9b75b757de
[Asan] Pack signal context into a structure
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Differential Revision: http://reviews.llvm.org/D6148
llvm-svn: 222756
2014-11-25 13:00:21 +00:00
eb392de411
As a follow up to r222001, Peter Bergner pointed out that there is
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nothing 64-bit-specific about the PowerPC stack overflow detection.
llvm-svn: 222084
2014-11-15 13:52:10 +00:00
1180c05db2
[ASan] Improved stack overflow detection for PowerPC64
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Summary:
AsanOnSIGSEGV has some heuristics for detecting stack overflow, but
they don't cope with a PowerPC store-with-update instruction which
modifies sp and stores to the modified address in one instruction.
This patch adds some PowerPC-specific code to check for this case.
This fixes the last few cases of the stack-overflow test.
Reviewers: kcc, samsonov, eugenis
Reviewed By: eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6253
llvm-svn: 222001
2014-11-14 15:30:39 +00:00
dc6cbfe859
[Sanitizers] Enable stack traces on FreeBSD
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Differential Revision: http://reviews.llvm.org/D6086
llvm-svn: 221595
2014-11-10 15:22:04 +00:00
2f945ba85f
[ASan] Fix stack-overflow test for PowerPC
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Summary:
Tweak the asan stack overflow heuristics to cope with PowerPC64 redzones,
which are larger than on x86-64: 288 bytes for big-endian and 512 bytes
for little-endian.
Reviewers: kcc, willschm, samsonov, eugenis
Reviewed By: samsonov, eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6168
llvm-svn: 221578
2014-11-08 09:51:45 +00:00
19853dd28c
[ASan/Win] Catch NULL derefs and page faults
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Reviewed at http://reviews.llvm.org/D4471
llvm-svn: 212807
2014-07-11 11:57:41 +00:00
a7c602ac29
A set of trivial changes to support sanitizers on FreeBSD.
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Patch by Viktor Kutuzov!
llvm-svn: 202801
2014-03-04 08:55:41 +00:00
cba008e9c5
[asan] A different way of detectinb stack overflow.
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Instead of checking stack limits that are not well defined for the main thread,
we rely on siginfo::si_code and distance from SP.
llvm-svn: 201673
2014-02-19 13:40:41 +00:00
769d46f373
[sanitizer] Use system unwinder in signal handlers on Android.
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Because of the way Bionic sets up signal stack frames, libc unwinder is unable
to step through it, resulting in broken SEGV stack traces.
Luckily, libcorkscrew.so on Android implements an unwinder that can start with
a signal context, thus sidestepping the issue.
llvm-svn: 201151
2014-02-11 13:38:57 +00:00
789e3e1b7c
[ASan] Move the SIGSEGV/SIGBUS handling to sanitizer_common
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This change is a part of refactoring intended to have common signal handling behavior in all tools.
This particular CL moves InstallSignalHandlers() into sanitizer_common (making it InstallDeadlySignalHandlers()), but doesn't enable default signal handlers for any tool other than ASan.
llvm-svn: 200542
2014-01-31 13:10:07 +00:00
77f5c20a5b
[ASan] Fix compilation.
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llvm-svn: 200312
2014-01-28 12:23:14 +00:00
d8d490ed50
[ASan] Move the sigaltstack() bits to sanitizer_common.
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This change is a part of refactoring intended to have common signal handling behavior in all tools.
Note that this particular change doesn't enable use_sigaltstack support in every tool.
llvm-svn: 200310
2014-01-28 11:12:29 +00:00
cf4bef3161
[ASan] Move the signal handling-related flags to sanitizer_common.
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This change is a part of refactoring intended to have common signal handling behavior in all tools.
llvm-svn: 200295
2014-01-28 09:28:57 +00:00
9be70fbda9
[sanitizer] Introduce VReport and VPrintf macros and use them in sanitizer code.
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Instead of "if (common_flags()->verbosity) Report(...)" we now have macros.
llvm-svn: 196497
2013-12-05 12:04:51 +00:00
52ca74ec61
tsan: move verbosity flag to CommonFlags
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llvm-svn: 192701
2013-10-15 13:28:51 +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
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
21cb74318c
[ASan] Kill the remainders of platform defines in favor of SANITIZER_ defines
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llvm-svn: 178629
2013-04-03 07:29:53 +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
0af672326a
[sanitizer] Replace more platform checks with SANITIZER_ constants.
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llvm-svn: 177400
2013-03-19 14:33:38 +00:00
aac36b345a
[ASan] intercept swapcontext on Linux only
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llvm-svn: 168509
2012-11-23 10:14:44 +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
aa05110a17
[ASan] Create new files asan_report.{h,cc} as a preparation for refactoring of ASan error reporting code.
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Currently ASan reports many kinds of errors, and the code that actually prints error messages can
be found inside allocator, OS-specific files, interceptors code etc.
An example of maintenance troubles this situation causes:
There is currently an ASan interface function that registers
callback which should take the char buffer with error report printed by ASan.
This function is now broken, as one has to insert callback calls to all the places in
ASan code where the error reports are printed, surprisingly it is not only
"__asan_report_error" function...
llvm-svn: 161568
2012-08-09 07:40:58 +00:00
34efb8e9b9
[ASan] Use common flags parsing machinery.
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llvm-svn: 159933
2012-07-09 14:36:04 +00:00
40e5128412
[Sanitizer] move ShadowRangeIsAvailable and several defines to common runtime
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llvm-svn: 158499
2012-06-15 07:29:14 +00:00
e4a889866d
[Sanitizer] move atomic ops, min/max and sort to commnon runtime
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llvm-svn: 158496
2012-06-15 07:00:31 +00:00
70afb91636
[Sanitizer] move more portability wrappers to common runtime: sleep, _exit, abort, atexit, pthread_self
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llvm-svn: 158493
2012-06-15 06:37:34 +00:00
ae1e171b72
[Sanitizer] move DumpProcessMap and DisableCoreDumper to common runtime
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llvm-svn: 158490
2012-06-15 06:08:19 +00:00
52f946611f
[ASan] don't include deleted header
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llvm-svn: 158448
2012-06-14 13:15:45 +00:00
28a9895ee0
[Sanitizer] __asan::AsanProcMaps -> __sanitizer::ProcessMaps.
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llvm-svn: 158139
2012-06-07 06:15:12 +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
53b74ac256
[asan] start compacting the allocator header, the goal is to make it 16 bytes w/o losing any information
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llvm-svn: 158072
2012-06-06 14:46:38 +00:00
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).
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llvm-svn: 158065
2012-06-06 13:11:29 +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
ee07290628
[Sanitizer] Move more functions/constants to sanitizer_common.
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llvm-svn: 158056
2012-06-06 09:26:25 +00:00
c4b201308b
[ASan] Use __sanitizer::Die() in ASan runtime.
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llvm-svn: 158051
2012-06-06 07:02:44 +00:00
8602c65719
[Sanitizer] remove using namespace __sanitizer lines
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llvm-svn: 157999
2012-06-05 14:05:09 +00:00
1b12eda7ec
[ASan] use internal_{close,read,write} in ASan runtime.
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llvm-svn: 157991
2012-06-05 08:48:10 +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
bb50e7f08c
Be more verbose when installing the signals.
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llvm-svn: 157693
2012-05-30 15:29:11 +00:00
8152e22073
Move AsanShadowRangeIsAvailable() from mac to posix.
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llvm-svn: 157326
2012-05-23 15:21:50 +00:00
1490c7996f
[asan] add flags: disable_core, abort_on_error and unmap_shadow_on_exit
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llvm-svn: 154159
2012-04-06 01:27:11 +00:00
7a8f5e4d1e
[asan] make __asan::Deallocate immune to racy double-free (issue #57 )
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llvm-svn: 154097
2012-04-05 15:55:09 +00:00
08342aa1a1
Introduce the use_sigaltstack flag (off by default), which enables using alternate
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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
f0b7595e08
[ASan] Fix build error on Linux; screen-reviewed by glider@google.com
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llvm-svn: 152629
2012-03-13 16:29:25 +00:00
b0f9354168
[asan] use O(log(N)) algorithm instead of O(N) in __asan_get_ownership
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llvm-svn: 152467
2012-03-10 01:30:01 +00:00
d6651509d0
AddressSanitizer: get rid of stdlib.h and add (smaller) stddef.h instead
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llvm-svn: 151162
2012-02-22 14:07:06 +00:00
Viktor Kutuzov