Date: Sat, 6 Jun 2009 18:20:30 -0400 From: Glen Barber <glen.j.barber@gmail.com> To: stable@freebsd.org Subject: Re: Kernel Debugging Options Message-ID: <4ad871310906061520u11b0dcddt7984c2cd1d41acf0@mail.gmail.com> In-Reply-To: <4ad871310906060620l4ac34881g1ff4946a9bea569@mail.gmail.com> References: <4ad871310906060616u7f162f26h8a3149fbe7e4c273@mail.gmail.com> <4ad871310906060620l4ac34881g1ff4946a9bea569@mail.gmail.com>
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On Sat, Jun 6, 2009 at 9:20 AM, Glen Barber<glen.j.barber@gmail.com> wrote: >> Hello everyone >> >> I have a two-part question: >> >> I have a minimally customized GENERIC kernel, with the only changes bein= g: >> options =A0 =A0 =A0 =A0 KDB >> options =A0 =A0 =A0 =A0 KDB_UNATTENDED >> options =A0 =A0 =A0 =A0 DDB >> >> and 'sysctl debug.debugger_on_panic' shows: >> debug.debugger_on_panic: 0 >> >> However, after a panic loading the vboxdrv.ko module, the machine did >> not reboot automatically after reboot. > > I meant "automatically after panic". =A0It's early, and I am apparently > unable to type a coherent thought... > >> >> Here are my questions: >> 1) =A0Would enabling DDB in the kernel prevent an automatic reboot after= a panic? >> >> 2) =A0Does the debugger wait for XX seconds of console inactivity before >> rebooting? =A0I was under the impression from the handbook that the >> machine would instantly reboot and after dumping the crash to vmcore0. >> =A0Is this assumption incorrect? >> >> Thanks in advance for any input. >> > > Also, if this is helpful, the userland / kernel are from two days ago, r1= 93481: > > FreeBSD orion 7.2-STABLE FreeBSD 7.2-STABLE #0 r193481: Fri Jun =A05 > 01:55:06 EDT 2009 =A0 =A0 root@orion:/usr/obj/usr/src/sys/ORION =A0i386 > Sorry for the noise... Disabling DDB from the kernel corrected the reboot issue. Unless I am misunderstanding how it is worded, it is unclear from the HTML docs that DDB overrides KDB_UNATTENDED. If I am misunderstanding, I apologize, but I'm more curious if I am experiencing unusual behavior with DDB enabled. --=20 Glen Barber http://www.dev-urandom.com http://www.linkedin.com/in/glenjbarber
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