Date: Wed, 03 Mar 2010 00:10:31 +0900 (JST) From: Kazumaro Aoki <ka@flu.if0.org> To: freebsd-firewire@freebsd.org Subject: Re: reset with fwcontrol -R Message-ID: <20100303.001031.193727057.ka@flu.if0.org> In-Reply-To: <20100207.220956.59557668.ka@flu.if0.org> References: <20100112.001502.164372502.ka@flu.if0.org> <20100117.031442.112571713.ka@flu.if0.org> <20100207.220956.59557668.ka@flu.if0.org>
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Hello, members of freebsd-firewire! From: Kazumaro Aoki <ka@flu.if0.org> Subject: Re: reset with fwcontrol -R Date: Sun, 07 Feb 2010 22:09:56 +0900 (JST) > In recent month, the system is in good condition, but today morning, > system crashed and made a crash dump. (snip) > # kgdb /boot/kernel/kernel vmcore.1 (snip) > Fatal trap 12: page fault while in kernel mode > current process = 42 (fw0_taskq) > panic: page fault (snip) > (kgdb) bt (snip) > #7 0xc05f6d87 in fwohci_task_dma (arg=0xc5662000, pending=1) > at /home/usr/src/sys/dev/firewire/fwohci.c:2206 (snip) I met the similar panic twice, after I saw the above message. First, the crash dump was unfortunately not made. Second, the crash dump was made and kgdb said the same line (FreeBSD7.2R) causes the panic. Now, I configured the kernel and I used the loadable module of firewire. So, I can easy to modify the module and it enables to add to show debug information other than "sysctl debug.firewire_debug=3". I noticed lines 2197-2199 are #if 0 dump_db(sc, dmach); #endif Are the information generated by the commented out the lines useful to analyze the problem? I feel that to start fwcontrol -R when finishing fwcontrol -R just after typing ctrl-c may cause a panic. I will confirm this tomorrow. Best regards, Kazumaro
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