Fix a use-after-free in swp_pager_meta_free().
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Authored by markj on Nov 7 2018, 7:36 PM.

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alc
kib

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rS340241: Fix a use-after-free in swp_pager_meta_free().

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Buildable 20691
Build 20106: arc lint + arc unit

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markj created this revision.Nov 7 2018, 7:36 PM

Harbormaster completed remote builds in B20691: Diff 50135.Nov 7 2018, 7:36 PM

markj added reviewers: alc, kib.Nov 7 2018, 7:37 PM

I've been running buildworlds with this patch for several hours now without seeing segfaults; I'm pretty sure we can recommit r336984 after this fix. Note that the problem manifests much more easily with INVARIANTS kernels since UMA will trash freed memory.

alc added a subscriber: dougm.Nov 7 2018, 10:42 PM

kib accepted this revision.Nov 7 2018, 10:43 PM

This revision is now accepted and ready to land.Nov 7 2018, 10:43 PM

Closed by commit rS340241: Fix a use-after-free in swp_pager_meta_free(). (authored by markj). · Explain WhyNov 7 2018, 11:28 PM

This revision was automatically updated to reflect the committed changes.

Herald added a subscriber: imp. · View Herald TranscriptNov 7 2018, 11:28 PM