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* add collide mode to executorDmitry Vyukov2015-11-061-23/+48
| | | | | In this mode we execute pairs of syscalls concurrently to provoke data races in kernel.
* experimental functionality to impersonate nobody user in executorDmitry Vyukov2015-10-201-1/+27
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* open /proc/cover only once in executorDmitry Vyukov2015-10-201-9/+18
| | | | | | | | | | | First, it is just not necessary to open it multiple times. But more importantly a program can close fds that it previosuly used: r0 = open(...) close(r0) close(r0) and this can close cover fds created in threaded mode.
* deduplicate coverare in executorDmitry Vyukov2015-10-131-2/+23
| | | | | This allows to use larger coverage buffer and not overflow output at the same time.
* initial commitDmitry Vyukov2015-10-121-0/+478