Date: Thu, 8 May 2003 22:38:56 +0200 From: "Niels Chr. Bank-Pedersen" <ncbp@bank-pedersen.dk> To: ianf@za.uu.net Cc: FreeBSD-current@freebsd.org Subject: Re: ULE panic Message-ID: <20030508203856.GC10296@bank-pedersen.dk> In-Reply-To: <E19Dqke-0009Ny-00@brane.digs.iafrica.com> References: <E19Dqke-0009Ny-00@brane.digs.iafrica.com>
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On Thu, May 08, 2003 at 09:08:20PM +0200, ianf@za.uu.net wrote:
> Hi
>
> After about 2 minutes on my SMP system, I get the following panic.
> Sadly this is the best report I can give because the system wedges
> so solidly it won't even crashdump or drop into the debugger.
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; lapic.id = 00000000
> fault virtual address = 0x38
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc01efc87
> stack pointer = 0x10:0xcd4dec4c
> frame pointer = 0x10:0xcd4dec60
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, def32 1, gran 1
> processor eflags = interrupt enabled, resume, IOPL = 0
> current process = 14 (swi7: tty:sio clock)
> trap number = 12
> panic: page fault
> cpuid = 0; lapic.id = 00000000
> Stack backtrace:
> backtrace(c0338cf2,0,c0329d79,cd4deb3c,c0d1abe0) at backtrace+0x17
> panic(c0329d79,c0348f01,c0d19700,1,1) at panic+0x104
> trap_fatal(cd4dec0c,38,1,0,c0d1abe0) at trap_fatal+0x322
> trap_pfault(cd4dec0c,0,38,cd4debe4,38) at trap_pfault+0x232
> trap(cd4d0018,c01e0010,c3ad0010,c0d1abe0,c038da50) at trap+0x3bd
> calltrap() at calltrap+0x5
> --- trap 0xc, eip = 0xc01efc87, esp = 0xcd4dec4c, ebp = 0xcd4dec60 ---
> sched_choose(c038d3c0,c0d1ce40,0,c0d19658,cd4deccc) at sched_choose+0x77
> choosethread(c0d1abe0,cd4dec90,f3e70ca5,df354cc0,ffc00014) at choosethread+0x35
> mi_switch(c038abc0,0,0,0,c0d195a0) at mi_switch+0x17f
> ithread_loop(c0d18180,cd4ded48,0,0,0) at ithread_loop+0x2c8
> fork_exit(c01c5ca0,c0d18180,cd4ded48) at fork_exit+0xb0
> fork_trampoline() at fork_trampoline+0x1a
> --- trap 0x1, eip = 0, esp = 0xcd4ded7c, ebp = 0 ---
> boot() called on cpu#0
>
> syncing disks, buffers remaining...
Just saw the same while running fsck on the (serial) console
in singleuser:
# mount
/dev/da0s1a on / (ufs, local, noatime, soft-updates)
devfs on /dev (devfs, local)
# mount -u -o ro /
# fsck -y;fsck -y
** /dev/da0s1a
** Last Mounted on /
** Root file system
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
2376 files, 416643 used, 119164 free (1156 frags, 14751 blocks, 0.2% fragmentation)
** /dev/da3s1e
** Last Mounted on /usr
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
45233 files, 871327 used, 200304 free (24568 frags, 21967 blocks, 2.3% fragmentation)
** /dev/da0s1f
** Last Mounted on /var
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
1192 files, 162846 used, 372961 free (545 frags, 46552 blocks, 0.1% fragmentation)
** /dev/ad0s1f
** Last Mounted on /data
** Phase 1 - Check Blocks and Sizes
Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic.id = 00000000
fault virtual address = 0x38
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01e7da7
stack pointer = 0x10:0xdf143c4c
frame pointer = 0x10:0xdf143c60
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 29 (swi0: tty:sio)
kernel: type 12 trap, code=0
Stopped at sched_choose+0x77: movl 0x38(%eax),%eax
db> trace
sched_choose(c03aa8f0,c21af720,0,c6079bf8,df143ccc) at sched_choose+0x77
choosethread(c21ae850,df143ccc,43a5db45,66ccaf8,ffc03014) at choosethread+0x35
mi_switch(c03a7a60,0,0,0,c6079b40) at mi_switch+0x17f
ithread_loop(c610ea80,df143d48,0,0,0) at ithread_loop+0x2c8
fork_exit(c01bd6c0,c610ea80,df143d48) at fork_exit+0xb0
fork_trampoline() at fork_trampoline+0x1a
--- trap 0x1, eip = 0, esp = 0xdf143d7c, ebp = 0 ---
db>
> Ian Freislich
/Niels Chr.
--
Niels Christian Bank-Pedersen, NCB1-RIPE.
"Hey, are any of you guys out there actually *using* RFC 2549?"
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