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2017-12-14[Sanitizers] Basic sanitizer Solaris support (PR 33274)Kamil Rytarowski
Summary: This is the first mostly working version of the Sanitizer port to 32-bit Solaris/x86. It is currently based on Solaris 11.4 Beta. This part was initially developed inside libsanitizer in the GCC tree and should apply to both. Subsequent parts will address changes to clang, the compiler-rt build system and testsuite. I'm not yet sure what the right patch granularity is: if it's profitable to split the patch up, I'd like to get guidance on how to do so. Most of the changes are probably straightforward with a few exceptions: * The Solaris syscall interface isn't stable, undocumented and can change within an OS release. The stable interface is the libc interface, which I'm using here, if possible using the internal _-prefixed names. * While the patch primarily target 32-bit x86, I've left a few sparc changes in. They cannot currently be used with clang due to a backend limitation, but have worked fine inside the gcc tree. * Some functions (e.g. largefile versions of functions like open64) only exist in 32-bit Solaris, so I've introduced a separate SANITIZER_SOLARIS32 to check for that. The patch (with the subsequent ones to be submitted shortly) was tested on i386-pc-solaris2.11. Only a few failures remain, some of them analyzed, some still TBD: AddressSanitizer-i386-sunos :: TestCases/Posix/concurrent_overflow.cc AddressSanitizer-i386-sunos :: TestCases/init-order-atexit.cc AddressSanitizer-i386-sunos :: TestCases/log-path_test.cc AddressSanitizer-i386-sunos :: TestCases/malloc-no-intercept.c AddressSanitizer-i386-sunos-dynamic :: TestCases/Posix/concurrent_overflow.cc AddressSanitizer-i386-sunos-dynamic :: TestCases/Posix/start-deactivated.cc AddressSanitizer-i386-sunos-dynamic :: TestCases/default_options.cc AddressSanitizer-i386-sunos-dynamic :: TestCases/init-order-atexit.cc AddressSanitizer-i386-sunos-dynamic :: TestCases/log-path_test.cc AddressSanitizer-i386-sunos-dynamic :: TestCases/malloc-no-intercept.c SanitizerCommon-Unit :: ./Sanitizer-i386-Test/MemoryMappingLayout.DumpListOfModules SanitizerCommon-Unit :: ./Sanitizer-i386-Test/SanitizerCommon.PthreadDestructorIterations Maybe this is good enough the get the ball rolling. Reviewers: kcc, alekseyshl Reviewed By: alekseyshl Subscribers: srhines, jyknight, kubamracek, krytarowski, fedor.sergeev, llvm-commits, #sanitizers Tags: #sanitizers Differential Revision: https://reviews.llvm.org/D40898 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@320740 91177308-0d34-0410-b5e6-96231b3b80d8
2017-08-05Add NetBSD support in sanitizer_unwind_linux_libcdep.ccKamil Rytarowski
Summary: NetBSD is a POSIX-like and BSD-family system. Reuse FreeBSD and Linux code. NetBSD uses DWARF ExceptionHandler. Part of the code inspired by the original work on libsanitizer in GCC 5.4 by Christos Zoulas. Sponsored by <The NetBSD Foundation> Reviewers: joerg, kcc, filcab, vitalybuka Reviewed By: vitalybuka Subscribers: srhines, emaste, llvm-commits, kubamracek, aprantl, #sanitizers Tags: #sanitizers Differential Revision: https://reviews.llvm.org/D36314 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@310179 91177308-0d34-0410-b5e6-96231b3b80d8
2016-06-28Adding a comment to explain r273886 ("Stop unwinding the stack when a ↵Kuba Brecka
close-to-zero PC is found"). NFC. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@274010 91177308-0d34-0410-b5e6-96231b3b80d8
2016-06-27[sanitizer] Stop unwinding the stack when a close-to-zero PC is foundKuba Brecka
On OS X, we often get stack trace in a report that ends with a 0x0 frame. To get rid of it, let's trim the stack trace when we find a close-to-zero value, which is obviously not a valid PC. Differential Revision: http://reviews.llvm.org/D14656 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@273886 91177308-0d34-0410-b5e6-96231b3b80d8
2016-05-11[asan] Don't use libcorkscrew on Android L+.Evgeniy Stepanov
ASan runtime library used libcorkscrew from Android platform for stack unwinding. Since Android L, this is both unnecessary (the libgcc unwinder has been fixed) and impossible (the library is not there any more). Don't even try. This should have not effect on modern Android devices other than removing a message about failing to open the library with ASAN_OPTIONS=verbosity=1. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@269233 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-24One more change required to build the sanitizers for iOS.Chris Bieneman
Summary: _Unwind_Backtrace is not available on iOS, so we should ifdef out the posix implementations of BufferedStackTrace::SlowUnwindStack and BufferedStackTrace::SlowUnwindStackWithContext on iOS. Reviewers: samsonov Reviewed By: samsonov Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D10696 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@240586 91177308-0d34-0410-b5e6-96231b3b80d8