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Fix the OOM handling of page-sized memory allocation - #1219

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Sangho Lee (sangho2) merged 1 commit into
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sanghle/lvbs/allocator-prerequisite
Aug 26, 2026
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Fix the OOM handling of page-sized memory allocation#1219
Sangho Lee (sangho2) merged 1 commit into
mainfrom
sanghle/lvbs/allocator-prerequisite

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@sangho2Sangho Lee (sangho2) commented Aug 21, 2026•
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This PR fixes the out-of-memory (OOM) handling of page-sized memory allocation. Currently, LiteBox's allocator panics when its page-sized memory allocation fails. This prevents us from using fallible APIs like try_reserve which expect the allocator reports OOM by returning null.

@sangho2Sangho Lee (sangho2) mentioned this pull request Aug 21, 2026
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Sangho Lee (sangho2) marked this pull request as ready for review August 21, 2026 02:03
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Sangho Lee (sangho2)force-pushed the sanghle/lvbs/allocator-prerequisite branch from 9cc0c17 to 8aa104fCompareAugust 21, 2026 02:33
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🤖 SemverChecks 🤖 No breaking API changes detected

Note: this does not mean API is unchanged, or even that there are no breaking changes; simply, none of the detections triggered.

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Weidong Cui (wdcui) approved these changes Aug 21, 2026
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LGTM. Thanks.

@wdcuiWeidong Cui (wdcui) mentioned this pull request Aug 21, 2026
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Weidong Cui (wdcui) commented Aug 21, 2026

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Sangho Lee (@sangho2) does it make sense to resolve #1222 at some point?

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Sangho Lee (sangho2) commented Aug 21, 2026•
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Sangho Lee (Sangho Lee (@sangho2)) does it make sense to resolve #1222 at some point?

At some point, SafeZoneAllocator might need to return null when rescue fails. LVBS doesn't go through this path because it doesn't have rescue (no dynamic heap expansion exists). But other general kernel (or user) platforms should consider it.

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Sangho Lee (sangho2) added this pull request to the merge queueAug 26, 2026
Merged via the queue into main with commit 8671b24Aug 26, 2026
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Sangho Lee (sangho2) deleted the sanghle/lvbs/allocator-prerequisite branch August 26, 2026 07:47
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@wdcuiWeidong Cui (wdcui)wdcui approved these changes
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@praveen-pkPraveen K Paladugu (praveen-pk)praveen-pk approved these changes
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