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Differential D22703

uma dbg: catch more corruption with atomics
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Authored by rlibby on Dec 6 2019, 9:49 AM.
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jeff
markj
kib
cem
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rG942951ba46ec: uma dbg: catch more corruption with atomics
Summary

Use atomic testandset and testandclear to catch concurrent double free,
and to reduce the number of atomic operations.

Submitted by: jeff

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 35810
Build 32699: arc lint + arc unit

Event Timeline

rlibby created this revision.Dec 6 2019, 9:49 AM
Harbormaster completed remote builds in B28002: Diff 65305.Dec 6 2019, 9:49 AM
kib accepted this revision.Dec 6 2019, 1:17 PM
This revision is now accepted and ready to land.Dec 6 2019, 1:17 PM
markj accepted this revision.Dec 6 2019, 3:28 PM
cem accepted this revision.Dec 6 2019, 6:06 PM
cem added a parent revision: D22702: bitset: implement BIT_TEST_CLR_ATOMIC & BIT_TEST_SET_ATOMIC.
rlibby mentioned this in D22702: bitset: implement BIT_TEST_CLR_ATOMIC & BIT_TEST_SET_ATOMIC.Dec 7 2019, 5:28 AM
rlibby mentioned this in D22963: Expand generic subword atomic primitives.Feb 5 2020, 7:24 PM
rlibby updated this revision to Diff 81397.Dec 31 2020, 12:49 AM

Rebase, over

This revision now requires review to proceed.Dec 31 2020, 12:49 AM
Herald added a subscriber: imp. · View Herald TranscriptDec 31 2020, 12:49 AM
Harbormaster completed remote builds in B35810: Diff 81397.Dec 31 2020, 12:49 AM
This revision was not accepted when it landed; it landed in state Needs Review.Dec 31 2020, 9:04 PM
Closed by commit rG942951ba46ec: uma dbg: catch more corruption with atomics (authored by rlibby). · Explain Why
This revision was automatically updated to reflect the committed changes.
rlibby added a commit: rG942951ba46ec: uma dbg: catch more corruption with atomics.

Revision Contents
Changeset List

PathSize
sys/
vm/
9 lines

Diff 81397

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sys/vm/uma_core.c

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