Kernel Bug-Vulnerability-Comment library

rtable

1. 
   
2. static int packet_net_init(struct net *net)
   
3. {
   
4.         rwlock_init(&net->packet.sklist_lock);
   
5.         INIT_HLIST_HEAD(&net->packet.sklist);
   
6. /* .26 */
   
7. #ifdef CONFIG_PROC_FS
   
8.         if (!proc_net_fops_create(net, "packet", 0, &packet_seq_fops))
   
9.                 return -ENOMEM;
   
10. #endif
    
11.         return 0;
    
12. }
    
13. 
    
14. static void packet_net_exit(struct net *net)
    
15. {
    
16. #ifdef CONFIG_PROC_FS
    
17.         proc_net_remove(net, "packet");
    
18. #endif
    
19. }
    

复制代码

rtable

1. 
   
2. /*
   
3. * Initialize the calling CPU's compare interrupt as clockevent device
   
4. *
   
5. * .24.4
   
6. */
   
7. //#ifdef CONFIG_CEVT_R4K
   
8. #if defined(CONFIG_CEVT_R4K) || defined(CONFIG_CPU_XLR)
   
9. extern int mips_clockevent_init(void);
   
10. extern unsigned int __weak get_c0_compare_int(void);
    
11. #else
    
12. static inline int mips_clockevent_init(void)
    
13. {
    
14.         return -ENXIO;
    
15. }
    
16. #endif
    
17. /*
    
18. * Initialize the count register as a clocksource
    
19. *
    
20. * .24.4
    
21. */
    
22. //#ifdef CONFIG_CEVT_R4K
    
23. #if defined(CONFIG_CEVT_R4K) || defined(CONFIG_CPU_XLR)
    
24. extern void init_mips_clocksource(void);
    
25. #else
    
26. static inline void init_mips_clocksource(void) { }
    
27. #endif
    
28. 
    
29. /* all in one, [url]http://kerneltrap.org/mailarchive/linux-kernel/2007/10/9/333124[/url] */
    
30. 
    

复制代码

[ 本帖最后由 rtable 于 2008-9-15 11:54 编辑 ]

rtable

1. 
   
2. int allocate_irqno(void)
   
3. {
   
4.         int irq;
   
5. 
   
6. again:
   
7.         irq = find_first_zero_bit(irq_map, NR_IRQS);
   
8. 
   
9.         if (irq >= NR_IRQS)
   
10.                 return -ENOSPC;
    
11.         //.26 arch/mips/kernel/irq.c
    
12.         // why not with smp_mb__before_clear_bit();
    
13.         if (test_and_set_bit(irq, irq_map))
    
14.                 goto again;
    
15. 
    
16.         return irq;
    
17. }
    

复制代码

rtable

1. 
   
2. void ack_bad_irq(unsigned int irq)
   
3. {
   
4.         smtc_im_ack_irq(irq);
   
5.         //.26 arch/mips/kernel/irq.c
   
6.         //nicer?
   
7.         printk(KERN_INFO "unexpected IRQ # %d\n", irq);
   
8. }
   

复制代码

rtable

1. 
   
2. extern void breakpoint(void);
   
3. extern void set_debug_traps(void);
   
4. //.26 arch/mips/kernel/irq.c
   
5. //nicer?
   
6. static int kgdb_flag = 0;
   

复制代码

rtable

1. 
   
2.         for (i = 0; i < nipi; i++) {
   
3.                 //.26 arch/mips/kernel/smtc.c
   
4.                 //shit, smtc_ipi_enqueue
   
5.                 smtc_ipi_nq(&freeIPIq, pipi);
   
6.                 pipi++;
   
7.         }
   

复制代码

rtable

1. 
   
2.         /* Set up a descriptor, to be delivered either promptly or queued */
   
3.         //.26 arch/mips/kernel/smtc.c
   
4.         //shit, smtc_ipi_dequeue
   
5.         pipi = smtc_ipi_dq(&freeIPIq);
   

复制代码

rtable

1. 
   
2. static struct irqaction irq_ipi =
   
3. {
   
4.         .handler        = ipi_interrupt,
   
5.         //.26 arch/mips/kernel/smtc.c
   
6.         //why u have image?
   
7.         .flags                = IRQF_DISABLED,
   
8.         .name                = "SMTC_IPI",
   
9.         .flags                = IRQF_PERCPU
   
10. };
    

复制代码

rtable

1. 
   
2. static int apply_r_mips_pc16(struct module *me, uint32_t *location, Elf32_Addr v)
   
3. {
   
4.         int rel;
   
5. 
   
6.         rel = (((unsigned int)v - (unsigned int)location));
   
7.         rel >>= 2;        // because the offset is in _instructions_ not bytes.
   
8.         rel -= 1;        // and one instruction less due to the branch delay slot.
   
9. 
   
10.         if ( (rel > 32768) || (rel < -32768) ) {
    
11.                 //.26 arch/mips/kernel/vpe.c
    
12.                 printk(KERN_DEBUG "VPE loader: %s:"
    
13.                         " relative address out of range 0x%x\n", __FUNCTION__, rel);
    
14.                 return -ENOEXEC;
    
15.         }
    
16. 
    
17.         *location = (*location & 0xffff0000) | (rel & 0xffff);
    
18. 
    
19.         return 0;
    
20. }
    

复制代码

rtable

1. 
   
2.         dmt_flag = dmt();
   
3.         vpeflags = dvpe();
   
4. 
   
5.         if (!list_empty(&v->tc)) {
   
6.                 t = list_entry(v->tc.next, struct tc, tc);
   
7.                 if (t == NULL) { //and u??
   
8.                         evpe(vpeflags);
   
9.                         emt(dmt_flag);
   
10.                         local_irq_restore(flags);
    
11. 
    
12.                         printk(KERN_WARNING "VPE loader: TC %d is already in use.\n",
    
13.                                t->index); //.26 what u mean?
    
14.                         return -ENOEXEC;
    
15.                 }
    
16.         } else {
    
17.                 evpe(vpeflags);
    
18.                 emt(dmt_flag);
    
19.                 local_irq_restore(flags);
    
20. 
    
21.                 printk(KERN_WARNING
    
22.                        "VPE loader: No TC's associated with VPE %d\n", v->minor);
    
23.                 return -ENOEXEC;
    
24.         }
    

复制代码