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# 847fa84b 31-Jul-2022 Alexey Baturo <space.monkey.delivers@gmail.com>

[RISC-V][HWASAN] Adjust lit test support for RISC-V HWASAN feature

Reviewed by: vitalybuka

Differential Revision: https://reviews.llvm.org/D131344


Revision tags: llvmorg-15.0.0-rc1, llvmorg-16-init, llvmorg-14.0.6, llvmorg-14.0.5, llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3, llvmorg-14.0.0-rc2, llvmorg-14.0.0-rc1, llvmorg-15-init, llvmorg-13.0.1, llvmorg-13.0.1-rc3, llvmorg-13.0.1-rc2, llvmorg-13.0.1-rc1, llvmorg-13.0.0, llvmorg-13.0.0-rc4, llvmorg-13.0.0-rc3, llvmorg-13.0.0-rc2
# 8a570a87 14-Aug-2021 Evgenii Stepanov <eugenis@google.com>

[hwasan] Support malloc in atfork.

Before this change we were locking the StackDepot in the fork()
interceptor. This results in a deadlock when allocator functions are
used in a pthread_atfork() cal

[hwasan] Support malloc in atfork.

Before this change we were locking the StackDepot in the fork()
interceptor. This results in a deadlock when allocator functions are
used in a pthread_atfork() callback.

Instead, set up a pthread_atfork() callback at init that locks/unlocks
both StackDepot and the allocator. Since our callback is set up very
early, the pre-fork callback is executed late, and both post-fork ones
are executed early, which works perfect for us.

Differential Revision: https://reviews.llvm.org/D108063

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