[Bug 1763591] [NEW] dlmopen glib2.0 crashed in g_variant_lookup_value

[bin]

Public bug reported:

when dlmopen glib2.0 and the program is linked with pthread, glib2.0 crashed in g_variant_lookup_value when dlmopen with 
LM_ID_NEWLM

following is the poc:

#define _GNU_SOURCE
#include <dlfcn.h>
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>


int main(int argc, char*argv[])
{
  char buf[4096] = {0};
  pthread_attr_t attr;

  pthread_attr_init(&attr);
  snprintf(buf, sizeof(buf), "/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2");
  dlmopen(-1, buf, RTLD_NOW|RTLD_LOCAL);
  return 0;
}

** Affects: glib2.0 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1763591

Title:
  dlmopen glib2.0 crashed in g_variant_lookup_value

Status in glib2.0 package in Ubuntu:
  New

Bug description:
  when dlmopen glib2.0 and the program is linked with pthread, glib2.0 crashed in g_variant_lookup_value when dlmopen with 
  LM_ID_NEWLM

  following is the poc:

  #define _GNU_SOURCE
  #include <dlfcn.h>
  #include <pthread.h>
  #include <stdlib.h>
  #include <stdio.h>

  
  int main(int argc, char*argv[])
  {
    char buf[4096] = {0};
    pthread_attr_t attr;

    pthread_attr_init(&attr);
    snprintf(buf, sizeof(buf), "/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2");
    dlmopen(-1, buf, RTLD_NOW|RTLD_LOCAL);
    return 0;
  }

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