git: 0e391a3197f5 - main - ktls: Add missing NULL pointer check for TLS RX hardware offload.

[Hans Petter Selasky]

The branch main has been updated by hselasky:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=0e391a3197f5b4d7a48e26f5cb313548bd663ffc

commit 0e391a3197f5b4d7a48e26f5cb313548bd663ffc
Author:     Hans Petter Selasky <hsela...@freebsd.org>
AuthorDate: 2022-09-06 10:56:19 +0000
Commit:     Hans Petter Selasky <hsela...@freebsd.org>
CommitDate: 2022-09-06 11:49:23 +0000

    ktls: Add missing NULL pointer check for TLS RX hardware offload.
    
    The send tag pointer may be NULL when the ktls_reset_receive_tag()
    function is invoked. Add check for this.
    
    Reviewed by:    gallatin @
    Sponsored by:   NVIDIA Networking
---
 sys/kern/uipc_ktls.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/kern/uipc_ktls.c b/sys/kern/uipc_ktls.c
index ff20b3652407..bf91b774c0dc 100644
--- a/sys/kern/uipc_ktls.c
+++ b/sys/kern/uipc_ktls.c
@@ -1631,8 +1631,10 @@ ktls_reset_receive_tag(void *context, int pending)
        }
 
        SOCKBUF_LOCK(&so->so_rcv);
-       m_snd_tag_rele(tls->snd_tag);
+       mst = tls->snd_tag;
        tls->snd_tag = NULL;
+       if (mst != NULL)
+               m_snd_tag_rele(mst);
 
        ifp = tls->rx_ifp;
        if_ref(ifp);