Date: Fri, 11 Feb 2005 23:45:35 -0600 From: Jon Noack <noackjr@alumni.rice.edu> To: freebsd-stable@freebsd.org Cc: jroberson@chesapeake.net Subject: Re: panic with ULE+PREEMPTION Message-ID: <420D97FF.90709@alumni.rice.edu> In-Reply-To: <420D8122.8090401@alumni.rice.edu> References: <420D8122.8090401@alumni.rice.edu>
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On 02/11/05 22:08, Jon Noack wrote:
> After the recent discussion on stable@, I decided to try ULE again. When
> attempting to log into Squirrelmail on my RELENG_5 server (sources from
> late Wednesday night), I got the following panic:
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 1; apic id = 01
> fault virtual address = 0x150
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc04e1152
> stack pointer = 0x10:0xe4de1a4c
> frame pointer = 0x10:0xe4de1a70
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, def32 1, gran 1
> processor eflags = resume, IOPL = 0
> current process = 36 (swi1: net)
Got another one:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address = 0x4c
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc04e1094
stack pointer = 0x10:0xeb2bfa3c
frame pointer = 0x10:0xeb2bfa50
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = 302 (named)
(gdb) l *0xc04e1094
0xc04e1094 is in sched_choose (/usr/src/sys/kern/sched_ule.c:1650).
1645 kseq_assign(kseq);
1646 #endif
1647 ke = kseq_choose(kseq);
1648 if (ke) {
1649 #ifdef SMP
1650 if (ke->ke_ksegrp->kg_pri_class == PRI_IDLE)
1651 if (kseq_idled(kseq) == 0)
1652 goto restart;
1653 #endif
1654 kseq_runq_rem(kseq, ke);
Jon
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