VNX DataMover Panic - 8.1.9.232

Recently we have upgraded one of the VNX 5800 NAS frame code to the current Target version - 8.1.9.232 and since then there was 3 DM panics. Looks like the Target code is not stable. Are you guys facing the same issue ?

Panic header ****

on 3/5/2019

"DART X86_64 panic message: >>PANIC in file: ../strbufs.cxx at line: 1968 :out of msgb "

on 3/7/2019

"DART X86_64 panic message: >>PANIC in file: ../strbufs.cxx at line: 1968 :out of msgb"

on 3/8/2019

DART X86_64 panic message: *** Page Fault Interrupt. Virt ADDRESS: 0x0001566771 Err code: 0 Target addr: 0x0000000018 **

Support is recommending hotfix codes - 8.1.9.23203 or 8.1.9.23204.

Anyone having the similar issues ?