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Fix null deref in contextSwitch().
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dd6706a1a1
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sideshowbarker
2024-07-19 18:46:02 +09:00
Author: https://github.com/awesomekling Commit: https://github.com/SerenityOS/serenity/commit/dd6706a1a1d
1 changed files with 10 additions and 7 deletions
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@ -360,14 +360,17 @@ static bool contextSwitch(Task* t)
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if (current == t)
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return false;
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// If the last task hasn't blocked (still marked as running),
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// mark it as runnable for the next round.
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if (current->state() == Task::Running)
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current->setState(Task::Runnable);
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if (current) {
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// If the last task hasn't blocked (still marked as running),
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// mark it as runnable for the next round.
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if (current->state() == Task::Running)
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current->setState(Task::Runnable);
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bool success = MemoryManager::the().unmapRegionsForTask(*current);
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ASSERT(success);
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success = MemoryManager::the().mapRegionsForTask(*t);
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bool success = MemoryManager::the().unmapRegionsForTask(*current);
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ASSERT(success);
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}
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bool success = MemoryManager::the().mapRegionsForTask(*t);
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ASSERT(success);
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current = t;
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