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kbuild: avoid scripts/kallsyms parsing /dev/null

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BugLink: https://bugs.launchpad.net/bugs/2084005

[ Upstream commit 1472464c6248575bf2d01c7f076b94704bb32c95 ]

On macOS, as reported by Daniel Gomez, getline() sets ENOTTY to errno
if it is requested to read from /dev/null.

If this is worth fixing, I would rather pass an empty file to
scripts/kallsyms instead of adding the ugly #ifdef __APPLE__.

Fixes: c442db3f49f2 ("kbuild: remove PROVIDE() for kallsyms symbols")
Reported-by: Daniel Gomez <da.gomez@samsung.com>
Closes: https://lore.kernel.org/all/20240807-macos-build-support-v1-12-4cd1ded85694@samsung.com/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Reviewed-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Masahiro Yamada
2024-08-08 03:03:00 +09:00
committed by Mehmet Basaran
parent 79c6cf43a5
commit b74d6827b4
1 changed files with 2 additions and 1 deletions
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scripts/link-vmlinux.sh
+2 -1
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@@ -216,7 +216,8 @@ kallsymso=
strip_debug=
if is_enabled CONFIG_KALLSYMS; then
kallsyms /dev/null .tmp_vmlinux0.kallsyms
truncate -s0 .tmp_vmlinux.kallsyms0.syms
kallsyms .tmp_vmlinux.kallsyms0.syms .tmp_vmlinux0.kallsyms
fi
if is_enabled CONFIG_KALLSYMS || is_enabled CONFIG_DEBUG_INFO_BTF; then