Kernel: Make sure we free the thread stack on thread exit

This adds two new arguments to the thread_exit system call which let a thread unmap an arbitrary VM range on thread exit. LibPthread uses this functionality to unmap the thread stack. Fixes #7267.
Author: https://github.com/gunnarbeutner Commit: 42d667645d Pull-request: https://github.com/SerenityOS/serenity/pull/7518 Issue: https://github.com/SerenityOS/serenity/issues/7267 Reviewed-by: https://github.com/bgianfo
2025-06-13 22:01:53 +00:00 · 2021-05-28 11:20:22 +02:00 · 2021-05-28 11:20:22 +02:00 · 42d667645d · 2024-07-18 17:13:15 +09:00
commit 42d667645d
parent 95c2166ca9
4 changed files with 22 additions and 9 deletions
--- a/Kernel/Syscall.cpp
+++ b/Kernel/Syscall.cpp
@ -97,7 +97,7 @@ KResultOr<FlatPtr> handle(RegisterState& regs, FlatPtr function, FlatPtr arg1, F
            process.sys$exit(arg1);
            break;
        case SC_exit_thread:
-            process.sys$exit_thread(arg1);
+            process.sys$exit_thread(arg1, arg2, arg3);
            break;
        default:
            VERIFY_NOT_REACHED();