Page MenuHomeFreeBSD
Differential D30676

LinuxKPI: fix sg_pcopy_from_buffer()
ClosedPublic
Actions

Authored by bz on Jun 7 2021, 3:16 PM.
Tags
None
Referenced Files
Unknown Object (File)
Fri, May 8, 6:29 AM
Unknown Object (File)
Thu, May 7, 1:36 PM
Unknown Object (File)
Sun, May 3, 5:57 PM
Unknown Object (File)
Tue, Apr 28, 5:27 AM
Unknown Object (File)
Mon, Apr 27, 9:59 PM
Unknown Object (File)
Mon, Apr 27, 1:55 PM
Unknown Object (File)
Tue, Apr 21, 4:23 PM
Unknown Object (File)
Tue, Apr 21, 5:43 AM
View All Files
Subscribers
emaste
imp

Details

Reviewers
• hselasky
Group Reviewers
linuxkpi
Commits
rGd2c8c4d15a6e: LinuxKPI: fix sg_pcopy_from_buffer()
rGedfcdffefc16: LinuxKPI: fix sg_pcopy_from_buffer()
Summary

In sg_pcopy_from_buffer() is an error in that skip can underflow
and lead to bogus page arithmetics which may lead to memory corruption
or more likely panics. Once we found a s/g page to copy into there
is nothing to skip anymore so simply set skip to 0.

Sponsored by: The FreeBSD Foundation
MFC after: 5 days

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Revision Contents
Changeset List

PathSize
sys/
compat/
linuxkpi/
common/
include/
linux/
3 lines

Diff 91072

View Options

sys/compat/linuxkpi/common/include/linux/scatterlist.h

Loading...