Index: lib/sanitizer_common/sanitizer_common_interceptors.inc
===================================================================
--- lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -4272,11 +4272,16 @@
 INTERCEPTOR(int, fstatvfs, int fd, void *buf) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf);
+  COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
   // FIXME: under ASan the call below may write to freed memory and corrupt
   // its metadata. See
   // https://github.com/google/sanitizers/issues/321.
   int res = REAL(fstatvfs)(fd, buf);
-  if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
+  if (!res) {
+    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
+    if (fd >= 0)
+      COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
+  }
   return res;
 }
 #define INIT_STATVFS                  \
@@ -7348,6 +7353,34 @@
 #define INIT_SETVBUF
 #endif
 
+#if SANITIZER_INTERCEPT_STATVFS1
+INTERCEPTOR(int, statvfs1, const char *path, void *buf, int flags) {
+  void *ctx;
+  COMMON_INTERCEPTOR_ENTER(ctx, statvfs1, path, buf, flags);
+  if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
+  int res = REAL(statvfs1)(path, buf, flags);
+  if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
+  return res;
+}
+INTERCEPTOR(int, fstatvfs1, int fd, void *buf, int flags) {
+  void *ctx;
+  COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs1, fd, buf, flags);
+  COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
+  int res = REAL(fstatvfs1)(fd, buf, flags);
+  if (!res) {
+    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
+    if (fd >= 0)
+      COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
+  }
+  return res;
+}
+#define INIT_STATVFS1                  \
+  COMMON_INTERCEPT_FUNCTION(statvfs1);  \
+  COMMON_INTERCEPT_FUNCTION(fstatvfs1);
+#else
+#define INIT_STATVFS1
+#endif
+
 static void InitializeCommonInterceptors() {
   static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
   interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
@@ -7604,6 +7637,7 @@
   INIT_GETMNTINFO;
   INIT_MI_VECTOR_HASH;
   INIT_SETVBUF;
+  INIT_STATVFS1;
 
   INIT___PRINTF_CHK;
 }
Index: lib/sanitizer_common/sanitizer_platform_interceptors.h
===================================================================
--- lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -520,5 +520,6 @@
   SI_LINUX || SI_MAC)
 #define SANITIZER_INTERCEPT_GETMNTINFO SI_NETBSD
 #define SANITIZER_INTERCEPT_MI_VECTOR_HASH SI_NETBSD
+#define SANITIZER_INTERCEPT_STATVFS1 SI_NETBSD
 
 #endif  // #ifndef SANITIZER_PLATFORM_INTERCEPTORS_H
Index: test/sanitizer_common/TestCases/NetBSD/statvfs1.cc
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/NetBSD/statvfs1.cc
@@ -0,0 +1,61 @@
+// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck %s
+
+#include <sys/param.h>
+#include <sys/types.h>
+
+#include <sys/statvfs.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+void test1() {
+  struct statvfs buf;
+
+  printf("statvfs1\n");
+
+  if (statvfs1("/etc/fstab", &buf, ST_WAIT) == -1)
+    err(EXIT_FAILURE, "statvfs1");
+  printf("fstypename='%s'\n", buf.f_fstypename);
+  printf("mntonname='%s'\n", buf.f_mntonname);
+  printf("mntfromname='%s'\n", buf.f_mntfromname);
+}
+
+void test2() {
+  int fd;
+  struct statvfs buf;
+
+  printf("fstatvfs1\n");
+
+  fd = open("/etc/fstab", O_RDONLY);
+  if (fd == -1)
+    err(EXIT_FAILURE, "open");
+
+  if (fstatvfs1(fd, &buf, ST_WAIT) == -1)
+    err(EXIT_FAILURE, "statvfs1");
+
+  printf("fstypename='%s'\n", buf.f_fstypename);
+  printf("mntonname='%s'\n", buf.f_mntonname);
+  printf("mntfromname='%s'\n", buf.f_mntfromname);
+
+  if (close(fd) == -1)
+    err(EXIT_FAILURE, "close");
+}
+
+int main(void) {
+  test1();
+  test2();
+
+  // CHECK: statvfs1
+  // CHECK: fstypename='{{.*}}'
+  // CHECK: mntonname='{{.*}}'
+  // CHECK: mntfromname='{{.*}}'
+  // CHECK: fstatvfs1
+  // CHECK: fstypename='{{.*}}'
+  // CHECK: mntonname='{{.*}}'
+  // CHECK: mntfromname='{{.*}}'
+
+  return 0;
+}