arch/x64: Fix crash issue after enabling KASAN

After up_fork calls the x86_64_fork function, the rsp must be 16-byte aligned; otherwise, the movaps %xmm0, (%rsp) instruction may cause a crash. Signed-off-by: liwenxiang1 <liwenxiang1@xiaomi.com>
2026-05-18 00:34:10 +08:00 · 2025-07-18 15:06:54 +08:00
parent 0dc0b94380
commit f730a86d22
1 changed files with 4 additions and 0 deletions
@@ -118,10 +118,14 @@ up_fork:
    pushq   %r12
    movq    %rsp, %rdi

+    subq    $8, %rsp
+
    /* call function */

    callq x86_64_fork

+    addq    $8, %rsp
+
    /* Do not modify return value %rax */
    /* Restore non-volatile registers */