[Bug 254333] [tcp] sysctl net.inet.tcp.hostcache.list hangs

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254333

--- Comment #42 from commit-hook at FreeBSD.org ---
A commit in branch stable/11 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=d20563819b9292ddcd42caf3449636b84825b1d6

commit d20563819b9292ddcd42caf3449636b84825b1d6
Author:     Richard Scheffenegger <rscheff at FreeBSD.org>
AuthorDate: 2021-03-31 17:30:20 +0000
Commit:     Richard Scheffenegger <rscheff at FreeBSD.org>
CommitDate: 2021-04-16 21:33:31 +0000

    tcp: Make hostcache.cache_count MPSAFE  by using a counter_u64_t

    Addressing the underlying root cause for cache_count to
    show unexpectedly high  values, by protecting all arithmetic on
    that global variable by using counter(9).

    PR:             254333
    Reviewed By: tuexen, #transport
    MFC after: 2 weeks
    Sponsored by: NetApp, Inc.
    Differential Revision: https://reviews.freebsd.org/D29510

    (cherry picked from commit 95e56d31e348594973affd0ea81d8f8383bc3031)

 sys/netinet/tcp_hostcache.c | 20 ++++++++++++--------
 sys/netinet/tcp_hostcache.h | 20 ++++++++++----------
 2 files changed, 22 insertions(+), 18 deletions(-)

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