The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 222a28edce38b62074a950fb243df621c602b4d3 Mon Sep 17 00:00:00 2001
From: Kees Cook keescook@chromium.org Date: Thu, 17 Jun 2021 15:58:08 -0700 Subject: [PATCH] docs: Makefile: Use CONFIG_SHELL not SHELL
Fix think-o about which variable to find the Kbuild-configured shell. This has accidentally worked due to most shells setting $SHELL by default.
Fixes: 51e46c7a4007 ("docs, parallelism: Rearrange how jobserver reservations are made") Cc: stable@vger.kernel.org Signed-off-by: Kees Cook keescook@chromium.org Link: https://lore.kernel.org/r/20210617225808.3907377-1-keescook@chromium.org Signed-off-by: Jonathan Corbet corbet@lwn.net
diff --git a/Documentation/Makefile b/Documentation/Makefile index 9c42dde97671..c3feb657b654 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -76,7 +76,7 @@ quiet_cmd_sphinx = SPHINX $@ --> file://$(abspath $(BUILDDIR)/$3/$4) PYTHONDONTWRITEBYTECODE=1 \ BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \ $(PYTHON3) $(srctree)/scripts/jobserver-exec \ - $(SHELL) $(srctree)/Documentation/sphinx/parallel-wrapper.sh \ + $(CONFIG_SHELL) $(srctree)/Documentation/sphinx/parallel-wrapper.sh \ $(SPHINXBUILD) \ -b $2 \ -c $(abspath $(srctree)/$(src)) \