Patch-ID# 100642-01
Keywords: MP TLI hangs panic sbflush data loss
Synopsis: TLI does not send data correctly under MP, it either hangs, panics
	  or losses data
Date: 04/Jun/92

SunOS release: 4.1.2

Unbundled Product: 

Unbundled Release: 

BugId's fixed with this patch: 1090503 1089250

Architectures for which this patch is available: sun4m

Patches which may conflict with this patch: 

Obsoleted by: 4.1.3

Files included with this patch: 

Problem Description: 
Bug 1089250
When running customer's test programs (rcv/send) the rcv side hangs on
an MP system.  This is due to releasing the kernel lock in the
uiomove() at processor interrupt level (PIL) 1 which eventually cause
TLI to receive simutaneously from the same socket on two CPUS.

Bug 1090503
TLI does not send data correctly on Sun-MP. When sending data in 4000 
byte packets some of the data is not received correctly.  It appears that 
data is either missing or inserted in the middle of the transmission.

Install Instructions: 

As root:
# mv /sys/sun4m/OBJ/kern_subr.o /sys/sun4m/OBJ/kern_subr.o.FCS
# cp sun4m/4.1.2/kern_subr.o /sys/sun4m/OBJ/kern_subr.o

A new kernel will need to be built and installed.
Please refer to the system and networking administration manual
for details on building and installing a new kernel