[Bug 276761] panic: sbsndptr_noadv: sb_mb is NULL

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276761

--- Comment #6 from Daniel <ddaniel@nvidia.com> ---
Hi 

I was able to reproduce the bug by running the following test in a loop ~20
times


test flow (ran it ~20 times till reproduced):

  run in loop 8 esp\IKE alg (twice):
      1. set IPsec configuration
      2. start ipsec - ipsec start
      3. send IPerf stress traffic ~10 sec
         iperf params: -P 100 -t 20 --format g -p 17123

      4. stop iperf traffic
         stop iperf traffic after ~10 sec -  killall iperf

      5. stop ipsec  - ipsec stop
      6. change IKE and esp alg
      7. return to stage 1.

IKE and ESP algorithms I am running in a loop
  1. aes256-sha2_256-modp1024!
  2. aes256-sha256-modp4096
  3. aes256gcm16-prfsha384-ecp384
  4. aes256gcm16-sha256-modp1024
  5. aes128-sha2_256-modp1024!
  6. aes128gcm16-prfsha256-ecp256
  7. aes128-sha256-ecp256
  8. aes128gcm16-sha256-modp1024


IPSEC version
FreeBSD strongSwan U5.9.10/K15.0-CURRENT

iperf version: 2.1.9

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