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

Shawn Starr
2001-02-25T01:04:16Z

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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