Date: Mon, 18 Mar 1996 20:40:45 -0500 (EST) From: "Marc G. Fournier" <scrappy@ki.net> To: current@freebsd.org Subject: PR Appendum: ed PANIC Message-ID: <Pine.BSF.3.91.960318203745.29884I-100000@ki.net>
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Hi...
Got a crash again today when I came into the office, on my -current
machine. I submitted a PR for it, but at the time I hadn't had a core file
to work with. After todays, I do, so I tried to "operate" on it, using
what is detailed in the handbook as a guide, only to come up with...which
looks nothing like what I expected, so figure I did something wrong.
I've kept the core file, in case there is something else I should
try to do? Hope this helps some to debug the problem...
Script started on Mon Mar 18 20:23:58 1996
freebsd# cd /usr/debug
freebsd# ls
kernel-sym.0 kernel-sym.1 typescript
freebsd# gdb -k
GDB is free software and you are welcome to distribute copies of it
under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.13 (i386-unknown-freebsd), Copyright 1994 Free Software Foundation, Inc.
(kgdb) symbol-file kernel-sym.1
Reading symbols from kernel-sym.1...done.
(kgdb) exec-file /var/crash/kernel.1
(kgdb) core-file /var/crash/vmcore.1
IdlePTD 20b000
current pcb at 1d8d84
panic: from debugger
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
935 dumppcb.pcb_ptd = rcr3();
(kgdb) where
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
(kgdb) list
930 cngetc();
931 } else {
932 if (howto & RB_DUMP) {
933 if (!cold) {
934 savectx(&dumppcb);
935 dumppcb.pcb_ptd = rcr3();
936 dumpsys();
937 }
938
939 if (PANIC_REBOOT_WAIT_TIME != 0) {
(kgdb) bt
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
(kgdb) up 10
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
935 dumppcb.pcb_ptd = rcr3();
(kgdb) up 10
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
935 dumppcb.pcb_ptd = rcr3();
(kgdb) list
930 cngetc();
931 } else {
932 if (howto & RB_DUMP) {
933 if (!cold) {
934 savectx(&dumppcb);
935 dumppcb.pcb_ptd = rcr3();
936 dumpsys();
937 }
938
939 if (PANIC_REBOOT_WAIT_TIME != 0) {
(kgdb) where
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
(kgdb) quit
freebsd# gdb -k kernel-sym.1 /var/crash/vmcore.1
GDB is free software and you are welcome to distribute copies of it
under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.13 (i386-unknown-freebsd),
Copyright 1994 Free Software Foundation, Inc...
IdlePTD 20b000
current pcb at 1d8d84
panic: from debugger
#0 boot (howto=0) at ../../i386/i386/machdep.c:935
935 dumppcb.pcb_ptd = rcr3();
(kgdb) quit
freebsd# exit
exit
Script done on Mon Mar 18 20:33:05 1996
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