[PATCH] D54889: Fiber support for thread sanitizer

Tue Dec 18 08:26:49 PST 2018

741g added a comment.

https://android-review.googlesource.com/c/platform/external/qemu/+/844675

Latest version of patch doesn't work with QEMU anymore, at least with those annotations. Error log:

qemu_coroutine_new:181:0x7f02938cf700:0x7f029388f7c0 Start new coroutine
on_new_fiber:94:0x7f02938cf700:0x7f029388f7c0 Create new TSAN co fiber. co: 0x7b4400025940 co fiber: 0x7f0292cc0008 caller fiber: 0x7f029388f7c0 
start_switch_fiber:133:0x7f02938cf700:0x7f029388f7c0 Current fiber: 0x7f029388f7c0.
start_switch_fiber:135:0x7f02938cf700:0x7f029388f7c0 Switch to fiber 0x7f0292cc0008
coroutine_trampoline:142:0x7f02938cf700:0x7f0292cc0008 Start trampoline
coroutine_trampoline:157:0x7f02938cf700:0x7f0292cc0008 Current fiber: 0x7f0292cc0008. Set co 0x7b4400025940 to env 0x7b44000259a8
start_switch_fiber:133:0x7f02938cf700:0x7f0292cc0008 Current fiber: 0x7f0292cc0008.
start_switch_fiber:135:0x7f02938cf700:0x7f0292cc0008 Switch to fiber 0x7f029388f7c0
coroutine_trampoline:164:0x7f02938cf700:0x7f029388f7c0 Jump to co 0x7b4400025940 caller fiber 0x7f029388f7c0 env 0x7b4400025940
FATAL: ThreadSanitizer CHECK failed: /usr/local/google/home/lfy/aosp-llvm-toolchain/toolchain/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:531 "((thr->shadow_stack_pos)) >= ((buf->shadow_stack_pos))" (0x60000bbe0078, 0x60000bbe0080)

  #0 __tsan::TsanCheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) /usr/local/google/home/lfy/aosp-llvm-toolchain/toolchain/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_rtl_report.cc:48:25 (qemu-system-x86_64+0x536168)
  #1 __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) /usr/local/google/home/lfy/aosp-llvm-toolchain/toolchain/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_termination.cc:79:5 (qemu-system-x86_64+0x4bcf4f)
  #2 LongJmp(__tsan::ThreadState*, unsigned long*) /usr/local/google/home/lfy/aosp-llvm-toolchain/toolchain/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:531:7 (qemu-system-x86_64+0x4d2311)
  #3 siglongjmp /usr/local/google/home/lfy/aosp-llvm-toolchain/toolchain/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:647:3 (qemu-system-x86_64+0x4d23ce)
  #4 coroutine_trampoline /usr/local/google/home/lfy/emu2/master/external/qemu/objs/../util/coroutine-ucontext.c:165:9 (qemu-system-x86_64+0xb72000)
  #5 <null> <null> (libc.so.6+0x43fcf)

Do you know what I'm doing wrong here?

Repository:
  rCRT Compiler Runtime

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D54889/new/

https://reviews.llvm.org/D54889