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UPSTREAM: rust: kbuild: do not export generated KASAN ODR symbols

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ASAN generates special synthetic symbols to help check for ODR
violations. These synthetic symbols lack debug information, so
gendwarfksyms emits warnings when processing them. No code should ever
have a dependency on these symbols, so we should not be exporting them,
just like the __cfi symbols.

Signed-off-by: Matthew Maurer <mmaurer@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20250122-gendwarfksyms-kasan-rust-v1-1-5ee5658f4fb6@google.com
[ Fixed typo in commit message. Slightly reworded title. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Bug: 347787665
(cherry picked from commit 0e446e3145011b8fe39759b59bd69d39fb47cfeb)
Change-Id: I363f0ff84e8247a43bceffabce1806328a2636fb
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
This commit is contained in:
Matthew Maurer
2025-01-22 00:14:43 +00:00
committed by Giuliano Procida
parent 30844cb972
commit 1c8ad988ac
1 changed files with 1 additions and 1 deletions
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2
rust/Makefile
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@@ -331,7 +331,7 @@ $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ;
$(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers/helpers.c FORCE
$(call if_changed_dep,bindgen)
rust_exports = $(NM) -p --defined-only $(1) | awk '$$2~/(T|R|D|B)/ && $$3!~/__cfi/ { printf $(2),$$3 }'
rust_exports = $(NM) -p --defined-only $(1) | awk '$$2~/(T|R|D|B)/ && $$3!~/__cfi/ && $$3!~/__odr_asan/ { printf $(2),$$3 }'
quiet_cmd_exports = EXPORTS $@
cmd_exports = \