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Sat, 21 Oct 2023 14:42:55 GMT (envelope-from git) Date: Sat, 21 Oct 2023 14:42:55 GMT Message-Id: <202310211442.39LEgtSY004639@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Zhenlei Huang Subject: git: c878532881d6 - stable/14 - kasan.9: Mention the loader tunable 'debug.kasan.disable' List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: zlei X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: c878532881d639ff50fded05bca37595d8b9d00d Auto-Submitted: auto-generated The branch stable/14 has been updated by zlei: URL: https://cgit.FreeBSD.org/src/commit/?id=c878532881d639ff50fded05bca37595d8b9d00d commit c878532881d639ff50fded05bca37595d8b9d00d Author: Zhenlei Huang AuthorDate: 2023-10-13 14:42:34 +0000 Commit: Zhenlei Huang CommitDate: 2023-10-21 14:41:09 +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) --- 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 1db6e187da46..209fbb06506c 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 March 23, 2023 +.Dd October 13, 2023 .Dt KASAN 9 .Os .Sh NAME @@ -90,6 +90,12 @@ 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.