[PATCH] D33784: Bug 33206 - Sanitizer CHECK failed: ((allocated_for_dlsym)) < ((kDlsymAllocPoolSize)) (1036, 1024)) with preload

[Maxim Ostapenko via Phabricator via llvm-commits]

m.ostapenko added a comment.

Please add a testcase. For me, following commands work:
$ cat foo.c

  #include <stdlib.h>
  
  __attribute__((constructor)) void foo() {
    void *p = malloc(1 << 20);
    p = malloc(1 << 20);
  }

$ cat bar.c

  #include <stdlib.h>
  
  __attribute__((constructor)) void bar() {
    void *p = malloc(1 << 20);
    p = malloc(1 << 20);
  }

$ cat main.c

  int main() {
    return 0;
  }

$ clang -shared -fPIC bar.c -o libbar.so
$ clang -shared -fPIC foo.c -o libfoo.so ./libbar.so
$ clang main.c -o main ./libfoo.so
$ LD_PRELOAD=/usr/local/lib/clang/5.0.0/lib/linux/libclang_rt.asan-x86_64.so ./main

  ==13629==Sanitizer CHECK failed: /home/max/src/llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:42 ((allocated_for_dlsym)) < ((kDlsymAllocPoolSize)) (131072, 1024)


https://reviews.llvm.org/D33784