c0443c5d25
[ASan] fix a typo in legend in error report
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llvm-svn: 179161
2013-04-10 07:00:25 +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
734aab4066
[Sanitizer] Use a common mutex to prevent mixing reports from different sanitizers. This fixes PR15516
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llvm-svn: 178853
2013-04-05 07:30:29 +00:00
e624795558
[ASan] More careful reports for globals that are ASCII strings
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llvm-svn: 178458
2013-04-01 08:57:38 +00:00
7152debedd
[ASan] Demangle global names in error reports.
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llvm-svn: 178131
2013-03-27 10:41:22 +00:00
88b2b45ec8
[asan] print thread number while reporting invalid-free and double-free; add tests; also add a test for use-after-poison
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llvm-svn: 177993
2013-03-26 08:01:37 +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
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
c4722a65a5
[asan] while generating the description of a global variable, emit the module name in a separate field, thus not duplicating this information if every description. This decreases the binary size (observed up to 3%). https://code.google.com/p/address-sanitizer/issues/detail?id=168 . This changes the asan API version. compiler-rt part, llvm-part will follow
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llvm-svn: 177253
2013-03-18 08:04:55 +00:00
aadd1f2ad6
[Sanitizer] use raw syscall instead of _exit() function on Linux
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llvm-svn: 175622
2013-02-20 13:54:32 +00:00
b4c2c5c8a6
[asan] print a short one-line report summary after the full report. Currently, works only if symbolization happens in-process.
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llvm-svn: 174501
2013-02-06 12:36:49 +00:00
1bc7298c44
[asan] Fix nonsensical reports of partial right OOB.
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In case of partial right OOB, ASan was reporting
X is located 0 bytes to the right of [A, B)
where X was actually inside [A, B).
With this change, ASan will report B as the error address in such case.
llvm-svn: 174373
2013-02-05 14:32:03 +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
7d2e4c0389
[asan] simplify the code that poisons global redzones, add some more tests
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llvm-svn: 173251
2013-01-23 11:14:21 +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
d66b12b701
[ASan] Teach ASan to print demangled function name when describing stack frame
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llvm-svn: 171112
2012-12-26 14:44:46 +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
19e8b7ecba
[ASan] remove duplicate entry in shadow byte legend
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llvm-svn: 170701
2012-12-20 15:19:10 +00:00
d5c46cb2f7
[asan] print the shadow bytes in different colors and also output the shadow byte legend
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llvm-svn: 170520
2012-12-19 09:53:32 +00:00
bad01549b6
[asan] add some colors to asan output if printing to tty (following ubsan)
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llvm-svn: 170418
2012-12-18 07:32:16 +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
e7108227ca
[asan] intercept prctl(PR_SET_NAME) and set the thread name. Output the thread names (if non-empty) in asan reports
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llvm-svn: 169601
2012-12-07 15:15:01 +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
0d7755ccb5
[ASan] Add interceptor for swapcontext to fight with false positives in some of its use cases.
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llvm-svn: 168508
2012-11-23 09:46:34 +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
27a22688b9
[ASan] use raw Exit() to kill the program in case ASan finds an error while reporting the error in the same thread
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llvm-svn: 168308
2012-11-19 11:22:22 +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
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
16205cd4fa
[asan] change the asan output slightly to avoid user confusion: a) add ':' after 'AddressSanitizer' and b) changed 'crashed' to 'SEGV'
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llvm-svn: 165932
2012-10-15 13:04:58 +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
8661465edd
[ASan] Move printing descriptions of heap addresses in error report from allocator internals to asan_report.cc.
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llvm-svn: 164112
2012-09-18 07:38:10 +00:00
3869b4b35a
[ASan] increase sleep time if ASan finds two bugs simultaneously to make sure full error report is printed
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llvm-svn: 164018
2012-09-17 08:02:19 +00:00
b156b56a28
Revert r163411 based on review discussion.
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In code review, it looked like these warnings do not actually fire with
modern Clang or GCC. However, the pragma is flat out rejected by GCC in
many configurations (-Werror) so it ended up causing more problems than
it fixed.
Daniel agreed with reverting this, but I think didn't have time to get
to it.
llvm-svn: 163583
2012-09-11 01:13:51 +00:00
04ab17b0cd
[asan] Suppress some bogus -Winvalid-noreturn diagnostics.
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llvm-svn: 163411
2012-09-07 19:57:20 +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
a57b4e823a
[asan] even more refactoring to move StackTrace to sanitizer_common
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llvm-svn: 162754
2012-08-28 13:49:49 +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
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
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
f87ff74075
[ASan] Add __asan_set_on_error_callback() interface function that allows user to set a callback to be called right when ASan detects an error
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llvm-svn: 161754
2012-08-13 11:23:40 +00:00
a72c7cf227
[ASan] If ASan finds second error report, wait for some time and die (instead of running in a busy loop) to make sure ASan won't hang if it finds error while reporting an error in the same thread
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llvm-svn: 161749
2012-08-13 09:57:19 +00:00
b93df94238
[ASan] share code executed at the beginning/end of printing error reports
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llvm-svn: 161666
2012-08-10 15:13:05 +00:00
f343eb7df4
[ASan] Move mac-specific error reports to asan_report.cc as well
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llvm-svn: 161576
2012-08-09 12:15:40 +00:00
b53a670817
[ASan] Small fix to please tests on Windows, where stack unwinding using provided pc/bp works too bad
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llvm-svn: 161575
2012-08-09 11:29:13 +00:00
f688412b8c
[ASan] Move __asan_report_error implementation to asan_report.cc
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llvm-svn: 161574
2012-08-09 10:56:57 +00:00
65b9acf0af
[ASan] move code that describes globals to asan_report.cc
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llvm-svn: 161572
2012-08-09 09:27:24 +00:00
4ce12349d6
[ASan] move some functions that describe addresses to asan_report.cc
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llvm-svn: 161571
2012-08-09 09:06:52 +00:00
c0ff933d8b
[ASan] Move error reporting code away from file with interceptors
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llvm-svn: 161570
2012-08-09 08:32:33 +00:00
Alexey Samsonov