Always search TIDs for the crashing processes.

base/linux_util.cc

Index: base/linux_util.cc
===================================================================
--- base/linux_util.cc	(revision 88621)
+++ base/linux_util.cc	(working copy)
@@ -252,7 +252,8 @@
   return already_found;
 }
 
-pid_t FindThreadIDWithSyscall(pid_t pid, const std::string& expected_data) {
+pid_t FindThreadIDWithSyscall(pid_t pid, const std::string& expected_data,
+                              bool* syscall_supported) {
   char buf[256];
   snprintf(buf, sizeof(buf), "/proc/%d/task", pid);
   DIR* task = opendir(buf);
@@ -273,6 +274,7 @@
   closedir(task);
 
   scoped_array<char> syscall_data(new char[expected_data.length()]);
+  *syscall_supported = false;
   for (std::vector<pid_t>::const_iterator
        i = tids.begin(); i != tids.end(); ++i) {
     const pid_t current_tid = *i;
@@ -280,6 +282,7 @@
     int fd = open(buf, O_RDONLY);
     if (fd < 0)
       continue;
+    *syscall_supported = true;
     bool read_ret =
         file_util::ReadFromFD(fd, syscall_data.get(), expected_data.length());
     close(fd);