0b07c63e07
[ASan] Allow ASan default runtime options be overriden at compile time by providing ASAN_DEFAULT_OPTIONS macro
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llvm-svn: 175512
2013-02-19 13:14:48 +00:00
9f298da9bd
[asan] instrument memory accesses with unusual sizes
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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
fd61b6f0c8
[asan] make asan work with 7fff8000 offset and prelink
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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
c192af29f5
[ASan] Remove the replace_cfallocator flag, which is used no more.
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See https://code.google.com/p/address-sanitizer/issues/detail?id=10 for the context.
llvm-svn: 174629
2013-02-07 15:59:37 +00:00
dc91edad59
[ASan] Enable alloc_dealloc_mismatch by default on Darwin.
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Enable AddressSanitizer.AllocDeallocMismatch tests.
llvm-svn: 174628
2013-02-07 15:55:21 +00:00
bda64b4d40
[sanitizer] make the error messages from sanitizer_common contain the actual tool name
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llvm-svn: 174059
2013-01-31 14:11:21 +00:00
a0c0da8f51
[ASan] Split ASan interface header into private and public parts. Add a test that makes sure users can include interface header
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llvm-svn: 174058
2013-01-31 13:46:14 +00:00
61761f182b
[asan] fix a crash in asan stats printing (initialize the allocator in __asan_init)
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llvm-svn: 173676
2013-01-28 08:05:47 +00:00
6c17547ef1
[asan] two more internal flags for asan-rt: print_stats (0) and print_legend (1)
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llvm-svn: 173671
2013-01-28 07:34:22 +00:00
8f267137c2
[asan] initialize kHighMemEnd at startup (instead of at compile time) to simplify further changes for various address space layouts. Fix asan_allocator2 for PowerPC (tested on 44-bit address space)
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llvm-svn: 173260
2013-01-23 13:27:43 +00:00
84c7e47b5c
[asan] kill some dead code
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llvm-svn: 172815
2013-01-18 13:01:44 +00:00
b05fc3a493
[asan] use the slow CFI-based unwinder when reporting an error. Still use the fast unwinder for malloc/free. Linux-x86-only for now.
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llvm-svn: 172397
2013-01-14 11:01:34 +00:00
aaa50f06d4
ASan: Disable alloc/dealloc-mismatch checker on Mac for now (it produces weird false positives on googletest)
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llvm-svn: 172394
2013-01-14 10:18:38 +00:00
f22982bf0a
asan/tsan: move blocking mutex from asan to sanitizer_common
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llvm-svn: 172380
2013-01-14 07:51:39 +00:00
b3d04ede8c
[asan] add a new interface function __asan_describe_address, useful for running asan-ified binary under a debugger (e.g. gdb)
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llvm-svn: 171217
2012-12-29 10:18:31 +00:00
cb510e50e2
[asan] implement more strict checking for memset/etc parameters. Instead of checking the first and the last byte, we check the entire shadow region. This costs ~10 slowdown for the instrumented functions. Motivated by a nasty memset-buffer-overflow-by-140-bytes in chrome which was reported as a use-after-free or not at all
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llvm-svn: 171198
2012-12-28 15:24:16 +00:00
1302e8d6da
[asan] enable alloc_dealloc_mismatch by default
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llvm-svn: 171147
2012-12-27 08:08:05 +00:00
35cc75876a
[asan] asan_allocator2: implement adaptive redzones. Now with asan_allocator2 allocations <= 48 bytes have 16 byte redzone, allocations of 48-96 bytes -- have 32 bytes redzone, etc (max redzone is 2048). If ASAN_OPTIONS=redzone=n is set, it changes the minimal redzone size
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llvm-svn: 171107
2012-12-26 10:41:24 +00:00
a11cd57a78
[asan] asan_allocator2: by default use the StackDepot to store the stack traces instead of storing them in the redzones
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llvm-svn: 171099
2012-12-26 06:30:02 +00:00
3674c6b13b
[asan] add a flag alloc_dealloc_mismatch (off by default for now) which finds malloc/delete, new/free, new/delete[], etc mismatches
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llvm-svn: 170869
2012-12-21 08:53:59 +00:00
9da3dd0415
[asan] add a flag poison_heap to allow better allocator benchmarking, implemenet malloc_stats() on Linux
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llvm-svn: 170685
2012-12-20 11:54:21 +00:00
340de607a3
[ASan] don't print memory stats on CheckFailed
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llvm-svn: 170120
2012-12-13 11:09:26 +00:00
baf583c443
[asan] add two asan flags: fast_unwind_on_fatal and fast_unwind_on_malloc to allow using the slow CFI-based unwinder
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llvm-svn: 170117
2012-12-13 09:34:23 +00:00
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.
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llvm-svn: 169641
2012-12-07 22:01:28 +00:00
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
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llvm-svn: 169201
2012-12-04 01:38:15 +00:00
df198db1aa
[asan/tsan] get rid of kPageSize completely in favor of GetPageSizeCached(). This makes the code friendly to more platforms
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llvm-svn: 168537
2012-11-24 05:03:11 +00:00
f22c697f58
[asan] get rid of some of the uses of kPageSize. The intent is to get rid of it completely to support platforms with multiple possible page sizes.
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llvm-svn: 168517
2012-11-23 15:38:49 +00:00
734f1eb5f4
[asan/tsan] do not use __WORDSIZE macro, as it is glibc-private thing. Instead, define our own SANITIZER_WORDSIZE
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llvm-svn: 168424
2012-11-21 12:38:58 +00:00
78c340d205
[ASan] Change __asan_set_on_error_callback to weak overridable __asan_on_error, so that ASan would call the latter even if it finds the error early (i.e. during module initialization)
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llvm-svn: 165008
2012-10-02 14:06:39 +00:00
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.
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llvm-svn: 165000
2012-10-02 12:11:17 +00:00
45d849c4bd
[asan] add asan option log_path=PATH to let users redirect asan reports to a file PATH.PID instead of stderr
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llvm-svn: 163872
2012-09-14 04:35:14 +00:00
5c6b93bc33
[Sanitizer] Get rid of dependency between sanitizer_common and asan/tsan runtimes: implement tool-specific Die and CheckFailed functions via callbacks
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llvm-svn: 163603
2012-09-11 09:44:48 +00:00
38c3f9ef2f
Remove the infinite recursion check for now, as we don't have __thread on Mac, and TSD is an overkill.
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llvm-svn: 163393
2012-09-07 15:50:19 +00:00
c5adb8a700
Two minor changes:
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-- exit from infinite recursion in CHECK()
-- print a verbose message if mapping of the shadow memory has failed.
llvm-svn: 163391
2012-09-07 15:34:40 +00:00
6e6817a823
[asan] Raise quarantine size a bit with ASAN_LOW_MEMORY.
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Our tests expect that a 16M block will fit in the quarantine.
llvm-svn: 163384
2012-09-07 12:13:52 +00:00
35bc23ce58
Fix two compiler warnings: must use at least one argument for "..." in a variadic macros, signed vs. unsigned comparison.
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llvm-svn: 163314
2012-09-06 13:31:13 +00:00
f9caa28ccf
[asan] increase max stack size to 256 (+test)
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llvm-svn: 163308
2012-09-06 10:57:03 +00:00
ae350f66d4
[asan] increase the maximal size of malloc/free stack
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llvm-svn: 163291
2012-09-06 04:46:47 +00:00
c402cb62fd
[ASan] Add print_full_thread_history runtime option (on by default) that prints all full thread creation paths for threads involved in ASan error report
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llvm-svn: 163200
2012-09-05 07:37:15 +00:00
1aa4fef601
Relocate the external headers provided by ASan and the common sanitizer
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library.
These headers are intended to be available to user code when built with
AddressSanitizer (or one of the other sanitizer's in the future) to
interface with the runtime library. As such, they form stable external
C interfaces, and the headers shouldn't be located within the
implementation.
I've pulled them out into what seem like fairly obvious locations and
names, but I'm wide open to further bikeshedding of these names and
locations.
I've updated the code and the build system to cope with the new
locations, both CMake and Makefile. Please let me know if this breaks
anyone's build.
The eventual goal is to install these headers along side the Clang
builtin headers when we build the ASan runtime and install it. My
current thinking is to locate them at:
<prefix>/lib/clang/X.Y/include/sanitizer/common_interface_defs.h
<prefix>/lib/clang/X.Y/include/sanitizer/asan_interface.h
<prefix>/lib/clang/X.Y/include/sanitizer/...
But maybe others have different suggestions?
Fixing the style of the #include between these headers at least unblocks
experimentation with installing them as they now should work when
installed in these locations.
llvm-svn: 162822
2012-08-29 02:27:54 +00:00
bb6f165952
[asan] get rid of AsanPrintf in favor of Printf from sanitizer_common
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llvm-svn: 162746
2012-08-28 11:34:40 +00:00
e67a5dd8e1
[Sanitizer] Use low-level allocator in flag parsing to avoid calling malloc() before ASan/TSan initialization is done
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llvm-svn: 162673
2012-08-27 14:04:54 +00:00
dc8d1f1039
[Sanitizer] move low-level (mmap-based) allocator to sanitizer_common
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llvm-svn: 162663
2012-08-27 09:30:58 +00:00
00492cab3e
Revert the erroneous changes made to Makefile.old in r162547
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Remove a spare newline from asan_rtl.cc
llvm-svn: 162548
2012-08-24 09:31:53 +00:00
fefc1e989c
If the program is linked to a dynamic ASan runtime which is not present in DYLD_INSERT_LIBRARIES
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(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
419f610a74
[Sanitizer] Switch the symbolization strategy that would be used by sanitizer tools family: as compiling in-process symbolizer into runtime involves certain difficulties, we may instead launch an external symbolizer program (fork + execl) in a subprocess and communicate with it via pipe.
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llvm-svn: 162437
2012-08-23 07:32:06 +00:00
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
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llvm-svn: 162358
2012-08-22 13:31:37 +00:00
de17f86655
[ASan] make ASan malloc/free hooks weak interface functions, overridable by user. Now the user can control malloc/free hooks without recompiling ASan runtime
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llvm-svn: 162355
2012-08-22 10:12:47 +00:00
68d9c9da40
[asan] fix mac build
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llvm-svn: 162279
2012-08-21 14:43:36 +00:00
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.
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llvm-svn: 162278
2012-08-21 14:10:25 +00:00
Alexey Samsonov