HP-UX Network Server Accelerator HTTP B.11.31.01.03 Release Notes (5900-0837, September 2011)

This behavior has no side effects unless you try to remove the NSA HTTP product while
there is an un-read HTTP GET reply for a local web client. Removing the NSA HTTP
product when the nsamod module is busy will cause the system to reboot.
Workaround
To avoid a system reboot, run the following command after unregistering the NSA HTTP
ports (step 2 of the removal process):
kcmodule nsamod=unused
If the above command successfully completes, you can use swremove to remove the
NSA HTTP product without causing swremove to reboot the system.
If the above kcmodule command is not successful and you still want to remove the NSA
HTTP product, wait until all local web clients have completed their transactions with the
local web servers. Terminate any local web clients that are unable to complete transactions
with local web servers. Repeat the removal procedure.
Problem(QX:QXCR1000912788)
A machine running NSA may panic with the following stack trace:
====================== EVENT ============================
panic+0x410
bad_kern_reference+0xa0
$cold_pfault+0x2c0
vm_hndlr+0xbf0
bubbleup+0x880
+------------- TRAP ----------------------------
| Data Key Miss Fault in KERNEL mode
| IIP=0xe000000185ef1610:1
| IFA=0x14
| p struct save_state 0x95ec431.0x9fffffff7f7e7800
+------------- TRAP ----------------------------
BSP
nsamod:nsamod_rput+0x91
putnext+0x140
mi_set_sth_hiwat+0xb0
tcp_accept+0xd30
tcp_wput+0x1d0
puthere+0x140
tcp_accept+0x1670
tcp_wput+0x1d0
putnext+0x140
nsamod:nsalmod_wput+0x500
putnext+0x140
str_sync_sthinsert_ioctl+0x3a0
streams_ioctl+0x1b0
nsamod:nsa_daemon+0x640
nsamod:nsa_listen+0x3c0
$cold_net_nsa_check_status+0xb0
inet_stream_listen+0x1b0
solisten(inlined)
10 HP-UX Network Server Accelerator HTTP B.11.31.01.03 release notes