git: 2df97575088d - main - kasan.9: Mention the loader tunable 'debug.kasan.disable'
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Date: Fri, 13 Oct 2023 14:44:26 UTC
The branch main has been updated by zlei:
URL: https://cgit.FreeBSD.org/src/commit/?id=2df97575088d2efe71d6ee136a677cf50249f96d
commit 2df97575088d2efe71d6ee136a677cf50249f96d
Author: Zhenlei Huang <zlei@FreeBSD.org>
AuthorDate: 2023-10-13 14:42:34 +0000
Commit: Zhenlei Huang <zlei@FreeBSD.org>
CommitDate: 2023-10-13 14:42:34 +0000
kasan.9: Mention the loader tunable 'debug.kasan.disable'
Reviewed by: markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D42165
---
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.