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Kernel: Add debug logging to learn more about unexpected NP faults

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This commit is contained in:
Andreas Kling 2022-04-04 16:52:32 +02:00
parent 5560d8a25d
commit 9bb45ab3a6
Notes: sideshowbarker 2024-07-17 14:27:07 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/9bb45ab3a6
1 changed files with 6 additions and 0 deletions
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6
Kernel/Memory/Region.cpp
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@ -382,6 +382,12 @@ PageFaultResponse Region::handle_fault(PageFault const& fault)
return PageFaultResponse::Continue;
}
dbgln("BUG! Unexpected NP fault at {}", fault.vaddr());
dbgln(" - Physical page slot pointer: {:p}", page_slot.ptr());
if (page_slot) {
dbgln(" - Physical page: {}", page_slot->paddr());
dbgln(" - Lazy committed: {}", page_slot->is_lazy_committed_page());
dbgln(" - Shared zero: {}", page_slot->is_shared_zero_page());
}
return PageFaultResponse::ShouldCrash;
}
VERIFY(fault.type() == PageFault::Type::ProtectionViolation);