e0e31c4a30
[ASan] Clarify that AsanThread objects are allocated only via mmap(). No functionality change.
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llvm-svn: 195840
2013-11-27 13:22:21 +00:00
04a1767a2e
[asan] fix a leak in tds ( https://code.google.com/p/address-sanitizer/issues/detail?id=233 )
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llvm-svn: 194572
2013-11-13 13:27:44 +00:00
50cb32e614
Introduce an operator new for LowLevelAllocator, and convert most users to it.
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llvm-svn: 193308
2013-10-24 06:23:39 +00:00
f11e485d60
[asan] allocate AsanThreadContext using LowLevelAllocator instead of mmap to save space
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llvm-svn: 192980
2013-10-18 15:07:07 +00:00
9628839869
[asan] reduce the size of AsanThreadContext by storing the stack trace in the stack depot
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llvm-svn: 192979
2013-10-18 14:50:44 +00:00
52ca74ec61
tsan: move verbosity flag to CommonFlags
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llvm-svn: 192701
2013-10-15 13:28:51 +00:00
43d90cbd86
[lsan] Support ASan's stack-use-after-return mode in LSan.
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Treat the fake stack as live memory.
llvm-svn: 192593
2013-10-14 14:04:50 +00:00
da9f5e7e7f
[asan] Improve thread lifetime tracking on POSIX systems.
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Call AsanThread::Destroy() from a late-running TSD destructor.
Previously we called it before any user-registered TSD destructors, which caused
false positives in LeakSanitizer.
llvm-svn: 192585
2013-10-14 12:01:05 +00:00
3c42ce1516
[asan] introduce run-time flag uar_stack_size_log to control the size of FakeStack; don't crash when the fake stack is exhausted, move some code to .cc file
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llvm-svn: 191510
2013-09-27 11:37:23 +00:00
f8bbdfaf95
[asan] fix one more async-signal-safety issue with use-after-return
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llvm-svn: 191004
2013-09-19 14:59:52 +00:00
c3d43ca3ec
[asan] add a run-time option detect_stack_use_after_return, add verbosity output for fake stack
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llvm-svn: 190932
2013-09-18 10:35:12 +00:00
43c4493b44
[asan] second attempt to use TLS with fake stack. This time it looks (more) async-signal safe.
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llvm-svn: 190663
2013-09-13 06:32:26 +00:00
44441cc34b
[asan] (part 2) don't lazy-init fake_stack if we only need to check that fake_stack exists (should fix 32-bit builds)
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llvm-svn: 190594
2013-09-12 08:47:00 +00:00
736bd08e05
[asan] don't lazy-init fake_stack if we only need to check that fake_stack exists (should fix 32-bit builds)
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llvm-svn: 190593
2013-09-12 08:43:44 +00:00
628cda7367
[asan] hopefully make the FakeStack async-signal safe, enable the related test
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llvm-svn: 190592
2013-09-12 08:34:50 +00:00
4b16885839
Improve collecting malloc stats in ASan
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Summary:
This change makes races between updates of thread-local stats and
merging all the thread-local stats together less harmful.
Reviewers: kcc
Reviewed By: kcc
CC: dvyukov, llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1572
llvm-svn: 189744
2013-09-02 08:39:07 +00:00
bdeff959a1
[lsan] Handle fork() correctly.
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Update the main thread's os_id on every pthread_create, and before
initiating leak checking. This ensures that we have the correct os_id even if we
have forked after Init().
llvm-svn: 185815
2013-07-08 12:57:24 +00:00
6a068a715d
[asan] initialize fake_stack lazily and increase its maximal size. This makes -fsanitize=address,use-after-return more robust: all SPEC tests pass now. In the default mode thread stacks become a bit smaller.
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llvm-svn: 184934
2013-06-26 12:16:05 +00:00
b94d5e2d1c
[asan] Move lsan_disabled out of thread context.
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Fix for the case where disabler is used in pthread key destructor.
llvm-svn: 184553
2013-06-21 14:51:52 +00:00
baf90ccfac
Fix ALIGNED misuse in asan_thread.cc (built on all platforms); also, add a comment to the ALIGNED macro describing the correct usage
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llvm-svn: 183214
2013-06-04 08:25:17 +00:00
c1aa0e8f69
[asan] ASan Linux MIPS32 support (compiler-rt part), patch by Jyun-Yan Y
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llvm-svn: 183105
2013-06-03 14:49:25 +00:00
17ee1abfa7
[lsan] Add __lsan_disable() and __lsan_enable().
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Objects allocated after a call to __lsan_disable() will be treated as
live memory. Also add a ScopedDisabler.
llvm-svn: 183099
2013-06-03 11:21:34 +00:00
09886cd17a
[asan] Make ASan report the correct thread address ranges to LSan.
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This CL enables thread support in LSan when used on top of ASan.
llvm-svn: 182854
2013-05-29 13:09:44 +00:00
65dd62abe5
[asan] LSan hooks in asan_thread.cc
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llvm-svn: 182378
2013-05-21 13:40:13 +00:00
5b4267f7e7
[sanitizer] found a bug by code inspection: CHECK(a=b) instead of CHECK(a==b). Was puzzled why lint did not catch it. Turns out this check was disabled for asan source. fix all cases and enable the check
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llvm-svn: 178872
2013-04-05 14:40:25 +00:00
a88c60b085
[ASan] Speed-up initialization-order checking: create and use fast versions of PoisonShadow functions, store copies of __asan_global descriptors in a vector instead of list of pointers. This gives 3x speedup on both benchmarks and real binaries with lots of globals.
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llvm-svn: 178239
2013-03-28 15:42:43 +00:00
667a34a120
[asan] Change the way we report the alloca frame on stack-buff-overflow.
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Before: the function name was stored by the compiler as a constant string
and the run-time was printing it.
Now: the PC is stored instead and the run-time prints the full symbolized frame.
This adds a couple of instructions into every function with non-empty stack frame,
but also reduces the binary size because we store less strings (I saw 2% size reduction).
This change bumps the asan ABI version to v3.
compiler-rt part, llvm part will follow.
Example of report (now):
==31711==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fffa77cf1c5 at pc 0x41feb0 bp 0x7fffa77cefb0 sp 0x7fffa77cefa8
READ of size 1 at 0x7fffa77cf1c5 thread T0
#0 0x41feaf in Frame0(int, char*, char*, char*) stack-oob-frames.cc:20
#1 0x41f7ff in Frame1(int, char*, char*) stack-oob-frames.cc:24
#2 0x41f477 in Frame2(int, char*) stack-oob-frames.cc:28
#3 0x41f194 in Frame3(int) stack-oob-frames.cc:32
#4 0x41eee0 in main stack-oob-frames.cc:38
#5 0x7f0c5566f76c (/lib/x86_64-linux-gnu/libc.so.6+0x2176c)
#6 0x41eb1c (/usr/local/google/kcc/llvm_cmake/a.out+0x41eb1c)
Address 0x7fffa77cf1c5 is located in stack of thread T0 at offset 293 in frame
#0 0x41f87f in Frame0(int, char*, char*, char*) stack-oob-frames.cc:12 <<<<<<<<<<<<<< this is new
This frame has 6 object(s):
[32, 36) 'frame.addr'
[96, 104) 'a.addr'
[160, 168) 'b.addr'
[224, 232) 'c.addr'
[288, 292) 's'
[352, 360) 'd'
llvm-svn: 177723
2013-03-22 10:36:24 +00:00
a7e42b5be5
asan: fix lint warning about line length
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llvm-svn: 177709
2013-03-22 07:29:59 +00:00
54afba8b62
[ASan] Switch ASan to generic ThreadRegistry from sanitizer_common. Delete ASan-specific AsanThreadRegistry.
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llvm-svn: 177634
2013-03-21 11:23:41 +00:00
cf025cb2e6
[ASan] Move GetCurrentThread/SetCurrentThread from AsanThreadRegistry class into plain functions: they don't actually use registry
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llvm-svn: 177501
2013-03-20 09:23:28 +00:00
63c36bbe5e
[asan] fix two off-by-one errors that seem to affect only PowerPC because only there the stack top may be equal to the address space top. Noted by Andreas Schwab in http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55975#c11 . Also make swapcontext interceptor a bit more robust
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llvm-svn: 172807
2013-01-18 11:30:36 +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
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.
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llvm-svn: 168046
2012-11-15 15:24:42 +00:00
93dcc8d2bd
[ASan] Minor fix: return to the last byte of the fake stack if we've raced by.
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llvm-svn: 168043
2012-11-15 14:59:19 +00:00
b34db9e883
[ASan] Poison the leftmost shadow byte with a special value so that we can find
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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
f9caa28ccf
[asan] increase max stack size to 256 (+test)
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llvm-svn: 163308
2012-09-06 10:57:03 +00:00
6b0d775229
[asan] some renaming before we move StackTrace into sanitizer_common
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llvm-svn: 162747
2012-08-28 11:54:30 +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
51e6488b31
Intercept CFAllocator for each thread in the program.
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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
78713bc574
[asan] get rid of the last operator new call in asan rtl
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llvm-svn: 160347
2012-07-17 07:20:13 +00:00
34efb8e9b9
[ASan] Use common flags parsing machinery.
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llvm-svn: 159933
2012-07-09 14:36:04 +00:00
52f946611f
[ASan] don't include deleted header
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llvm-svn: 158448
2012-06-14 13:15:45 +00:00
4b1f1031e6
[Sanitizer] factor out GetThreadStackTopAndBottom from ASan runtime to common.
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llvm-svn: 158140
2012-06-07 07:13:46 +00:00
40d5b772e5
[Sanitizer] Switch to common mmap/munmap routines in ASan run-time.
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llvm-svn: 158078
2012-06-06 16:15:07 +00:00
79437fe376
[asan] make tid u32 instead of int
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llvm-svn: 158074
2012-06-06 15:06:58 +00:00
461820ad67
[ASan] Make printf arguments match format strings better.
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llvm-svn: 158059
2012-06-06 10:46:00 +00:00
485d3dc363
Remove file-type tags for .cc files in ASan run-time library
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llvm-svn: 157927
2012-06-04 13:50:10 +00:00
1d35d155fd
[asan] more renaming
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llvm-svn: 157747
2012-05-31 15:02:07 +00:00
8d03204204
[asan] more renaming
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llvm-svn: 157746
2012-05-31 14:35:53 +00:00
Alexey Samsonov