Re: [ANOMALIES]: 2.4.2 - __alloc_pages: ksysoops debug info

[Shawn Starr <spstarr@sh0n.net>]

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Ok, I copied the part from kern.log and pasted it into a separate file then ran
ksysoops and it appeared to have worked.

Any more info you need?

Shawn.

Shawn Starr wrote:

> Doing so..., Im not sure hot to use ksymoops or where to get that program.
> I just usually use the sysq and dump but its ugly ;-)
>
> Shawn.
>
> Marcelo Tosatti wrote:
>
> > On Fri, 23 Feb 2001, Shawn Starr wrote:
> >
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 3-order allocation failed.
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 2-order allocation failed.
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 1-order allocation failed.
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 3-order allocation failed.
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 3-order allocation failed.
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 2-order allocation failed.
> > > Feb 23 21:17:47 coredump kernel: __alloc_pages: 1-order allocation failed.
> > >
> > > didnt, work, still causing this..
> >
> > Ok, could you please add a line with "BUG();" after the
> > printk("__alloc_pages: %d-order allocation failed", ..) in mm/page_alloc.c
> > function __alloc_pages() ?
> >
> > This will make you get an oops when an allocation fails and if you decode
> > it (with ksymoops) we can have a pretty useful backtrace to have more clue
> > of what's failing.
> >
> > TIA
>
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ksymoops 2.3.7 on i586 2.4.2.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.2/ (default)
     -m /boot/System.map (specified)

Feb 24 19:57:32 coredump kernel: kernel BUG at page_alloc.c:507!
Feb 24 19:57:32 coredump kernel: invalid operand: 0000
Feb 24 19:57:32 coredump kernel: CPU:    0
Feb 24 19:57:32 coredump kernel: EIP:    0010:[__alloc_pages+761/776]
Feb 24 19:57:32 coredump kernel: EFLAGS: 00013282
Feb 24 19:57:32 coredump kernel: eax: 00000020   ebx: 00000000   ecx: c1ba8000   edx: c025abe8
Feb 24 19:57:32 coredump kernel: esi: c025c000   edi: 00000003   ebp: c1d06000   esp: c1d07d38
Feb 24 19:57:32 coredump kernel: ds: 0018   es: 0018   ss: 0018
Feb 24 19:57:32 coredump kernel: Process cdda2wav (pid: 386, stackpage=c1d07000)
Feb 24 19:57:32 coredump kernel: Stack: c0219a05 c0219b93 000001fb 00000003 00008000 00008000 00000000 00000007
Feb 24 19:57:32 coredump kernel:        00000008 00000000 c025bff4 c0127fe4 c01b5079 c1d07de4 00000000 00000001
Feb 24 19:57:32 coredump kernel:        c1d07de0 00008000 00000007 c01b5142 00008000 00000000 00000001 00000000
Feb 24 19:57:32 coredump kernel: Call Trace: [__get_free_pages+20/36] [sg_low_malloc+305/408] [sg_malloc+98/280] [sg_build_indi+385/440] [sg_build_reserve+37/68] [sg_ioctl+1582/2588] [__get_free_pages+20/36]
Feb 24 19:57:32 coredump kernel: Code: 0f 0b 83 c4 0c 31 c0 5b 5e 5f 5d 83 c4 10 c3 83 fa 09 77 13
Using defaults from ksymoops -t elf32-i386 -a i386

Code;  00000000 Before first symbol
00000000 <_EIP>:
Code;  00000000 Before first symbol
   0:   0f 0b                     ud2a   
Code;  00000002 Before first symbol
   2:   83 c4 0c                  add    $0xc,%esp
Code;  00000005 Before first symbol
   5:   31 c0                     xor    %eax,%eax
Code;  00000007 Before first symbol
   7:   5b                        pop    %ebx
Code;  00000008 Before first symbol
   8:   5e                        pop    %esi
Code;  00000009 Before first symbol
   9:   5f                        pop    %edi
Code;  0000000a Before first symbol
   a:   5d                        pop    %ebp
Code;  0000000b Before first symbol
   b:   83 c4 10                  add    $0x10,%esp
Code;  0000000e Before first symbol
   e:   c3                        ret    
Code;  0000000f Before first symbol
   f:   83 fa 09                  cmp    $0x9,%edx
Code;  00000012 Before first symbol
  12:   77 13                     ja     27 <_EIP+0x27> 00000027 Before first symbol