Commits on Oct 21, 2024

1. core: mm: fix mobj_tee_ram_rw initialization …

   Until this patch, for CFG_CORE_RWDATA_NOEXEC=n and CFG_CORE_ASLR=y
   there's an error in mobj_init() when the length of the combined
   TEE_RAM_RWX is calculated.
   
   The relocatable address VCORE_UNPG_RW_PA is mixed with the absolute
   address TEE_RAM_START. Relocated addresses only changes with
   CFG_CORE_ASLR=y so before ASLR this expression was correct.
   
   The combined TEE_RAM_RWX is only used with CFG_CORE_RWDATA_NOEXEC=n so
   that is also a perquisite for the error. The calculated length field is
   usually not more wrong than code depending on
   mobj_tee_ram_rw/mobj_tee_ram_rx still works. So the error wasn't visible
   until length checks for phys_to_virt() was introduced with the commit
   c2e4eb4 ("core_mmu: fix phys_to_virt() to check length").
   
   Fix this by using VCORE_START_VA instead of TEE_RAM_START since the
   former is a relocated address.
   
   Fixes: c2e4eb4 ("core_mmu: fix phys_to_virt() to check length")
   Fixes: 170e908 ("core: add support for CFG_CORE_ASLR")
   Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

   

   jenswi-linaro committed Oct 21, 2024
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