[pso] [PSO][Tema3][Linux] bio_add_page oops

[catalina m]

Buna,
Am urmatoarea secventa de cod:
        bio = bio_alloc(GFP_KERNEL,1);
        if (bio == NULL){
                printk(KERN_ERR "NULL bio\n");
                goto end_error;
        }else{
                printk(KERN_ERR "bio OK\n");
        }

        page =alloc_page(GFP_ATOMIC);
        if (page == NULL){
                printk(KERN_ERR "NULL PAGE!!!\n");
                goto end_error;
        }else
                printk(KERN_ERR "PAGE OK\n");

        bio_add_page(data->bio,page,KERNEL_SECTOR_SIZE,0);

Iar la bio_add_page apare un oops:

bio OK
PAGE OK
BUG: unable to handle kernel NULL pointer dereference at 00000060
IP: [<c01f8c71>] bio_add_page+0x11/0x50
*pdpt = 000000000eb92001 *pde = 0000000000000000
Oops: 0000 [#1] SMP

A mai avut cineva o problema similara sau aveti idee de ce ar putea sa
apara?
Mersi,
Catalina
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