en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#21f72c05 [hwasan] Add __hwasan_add_frame_record to the hwasan interfaceHwasan includes instructions in the prologue that mix the PC and SP and storeit into the stack ring buffer stored at __hwasan_tls. This is a thread_localglobal exposed from the hwasan runtime. However, if TLS-mechanisms or thehwasan runtime haven't been setup yet, it will be invalid to access __hwasan_tls.This is the case for Fuchsia where we instrument libc, so some functions thatare instrumented but can run before hwasan initialization will incorrectlyaccess this global. Additionally, libc cannot have any TLS variables, so wecannot weakly define __hwasan_tls until the runtime is loaded.A way we can work around this is by moving the instructions into a hwasanfunction that does the store into the ring buffer and creating a weak definitionof that function locally in libc. This way __hwasan_tls will not actually bereferenced. This is not our long-term solution, but this will allow us to rollout hwasan in the meantime.This patch includes:- A new llvm flag for choosing to emit a libcall rather than instructions in the prologue (off by default)- The libcall for storing into the ringbuffer (__hwasan_add_frame_record)Differential Revision: https://reviews.llvm.org/D128387 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Wed, 13 Jul 2022 22:07:59 +0000 Leonard Chan <leonardchan@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#d843d5c8 Revert "[hwasan] Add __hwasan_record_frame_record to the hwasan interface"This reverts commit 4956620387ee45a48a394853a47ddd65195c4cc6.This broke a sanitizer builder: https://lab.llvm.org/buildbot/#/builders/77/builds/19597 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Wed, 13 Jul 2022 22:06:07 +0000 Leonard Chan <leonardchan@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#49566203 [hwasan] Add __hwasan_record_frame_record to the hwasan interfaceHwasan includes instructions in the prologue that mix the PC and SP and storeit into the stack ring buffer stored at __hwasan_tls. This is a thread_localglobal exposed from the hwasan runtime. However, if TLS-mechanisms or thehwasan runtime haven't been setup yet, it will be invalid to access __hwasan_tls.This is the case for Fuchsia where we instrument libc, so some functions thatare instrumented but can run before hwasan initialization will incorrectlyaccess this global. Additionally, libc cannot have any TLS variables, so wecannot weakly define __hwasan_tls until the runtime is loaded.A way we can work around this is by moving the instructions into a hwasanfunction that does the store into the ring buffer and creating a weak definitionof that function locally in libc. This way __hwasan_tls will not actually bereferenced. This is not our long-term solution, but this will allow us to rollout hwasan in the meantime.This patch includes:- A new llvm flag for choosing to emit a libcall rather than instructions in the prologue (off by default)- The libcall for storing into the ringbuffer (__hwasan_record_frame_record)Differential Revision: https://reviews.llvm.org/D128387 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Wed, 06 Jul 2022 21:47:43 +0000 leonardchan <leonardchan@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#b458bb8c [hwasan] Display causes in order of probability.A heap or global buffer that is far away from the faulting address isunlikely to be the cause, especially if there is a potentialuse-after-free as well, so we want to show it after the othercauses.Reviewed By: eugenisDifferential Revision: https://reviews.llvm.org/D104781 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Mon, 21 Jun 2021 18:55:31 +0000 Florian Mayer <fmayer@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#0867edfc [HWASan] Add basic stack tagging support for LAM.Adds the basic instrumentation needed for stack tagging.Currently does not support stack short granules or TLS stack histories,since a different code path is followed for the callback instrumentationwe use.We may simply wait to support these two features until we switch toa custom calling convention.Patch By: xiangzhangllvm, morehouseReviewed By: vitalybukaDifferential Revision: https://reviews.llvm.org/D102901 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Fri, 11 Jun 2021 15:19:36 +0000 Matt Morehouse <mascasa@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#772851ca [HWASan] Disable stack, globals and force callbacks for x86_64.Subsequent patches will implement page-aliasing mode for x86_64, whichwill initially only work for the primary heap allocator. We forcecallback instrumentation to simplify the initial aliasingimplementation.Reviewed By: vitalybuka, eugenisDifferential Revision: https://reviews.llvm.org/D98069 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Mon, 22 Mar 2021 15:01:48 +0000 Matt Morehouse <mascasa@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#d11ea651 hwasan: Teach the runtime to identify the local variable being accessed in UAR reports.Each function's PC is recorded in the ring buffer. From there we can accessthe function's local variables and reconstruct the tag of each one with thehelp of the information printed by llvm-symbolizer's new FRAME command. Wecan then find the variable that was likely being accessed by matching thepointer's tag against the reconstructed tag.Differential Revision: https://reviews.llvm.org/D63469llvm-svn: 364607 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Thu, 27 Jun 2019 23:16:13 +0000 Peter Collingbourne <peter@pcc.me.uk> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#360163f6 Fix unsymbolized stack history printing.Summary:When symbols are unavailable, the current code prints sp: ... pc: ... (null) (null)instead of module name + offset.Change the output to include module name and offset, and also to matchthe regular sanitizer stack trace format so that it is recognized bysymbolize.py out of the box.Reviewers: kcc, pccSubscribers: kubamracek, jdoerfert, llvm-commitsTags: #llvmDifferential Revision: https://reviews.llvm.org/D58267llvm-svn: 354157 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Fri, 15 Feb 2019 18:38:23 +0000 Evgeniy Stepanov <eugeni.stepanov@gmail.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#a53bb3ac Fix typo in test cases as well.llvm-svn: 349255 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Sat, 15 Dec 2018 07:08:04 +0000 Peter Collingbourne <peter@pcc.me.uk> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#342ca711 [hwasan] Fix stack-uar.c after rCRT345110Set -fno-discard-value-names so that the frame description string contains the variable name.llvm-svn: 346120 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Mon, 05 Nov 2018 07:16:25 +0000 Fangrui Song <maskray@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#ad11526c [hwasan] when printing a stack-related bugs, also print stack frame descriptions provided by the compilerllvm-svn: 345110 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Wed, 24 Oct 2018 01:35:50 +0000 Kostya Serebryany <kcc@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#3d3d9d69 [hwasan] extend the stack-uar testllvm-svn: 344213 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Thu, 11 Oct 2018 01:05:18 +0000 Kostya Serebryany <kcc@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c#1ee01bbf [hwasan] rename two .cc tests into .cllvm-svn: 341739 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/stack-uar.c Sat, 08 Sep 2018 01:27:10 +0000 Kostya Serebryany <kcc@google.com>