Drew Stratford 5efbb4ae95 Kernel: Fix bug in Thread::dispatch_signal(). ...

dispatch_signal() expected a RegisterDump on the kernel stack. However
in certain cases, like just after a clone, this was not the case and
dispatch_signal() would instead write to an incorrect user stack pointer.

We now use the threads TSS in situations where the RegisterDump may not
be valid, fixing the issue.

2019-11-04 10:12:59 +01:00

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