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Add missing linker flags for memtag sanitizers.

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This fixes a discrepancy between Make and Soong build systems.
Memtag sanitizers rely on the linker to mark the executable as
requesting heap/stack/globals tagging.

Test: readelf -n <binary> | grep .note.android.memtag
Bug: 322107634
Change-Id: I4a25509ff280e25d14576157903a2bbf162a4895
This commit is contained in:
Evgenii Stepanov
2024-02-01 11:34:59 -08:00
parent 7ba1e17dcc
commit 8566eb0ee8
1 changed files with 5 additions and 2 deletions
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7
core/config_sanitizers.mk
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@@ -261,10 +261,10 @@ endif
ifneq ($(filter memtag_heap memtag_stack memtag_globals,$(my_sanitize)),)
ifneq ($(filter memtag_heap,$(my_sanitize_diag)),)
my_cflags += -fsanitize-memtag-mode=sync
my_ldflags += -fsanitize-memtag-mode=sync
my_sanitize_diag := $(filter-out memtag_heap,$(my_sanitize_diag))
else
my_cflags += -fsanitize-memtag-mode=async
my_ldflags += -fsanitize-memtag-mode=async
endif
endif
@@ -277,11 +277,13 @@ endif
ifneq ($(filter memtag_heap,$(my_sanitize)),)
my_cflags += -fsanitize=memtag-heap
my_ldflags += -fsanitize=memtag-heap
my_sanitize := $(filter-out memtag_heap,$(my_sanitize))
endif
ifneq ($(filter memtag_stack,$(my_sanitize)),)
my_cflags += -fsanitize=memtag-stack
my_ldflags += -fsanitize=memtag-stack
my_cflags += -march=armv8a+memtag
my_ldflags += -march=armv8a+memtag
my_asflags += -march=armv8a+memtag
@@ -290,6 +292,7 @@ endif
ifneq ($(filter memtag_globals,$(my_sanitize)),)
my_cflags += -fsanitize=memtag-globals
my_ldflags += -fsanitize=memtag-globals
# TODO(mitchp): For now, enable memtag-heap with memtag-globals because the
# linker isn't new enough
# (https://reviews.llvm.org/differential/changeset/?ref=4243566).