Andreas Kling 2839bb0be1 Kernel: Restore the previous thread state on SIGCONT after SIGSTOP ...

When stopping a thread with the SIGSTOP signal, we now store the thread
state in Thread::m_stop_state. That state is then restored on SIGCONT.
This fixes an issue where previously-blocked threads would unblock
upon resume. Now they simply resume in the Blocked state, and it's up
to the regular unblocking mechanism to unblock them.

Fixes #1326.

2020-03-01 15:14:17 +01:00

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