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81 Commits

Author SHA1 Message Date
Peter Collingbourne 0c8df4e1d8 [nolibc] Move libc-dependent sanitizer_linux.cc code to sanitizer_linux_libcdep.cc. 
llvm-svn: 182292
 2013-05-20 15:57:44 +00:00
Peter Collingbourne d5169edc36 [nolibc] Make GetArgsAndEnv libc-independent. 
__libc_stack_end is made into a weak symbol if possible.  If libc is
not linked, read args and environment from /proc.

llvm-svn: 182276
 2013-05-20 14:25:32 +00:00
Sergey Matveev af05543c86 [sanitizer] LibraryNameIs in sanitizer_linux 
llvm-svn: 181787
 2013-05-14 13:24:46 +00:00
Peter Collingbourne 6f4be19b57 [nolibc] Change internal syscall API to remove reliance on libc's errno. 
This change moves to a model where the error value of a system call is
potentially contained in the return value itself rather than being
implicit in errno.  The helper function internal_iserror can be used
to extract the error value from a return value.  On platforms other
than Linux/x86_64 this still uses errno, but other platforms are free
to port their error handling to this new model.

Differential Revision: http://llvm-reviews.chandlerc.com/D756

llvm-svn: 181436
 2013-05-08 14:43:49 +00:00
Sergey Matveev 3704453368 [sanitizer] Fixed InitTlsSize for Android. 
llvm-svn: 181330
 2013-05-07 16:29:26 +00:00
Sergey Matveev 88d0c664ef [sanitizer] Fixed includes in sanitizer_linux.cc for Android. 
llvm-svn: 181327
 2013-05-07 15:38:53 +00:00
Sergey Matveev 954c6ef10f [sanitizer] Move GetThreadStackAndTls from TSan to sanitizer_common. 
Move this function to sanitizer_common because LSan uses it too. Also, fix a bug
where the TLS range reported for main thread was off by the size of the thread
descriptor from libc (TSan doesn't care much, but for LSan it's critical).

llvm-svn: 181322
 2013-05-07 14:41:43 +00:00
Evgeniy Stepanov 517118e6b4 [sanitizer] Sanitizer __internal_*stat interface. 
With this change, __internal_*stat always expect a "struct stat *" argument.
This avoids stat/stat64 caller-side confusion (sanitizer_common tests already
made this mistake), and allows the use of __internal_fstat() as a drop-in
replacement for libc's fstat().

llvm-svn: 181311
 2013-05-07 12:47:04 +00:00
Sergey Matveev b2151b8200 Revert r180599 "[sanitizer] Clear LD_PRELOAD when forking an external symbolizer." 
llvm-svn: 180602
 2013-04-26 13:01:40 +00:00
Sergey Matveev 3c8fbe1013 [sanitizer] Clear LD_PRELOAD when forking an external symbolizer. 
llvm-svn: 180599
 2013-04-26 11:35:05 +00:00
Alexey Samsonov f36c5a8431 Revert r180082 and add a test for SetEnv function 
llvm-svn: 180098
 2013-04-23 12:49:12 +00:00
Alexey Samsonov e7540e3561 [Sanitizer] Delete unused function 
llvm-svn: 180082
 2013-04-23 08:18:09 +00:00
Alexey Samsonov 46b8665ea4 Remove InternalAlloc/InternalFree calls from StopTheWorld. Patch by Sergey Matveev. 
llvm-svn: 178855
 2013-04-05 07:41:21 +00:00
Alexey Samsonov a0e28a7aaa [Sanitizer] Kill the remainders of platform defines in favor of SANITIZER_ defines 
llvm-svn: 178627
 2013-04-03 07:24:35 +00:00
Alexander Potapenko f8109dd0f8 [libsanitizer] Unmapping the old cache partially invalidates the memory layout, so add 
a flag to skip cache update for cases when that's unacceptable (e.g. lsan).

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 178000
 2013-03-26 10:34:37 +00:00
Dmitry Vyukov 510ad11800 tsan: add SetEnv() function that can be used in frontends 
llvm-svn: 177857
 2013-03-25 09:56:45 +00:00
Dmitry Vyukov 78693730a4 tsan: use a single background thread for memory profiler and memory flush (and later for symbolizer flush) 
llvm-svn: 177627
 2013-03-21 06:24:31 +00:00
Dmitry Vyukov b6eace8a2f tsan: add internal_unlink() function 
llvm-svn: 177510
 2013-03-20 10:28:36 +00:00
Evgeniy Stepanov 0af672326a [sanitizer] Replace more platform checks with SANITIZER_ constants. 
llvm-svn: 177400
 2013-03-19 14:33:38 +00:00
Evgeniy Stepanov 6d02c1c598 [sanitizer] Avoid use of uintptr_t. 
llvm-svn: 177384
 2013-03-19 09:39:15 +00:00
Evgeniy Stepanov b4a218db34 [sanitizer] Don't adjust the size of the user-allocated stack. 
Moved this code to sanitizer_common.

llvm-svn: 177383
 2013-03-19 09:30:52 +00:00
Alexey Samsonov a097f7b1e3 [Sanitizer] Add default constructor for BlockingMutex 
llvm-svn: 177072
 2013-03-14 13:30:56 +00:00
Evgeniy Stepanov 5697b58ec4 [sanitizer] Move GetTlsSize code from TSan to sanitizer_common. 
llvm-svn: 176938
 2013-03-13 08:19:53 +00:00
Alexey Samsonov d38aceda4e [Sanitizer] Fix a typo in function name 
llvm-svn: 176932
 2013-03-13 06:55:02 +00:00
Alexey Samsonov 06d3aa4884 [Sanitizer] Change MemoryMappingLayout methods to also report memory protection flags (for future use in leak checker). Patch by Sergey Matveev. 
llvm-svn: 176931
 2013-03-13 06:51:02 +00:00
Alexey Samsonov db7d9656bb [Sanitizer] Implement BlockingMutex::CheckLocked() 
llvm-svn: 176805
 2013-03-11 15:45:20 +00:00
Alexey Samsonov 49b86b354a [Sanitizer] don't include missing header on Android 
llvm-svn: 176183
 2013-02-27 13:03:35 +00:00
Kostya Serebryany f0b8f989e9 add Linux syscall wrappers and ThreadLister to sanitizer_common 
ThreadLister is a Linux-specific class for obtaining the thread IDs of a process from procfs (/proc/<pid>/task/). It will be used by leak checking code.
Also add several syscall wrappers which will be required by the same code that uses ThreadLister, but are not used in ThreadLister itself.
Patch by Sergey Matveev

llvm-svn: 176179
 2013-02-27 11:22:40 +00:00
Alexey Samsonov aadd1f2ad6 [Sanitizer] use raw syscall instead of _exit() function on Linux 
llvm-svn: 175622
 2013-02-20 13:54:32 +00:00
Evgeniy Stepanov adaca58526 [msan] Fix ReExec on linux. 
execle(argv[0], ...) is wrong, because argv[0] may contain a PATH-resolvable
program name. Execute /proc/self/exe instead.

llvm-svn: 175504
 2013-02-19 11:09:29 +00:00
Evgeniy Stepanov 2a25bfe06a [sanitizer] Get full argv and envp on glibc. 
/proc/$PID/cmdline is clipped to 4Kb.
Locate argv and envp on the main thread stack.

llvm-svn: 175163
 2013-02-14 14:40:03 +00:00
Evgeniy Stepanov 763b2981b4 [sanitizer] Raise argv limit for ReExec. 
We are still limited by /proc/*/cmdline size (4Kb max on Linux!).

llvm-svn: 175145
 2013-02-14 08:22:06 +00:00
Alexey Samsonov 2c5cbd2b38 [Sanitizer] extend internal libc with stat/fstat/lstat functions 
llvm-svn: 174316
 2013-02-04 10:16:50 +00:00
Alexey Samsonov 4985b8766e [Sanitizer] use u32 instead of mode_t, which is defined in Darwin headers 
llvm-svn: 174189
 2013-02-01 16:32:18 +00:00
Alexey Samsonov 39313b780d [Sanitizer] make internal_open have the same interface as libc version 
llvm-svn: 174187
 2013-02-01 15:58:46 +00:00
Dmitry Vyukov 00e0236665 asan/tsan: manually define FUTEX constants, because <linux/futes.h> header is broken on some linux distributions 
llvm-svn: 173933
 2013-01-30 14:39:27 +00:00
Peter Collingbourne 6600516a58 Have ReExec read environment from /proc/self/environ 
It is possible for ReExec to be called before the C standard library
has initialised itself sufficiently for execv to work properly.
Fix this by parsing the environment ourselves and using execve.

Differential Revision: http://llvm-reviews.chandlerc.com/D304

llvm-svn: 172748
 2013-01-17 19:50:42 +00:00
Kostya Serebryany c4bb752e3b [sanitizer] hide PR_SET_NAME under an ifdef (for older kernels) 
llvm-svn: 172523
 2013-01-15 09:03:23 +00:00
Dmitry Vyukov 064c739cea asan: fix Android build 
llvm-svn: 172389
 2013-01-14 08:48:26 +00:00
Dmitry Vyukov 8d15db4a1e tsan: fix cmake warning (unused private field) 
llvm-svn: 172387
 2013-01-14 08:21:34 +00:00
Dmitry Vyukov af4b0b084a asan: fix compilation errors in mutex 
llvm-svn: 172385
 2013-01-14 08:01:58 +00:00
Dmitry Vyukov f22982bf0a asan/tsan: move blocking mutex from asan to sanitizer_common 
llvm-svn: 172380
 2013-01-14 07:51:39 +00:00
Kostya Serebryany 864ef315c0 [asan] make the slow unwinder a bit more robust. The unittests pass with fast_unwind_on_fatal=0, but I still observe some differences between the two unwinders 
llvm-svn: 171973
 2013-01-09 13:55:00 +00:00
Dmitry Vyukov 5b375d84c0 tsan: fix build 
llvm-svn: 170191
 2012-12-14 12:24:11 +00:00
Kostya Serebryany bb69879d09 [asan] pop the internal stack frames in SlowUnwindStack, extend the test to check this 
llvm-svn: 170124
 2012-12-13 12:31:55 +00:00
Kostya Serebryany baf583c443 [asan] add two asan flags: fast_unwind_on_fatal and fast_unwind_on_malloc to allow using the slow CFI-based unwinder 
llvm-svn: 170117
 2012-12-13 09:34:23 +00:00
Alexander Potapenko 1746f555ee Add a libsanitizer API __sanitizer_sandbox_on_notify(void* reserved), which should be used by 
the client programs to notify the tools that sandboxing is about to be turned on.

llvm-svn: 169732
 2012-12-10 13:10:40 +00:00
Dmitry Vyukov 3a2046b3a6 tsan: fix lint warnings 
llvm-svn: 169606
 2012-12-07 16:20:06 +00:00
Kostya Serebryany 35f9e5e87b [sanitizer] implement SanitizerSetThreadName/SanitizerGetThreadName. Just for linux so far (using prctl(PR_GET_NAME)) 
llvm-svn: 169598
 2012-12-07 11:27:24 +00:00
Dmitry Vyukov dd95cd148b tsan: fix lint warnings 
llvm-svn: 169369
 2012-12-05 10:16:02 +00:00