kern/69663: ddb's panic comand can not dump

Peter Holm peter at
Tue Jul 27 06:40:22 PDT 2004

>Number:         69663
>Category:       kern
>Synopsis:       ddb's panic comand can not dump
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 27 13:40:22 GMT 2004
>Originator:     Peter Holm
>Release:        FreeBSD 5.2-CURRENT i386
System: FreeBSD current.osted.lan 5.2-CURRENT FreeBSD 5.2-CURRENT #11: Tue Jul 27 13:33:59 CEST 2004 pho at current.osted.lan:/usr/src/sys/i386/compile/PHO i386

When the ddb comand 'panic' is used, the kernel is stuck in
kern/kern_shutdown.c:389 EVENTHANDLER_INVOKE(shutdown_post_sync, howto);
and no dump is generated.

KDB: enter: manual escape to debugger
[thread 100005]
Stopped at      kdb_enter+0x30: movl    %ebp,%esp
db> panic
panic: from debugger
cpuid = 0; 
Uptime: 26s

Call panic from ddb.



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