commit 2cd578baae174c61b35a48d9016facbcc0fffbfe
author Jens Wiklander <jens.wiklander@linaro.org> Fri May 23 09:39:51 2025 +0200
committer Jerome Forissier <jerome@forissier.org> Wed Jun 04 10:38:35 2025 +0200
tree 5f5a50bc25df8a1794798312dc2eab8c73141a6a
parent bd8bea6f45b004aa153fa8d7922dec6a655f50e3

core: fix asan for CFG_WITH_PAGER=n

Some fixes are needed to make CFG_CORE_SANITIZE_KADDRESS=y work both
with and without CFG_DYN_CONFIG=y.

Sanitizing stack addresses aren't supported with CFG_DYN_CONFIG=y
since it requires extensive changes in the ASAN framework.

The VCORE_FREE area is moved right before the .asan_shadow area.

init_asan() calls boot_mem_init_asan() to tag access to already
allocated boot memory.

entry_a32.S is updated to skip allowing access to stacks in the
.asan_shadow area for CFG_DYN_CONFIG=y since stacks are stored
elsewhere in that configuration.

entry_a64.S is updated to initialize the .asan_shadow area in the same
way as in entry_a32.S.

The .asan_shadow area is mapped explicitly in collect_mem_ranges()
instead of relying on the now non-existent coverage of
MEM_AREA_TEE_RAM_RW.

CFG_DYN_CONFIG=y and CFG_WITH_PAGER=y is not yet known to work.

Fixes: 1c1f8b65b5c6 ("core: mm: unify secure core and TA memory")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>