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Re: Instabilities with Oct 31 snapshot



On Fri, Dec 03, 1999 at 03:25:56PM +0100, Karsten Patzwaldt wrote:
> I'm experiencing certain instabilities with the new harddisk driver
> included in the Oct 31 snapshot, which is AFAIK the release version.
> 
> The problem normally occurs when the disk is heavily used, that is, when
> I open a bigger eMail-folder (OpenBSD with ~12 MB) or uncompressing a
> bigger tar archive or fetching mail or something like that. I can't see
> whether there are any error messages or if I am thrown into gdb because
> I normally work with X11.

OK, as Niels Provos advised me, I temporarily worked with the console to
get into GDB. Here is what I got:

kernel: page fault trap, code=0
Stopped at _vm_object_page_remove+0x1c: movl 0x10(%ebx),%esi
ddb> kernel: page fault trap, code=0
Faulted in DDB; continuing...
ddb> kernel: page fault trap, code=0
Faulted in DDB; continuing...
ddb> kernel: page fault trap, code=0
Faulted in DDB; continuing...
ddb> trace
_vm_object_page_remove(e03883d4,10f00,117000,1,e0b6e000) at _vm_object_page_remove+0x1c
_vm_map_delete(e0392498,e0b66000,e0b6000,0,e0a5343c) at _vm_map_delete+0xe5
_vm_map_remove(e0392498,e0b66000,e0b6000,e0a9f800,e6626cd8) at _vm_map_remove+0x65
_kmem_free(e0392498,e0b66000,8000,80000000,e0422068) at _kmem_free+0x29
_free(e0b66000,2,e6626d20,e02f46c7) at _free+0xb7
_reallocate_scrollbuffer(e0425128,8,0,e6626d64,75) at _reallocate_scrollbuffer+0x33
_vgapage(5,e0387bec,e6626d90,e0149b19,1) at _vgapage+0x27b
_use_vt_ioctl(5,e0427d78,e6626db0,e02f637d,75) at _use_vt_ioctl+0xa29
_vt_keyapp(e037c26c,e03286ef,800b,e014a16d,e0c15800) at _vt_keyapp+0x7c5
_kbd_code_init1(75,b18b89c0,35ae3,e01af67d) at _kbd_code_init1+0x4b0
_sgetc(1,0,e6626e10,e02f1368,80000000) at _sgetc+0x7ce
_pcmmap(0,0,0,0) at _pcmmap+0x4c
_softclock(e0aa03a0,e0bdda00,e0bdda00,0,460000) at _softclock+0x69
_hardclock(e6626e9c,e0bdda00,e0bdda00,e0328ed7,5305) at _hardclock+0x420
_clockintr(e6626e9c) at _clockintr+0x11
_Xrecurse0() at _Xrecurse0+0x6d
--- interrupt ---
_idle(0,e0bc8b14,e0bdda00,e0bda600,0) at _idle+0x20
bpendtsleep(e042d188,28,e016a925,0) at bpendtsleep
_sched_sync(e0bdda00,0,0,0,0) at _sched_sync+0x12d
_start_update(0) at _start_update+0x14
Bad frame pointer: 0xe0474e88
ddb>

I hope I copied this correctly. BTW, isn't there a better way than using
a pen and a sheet of paper to copy this into a mail? I mean, it took me
quite long to copy it and there are surely some typos or so :(

HTH

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