[Bug 289184] lock order reversal between tcphash (tcp_usrreq.c:1529) and in6_ifaddr_lock (in6_src.c:301)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289184

            Bug ID: 289184
           Summary: lock order reversal between tcphash
                    (tcp_usrreq.c:1529) and in6_ifaddr_lock
                    (in6_src.c:301)
           Product: Base System
           Version: 14.3-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: gbe@FreeBSD.org

I see this lock order reversal since a while now on a 15.0-PRERELEASE. It
happens immediately after boot.

lock order reversal:
 1st 0xfffffe00039d6a00 tcphash (tcphash, sleep mutex) @
/storage/freebsd/src/current/sys/netinet/tcp_usrreq.c:1529
 2nd 0xffffffff81edd1d0 in6_ifaddr_lock (in6_ifaddr_lock, rm) @
/storage/freebsd/src/current/sys/netinet6/in6_src.c:301
lock order tcphash -> in6_ifaddr_lock attempted at:
#0 0xffffffff80bff201 at witness_checkorder+0xbe1
#1 0xffffffff80b80f79 at _rm_rlock_debug+0x129
#2 0xffffffff80dd6fe7 at in6_selectsrc+0x447
#3 0xffffffff80dd6b51 at in6_selectsrc_socket+0x41
#4 0xffffffff80dd4641 at in6_pcbconnect+0x291
#5 0xffffffff80db7177 at tcp6_connect+0xb7
#6 0xffffffff80db4af5 at tcp6_usr_connect+0x2f5
#7 0xffffffff80c3fa80 at soconnectat+0xc0
#8 0xffffffff80c47cd1 at kern_connectat+0xe1
#9 0xffffffff80c47bc1 at sys_connect+0x81
#10 0xffffffff810daba1 at amd64_syscall+0x451
#11 0xffffffff810ac4bb at fast_syscall_common+0xf8

System is a virtual machine running under VMWare if that matters.

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