda@kernel.org Signed-off-by: Miguel Ojeda ojeda@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- rust/Makefile | 1 - 1 file changed, 1 deletion(-)
--- a/rust/Makefile +++ b/rust/Makefile @@ -175,7 +175,6 @@ quiet_cmd_rustdoc_test_kernel = RUSTDOC mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) --test $(rust_flags) \ - @$(objtree)/include/generated/rustc_cfg \ -L$(objtree)/$(obj) --extern alloc --extern kernel \ --extern build_error --extern macros \ --extern bindings --extern uapi \