Don't trigger sanitizer initialization from `sysctlbyname` and `sysctl` interceptor.
Summary:
This fixes the `ThreadSanitizer-x86_64-iossim` testsuite which broke
when r348770 (https://reviews.llvm.org/D55473) landed.
The root cause of the problem is that early-on during the iOS simulator
init process a call to `sysctlbyname` is issued. If the TSan initializer
is triggered at this point it will eventually trigger a call to
`__cxa_at_exit(...)`. This call then aborts because the library
implementing this function is not yet had its initialization function
called.
rdar://problem/46696934
Reviewers: kubamracek, george.karpenkov, devnexen, vitalybuka, krytarowski
Subscribers: #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D55711
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@349402 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/sanitizer_common/sanitizer_common_interceptors.inc b/lib/sanitizer_common/sanitizer_common_interceptors.inc
index 09fd17e..37743a0 100644
--- a/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -7539,6 +7539,8 @@
INTERCEPTOR(int, sysctl, int *name, unsigned int namelen, void *oldp,
SIZE_T *oldlenp, void *newp, SIZE_T newlen) {
void *ctx;
+ if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
+ return internal_sysctl(name, namelen, oldp, oldlenp, newp, newlen);
COMMON_INTERCEPTOR_ENTER(ctx, sysctl, name, namelen, oldp, oldlenp, newp,
newlen);
if (name)
@@ -7561,6 +7563,8 @@
INTERCEPTOR(int, sysctlbyname, char *sname, void *oldp, SIZE_T *oldlenp,
void *newp, SIZE_T newlen) {
void *ctx;
+ if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
+ return internal_sysctlbyname(sname, oldp, oldlenp, newp, newlen);
COMMON_INTERCEPTOR_ENTER(ctx, sysctlbyname, sname, oldp, oldlenp, newp,
newlen);
if (sname)
