HI
I am using mbuff driver for my application
and in my applicaytion i am calling 4 times mbuff_alloc() call.
its showing the allocated menmory is 4096, 4096, 106496, 4096 bytes for 4
memory segmnets
proc file system.
I am facing some problems some times,
I am getting the following mentioed error indication__alloc_pages: 3-order
allocation failed.
Could u pls any one tell me what could be the peoblem.
i am thinking that this is because of lack system resores like memory
to allocate
when the mbuff driver is getting called. which internally uses vmalloc()
call
Whether it is correct or not.
pls suggest me any solutuion for this problem.
advance Thanks
chandu
some times i am getting the following messages immediately after i
inserted the module
------------------------------------------
time taken(ns) : -1422669536<3>__alloc_pages: 3-order allocation failed.
__alloc_pages: 3-order allocation failed.
__alloc_pages: 3-order allocation failed.
__alloc_pages: 3-order allocation failed.
__alloc_pages: 3-order allocation failed.
__alloc_pages: 3-order allocation failed.
-----------------------------------------
and if this is the case when i am trying to unload the module
it giving the message ....
------------------------------------------------------
Unable to handle kernel NULL pointer dereference at virtual address 000000c8
printing eip:
c1821608
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c1821608>]
EFLAGS: 00010202
eax: 00000002 ebx: f3898b20 ecx: 10967ba2 edx: 000000bc
esi: 000000bc edi: 00000000 ebp: c0857f78 esp: c0857f6c
ds: 0018 es: 0018 ss: 0018
Process rmmod (pid: 901, stackpage=c0857000)
Stack: c1844000 c1844000 00000000 c0857f84 c184e72a 00000000 c0857f8c
c1850e2a
c0856000 c0117cab c1844000 fffffff0 c0d7d000 c0116fe2 c1844000
00000000
c0856000 00000005 00000001 bfffeacc c0856000 c0109167 bffffc7c
bffffb6c
Call Trace: [<c1844000>] [<c1844000>] [<c184e72a>] [<c1850e2a>] [<c0117cab>]
[<c1844000>] [<c0116fe2>]
[<c1844000>] [<c0109167>]
Code: f0 0f b3 87 c8 00 00 00 b8 01 00 00 00 f0 0f ab 87 c0 00 00
Segmentation fault
[r
---------------------------------------------
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