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linuxkpi: Fix assertion in `lkpi_vmf_insert_pfn_prot_locked()`
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Authored by dumbbell on Sun, Jul 12, 4:33 PM.

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emaste

imp

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linuxkpi

Summary

Before this change, the assertion would not catch a page index matching the end address, even though the end address of a mapping is outside of that mapping.

While here, add another assertion to catch page indexes outside of the expected range earlier.

Also, pagefaulting an address outside of the mapping range should return VM_FAULT_SIGBUS instead of panicing.

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Event Timeline

dumbbell created this revision.Sun, Jul 12, 4:33 PM

Herald added subscribers: emaste, imp. · View Herald TranscriptSun, Jul 12, 4:33 PM

dumbbell requested review of this revision.Sun, Jul 12, 4:33 PM

dumbbell added a parent revision: D57703: linuxkpi: Define `ULL()`.Sun, Jul 12, 4:36 PM

dumbbell added a child revision: D58195: linuxkpi: Update `struct vm_area_struct` when an existing mapping is extended.

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sys/

compat/

linuxkpi/

common/

src/

linux_compat.c

2 lines

linux_page.c

5 lines

Diff 181842

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sys/compat/linuxkpi/common/src/linux_compat.c