riscv will need an implementation for exit_thread to clean up shadow stack when thread exits. If current thread had shadow stack enabled, shadow stack is allocated by default for any new thread.
Signed-off-by: Deepak Gupta debug@rivosinc.com --- arch/riscv/Kconfig | 1 + arch/riscv/kernel/process.c | 5 +++++ 2 files changed, 6 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index e3142ce531a0..7e0b2bcc388f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -149,6 +149,7 @@ config RISCV select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS + select HAVE_EXIT_THREAD select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select IRQ_DOMAIN select IRQ_FORCED_THREADING diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 9a85c9d4c902..d864eef5a10d 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -195,6 +195,11 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) return 0; }
+void exit_thread(struct task_struct *tsk) +{ + return; +} + int copy_thread(struct task_struct *p, const struct kernel_clone_args *args) { unsigned long clone_flags = args->flags;