[Bug 259645] crash in_cksumdata (sys/amd64/amd64/in_cksum.c:113) via in4_cksum (sys/netpfil/pf/in4_cksum.c:117) after FreeBSD 13.0 p5 update

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259645

--- Comment #18 from commit-hook@FreeBSD.org ---
A commit in branch stable/13 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=dfd5240189ca024b268e53df2f0a3076df57b240

commit dfd5240189ca024b268e53df2f0a3076df57b240
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2021-11-24 18:19:54 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2021-12-01 12:43:03 +0000

    netinet: Implement in_cksum_skip() using m_apply()

    This allows it to work with unmapped mbufs.  In particular,
    in_cksum_skip() calls no longer need to be preceded by calls to
    mb_unmapped_to_ext() to avoid a page fault.

    PR:             259645
    Reviewed by:    gallatin, glebius, jhb
    Sponsored by:   The FreeBSD Foundation

    (cherry picked from commit 0d9c3423f59bb305301f5a5bc7c8f5daf7b7aa52)

 sys/netinet/in_cksum.c | 63 +++++++++++++++++++++++++-------------------------
 1 file changed, 32 insertions(+), 31 deletions(-)

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