Date: Sat, 21 Oct 2023 14:47:15 GMT From: Zhenlei Huang <zlei@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 5de5f2de6e1d - stable/13 - kasan.9: Mention the loader tunable 'debug.kasan.disable' Message-ID: <202310211447.39LElF1b006022@gitrepo.freebsd.org>
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The branch stable/13 has been updated by zlei: URL: https://cgit.FreeBSD.org/src/commit/?id=5de5f2de6e1d3b40557fea25d14c68135409556d commit 5de5f2de6e1d3b40557fea25d14c68135409556d Author: Zhenlei Huang <zlei@FreeBSD.org> AuthorDate: 2023-10-13 14:42:34 +0000 Commit: Zhenlei Huang <zlei@FreeBSD.org> CommitDate: 2023-10-21 14:45:45 +0000 kasan.9: Mention the loader tunable 'debug.kasan.disable' Reviewed by: markj MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D42165 (cherry picked from commit 2df97575088d2efe71d6ee136a677cf50249f96d) (cherry picked from commit c878532881d639ff50fded05bca37595d8b9d00d) --- share/man/man9/kasan.9 | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/share/man/man9/kasan.9 b/share/man/man9/kasan.9 index 9b13cf28aa59..d196ea6a218b 100644 --- a/share/man/man9/kasan.9 +++ b/share/man/man9/kasan.9 @@ -25,7 +25,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd April 13, 2021 +.Dd October 13, 2023 .Dt KASAN 9 .Os .Sh NAME @@ -84,6 +84,12 @@ sysctl/tunable. .Pp The .Nm +runtime in a KASAN-configured kernel can be disabled by +setting the loader tunable +.Sy debug.kasan.disable=1 . +.Pp +The +.Nm runtime works by maintaining a shadow map for the kernel map. There exists a linear mapping between addresses in the kernel map and addresses in the shadow map.
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