The branch main has been updated by arichardson:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=1a3a57d74590bb44e96629aec35897b475bd69fa

commit 1a3a57d74590bb44e96629aec35897b475bd69fa
Author:     Alex Richardson <[email protected]>
AuthorDate: 2021-06-16 15:28:27 +0000
Commit:     Alex Richardson <[email protected]>
CommitDate: 2021-06-16 15:28:27 +0000

    kdump: use VIS_NOLOCALE when printing output
    
    Attempting to parse the output as UTF-8 exposed an out-of-bounds read
    in vis(3) (see https://reviews.freebsd.org/D30771). However, I don't
    think it makes much sense to decode this output at all. Additionally,
    passing one byte at a time will almost certainly result in incorrect
    output for multi-byte characters.
    
    Reviewed By:    brooks
    MFC after:      3 days
    Differential Revision: https://reviews.freebsd.org/D30772
---
 usr.bin/kdump/kdump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.bin/kdump/kdump.c b/usr.bin/kdump/kdump.c
index 05988f43133e..d863fffea774 100644
--- a/usr.bin/kdump/kdump.c
+++ b/usr.bin/kdump/kdump.c
@@ -1638,7 +1638,7 @@ visdump(char *dp, int datalen, int screenwidth)
        printf("       \"");
        col = 8;
        for (;datalen > 0; datalen--, dp++) {
-                vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
+               vis(visbuf, *dp, VIS_CSTYLE | VIS_NOLOCALE, *(dp+1));
                cp = visbuf;
                /*
                 * Keep track of printables and
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