From 0f8db9fa2891ce22ad0292bdfac07a3fe26ebb66 Mon Sep 17 00:00:00 2001
From: Jamie Liu <jamieliu@google.com>
Date: Fri, 20 Dec 2024 13:35:12 -0800
Subject: [PATCH] Deflake process_vm_read_write test.

Passing an uninitialized iovec can cause process_vm_readv/writev to fail for
reasons other than the intended one.

PiperOrigin-RevId: 708414541
---
 test/syscalls/linux/process_vm_read_write.cc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/test/syscalls/linux/process_vm_read_write.cc b/test/syscalls/linux/process_vm_read_write.cc
index 3d482a6e2..9cee80df5 100644
--- a/test/syscalls/linux/process_vm_read_write.cc
+++ b/test/syscalls/linux/process_vm_read_write.cc
@@ -350,11 +350,15 @@ TEST(ProcessVMInvalidTest, NULLRemoteIovec) {
 }
 
 TEST(ProcessVMInvalidTest, ProcessNoExist) {
+  std::string contents = "3263827";
   struct iovec iov;
+  iov.iov_base = contents.data();
+  iov.iov_len = contents.size();
+
   EXPECT_THAT(process_vm_readv(-1, &iov, 1, &iov, 1, 0),
-              SyscallFailsWithErrno(::testing::AnyOf(ESRCH, EFAULT)));
+              SyscallFailsWithErrno(ESRCH));
   EXPECT_THAT(process_vm_writev(-1, &iov, 1, &iov, 1, 0),
-              SyscallFailsWithErrno(::testing::AnyOf(ESRCH, EFAULT)));
+              SyscallFailsWithErrno(ESRCH));
 }
 
 TEST(ProcessVMInvalidTest, GreaterThanIOV_MAX) {