[Bug 263445] [tcp] Fatal trap 12: page fault while in kernel mode // supervisor read data, page not present // 13.1-RC3

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 08 Jun 2022 07:40:10 UTC

--- Comment #21 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:


commit ce2525c8108a830d08d75771621d1bc580edd82c
Author:     Richard Scheffenegger <rscheff@FreeBSD.org>
AuthorDate: 2022-06-08 07:14:16 +0000
Commit:     Richard Scheffenegger <rscheff@FreeBSD.org>
CommitDate: 2022-06-08 07:18:32 +0000

    tcp: remove goto and address another NULL deref in SACK

    Missed another NULL dereference during KASSERTS after traversing
    the scoreboard. While at it, scratch the goto by making the
    traversal conditional, and remove duplicate checks using an
    unconditional loop with all checks inside.

    Reviewed By:    hselasky
    PR:             263445
    MFC after:      1 week
    Sponsored by:   NetApp, Inc.
    Differential Revision: https://reviews.freebsd.org/D35428

 sys/netinet/tcp_sack.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

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