Netfilter in Kernel-Modul bewirkt, dass mein System zum Absturz bringen

Question

ich das Kernel-Modul geschrieben haben, und jedes Mal wenn ich es laden, ist es das gesamte System abstürzt (sogar meine Tastatur-LEDs blinken)

Hier ist der Code von dem, was ich tue:

/* 
    Coder: Adel *. ****** 
    Creation Date: April/5th/2012 
    Last Modification Date: April/6th/2012 
    Purpose: A module to test capturing traffic and just letting it go after knowing if it's an ICMP traffic or not 
    Notes: This modules has always been crashing the kernel I am running it on(it shouldn't), my kernel is 2.6.32-33 (Note by Adel) 
*/ 
#include <linux/module.h>  /* Needed by all modules */ 
#include <linux/kernel.h>  /* Needed for KERN_INFO */ 
#include <linux/init.h>   /* Needed for the macros */ 

#include <linux/netfilter.h> 
#include <linux/netfilter_ipv4.h> 

#include <linux/skbuff.h>  /* For the sk_buff struct, which is the struct that contains EVERYTHING in a network packet */ 
#include <linux/ip.h>     /* For IP header */ 
#include <linux/icmp.h>   /* For ICMP Header */ 

#include <linux/in.h> /* For the IPPROTO_ICMP enum */ 

/* This is the structure we shall use to register our function */ 
static struct nf_hook_ops nfho; 

/* This is the hook function itself */ 
unsigned int hook_func(unsigned int hooknum, 
         struct sk_buff **skb, 
         const struct net_device *in, 
         const struct net_device *out, 
         int (*okfn)(struct sk_buff *)) 
{ 
    struct sk_buff *sb = *skb; 
    struct iphdr* iph; 
    struct icmphdr *icmph; 
    iph = ip_hdr(sb); 
    if(sb == NULL) 
     return NF_ACCEPT; 
    if(iph != NULL){ 
     printk(KERN_DEBUG"IP header is not null\n"); 
     if(iph->protocol == IPPROTO_ICMP){ 
      icmph = icmp_hdr(sb); 
      if(icmph != NULL){ 
       printk(KERN_DEBUG"ICMP header is not null\n"); 
       return NF_ACCEPT; 
      }/* If ICMP not null */ 
      return NF_ACCEPT; 
     }/* if IPPROTO_ICMP */ 
     return NF_ACCEPT; 
    } 
    return NF_DROP;/* The packet is NULL */ 
} 


static int __init hello_start(void) 
{ 
    printk(KERN_INFO "Loading Test module...\n"); 
    printk(KERN_ALERT "Hello world\n"); 
    /* Fill in our hook structure */ 
     nfho.hook = hook_func;   /* Handler function */ 
     nfho.hooknum = NF_INET_POST_ROUTING; /* POST_ROUTING Traffic before it hits the wire */ 
     nfho.pf  = PF_INET; 
     nfho.priority = NF_IP_PRI_FIRST; /* Make our function first */ 

     nf_register_hook(&nfho); 
    return 0; 
} 

static void __exit hello_end(void) 
{ 
    nf_unregister_hook(&nfho); 
    printk(KERN_ALERT "Goodbye Mr.\n"); 
} 

module_init(hello_start); 
module_exit(hello_end); 

Wie Sie sehen können, bin ich der Erfassung der Verkehrsrecht, bevor es das NIC (oder?) geht, zu überprüfen, ob es ICMP und Druck ist, das ist alles.
Was könnte der Fehler hier sein?

Beachten Sie, dass ich bin mit diesem Code auf Ubuntu 10.04 LTS und den Kernel 2.6.32-33

Dieser Teil der Kernel-Log-Datei, die ich zu sehen bekommen, wenn der Absturz passiert

Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350142] Modules linked in: myModule(P) hid_a4tech binfmt_misc rfcomm ppdev sco bridge stp bnep l2cap joydev fbcon tileblit font bitblit softcursor vga16fb vgastate snd_hda_codec_realtek pcmcia snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi arc4 snd_rawmidi snd_seq_midi_event snd_seq radeon iwlagn snd_timer iwlcore ttm drm_kms_helper snd_seq_device tifm_7xx1 yenta_socket mac80211 led_class psmouse uvcvideo sony_laptop btusb bluetooth tifm_core rsrc_nonstatic videodev v4l1_compat v4l2_compat_ioctl32 snd video output pcmcia_core serio_raw cfg80211 intel_agp drm i2c_algo_bit soundcore snd_page_alloc lp parport usbhid hid ohci1394 ieee1394 r8169 mii [last unloaded: myModule] 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350193] Pid: 1545, comm: clock-applet Tainted: P M D 2.6.32-33-generiC#70-Ubuntu VGN-CR31Z_R 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350196] RIP: 0010:[<ffffffffa045a00c>] [<ffffffffa045a00c>] hook_func+0xc/0x38 [myModule] 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350200] RSP: 0018:ffff88012ab87a88 EFLAGS: 00010246 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350202] RAX: ffffffffa045a360 RBX: ffff88012ab87b10 RCX: ffff88012c5c0000 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350203] RDX: 0000000000000000 RSI: ffff880138c4bee8 RDI: 0000000000000003 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350205] RBP: ffff88012ab87a88 R08: ffffffff81491b20 R09: ffff88012ab87b10 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350207] R10: 0000000000000000 R11: 0000000000000003 R12: 0000000080000000 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350209] R13: ffffffff81831070 R14: ffff880138c4bee8 R15: 0000000000000003 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350212] FS: 00007f81d59b5800(0000) GS:ffff880028300000(0000) knlGS:0000000000000000 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350214] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350216] CR2: 00000000000000c0 CR3: 000000012c25f000 CR4: 00000000000006e0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350218] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350220] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350222] Process clock-applet (pid: 1545, threadinfo ffff88012ab86000, task ffff88012c4a0000) 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350226] ffff88012ab87ad8 ffffffff81486f1c ffff88012c5c0000 0000000000000000 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350229] <0> ffff88012ab87ac8 ffffffff81491b20 0000000000000003 ffff880138c4bee8 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350233] <0> 0000000000000000 ffff88012c5c0000 ffff88012ab87b48 ffffffff81486fd4 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350243] [<ffffffff81486f1c>] nf_iterate+0x6c/0xb0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350247] [<ffffffff81491b20>] ? dst_output+0x0/0x20 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350250] [<ffffffff81486fd4>] nf_hook_slow+0x74/0x100 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350253] [<ffffffff81491b20>] ? dst_output+0x0/0x20 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350256] [<ffffffff81493c3f>] __ip_local_out+0x9f/0xb0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350258] [<ffffffff81493c66>] ip_local_out+0x16/0x30 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350261] [<ffffffff814944a0>] ip_queue_xmit+0x190/0x410 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350266] [<ffffffff8105ccc2>] ? default_wake_function+0x12/0x20 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350269] [<ffffffff8105ccb0>] ? default_wake_function+0x0/0x20 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350271] [<ffffffff8105cb2b>] ? try_to_wake_up+0x2fb/0x480 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350276] [<ffffffff815418fe>] ? _spin_lock+0xe/0x20 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350280] [<ffffffff814a8fb1>] tcp_transmit_skb+0x3f1/0x790 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350283] [<ffffffff814ab8a3>] tcp_write_xmit+0x1d3/0x4b0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350286] [<ffffffff814abd10>] __tcp_push_pending_frames+0x30/0xa0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350289] [<ffffffff814abdf2>] tcp_send_fin+0x72/0x1d0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350292] [<ffffffff8149d276>] tcp_close+0x2e6/0x460 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350295] [<ffffffff814bf517>] inet_release+0x47/0x70 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350301] [<ffffffff8144ee29>] sock_release+0x29/0x90 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350304] [<ffffffff8144eea7>] sock_close+0x17/0x30 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350310] [<ffffffff81145b15>] __fput+0xf5/0x210 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350313] [<ffffffff81145c55>] fput+0x25/0x30 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350316] [<ffffffff81141d7d>] filp_close+0x5d/0x90 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350320] [<ffffffff810685ef>] put_files_struct+0x7f/0xf0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350323] [<ffffffff810686b4>] exit_files+0x54/0x70 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350326] [<ffffffff8106ac1b>] do_exit+0x15b/0x390 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350329] [<ffffffff8106aea5>] do_group_exit+0x55/0xd0 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350332] [<ffffffff8106af37>] sys_exit_group+0x17/0x20 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350336] [<ffffffff810121b2>] system_call_fastpath+0x16/0x1b 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350356] RSP <ffff88012ab87a88> 
Apr 5 23:21:27 DHS-CYB1022 kernel: [ 2754.350360] ---[ end trace ee59092f1ae9cbf0 ]--- 
Apr 5 23:21:37 DHS-CYB1022 kernel: Kernel logging (proc) stopped. 

EDIT: Bitte Leute, entschuldige meine Unwissenheit und korrigiere mich Wenn ich etwas falsches erwähnt habe, bin ich fast völlig neu.

Answer 1

Sie scheinen die vom Compiler ausgegebenen Warnungen vollständig ignoriert zu haben. Zum einen stimmt Ihre Funktionssignatur nicht mit derjenigen überein, die für NF-Hooks für 2.6.32 erforderlich ist.