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* Google has been tightening up mutexes by disallowing calling pthread_mutex_destroy on an already destroyed mutex in P * This normally isn't an issue, but Qualcomm, in their infinite wisdom, decided to destroy a mutex in a loop in isp_module_stop_session when they were freeing some related memory allocations * This results in a SIGABRT in mm-qcamera-daemon from a __fortify_fatal call in HandleUsingDestroyedMutex in libc * To work around this, the CBNZ instruction (aka, the break condition) in the loop was moved before the call to phtread_mutex_destroy so that the during the 2nd (and final) iteration of the loop, it exits *before* rather than *after* the calls to pthread_mutex_destroy * ASM instructions: - Before: https://gist.github.com/javelinanddart/9afdc8577134bf8ecd48b15213d66491 - After: https://gist.github.com/javelinanddart/789ba3bde8494ff4ba0b7967c93daa14 Change-Id: I36dfab9f3afb8c9e010da8c6b02c2d9eff856c07 |
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