Differential D19220

Still a memory corruption bug in vdev_read in loader ZFS support
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Authored by pkelsey on Feb 17 2019, 4:16 AM.

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delphij

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allanjude
imp
tsoome

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rS344234: It turns out r344226 narrowed the overrun bug but did not eliminate it entirely

Summary

D19140 didn't quite expunge the memory corruption bug in vdev_read() in zfs.c. In that fix, the single-sector case with non-zero tail would overrun the output buffer by the tail size.

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rS FreeBSD src repository - subversion

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Event Timeline

pkelsey created this revision.Feb 17 2019, 4:16 AM

Herald added a subscriber: delphij. · View Herald TranscriptFeb 17 2019, 4:16 AM

tsoome accepted this revision.Feb 17 2019, 7:02 AM

This revision is now accepted and ready to land.Feb 17 2019, 7:02 AM

pkelsey retitled this revision from Still a memory corruption bug in vdev_readin loader ZFS support to Still a memory corruption bug in vdev_read in loader ZFS support.Feb 17 2019, 4:27 PM

allanjude accepted this revision.Feb 17 2019, 5:32 PM

Closed by commit rS344234: It turns out r344226 narrowed the overrun bug but did not eliminate it entirely (authored by pkelsey). · Explain WhyFeb 17 2019, 5:47 PM

This revision was automatically updated to reflect the committed changes.