I now know how to trigger it, I use a linux program and press ^C, and for
about each ^C i get a issignal in my msgbuf. I'm still running 1.5ZC.

Love

: root@nutcracker ; ktrace /emul/linux/opt/tivoli/tsm/client/ba/bin/dsmc inc /home
Tivoli Storage Manager
Command Line Backup/Archive Client Interface - Version 5, Release 1, Level 0.0 
(C) Copyright IBM Corporation 1990, 2002 All Rights Reserved.

Node Name: NUTCRACKER.STACKEN.KTH.SE
Session established with server BIGBLUE: AIX-RS/6000
  Server Version 4, Release 2, Level 1.7
  Server date/time: 2002.05.26 18:19:31  Last access: 2002.05.26 18:19:20

^C

>>>>>> Process Interrupted!!  Severing connection. <<<<<<
^C^C^C^C^C^C^C^C^C
: root@nutcracker ; dmesg
[...]
issignal
issignal
issignal
issignal
issignal
issignal
issignal
issignal
issignal
: root@nutcracker ; kdump | grep sigaction\\\|PSIG
 21687 dsmc     CALL  rt_sigaction(0x20,0xbfbfd3ec,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x21,0xbfbfd3fc,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x22,0xbfbfd3ec,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0xd,0xbfbfcbf0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x4,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x8,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x7,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0xb,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0xc,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x6,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     CALL  rt_sigaction(0x5,0xbfbfccc0,0,0x8)
 21687 dsmc     RET   rt_sigaction 0
 21687 dsmc     PSIG  SIGRT0 caught handler=0x482093b0 mask=(33) code=0x0
 21687 dsmc     PSIG  SIGRT0 caught handler=0x482093b0 mask=(33) code=0x0
 21687 dsmc     PSIG  SIGRT0 caught handler=0x482093b0 mask=(33) code=0x0
 21687 dsmc     PSIG  SIGINT caught handler=0x48209af0 mask=(33) code=0x0
 21687 dsmc     PSIG  SIGUSR2 caught handler=0x48209af0 mask=(33) code=0x0
 21687 dsmc     PSIG  SIGRT1 caught handler=0x48209440 mask=(31,33) code=0x0
: root@nutcracker ;