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Merge pull request #2288 from xiaobo55x:fork_test

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PiperOrigin-RevId: 306306494
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gVisor bot
2020-04-13 14:13:28 -07:00
parent 7ec2397235 35e6b6bf1a
commit 3f4e826fb3
1 changed files with 15 additions and 2 deletions
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test/syscalls/linux/fork.cc
+15 -2
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@@ -431,7 +431,6 @@ TEST(CloneTest, NewUserNamespacePermitsAllOtherNamespaces) {
<< "status = " << status;
}
#ifdef __x86_64__
// Clone with CLONE_SETTLS and a non-canonical TLS address is rejected.
TEST(CloneTest, NonCanonicalTLS) {
constexpr uintptr_t kNonCanonical = 1ull << 48;
@@ -440,11 +439,25 @@ TEST(CloneTest, NonCanonicalTLS) {
// on this.
char stack;
// The raw system call interface on x86-64 is:
// long clone(unsigned long flags, void *stack,
// int *parent_tid, int *child_tid,
// unsigned long tls);
//
// While on arm64, the order of the last two arguments is reversed:
// long clone(unsigned long flags, void *stack,
// int *parent_tid, unsigned long tls,
// int *child_tid);
#if defined(__x86_64__)
EXPECT_THAT(syscall(__NR_clone, SIGCHLD | CLONE_SETTLS, &stack, nullptr,
nullptr, kNonCanonical),
SyscallFailsWithErrno(EPERM));
}
#elif defined(__aarch64__)
EXPECT_THAT(syscall(__NR_clone, SIGCHLD | CLONE_SETTLS, &stack, nullptr,
kNonCanonical, nullptr),
SyscallFailsWithErrno(EPERM));
#endif
}
} // namespace
} // namespace testing