[PATCH] D34243: [Sanitizers] Secondary allocator respects allocator_may_return_null=1.

[Ulrich Weigand via Phabricator via llvm-commits]

uweigand added a comment.

The new test case fails on SystemZ, making all our build bots red.

The problem seems to be that the size of the shadow areas is bigger on SystemZ, which means after the ulimit -v, already the ASAN initialization fails since it can no longer allocate the shadow area:

  ==63256==ERROR: AddressSanitizer failed to allocate 0x2000000001000 (562949953425408) bytes at address ffffffffff000 (errno: 12)
  ==63256==ReserveShadowMemoryRange failed while trying to map 0x2000000001000 bytes. Perhaps you're using ulimit -v
  
  Program received signal SIGABRT, Aborted.
  0x000003fffd83d4f8 in __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
  54        return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
  (gdb) bt
  #0  0x000003fffd83d4f8 in __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
  #1  0x000003fffd83edee in __GI_abort () at abort.c:89
  #2  0x0000000001104d8a in __sanitizer::Abort () at /home/uweigand/llvm/llvm-head/projects/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cc:146
  #3  0x00000000010e2918 in __asan::ReserveShadowMemoryRange (beg=4503599627366400, end=<optimized out>, name=0x1114c72 "low shadow")
      at /home/uweigand/llvm/llvm-head/projects/compiler-rt/lib/asan/asan_rtl.cc:99
  #4  0x00000000010e5302 in __asan::InitializeShadowMemory () at /home/uweigand/llvm/llvm-head/projects/compiler-rt/lib/asan/asan_rtl.cc:472
  #5  __asan::AsanInitInternal () at /home/uweigand/llvm/llvm-head/projects/compiler-rt/lib/asan/asan_rtl.cc:555
  #6  0x000003fffdf91a44 in _dl_init (main_map=0x3fffdfa70d8, argc=<optimized out>, argv=0x3fffffff2c8, env=0x3fffffff2d8) at dl-init.c:105
  #7  0x000003fffdf80fbc in _dl_start_user () from /lib/ld64.so.1


Repository:
  rL LLVM

https://reviews.llvm.org/D34243