6.6-stable review patch. If anyone has any objections, please let me know.
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From: Guo Ren guoren@linux.alibaba.com
commit 97b7ac69be2e5a683e898f5267f659fde52efdd5 upstream.
When the task is in COMPAT mode, the arch_get_mmap_end should be 2GB, not TASK_SIZE_64. The TASK_SIZE has contained is_compat_mode() detection, so change the definition of STACK_TOP_MAX to TASK_SIZE directly.
Cc: stable@vger.kernel.org Fixes: add2cc6b6515 ("RISC-V: mm: Restrict address space for sv39,sv48,sv57") Signed-off-by: Guo Ren guoren@linux.alibaba.com Signed-off-by: Guo Ren guoren@kernel.org Reviewed-by: Leonardo Bras leobras@redhat.com Reviewed-by: Charlie Jenkins charlie@rivosinc.com Link: https://lore.kernel.org/r/20231222115703.2404036-3-guoren@kernel.org Signed-off-by: Palmer Dabbelt palmer@rivosinc.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/riscv/include/asm/processor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/riscv/include/asm/processor.h +++ b/arch/riscv/include/asm/processor.h @@ -15,7 +15,7 @@
#ifdef CONFIG_64BIT #define DEFAULT_MAP_WINDOW (UL(1) << (MMAP_VA_BITS - 1)) -#define STACK_TOP_MAX TASK_SIZE_64 +#define STACK_TOP_MAX TASK_SIZE
#define arch_get_mmap_end(addr, len, flags) \ ({ \