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Author SHA1 Message Date
Ulrich Weigand 66f2260837 [sanitizer] [SystemZ] Update CVE-2016-2143 check for Ubuntu 16.04 
The Ubuntu 16.04 kernel contains a backport of the CVE check
starting with version 4.4.0-13.  Update FixedCVE_2016_2143.

llvm-svn: 303757
 2017-05-24 15:06:33 +00:00
Kostya Serebryany 4b3ea2d776 s390 CVE-2016-2143 whitelist for RHEL kernels 
Summary: This patch adds whitelist for RHEL6 and RHEL7 kernels that are known to have the CVE fixed.

Reviewers: koriakin, kcc

Reviewed By: kcc

Subscribers: kubamracek

Differential Revision: https://reviews.llvm.org/D29825

llvm-svn: 294799
 2017-02-10 22:50:44 +00:00
Marcin Koscielnicki 14824b1c52 [sanitizers] [SystemZ] Mark kernel 3.12.58+ as safe from CVE-2016-2143. 
llvm-svn: 268046
 2016-04-29 14:59:19 +00:00
Marcin Koscielnicki b7b5ac60c4 [sanitizer] [SystemZ] Abort if the kernel might be vulnerable to CVE-2016-2143. 
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
 2016-04-27 17:42:00 +00:00
Marcin Koscielnicki f98076b6a1 [sanitizer] [SystemZ] Implement internal_clone. 
Differential Revision: http://reviews.llvm.org/D19159

llvm-svn: 267547
 2016-04-26 10:41:19 +00:00
Marcin Koscielnicki 604d873aa1 [sanitizers] [SystemZ] Introduce sanitizer_linux_s390.cc. 
This file will contain s390-specific code.  For now, let's move the s390
version of internal_mmap here.

Differential Revision: http://reviews.llvm.org/D19174

llvm-svn: 266482
 2016-04-15 22:11:10 +00:00