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Author SHA1 Message Date
Kostya Serebryany 9f298da9bd [asan] instrument memory accesses with unusual sizes 
This patch makes asan instrument memory accesses with unusual sizes (e.g. 5 bytes or 10 bytes), e.g. long double or
packed structures.
Instrumentation is done with two 1-byte checks
(first and last bytes) and if the error is found
__asan_report_load_n(addr, real_size) or
__asan_report_store_n(addr, real_size)
is called.

asan-rt part

Also fix lint.

llvm-svn: 175508
 2013-02-19 11:30:25 +00:00
Alexey Samsonov 4544d1fa3d [ASan] make variables unsigned to silence warnings - attempt 2 
llvm-svn: 175285
 2013-02-15 19:22:49 +00:00
Alexey Samsonov f6d7379def [ASan] make variable unsigned to silence the warning 
llvm-svn: 175284
 2013-02-15 19:02:32 +00:00
Alexander Potapenko 3182c3e441 [ASan] Fix https://code.google.com/p/address-sanitizer/issues/detail?id=159 
MaybeReexec() does now a tricky job to manage DYLD_INSERT_LIBRARIES in a safe way.

Because we're using library interposition, it's critical for an instrumented app
to be executed with the runtime library present in DYLD_INSERT_LIBRARIES list.
Therefore if it's initially missing in that list, we append the runtime library name
to the value of DYLD_INSERT_LIBRARIES and then exec() ourselves.

On the other hand, some of the apps exec()ed by our program may not want to have
ASan runtime library preloaded, so we remove the runtime library from the
DYLD_INSERT_LIBRARIES if it's already there.

Users may want to preload other libraries using DYLD_INSERT_LIBRARIES, so we preserve those.

llvm-svn: 175276
 2013-02-15 16:10:49 +00:00
Kostya Serebryany aa7f2b5aa6 [tsan] disable a failing test until it gets fixed. fix lint 
llvm-svn: 175137
 2013-02-14 06:54:51 +00:00
Alexander Potapenko c5ba5ef3c5 [ASan] When re-executing the process on OS X, make sure we update the existing DYLD_INSERT_LIBRARIES correctly. 
Previously ASan used to hang in an exec loop, because it failed to overwrite the env var value
(see https://code.google.com/p/address-sanitizer/issues/detail?id=159).

llvm-svn: 175059
 2013-02-13 17:52:55 +00:00
Alexander Potapenko 34157fc33f [ASan] Delete the code related to static runtime on OS X. 
Nuke lib/interception/mach_override.

llvm-svn: 174383
 2013-02-05 15:57:12 +00:00
Alexander Potapenko dc00c44d46 [ASan] Remove the declarations of pthread_workqueue_t and pthread_workitem_handle_t, which are used no more. 
Kudos to Jeremy Huddleston Sequoia <jeremyhu@apple.com>

llvm-svn: 173143
 2013-01-22 10:32:06 +00:00
Alexander Potapenko cae42d23a6 [ASan] Use dylib interposition to hook memory allocation in the dynamic runtime. 
This CL drastically simplifies the way we're hooking the memory allocation routines in ASan on Mac by using dylib interposition to replace the main malloc_zone_* functions. This allows us to avoid replacing the default CFAllocator and drop the CF dependency at all.

Committing this patch will result in the static runtime being broken. A follow-up CL will switch ASan to use the dynamic runtime library.

llvm-svn: 173134
 2013-01-22 09:14:54 +00:00
Alexander Potapenko 51794a390f Remove references to pthread_workqueue_additem_np(), which isn't in the official libdispatch API. 
llvm-svn: 172802
 2013-01-18 10:27:31 +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
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 3674c6b13b [asan] add a flag alloc_dealloc_mismatch (off by default for now) which finds malloc/delete, new/free, new/delete[], etc mismatches 
llvm-svn: 170869
 2012-12-21 08:53:59 +00:00
Kostya Serebryany 060bfab568 [asan] fix win build 
llvm-svn: 170119
 2012-12-13 10:03:50 +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 0dcd6d9468 [ASan] Do not build the interceptors that use ObjC blocks if the compiler does not support blocks. 
Need to define MISSING_BLOCKS_SUPPORT in this case at buildtime.

Patch by Jack Howarth <howarth@bromo.med.uc.edu>
 

llvm-svn: 169206
 2012-12-04 02:41:47 +00:00
Kostya Serebryany df198db1aa [asan/tsan] get rid of kPageSize completely in favor of GetPageSizeCached(). This makes the code friendly to more platforms 
llvm-svn: 168537
 2012-11-24 05:03:11 +00:00
Alexey Samsonov aac36b345a [ASan] intercept swapcontext on Linux only 
llvm-svn: 168509
 2012-11-23 10:14:44 +00:00
Kostya Serebryany 734f1eb5f4 [asan/tsan] do not use __WORDSIZE macro, as it is glibc-private thing. Instead, define our own SANITIZER_WORDSIZE 
llvm-svn: 168424
 2012-11-21 12:38:58 +00:00
Alexander Potapenko 1eef2b813c [ASan] Rename ReplaceCFAllocator to MaybeReplaceCFAllocator. 
Replace the allocator only if the replace_cfallocator flag is set (in some cases it wasn't checked)

llvm-svn: 166550
 2012-10-24 09:35:23 +00:00
Alexander Potapenko e3e80d607f Do not call ReplaceCFAllocator() before __CFInitialize(), otherwise crashes are possible on 10.8. 
Fixes http://code.google.com/p/address-sanitizer/issues/detail?id=122

llvm-svn: 166029
 2012-10-16 16:58:10 +00:00
Alexander Potapenko 4a78e1002d Add MACOS_VERSION_MOUNTAIN_LION. 
llvm-svn: 166026
 2012-10-16 16:24:49 +00:00
Alexey Samsonov 4787d0fbef [ASan] more macro/casting magic to suppress warnings 
llvm-svn: 163706
 2012-09-12 14:10:14 +00:00
Alexander Potapenko 3ecf916c33 Use the return value of dladdr() to avoid Clang warning. 
llvm-svn: 163311
 2012-09-06 12:18:45 +00:00
Kostya Serebryany ee92877f17 [asan] more refactoring to move StackTrace to sanitizer_common 
llvm-svn: 162752
 2012-08-28 13:25:55 +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
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
Alexander Potapenko 2ebe619340 Re-implement the wrappers for libdispatch functions using blocks where appropriate 
(kudos to Anna Zaks for a good example).
This simplifies the code much and lets us not implement internal parts of libdispatch.

All ASan tests from t32 and t64 should pass with the dylib runtime now.

llvm-svn: 162439
 2012-08-23 09:34:40 +00:00
Kostya Serebryany 6b745b5281 [asan] fix lint 
llvm-svn: 162258
 2012-08-21 06:43:44 +00:00
Alexander Potapenko 02e6f03236 Dynamic interceptors for dispatch_async and dispatch_after. 
llvm-svn: 162202
 2012-08-20 11:59:26 +00:00
Alexander Potapenko 1233d558dc Minor refactoring: reduce code duplication by introducing a macro for dispatch_sync_f, dispatch_async_f, dispatch_barrier_async_f bodies. 
llvm-svn: 162199
 2012-08-20 09:25:10 +00:00
Alexander Potapenko 20f9fcc285 Move the prototype of __CFInitialize to asan_mac.h so that asan_malloc_mac.cc may use it in the dynamic library mode. 
llvm-svn: 161945
 2012-08-15 12:23:36 +00:00
Alexey Samsonov 36d2dff143 [ASan] fix cmake build warning 
llvm-svn: 160957
 2012-07-30 10:18:31 +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 34efb8e9b9 [ASan] Use common flags parsing machinery. 
llvm-svn: 159933
 2012-07-09 14:36:04 +00:00
Alexander Potapenko 89f9270366 A portable way to check whether __CFInitialize has been called: compare kCFAllocatorSystemDefault._base._cfisa to 0. 
This should fix http://code.google.com/p/address-sanitizer/issues/detail?id=87 on both Lion and Snow Leopard.

llvm-svn: 159821
 2012-07-06 13:04:12 +00:00
Alexander Potapenko d2ff0b087a Do not check for __CFRuntimeClassTableSize on non-10.6 systems, where this symbol is private. 
This change may cause http://code.google.com/p/address-sanitizer/issues/detail?id=87 to re-appear on Lion.

llvm-svn: 159819
 2012-07-06 11:58:54 +00:00
Alexander Potapenko 25b567dd0d Fix http://code.google.com/p/address-sanitizer/issues/detail?id=87 by making sure we replace the default CFAllocator only after __CFInitialize has been called. 
llvm-svn: 159749
 2012-07-05 14:46:56 +00:00
Alexey Samsonov 70386aaffa [ASan] cleanup: trailing semicolons, trailing colons in enums 
llvm-svn: 159338
 2012-06-28 08:27:24 +00:00
Alexander Potapenko f9f2fbacb3 Actually intercept free() to ensure that the deallocations caused by other functions directly calling it are routed to our allocator. 
For the allocations that do not belong to any malloc zone check whether they're padded with a pointer to ASan's CFAllocator. If so, free the original (unpadded) pointer.
This should fix AddressSanitizerMac.NSURLDeallocation and issue 70.

llvm-svn: 158863
 2012-06-20 22:29:09 +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 52f946611f [ASan] don't include deleted header 
llvm-svn: 158448
 2012-06-14 13:15:45 +00:00
Alexey Samsonov 4b1f1031e6 [Sanitizer] factor out GetThreadStackTopAndBottom from ASan runtime to common. 
llvm-svn: 158140
 2012-06-07 07:13:46 +00:00
Alexey Samsonov 28a9895ee0 [Sanitizer] __asan::AsanProcMaps -> __sanitizer::ProcessMaps. 
llvm-svn: 158139
 2012-06-07 06:15:12 +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
Kostya Serebryany 79437fe376 [asan] make tid u32 instead of int 
llvm-svn: 158074
 2012-06-06 15:06:58 +00:00
Alexey Samsonov d44cb4cb8a [ASan] match type of arguments to format string on Mac. 
llvm-svn: 158068
 2012-06-06 13:44:19 +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 8602c65719 [Sanitizer] remove using namespace __sanitizer lines 
llvm-svn: 157999
 2012-06-05 14:05:09 +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 9354688dc5 [ASan] s/size_t/uptr in asan_mac.cc 
llvm-svn: 157993
 2012-06-05 09:13:33 +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
Alexey Samsonov 2c5fc3bb11 Created files sanitizer_linux.cc and sanitizer_mac.cc for platform-specific implementations of common functions. Turned asan_mmap into __sanitizer::internal_mmap. 
llvm-svn: 157930
 2012-06-04 14:27:50 +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
Evgeniy Stepanov 8152e22073 Move AsanShadowRangeIsAvailable() from mac to posix. 
llvm-svn: 157326
 2012-05-23 15:21:50 +00:00
Alexey Samsonov 7ec936a4f4 [ASan] remove dispatch.h header once again - it's not present on Leopard, and we don't want to break the build of compiler-rt there. See https://trac.macports.org/ticket/33362 
llvm-svn: 154326
 2012-04-09 16:45:18 +00:00
Alexander Potapenko c6eb6a8287 Add internal_memset and replace the uses of REAL(memset) with it where the performance allows. 
llvm-svn: 153641
 2012-03-29 12:20:47 +00:00
Alexey Samsonov 8ada45553d [asan]: substitute extern decls with system header in asan_mac.cc 
llvm-svn: 153182
 2012-03-21 13:00:04 +00:00
Alexey Samsonov 9ce04b0c36 [asan] merge mac-specific interceptors into one function 
llvm-svn: 153180
 2012-03-21 12:42:00 +00:00
Alexey Samsonov 5f7048b396 [asan]: remove asan_mac.h 
llvm-svn: 153179
 2012-03-21 12:29:54 +00:00
Alexey Samsonov 1d4145380e [asan]: start removing os-specific asan_mac.h - move inclusion of mac system header to asan_mac.cc 
llvm-svn: 153178
 2012-03-21 12:03:44 +00:00
Alexey Samsonov c298b3674f [ASan]: remove GetMacosVersion from asan_mac.h header 
llvm-svn: 153084
 2012-03-20 10:54:40 +00:00
Kostya Serebryany e059c124a8 [asan] one more -Wnull-conversion fix 
llvm-svn: 152773
 2012-03-15 04:26:00 +00:00
Alexey Samsonov 278c25f241 AddressSanitizer: simplify IntervalsAreSeparate function 
llvm-svn: 150569
 2012-02-15 08:27:34 +00:00
Alexander Potapenko 438447a7f3 Fix compilation on Mac. 
llvm-svn: 150400
 2012-02-13 17:14:31 +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
Alexey Samsonov 8489f2a564 AddressSanitizer: start factoring out interception machinery 
llvm-svn: 150083
 2012-02-08 19:52:01 +00:00
Alexey Samsonov e725478e2f AddressSanitizer: replace all "real_X" calls with "REAL(X)" 
llvm-svn: 150073
 2012-02-08 13:45:31 +00:00
Alexey Samsonov 15965f9c3d AddressSanitizer: Add macro for definition/declaration of interceptors 
llvm-svn: 149602
 2012-02-02 10:39:40 +00:00
Kostya Serebryany 7e7d0ca1a2 [asan] remove dead code 
llvm-svn: 149392
 2012-01-31 17:29:02 +00:00
Alexander Potapenko 81203bdb33 Implement GetMacosVersion() to obtain the OS X version at runtime. 
llvm-svn: 149382
 2012-01-31 13:19:18 +00:00
Kostya Serebryany fed83c5755 [asan] ifdef/include cleanup 
llvm-svn: 149281
 2012-01-30 22:11:04 +00:00
Alexander Potapenko 98f0c713d9 Fix a bug in AsanProcMaps on Mac: on 64 bits the program was trying to read twice as many segment load commands as the binary actually contained. 
llvm-svn: 149063
 2012-01-26 17:01:20 +00:00
Alexander Potapenko 046ecc06be Wrap CFStringCreateCopy to prevent copying constant CF strings. 
This should fix http://code.google.com/p/address-sanitizer/issues/detail?id=10

llvm-svn: 148696
 2012-01-23 10:09:54 +00:00
Alexander Potapenko 3825e9770b Minor fixes of the AsanProcMaps code on Mac: 
-- make the load command scan linear (instead of quadratic)
 -- do not create a nested AsanProcMaps instance for each address lookup
 -- more comments

llvm-svn: 148472
 2012-01-19 12:44:06 +00:00
Evgeniy Stepanov 84c44a8b8b EHABI-based stack trace on ARM. 
The change removes the unused FLAG_fast_unwind, and forces EHABI-based unwind
on ARM, and fast (FP-based) unwind everywhere else.

llvm-svn: 148468
 2012-01-19 11:34:18 +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 2b2e0721d7 Define the bounds of the branch allocator memory space for 32-bit apps. 
llvm-svn: 148303
 2012-01-17 09:38:54 +00:00
Alexey Samsonov 2d3a67b73b AddressSanitizer: create AsanThreadSummary together with AsanThread (in parent thread) 
llvm-svn: 148286
 2012-01-17 06:35:31 +00:00
Alexey Samsonov 50bf956f29 AddressSanitizer: fix recently introduced lint errors and broken test on Mac. 
llvm-svn: 148235
 2012-01-16 12:38:09 +00:00
Alexander Potapenko bd53f597de This patch adds two methods, __asan_allocate_island and __asan_deallocate_island 
and switches our interceptors to using them instead of the default
vm_allocate-based approach used by mach_override_ptr.

To simplify the code, a fixed memory mapping is used for the allocation pool --
note that we can't mmap an arbitrary chunk of memory, because the shadow memory hasn't been mapped yet
(for the reasons discussed in http://code.google.com/p/address-sanitizer/issues/detail?id=24, we cannot map the shadow earlier)

The patch drops the program startup time from several second to half a second,
which speeds up the execution of ASan tests noticeably.
Because of the virtual memory size occupied by the programs it's hard
to speed up the shutdown time, which would've also helped the tests.

llvm-svn: 148116
 2012-01-13 16:13:58 +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 332923be32 [asan] get rid of the scary TSD destructor code. Now, we store the leaky AsanThreadSummary in TSD and never remove it from there. 
llvm-svn: 147910
 2012-01-11 02:03:16 +00:00
Kostya Serebryany a82f0d4950 [asan] move OS-dependent code away from asan_lock.h 
llvm-svn: 147878
 2012-01-10 21:24:40 +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 3f4b9bb4a0 [asan] do not use new/delete for the internal thread structure 
llvm-svn: 147674
 2012-01-06 19:44:11 +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 78d87d3b4b [asan] move {linux,mac}-specific code from asan_thread.cc to asan_{linux,mac}.cc; also add asan_procmaps.h which I forgot to add on previous commit. 
llvm-svn: 147586
 2012-01-05 01:07:27 +00:00
Kostya Serebryany a772096156 [asan] refactoring: don't #include <sys/mman.h> in non-os-specific files 
llvm-svn: 147328
 2011-12-28 23:28:54 +00:00
Kostya Serebryany 6c4bd806fa [asan] use custom libc-free getenv; a bit of refactoring around mmap calls 
llvm-svn: 147326
 2011-12-28 22:58:01 +00:00
Kostya Serebryany 6bb2f1d5b5 Recently the GCD tests started failing because of the invalid size of 
FakeStack on the worker threads.
This patch moves the AsanThread initialization into a separate
procedure that's called when AsanThread objects are called for worker
threads.
Patch by glider@google.com

llvm-svn: 146752
 2011-12-16 19:13:35 +00:00
Kostya Serebryany c5be44aaa2 [asan] quick fix for mac build, second attempt. Sorry for spam. 
llvm-svn: 145694
 2011-12-02 18:52:35 +00:00
Kostya Serebryany 196cd6af90 [asan] quick fix for mac build 
llvm-svn: 145692
 2011-12-02 18:48:20 +00:00
Kostya Serebryany 2d27cdf621 [asan] minimize the use of STL. One bit is still left. 
llvm-svn: 145691
 2011-12-02 18:42:04 +00:00