diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 048c2dd..f43d3a5 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2019-11-06  Christian Biesinger  <cbiesinger@google.com>
+
+	* linux-tdep.c (linux_info_proc): Use strtok_r instead of strtok.
+	* mi/mi-main.c (output_cores): Likewise.
+	* nat/linux-osdata.c (linux_xfer_osdata_cpus): Likewise.
+	(linux_xfer_osdata_modules): Likewise.
+	* remote.c (register_remote_support_xml): Likewise.
+	* sparc64-tdep.c (adi_is_addr_mapped): Likewise.
+	* xml-syscall.c (syscall_create_syscall_desc): Likewise.
+
 2019-11-06  Tom Tromey  <tom@tromey.com>
 
 	* tui/tui-interp.c: Don't include readline.h.
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 35684db..9d0afaa 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,13 @@
+2019-11-06  Christian Biesinger  <cbiesinger@google.com>
+
+	* linux-tdep.c (linux_info_proc): Use strtok_r instead of strtok.
+	* mi/mi-main.c (output_cores): Likewise.
+	* nat/linux-osdata.c (linux_xfer_osdata_cpus): Likewise.
+	(linux_xfer_osdata_modules): Likewise.
+	* remote.c (register_remote_support_xml): Likewise.
+	* sparc64-tdep.c (adi_is_addr_mapped): Likewise.
+	* xml-syscall.c (syscall_create_syscall_desc): Likewise.
+
 2019-11-01  Christian Biesinger  <cbiesinger@google.com>
 
 	* configure: Regenerate.
diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c
index cafff6b..54bd2a2 100644
--- a/gdb/gdbserver/linux-x86-low.c
+++ b/gdb/gdbserver/linux-x86-low.c
@@ -912,9 +912,11 @@
       if (startswith (feature, "xmlRegisters="))
 	{
 	  char *copy = xstrdup (feature + 13);
-	  char *p;
 
-	  for (p = strtok (copy, ","); p != NULL; p = strtok (NULL, ","))
+	  char *saveptr;
+	  for (char *p = strtok_r (copy, ",", &saveptr);
+	       p != NULL;
+	       p = strtok_r (NULL, ",", &saveptr))
 	    {
 	      if (strcmp (p, "i386") == 0)
 		{
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index 59e8a55..c5f7176 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -2268,9 +2268,10 @@
 
 	  /* Two passes, to avoid nested strtok calls in
 	     target_process_qsupported.  */
-	  for (p = strtok (p + 1, ";");
+	  char *saveptr;
+	  for (p = strtok_r (p + 1, ";", &saveptr);
 	       p != NULL;
-	       p = strtok (NULL, ";"))
+	       p = strtok_r (NULL, ";", &saveptr))
 	    {
 	      count++;
 	      qsupported = XRESIZEVEC (char *, qsupported, count);
@@ -3633,12 +3634,11 @@
 	}
       else if (startswith (*next_arg, "--disable-packet="))
 	{
-	  char *packets, *tok;
-
-	  packets = *next_arg += sizeof ("--disable-packet=") - 1;
-	  for (tok = strtok (packets, ",");
+	  char *packets = *next_arg += sizeof ("--disable-packet=") - 1;
+	  char *saveptr;
+	  for (char *tok = strtok_r (packets, ",", &saveptr);
 	       tok != NULL;
-	       tok = strtok (NULL, ","))
+	       tok = strtok_r (NULL, ",", &saveptr))
 	    {
 	      if (strcmp ("vCont", tok) == 0)
 		disable_packet_vCont = true;
diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index 567b01c..18cee91 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -839,9 +839,10 @@
 			   "      Size", "    Offset", "objfile");
 	    }
 
-	  for (line = strtok (map.get (), "\n");
+	  char *saveptr;
+	  for (line = strtok_r (map.get (), "\n", &saveptr);
 	       line;
-	       line = strtok (NULL, "\n"))
+	       line = strtok_r (NULL, "\n", &saveptr))
 	    {
 	      ULONGEST addr, endaddr, offset, inode;
 	      const char *permissions, *device, *mapping_filename;
diff --git a/gdb/mi/mi-main.c b/gdb/mi/mi-main.c
index 0e99fa3..c14897a 100644
--- a/gdb/mi/mi-main.c
+++ b/gdb/mi/mi-main.c
@@ -696,8 +696,9 @@
   ui_out_emit_list list_emitter (uiout, field_name);
   auto cores = make_unique_xstrdup (xcores);
   char *p = cores.get ();
+  char *saveptr;
 
-  for (p = strtok (p, ","); p;  p = strtok (NULL, ","))
+  for (p = strtok_r (p, ",", &saveptr); p;  p = strtok_r (NULL, ",", &saveptr))
     uiout->field_string (NULL, p);
 }
 
diff --git a/gdb/nat/linux-osdata.c b/gdb/nat/linux-osdata.c
index 67f9f3a..84357e2 100644
--- a/gdb/nat/linux-osdata.c
+++ b/gdb/nat/linux-osdata.c
@@ -566,11 +566,12 @@
 	      char *key, *value;
 	      int i = 0;
 
-	      key = strtok (buf, ":");
+	      char *saveptr;
+	      key = strtok_r (buf, ":", &saveptr);
 	      if (key == NULL)
 		continue;
 
-	      value = strtok (NULL, ":");
+	      value = strtok_r (NULL, ":", &saveptr);
 	      if (value == NULL)
 		continue;
 
@@ -1216,36 +1217,36 @@
 	{
 	  if (fgets (buf, sizeof (buf), fp.get ()))
 	    {
-	      char *name, *dependencies, *status, *tmp;
+	      char *name, *dependencies, *status, *tmp, *saveptr;
 	      unsigned int size;
 	      unsigned long long address;
 	      int uses;
 
-	      name = strtok (buf, " ");
+	      name = strtok_r (buf, " ", &saveptr);
 	      if (name == NULL)
 		continue;
 
-	      tmp = strtok (NULL, " ");
+	      tmp = strtok_r (NULL, " ", &saveptr);
 	      if (tmp == NULL)
 		continue;
 	      if (sscanf (tmp, "%u", &size) != 1)
 		continue;
 
-	      tmp = strtok (NULL, " ");
+	      tmp = strtok_r (NULL, " ", &saveptr);
 	      if (tmp == NULL)
 		continue;
 	      if (sscanf (tmp, "%d", &uses) != 1)
 		continue;
 
-	      dependencies = strtok (NULL, " ");
+	      dependencies = strtok_r (NULL, " ", &saveptr);
 	      if (dependencies == NULL)
 		continue;
 
-	      status = strtok (NULL, " ");
+	      status = strtok_r (NULL, " ", &saveptr);
 	      if (status == NULL)
 		continue;
 
-	      tmp = strtok (NULL, "\n");
+	      tmp = strtok_r (NULL, "\n", &saveptr);
 	      if (tmp == NULL)
 		continue;
 	      if (sscanf (tmp, "%llx", &address) != 1)
diff --git a/gdb/remote.c b/gdb/remote.c
index 8ea52d3..1ac9013 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -5169,7 +5169,8 @@
   else
     {
       char *copy = xstrdup (remote_support_xml + 13);
-      char *p = strtok (copy, ",");
+      char *saveptr;
+      char *p = strtok_r (copy, ",", &saveptr);
 
       do
 	{
@@ -5180,7 +5181,7 @@
 	      return;
 	    }
 	}
-      while ((p = strtok (NULL, ",")) != NULL);
+      while ((p = strtok_r (NULL, ",", &saveptr)) != NULL);
       xfree (copy);
 
       remote_support_xml = reconcat (remote_support_xml,
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c
index 873fbaa..fc73b23 100644
--- a/gdb/sparc64-tdep.c
+++ b/gdb/sparc64-tdep.c
@@ -316,8 +316,10 @@
   if (data)
     {
       adi_stat_t adi_stat = get_adi_info (pid);
-      char *line;
-      for (line = strtok (data.get (), "\n"); line; line = strtok (NULL, "\n"))
+      char *saveptr;
+      for (char *line = strtok_r (data.get (), "\n", &saveptr);
+	   line;
+	   line = strtok_r (NULL, "\n", &saveptr))
         {
           ULONGEST addr, endaddr;
 
diff --git a/gdb/xml-syscall.c b/gdb/xml-syscall.c
index dc988df..3830faa 100644
--- a/gdb/xml-syscall.c
+++ b/gdb/xml-syscall.c
@@ -221,9 +221,10 @@
   /*  Add syscall to its groups.  */
   if (groups != NULL)
     {
-      for (char *group = strtok (groups, ",");
+      char *saveptr;
+      for (char *group = strtok_r (groups, ",", &saveptr);
 	   group != NULL;
-	   group = strtok (NULL, ","))
+	   group = strtok_r (NULL, ",", &saveptr))
 	syscall_group_add_syscall (syscalls_info, sysdesc, group);
     }
 }
