Clear all of the VFP state in fill_fpregs().
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Authored by jhb on Sep 12 2018, 9:56 PM.

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imp

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emaste
andrew
manu

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rS338813: Clear all of the VFP state in fill_fpregs().

Summary

Zero the entire FP register set structure returned for ptrace() if a
thread hasn't used FP registers rather than leaking garbage in the
fp_sr and fp_cr fields.

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Buildable 19554
Build 19140: arc lint + arc unit

Event Timeline

jhb created this revision.Sep 12 2018, 9:56 PM

Herald added a reviewer: manu. · View Herald TranscriptSep 12 2018, 9:56 PM

Harbormaster completed remote builds in B19554: Diff 47970.Sep 12 2018, 9:56 PM

andrew accepted this revision.Sep 13 2018, 8:37 PM

This revision is now accepted and ready to land.Sep 13 2018, 8:37 PM

emaste accepted this revision.Sep 13 2018, 8:42 PM

Closed by commit rS338813: Clear all of the VFP state in fill_fpregs(). (authored by jhb). · Explain WhySep 19 2018, 10:54 PM

This revision was automatically updated to reflect the committed changes.

Herald added a subscriber: imp. · View Herald TranscriptSep 19 2018, 10:54 PM

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sys/

arm64/

machdep.c

2 lines

Diff 47970

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sys/arm64/arm64/machdep.c

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Clear all of the VFP state in fill_fpregs().ClosedPublicActions