forked from OSchip/llvm-project
b7b5ac60c4
In short, CVE-2016-2143 will crash the machine if a process uses both >4TB virtual addresses and fork(). ASan, TSan, and MSan will, by necessity, map a sizable chunk of virtual address space, which is much larger than 4TB. Even worse, sanitizers will always use fork() for llvm-symbolizer when a bug is detected. Disable all three by aborting on process initialization if the running kernel version is not known to contain a fix. Unfortunately, there's no reliable way to detect the fix without crashing the kernel. So, we rely on whitelisting - I've included a list of upstream kernel versions that will work. In case someone uses a distribution kernel or applied the fix themselves, an override switch is also included. Differential Revision: http://reviews.llvm.org/D19576 llvm-svn: 267747 |
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| .. | ||
| scripts | ||
| .clang-format | ||
| CMakeLists.txt | ||
| dfsan.cc | ||
| dfsan.h | ||
| dfsan.syms.extra | ||
| dfsan_custom.cc | ||
| dfsan_flags.inc | ||
| dfsan_interceptors.cc | ||
| dfsan_platform.h | ||
| done_abilist.txt | ||
| libc_ubuntu1404_abilist.txt | ||