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JustinChi
f371bf2bc4
In regular x86 programs, when a signal occurs, the signal will not be handled within the signal handler. However, under FEX's defer signal mechanism, the signal is not immediately masked when it is deferred. When returning to the location that receives the signal and continues processing, the signal might be received again, causing inconsistency between the emulation and the actual program. Here is an unit test for this patch from ltp: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/timer_settime/timer_settime03.c