Patch-ID# 103943-01 Keywords: interval msgsnd signal timer msgq deadlocked Synopsis: SunOS 4.1.3_U1: System V deadlocked message queue fix Date: Sep/11/96 Solaris Release: 1.1.1 SunOS Release: 4.1.3_U1 Unbundled Product: Unbundled Release: Relevant Architectures: sparc BugId's fixed with this patch: 1257773 Changes incorporated in this version: Patches accumulated and obsoleted by this patch: Patches which conflict with this patch: Patches required with this patch: Obsoleted by: Files included with this patch: msg.h ipc_msg.o README Problem Description: 1257773 System V msgq code can become deadlocked under extreme load Patch Installation Instructions: 1) As root, make copies of the original files: mv /usr/sys/sys/msg.h /usr/sys/sys/msg.h.FCS mv /usr/include/sys/msg.h /usr/include/sys/msg.h.FCS mv /usr/sys/`arch -k`/OBJ/ipc_msg.o /usr/sys/`arch -k`/OBJ/ipc_msg.o.FCS 2) Install the new files: cp msg.h /usr/sys/sys cp msg.h /usr/include/sys cp `arch -k`/ipc_msg.o /usr/sys/`arch -k`/OBJ 3) Build and install a new kernel. Please refer to the System and Network Administration manual for detailed instructions on building custom kernels.