valgrind/SOURCES/valgrind-3.17.0-clone-parent-res.patch
2021-10-08 17:30:59 +00:00

22 lines
746 B
Diff

commit e08a82991a9b9dc87c13f2b89273f25f97d14baf
Author: Tom Hughes <tom@compton.nu>
Date: Tue Apr 6 22:44:36 2021 +0100
Only process clone results in the parent thread
Fixes BZ#423963
diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index 5ae4e6613..c59d8ee26 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -940,7 +940,7 @@ PRE(sys_clone)
("Valgrind does not support general clone().");
}
- if (SUCCESS) {
+ if (SUCCESS && RES != 0) {
if (ARG_FLAGS & (VKI_CLONE_PARENT_SETTID | VKI_CLONE_PIDFD))
POST_MEM_WRITE(ARG3, sizeof(Int));
if (ARG_FLAGS & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID))