en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/pthread_create.c#846ec2c3 [HWASan] Ensure RNG is initialized in GenerateRandomTagFixes a CHECK-failure caused by glibc's pthread_getattr_npimplementation calling realloc. Essentially, Thread::GenerateRandomTaggets called during Thread::Init and before Thread::InitRandomState: HWAddressSanitizer: CHECK failed: hwasan_thread.cpp:134 "((random_buffer_)) != (0)" (0x0, 0x0) (tid=314) #0 0x55845475a662 in __hwasan::CheckUnwind() #1 0x558454778797 in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) #2 0x558454766461 in __hwasan::Thread::GenerateRandomTag(unsigned long) #3 0x55845475c58b in __hwasan::HwasanAllocate(__sanitizer::StackTrace*, unsigned long, unsigned long, bool) #4 0x55845475c80a in __hwasan::hwasan_realloc(void*, unsigned long, __sanitizer::StackTrace*) #5 0x5584547608aa in realloc #6 0x7f6f3a3d8c2c in pthread_getattr_np #7 0x5584547790dc in __sanitizer::GetThreadStackTopAndBottom(bool, unsigned long*, unsigned long*) #8 0x558454779651 in __sanitizer::GetThreadStackAndTls(bool, unsigned long*, unsigned long*, unsigned long*, unsigned long*) #9 0x558454761bca in __hwasan::Thread::InitStackAndTls(__hwasan::Thread::InitState const*) #10 0x558454761e5c in __hwasan::HwasanThreadList::CreateCurrentThread(__hwasan::Thread::InitState const*) #11 0x55845476184f in __hwasan_thread_enter #12 0x558454760def in HwasanThreadStartFunc(void*) #13 0x7f6f3a3d6fa2 in start_thread #14 0x7f6f3a15b4ce in __cloneAlso reverts 7a3fb71c3cbdd80666335fa8f6f071b43f0b922a, as it's nowunneeded.Reviewed By: vitalybukaDifferential Revision: https://reviews.llvm.org/D113045 List of files: /llvm-project-15.0.7/compiler-rt/test/hwasan/TestCases/pthread_create.c Tue, 09 Nov 2021 14:52:32 +0000 Matt Morehouse <mascasa@google.com>