Robin Burchell a648331e26 Kernel: Fix a nasty lock bug with exec() ...

Exec doesn't leave through the syscall handler, so it didn't unlock the
big_lock. This means that reentering can lock it again, and then another
thread could endlessly yield waiting to acquire the lock (futilely).

This fixes AudioServer using 100% CPU.

2019-07-17 14:23:15 +02:00

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