Analysis using adb

Let's jump into adb and find out what instruction caused the bad trap type 2. We will do this on a SPARCstation 20, a sun4m system as is the customer's SPARCstation 10. The SS20 is running Solaris 2.3. Underlined bits show you the information we used in some of the adb commands. Again, some of the adb output has been modified in accordance with the customer's wishes.

 Hiya...  adb -k unix.0 vmcore.0  physmem 3e15  $<utsname  utsname:  utsname:        sys     SunOS  utsname+0x101:  node    anonymous  utsname+0x202:  release 5.3  utsname+0x303:  version Generic_101318-41  utsname+0x404:  machine sun4m  time/Y  time:  time:           1994 Jan 18 17:00:00  *time-(*lbolt%0t100)=Y  1994 Jan 16 19:50:45  $c  complete_panic(0xf0049460,0xf0ac94a4,0xf0ac9330,0x0,0x0,0x1) + 10c  do_panic(?) + 1c  vcmn_err(0xf015f608,0xf0ac94a4,0xf0ac94a4,0x80,0xffee2000,0x3)  cmn_err(0x3,0xf015f608,0x0,0x18,0x18,0xf0152400) + 1c  die(0x2,0xf0ac95bc,0x0,0x0,0x0,0xf015f608) + 78  trap(0x2,  0xf0ac95bc  ,0xf0181d80,0x0,0x0,0x0) + ca0  sys_trap(?) + 1e4  mutex_exit(0x0,0x0,0xe26310ff,0x1,0x0,0x0)  mod_hold_stub(0xfc61607c,0x80,0xfc6ca580,0x1,0x19f8309,0xfc61607c) + 26c  0xf0ac95bc$<regs  0xf0ac95bc:     psr             pc              npc                  404000c4  fc69d458  fc69d4bc  0xf0ac95c8:     y               g1              g2              g3                  0               fc69d440        8000000         ffffff00  0xf0ac95d8:     g4              g5              g6              g7                  0               f0ac99e0        1               fc4c6200  0xf0ac95e8:     o0              o1              o2              o3                  0               0               e26310ff        1  0xf0ac95f8:     o4              o5              o6              o7                  0               0  f0ac9608  f00e7570  fc69d458/i  ipcaccess+0x18: unimp   0x0  ipcaccess/10i  ipcaccess:  ipcaccess:      save    %sp, -0x60, %sp                  ld      [%i2 + 0x4], %o0                  orcc    %g0, %o0, %g0                  bne,a   ipcaccess + 0x1c                  ld      [%i0], %o2                  ba      ipcaccess + 0x7c  unimp   0x0  cmp     %o0, %o2                  be,a    ipcaccess + 0x6c                  ld      [%i0 + 0x10], %i0  ipcaccess/10X  ipcaccess:  ipcaccess:      9de3bfa0        d006a004        80900008        32800004                  d4060000        1080001a   80a2000a                  22800013        f0062010 

That was easy! The system trapped due to an illegal instruction in the ipcaccess() routine.