Re: slab cache problem

"Amit D. Chaudhary" <amit_ml@comcast.net> · Sun, 15 Feb 2004 23:38:39 -0800

Try with SLAB_ATOMIC.

Amit

pankaj chauhan wrote:
hi all, 

i am using linux 2.4.20 ( in RH 9 ).

i have a problem in using slab cache , the story goes
like this :

1. i have a structure  record of 24 bytes, say :

    struct record {

                      some feilds ( total 24 bytes)

                   }

2. i create a slab cache for this record , say
record_cache by using :

  kmem_cache_t *record_cache;

  record_cache = kmem_cache_create("record_cache",

                 sizeof(struct record) , 0 ,

                 SLAB_HWCACHE_ALIGN , NULL,NULL);

3.i allocate a new object from the cache :

   new_rec = 
    ( struct record *)kmem_cache_alloc(record_cache, 
                      SLAB_KERNEL);

HERE the system freezes and i get some messages on

console some of them are :

***

[<c020b490>] ip_rcv_finish [kernel] 
<0> kernel panic : Aii killing interrupt handler 
In interrupt handler not syncing

***

all these operations i am doing in a routine
registered at NF_IP_PRE_ROUTING hook of netfilter
frame work of linux .

plz tell me where i am wrong .

thanx in advance .

Rgds,

Pankaj cahuhan 

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