2010/5/12 Giovanni Trematerra <giovanni.tremate...@gmail.com>: > On Fri, May 7, 2010 at 8:33 PM, Demelier David <demelier.da...@gmail.com> > wrote: >> Le Vendredi 07 mai 2010 à 18:22 +0200, Giovanni Trematerra a écrit : >>> On Fri, May 7, 2010 at 2:08 PM, Demelier David <demelier.da...@gmail.com> >>> wrote: >>> > Hi, >>> > I noticed that pluggin the AC adaptor when I boot without it does >>> > not >>> > panic. It only panic when removing it. >>> > >>> > Maybe that could help ? >>> > >>> >>> Good to know. The problem lies somewhere when performance state change. >>> In your case it happens when you remove AC adaptor. Let's hope someone on >>> acpi@ ml comes up with a good idea. >>> >> >> Okay so for the moment no change, I'll wait for someone with an idea >> that could solve my problem. For me because the panic only happens when >> changing profile from ac plugged -> ac unplugged (and not the reverse) I >> would think it's a cpu related acpi issue. >> > > I looked deeper and it seems to me that when you unplug the AC > adapter, acpi_cpu_notify calls acpi_cpu_cx_cst that try to allocate a > new cx_ptr->p_lvlx via acpi_PkgGas. > If acpi_PkgGas set cx_ptr->p_lvlx to NULL for any reasons you'll have > the panic that you reported. > A solution would be to set acpi_cpu_hook to NULL so acpi_cpu_idle won't call > it. > I need some time to have a patch because of the possible race between > acpi_cpu_notify and > acpi_cpu_idle during set acpi_cpu_hook to NULL. > if you have time and want panic your system you could try the attached > patch, just to be > sure that we catch it. >
Hi, it paniced today ! I don't know why it randomly panic but it did, the backtrace didn't change. There is a picture about the panic : http://img541.imageshack.us/img541/2773/dsc00388xa.jpg Cheers. -- Demelier David _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
