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163 Commits

Author SHA1 Message Date
Kostya Serebryany fd61b6f0c8 [asan] make asan work with 7fff8000 offset and prelink 
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem    ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem     ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow  ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap  ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow  ||
|| [0x000000000000, 0x00007fff7fff] || LowMem     ||

Do it only if necessary.

Also added a bit of profiling code to make sure that the
mapping code is efficient.

Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.

Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.

Patch partially by Jakub Jelinek.

llvm-svn: 175263
 2013-02-15 12:00:24 +00:00
Alexey Samsonov a0c0da8f51 [ASan] Split ASan interface header into private and public parts. Add a test that makes sure users can include interface header 
llvm-svn: 174058
 2013-01-31 13:46:14 +00:00
Alexey Samsonov 4f1885a109 [ASan] minor changes to swapcontext handling: don't clear shadow memory if context stack is too large 
llvm-svn: 172727
 2013-01-17 15:45:28 +00:00
Kostya Serebryany 181f504d82 [asan] properly define ASAN_LOW_MEMORY. Due to a mistake it has been always true causing redzone and quarantine sizes to be smaller than it was some time before (and out of sync with the documentation). Also make one test less greedy 
llvm-svn: 171052
 2012-12-25 07:17:17 +00:00
Alexey Samsonov a0e4706fe6 ASan: change the strategy we use for installing malloc/free/symbolization hooks on Linux: don't provide a default no-op implementations for hooks in runtime, and optionally call hooks if they are provided by the user. Don't force weak interface functions into runtime. 
llvm-svn: 169641
 2012-12-07 22:01:28 +00:00
Alexey Samsonov 45b6edbd1d ASan: add new interface functions - __asan_(un)poison_stack_memory. Calls to these functions are inserted by the instrumentation pass in use-after-scope mode 
llvm-svn: 169201
 2012-12-04 01:38:15 +00:00
Alexey Samsonov 0d7755ccb5 [ASan] Add interceptor for swapcontext to fight with false positives in some of its use cases. 
llvm-svn: 168508
 2012-11-23 09:46:34 +00:00
Alexander Potapenko bcc00a4174 [ASan] Revert r168040 and r168043 and take a cleaner solution suggested by Kostya: return the known frame name for fake stack instead of looking it up. 
llvm-svn: 168046
 2012-11-15 15:24:42 +00:00
Alexander Potapenko b34db9e883 [ASan] Poison the leftmost shadow byte with a special value so that we can find 
the beginning of the fake frame when reporting an use-after-return error.
Fixes http://code.google.com/p/address-sanitizer/issues/detail?id=126

llvm-svn: 168040
 2012-11-15 13:40:44 +00:00
Alexander Potapenko 0f0a50da56 Set ASAN_NEEDS_SEGV=0 on Android only. 
llvm-svn: 165120
 2012-10-03 15:09:17 +00:00
Alexey Samsonov e29c6731aa [Sanitizer/ASan] Simplify the code that prints and symbolizes stack traces. Fall back to module+offset if user-provided symbolizer failed. Use weak function __asan_symbolize instead of __asan_set_symbolize_callback in ASan interface, so that we're able to symbolize reports for errors that happen before the main() is called, for example, during module initialization. 
llvm-svn: 165000
 2012-10-02 12:11:17 +00:00
Evgeniy Stepanov 9792396a06 [asan] Change defaults for Android target. 
This way building without -DASAN_* in CFLAGS produces working binaries.

llvm-svn: 164816
 2012-09-28 10:07:53 +00:00
Kostya Serebryany 66a37f3aef [asan] one more fix for windows build 
llvm-svn: 162762
 2012-08-28 15:25:07 +00:00
Kostya Serebryany 7575968aa4 [asan] actually move StackTrace to sanitizer_common 
llvm-svn: 162757
 2012-08-28 14:11:57 +00:00
Kostya Serebryany 6b0d775229 [asan] some renaming before we move StackTrace into sanitizer_common 
llvm-svn: 162747
 2012-08-28 11:54:30 +00:00
Kostya Serebryany bb6f165952 [asan] get rid of AsanPrintf in favor of Printf from sanitizer_common 
llvm-svn: 162746
 2012-08-28 11:34:40 +00:00
Evgeniy Stepanov be01398612 A few tweaks for building ASanRT against Android NDK. 
llvm-svn: 162666
 2012-08-27 11:15:55 +00:00
Alexey Samsonov dc8d1f1039 [Sanitizer] move low-level (mmap-based) allocator to sanitizer_common 
llvm-svn: 162663
 2012-08-27 09:30:58 +00:00
Alexander Potapenko fefc1e989c If the program is linked to a dynamic ASan runtime which is not present in DYLD_INSERT_LIBRARIES 
(which, in turn, is required for our interceptors to take effect), re-exec the program with
DYLD_INSERT_LIBRARIES set.

llvm-svn: 162547
 2012-08-24 09:22:05 +00:00
Alexey Samsonov a85b6b8154 [ASan] get rid of ASAN_USE_EXTERNAL_SYMBOLIZER compiler def in favor of __asan_set_symbolize_callback interface function. Now the user doesn't have to recompile ASan runtime to provide its own symbolizer 
llvm-svn: 162358
 2012-08-22 13:31:37 +00:00
Kostya Serebryany 676bcdb838 [asan] run-time part of the initialization order checker. Patch by Reid Watson with some bits from kcc. The sub-pass is off by default for now. On simple tests it works fine. 
llvm-svn: 162278
 2012-08-21 14:10:25 +00:00
Alexey Samsonov 4ce12349d6 [ASan] move some functions that describe addresses to asan_report.cc 
llvm-svn: 161571
 2012-08-09 09:06:52 +00:00
Alexander Potapenko 51e6488b31 Intercept CFAllocator for each thread in the program. 
Test that child threads use the ASan allocator, that allocated memory can be passed to another thread and deallocated on it.
This should fix http://code.google.com/p/address-sanitizer/issues/detail?id=81

llvm-svn: 160630
 2012-07-23 14:07:58 +00:00
Alexey Samsonov 9f666ea6ca [ASan] move flags description to separate header, add comments about them. 
llvm-svn: 159985
 2012-07-10 07:41:27 +00:00
Alexey Samsonov 2467ca5010 [ASan] cleanup: remove dead flag 
llvm-svn: 159934
 2012-07-09 15:11:28 +00:00
Alexey Samsonov 34efb8e9b9 [ASan] Use common flags parsing machinery. 
llvm-svn: 159933
 2012-07-09 14:36:04 +00:00
Alexander Potapenko 1bde28b464 Factor the common code out of cf_free and mz_free. 
Introduce the mac_ignore_invalid_free flag (0 by default) which makes both cf_free and mz_free ignore invalid free invocations and leak memory.

llvm-svn: 158885
 2012-06-21 01:01:20 +00:00
Alexey Samsonov 156958dd0c [Sanitizer] move all the rest re-implementations of libc functions from ASan runtime to common sanitizer runtime 
llvm-svn: 158519
 2012-06-15 13:09:52 +00:00
Alexey Samsonov 40e5128412 [Sanitizer] move ShadowRangeIsAvailable and several defines to common runtime 
llvm-svn: 158499
 2012-06-15 07:29:14 +00:00
Alexey Samsonov e4a889866d [Sanitizer] move atomic ops, min/max and sort to commnon runtime 
llvm-svn: 158496
 2012-06-15 07:00:31 +00:00
Alexey Samsonov 70afb91636 [Sanitizer] move more portability wrappers to common runtime: sleep, _exit, abort, atexit, pthread_self 
llvm-svn: 158493
 2012-06-15 06:37:34 +00:00
Alexey Samsonov ae1e171b72 [Sanitizer] move DumpProcessMap and DisableCoreDumper to common runtime 
llvm-svn: 158490
 2012-06-15 06:08:19 +00:00
Alexey Samsonov c70d1086f6 [Sanitizer] move rest of mmap routines to common sanitizer runtime 
llvm-svn: 158452
 2012-06-14 14:42:58 +00:00
Alexey Samsonov 0c53a38abb [Sanitizer] move portable GetEnv to common sanitizer runtime 
llvm-svn: 158451
 2012-06-14 14:07:21 +00:00
Alexey Samsonov fe44fbd750 [Sanitizer] Move ReadFileToBuffer to sanitizer_common. 
llvm-svn: 158138
 2012-06-07 05:38:26 +00:00
Alexey Samsonov 40d5b772e5 [Sanitizer] Switch to common mmap/munmap routines in ASan run-time. 
llvm-svn: 158078
 2012-06-06 16:15:07 +00:00
Alexey Samsonov e95e29c2ac [Sanitizer] Make UNIMPLEMENTED macro common. 
llvm-svn: 158077
 2012-06-06 15:47:40 +00:00
Alexey Samsonov e428779dbf [Sanitizer] Use common CHECK machinery. Currently each tool has to define its own CheckFailed function. 
llvm-svn: 158075
 2012-06-06 15:22:20 +00:00
Kostya Serebryany 53b74ac256 [asan] start compacting the allocator header, the goal is to make it 16 bytes w/o losing any information 
llvm-svn: 158072
 2012-06-06 14:46:38 +00:00
Alexey Samsonov d323f4e78e [Sanitizer] Remove __attribute__((format)) 
llvm-svn: 158070
 2012-06-06 13:58:39 +00:00
Alexey Samsonov 51ae983718 [Sanitizer]: Introduce a common internal printf function. For now, also use tool-specific wrappers TsanPrintf (its output is controlled by TSan flags) and AsanPrintf (which copies its results to the ASan-private buffer). Supported formats: %[z]{d,u,x}, %s, %p. Re-write all format strings in TSan according to this format (this should have no effect on 64-bit platforms). 
llvm-svn: 158065
 2012-06-06 13:11:29 +00:00
Alexey Samsonov ee07290628 [Sanitizer] Move more functions/constants to sanitizer_common. 
llvm-svn: 158056
 2012-06-06 09:26:25 +00:00
Alexey Samsonov c4b201308b [ASan] Use __sanitizer::Die() in ASan runtime. 
llvm-svn: 158051
 2012-06-06 07:02:44 +00:00
Alexey Samsonov 5bbf8290a7 [Sanitizer] rename sanitizer_defs.h to sanitizer_internal_defs.h 
llvm-svn: 158001
 2012-06-05 14:25:27 +00:00
Alexey Samsonov 8602c65719 [Sanitizer] remove using namespace __sanitizer lines 
llvm-svn: 157999
 2012-06-05 14:05:09 +00:00
Alexey Samsonov ef2e2cfd33 [Sanitizer] Use common defines for ASan and TSan runtime. Split defines between interface defines (can be visible in user code that includes interface ASan/TSan headers) and internal defines. 
llvm-svn: 157998
 2012-06-05 13:50:57 +00:00
Alexey Samsonov 7ac77d6b29 [Sanitizer] add sanitizer_posix.cc. Move more various functions into sanitizer_libc: sscanf, munmap, memchr 
llvm-svn: 157994
 2012-06-05 09:49:25 +00:00
Alexey Samsonov 1b12eda7ec [ASan] use internal_{close,read,write} in ASan runtime. 
llvm-svn: 157991
 2012-06-05 08:48:10 +00:00
Alexey Samsonov f5e2dc3c3d [ASan] use internal_open from sanitizer_libc in ASan runtime 
llvm-svn: 157986
 2012-06-05 07:25:47 +00:00
Kostya Serebryany f8c5a5bcbc [asan] partial fix for windows build 
llvm-svn: 157748
 2012-05-31 15:44:05 +00:00
Kostya Serebryany 1d35d155fd [asan] more renaming 
llvm-svn: 157747
 2012-05-31 15:02:07 +00:00
Kostya Serebryany 8d03204204 [asan] more renaming 
llvm-svn: 157746
 2012-05-31 14:35:53 +00:00
Kostya Serebryany c5bea20e2e [asan,tsan] rename files in sanitizer_common to have a common prefix (sanitizer_). 
llvm-svn: 157740
 2012-05-31 13:42:53 +00:00
Kostya Serebryany 458b4006b2 [asan,tsan] Add a new directory compiler-rt/lib/sanitizer_common 
which will contain code shared between asan and tsan run-times.

Naming is hard. If you can suggest a better name for the directory -- speak up.

llvm-svn: 157611
 2012-05-29 12:18:18 +00:00
Alexander Potapenko 0efd915d92 Rework the flags machinery a bit. 
Clients may define the __asan_default_options char string containing the default options for the tool now.

llvm-svn: 157582
 2012-05-28 16:21:19 +00:00
Alexander Potapenko 442002568c Introduce the check_malloc_usable_size flag (on by default). 
When the flag is set to zero, we do not check for errors in malloc_usable_size.
This may be useful to work around a bug in Nvidia drivers prior to 295.*

llvm-svn: 157472
 2012-05-25 15:20:13 +00:00
Timur Iskhodzhanov ea365131a2 [ASan] Make for-Windows RTL compileable using Clang++ 
llvm-svn: 157188
 2012-05-21 14:25:36 +00:00
Kostya Serebryany d2863dab85 [asan] last bit for gcc compatibility 
llvm-svn: 154203
 2012-04-06 20:36:18 +00:00
Alexey Samsonov 6a19d5d209 [ASan] move replacements for new/delete to separate file 
llvm-svn: 154167
 2012-04-06 08:21:08 +00:00
Kostya Serebryany 1490c7996f [asan] add flags: disable_core, abort_on_error and unmap_shadow_on_exit 
llvm-svn: 154159
 2012-04-06 01:27:11 +00:00
Kostya Serebryany 7a8f5e4d1e [asan] make __asan::Deallocate immune to racy double-free (issue #57) 
llvm-svn: 154097
 2012-04-05 15:55:09 +00:00
Alexander Potapenko 08342aa1a1 Introduce the use_sigaltstack flag (off by default), which enables using alternate 
per-thread stacks for signal handling. This allows to print more verbose error reports
for stack overflows.

llvm-svn: 154092
 2012-04-05 10:54:52 +00:00
Alexey Samsonov 1fd5dbc140 [ASan] use macro to define if we should intercept signal/sigaction 
llvm-svn: 153430
 2012-03-26 09:07:29 +00:00
Alexey Samsonov c298b3674f [ASan]: remove GetMacosVersion from asan_mac.h header 
llvm-svn: 153084
 2012-03-20 10:54:40 +00:00
Alexey Samsonov cae79fbab9 [ASan]: re-enable noreturn attribute on posix 
llvm-svn: 153082
 2012-03-20 10:14:55 +00:00
Kostya Serebryany 54a3cac5c5 [asan] fix unwinding inside libc intercepors (asan issue #46) 
llvm-svn: 152768
 2012-03-15 01:36:00 +00:00
Timur Iskhodzhanov d8d9fd66c6 [ASan] Undo NORETURN on POSIX as it's not clear how to do this cleanly yet 
llvm-svn: 152631
 2012-03-13 16:48:46 +00:00
Timur Iskhodzhanov f0b7595e08 [ASan] Fix build error on Linux; screen-reviewed by glider@google.com 
llvm-svn: 152629
 2012-03-13 16:29:25 +00:00
Timur Iskhodzhanov 70df757918 [ASan/Win] Eliminate a couple of FIXMEs, add NORETURN to CheckFailed/UNIMPLEMENTED 
llvm-svn: 152628
 2012-03-13 16:12:03 +00:00
Kostya Serebryany b0f9354168 [asan] use O(log(N)) algorithm instead of O(N) in __asan_get_ownership 
llvm-svn: 152467
 2012-03-10 01:30:01 +00:00
Evgeniy Stepanov d84e16e6a3 Replace some #ifdef(s) with plain if(s). 
llvm-svn: 151526
 2012-02-27 13:07:29 +00:00
Timur Iskhodzhanov 0f9c9a5332 [ASan] Intercept CreateThread on Windows 
llvm-svn: 151366
 2012-02-24 15:28:43 +00:00
Alexey Samsonov 53e191e77e AddressSanitizer: quick fix - undef INT32_MIN etc to avoid macro redefinition 
llvm-svn: 151165
 2012-02-22 16:12:46 +00:00
Alexey Samsonov d6651509d0 AddressSanitizer: get rid of stdlib.h and add (smaller) stddef.h instead 
llvm-svn: 151162
 2012-02-22 14:07:06 +00:00
Alexey Samsonov a5b3130e86 AddressSanitizer: get rid of limits.h, use constants for fixed size integral types instead. 
llvm-svn: 151159
 2012-02-22 12:54:04 +00:00
Alexander Potapenko 2c0ed61c7a Move the contents of AsanProcMaps::Dump() into AsanDumpProcessMaps() for Posix systems. 
Define AsanDumpProcessMaps as unimplemented on Windows.

This should fix the Windows build.

llvm-svn: 151147
 2012-02-22 09:11:55 +00:00
Kostya Serebryany fcd535ba6c [asan] implement __asan_set_death_callback 
llvm-svn: 150414
 2012-02-13 21:24:29 +00:00
Alexander Potapenko 720aaefb8d Move the non-trivial implementation of AsanShadowRangeIsAvailable to asan_mac.cc 
to avoid crashes on Linux and Win.

llvm-svn: 150398
 2012-02-13 17:09:40 +00:00
Timur Iskhodzhanov 7ce3e5bb8e [asan] The first version of the RTL for Windows, reviewed at http://codereview.appspot.com/5647052 
llvm-svn: 150185
 2012-02-09 17:20:14 +00:00
Alexander Potapenko 1da11ec357 Move the _ReturnAddress definition out of the __asan:: namespace 
Patch by Timur Iskhodzhanov (timurrrr@google.com)

llvm-svn: 150075
 2012-02-08 14:14:18 +00:00
Alexander Potapenko 42cdb7e640 Typo fix: s/SNPrint/SNPrintf 
llvm-svn: 150069
 2012-02-08 11:45:09 +00:00
Kostya Serebryany f98fc08bc7 [asan] GET_CALLER_PC macro for Win. Patch by timurrrr@google.com 
llvm-svn: 149994
 2012-02-07 18:23:54 +00:00
Kostya Serebryany b5eb5a7a05 [asan] make sure the AsanThread object is destroyed if pthread_exit is called 
llvm-svn: 149940
 2012-02-07 00:27:15 +00:00
Alexey Samsonov 23e3b90319 AddressSanitizer: Replace __attribute__ with macro (for Win compatibility). Patch by timurrrr@google.com 
llvm-svn: 149686
 2012-02-03 08:37:19 +00:00
Kostya Serebryany 9160b5059b [asan] fix the wrong __WORDSIZE definition on Win x64, add ASAN_INTERFACE_FUNCTION_ATTRIBUTE. Patch by timurrrr@google.com 
llvm-svn: 149395
 2012-01-31 18:13:50 +00:00
Kostya Serebryany bca91defcb [asan] new run-time flag: sleep_before_dying (asan Issue #31) 
llvm-svn: 149306
 2012-01-31 00:52:18 +00:00
Kostya Serebryany 510850c345 [asan] minor ifdef cleanup 
llvm-svn: 149274
 2012-01-30 20:55:02 +00:00
Alexander Potapenko f519564d7c Make compiler-rt/trunk/lib/asan compileable with Visual Studio 2008 on Windows. 
Patch by Timur Iskhodzhanov (timurrrr@google.com)

To test:
$ cl /c *.c*
in the asan directory.

The code fails to link if you omit the "/c" part but that's one of the
next steps,
as well as a few TODO's I've put into the Windows-specific code.

llvm-svn: 149130
 2012-01-27 15:15:04 +00:00
Alexander Potapenko 13d95d5e5a Make compiler-rt/trunk/lib/asan compileable with g++. 
Patch by Timur Iskhodzhanov (timurrrr@google.com)

The double-extern thing is
http://llvm.org/bugs/show_bug.cgi?id=11869

And the #include <string[s].h> are only needed on Mac (see comments in
the original code)
and also including them might make strchr/index conflict with the g++
system headers (which don't follow the man pages, ouch!)

llvm-svn: 149129
 2012-01-27 10:52:37 +00:00
Alexander Potapenko 38da9a04f5 Delete sysinfo/* and all references to it. 
llvm-svn: 148386
 2012-01-18 11:42:30 +00:00
Alexander Potapenko 4257386879 Implement AsanProcMaps for Mac OS. The code from sysinfo/ is not needed anymore and should be cleaned up. 
llvm-svn: 148385
 2012-01-18 11:16:05 +00:00
Alexander Potapenko 553c208d22 This patch moves the code reading /proc/self/environ into AsanGetEnv 
in asan_linux.cc, because /proc is unavailable on Mac.
Instead the Mac version of AsanGetEnv iterates over the array of
environment variables obtained from _NSGetEnviron()

llvm-svn: 148114
 2012-01-13 12:59:48 +00:00
Kostya Serebryany 41cdb8614c [asan] remove OS-dependent headers from asan_internal.h 
llvm-svn: 147919
 2012-01-11 02:39:16 +00:00
Kostya Serebryany 1dd51b53b2 [asan] move TSD code into asan_posix.cc 
llvm-svn: 147913
 2012-01-11 02:21:06 +00:00
Kostya Serebryany edb4a8a128 [asan] don't include unistd.h in the headers 
llvm-svn: 147811
 2012-01-09 23:11:26 +00:00
Kostya Serebryany 5be458ccfd [asan] refactoring: move some common linux/mac code to asan_posix.cc 
llvm-svn: 147788
 2012-01-09 19:18:27 +00:00
Kostya Serebryany 9fd01e5ea5 [asan] refactoring: move all interceptors to a single file 
llvm-svn: 147784
 2012-01-09 18:53:15 +00:00
Kostya Serebryany 25d6c1b3c3 [asan] move more code into OS-specific files 
llvm-svn: 147671
 2012-01-06 19:11:09 +00:00
Kostya Serebryany 2b08718bba [asan] move more stuff to OS-specific files 
llvm-svn: 147647
 2012-01-06 02:12:25 +00:00
Kostya Serebryany cd271f5440 [asan] implement our own /proc/self/maps reader and use it on linux instead of sysinfo.h 
llvm-svn: 147581
 2012-01-05 00:44:33 +00:00