With kernel 2.6.24.1 BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: f08f50c2 *pde = 00000000 Oops: 0000 [#1] Modules linked in: lirc_serial(F) lirc_dev cls_fw sch_prio sch_htb iptable_nat xt_limit xt_state ipt_REJECT xt_tcpudp ipt_LOG xt_DSCP xt_dscp xt_mark nf_conntrack_ipv4 xt_CONNMARK xt_MARK iptable_mangle iptable_filter ip_tables x_tables nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack ipv6 evdev hostap_pci i2c_viapro hostap via686a ieee80211_crypt ide_cd Pid: 0, comm: swapper Tainted: GF (2.6.24.1 #5) EIP: 0060:[] EFLAGS: 00010297 CPU: 0 EIP is at hostap_80211_rx+0x41d/0xecf [hostap] EAX: eec28460 EBX: 00000000 ECX: eec28444 EDX: 00000000 ESI: efbb8434 EDI: 00000000 EBP: efbb843e ESP: c0419e74 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process swapper (pid: 0, ti=c0418000 task=c03e4300 task.ti=c0418000) Stack: 00000000 00000080 0000004c 00000001 c0419f2c c0419f30 ef3ab760 00000018 00000100 eec28444 00001148 00000040 0000c9c0 00000001 ef8d3370 00002a40 04b1cd93 000a1e00 00001148 013a1148 685b0900 ef8d3000 1f714b23 685b0900 Call Trace: [] hostap_rx_tasklet+0x11f/0x145 [hostap_pci] [] run_timer_softirq+0x11/0x12f [] tasklet_action+0x32/0x52 [] __do_softirq+0x35/0x75 [] do_softirq+0x22/0x26 [] irq_exit+0x29/0x58 [] do_IRQ+0x58/0x6b [] common_interrupt+0x23/0x28 [] mod_sysfs_init+0x17/0x6d [] arch_setup_additional_pages+0x121/0x13a [] acpi_processor_idle+0x244/0x3c4 [] cpu_idle+0x43/0x5d [] start_kernel+0x237/0x23c [] unknown_bootoption+0x0/0x195 ======================= Code: 0a 8b 4c 24 24 8b 59 1c eb 21 83 bb d8 00 00 00 04 75 16 8d 83 dc 00 00 00 b9 06 00 00 00 89 ea e8 0b d1 91 cf 85 c0 74 18 89 fb <8b> 3b 0f 18 07 90 8b 44 24 24 83 c0 1c 39 c3 75 ce e9 44 0a 00 EIP: [] hostap_80211_rx+0x41d/0xecf [hostap] SS:ESP 0068:c0419e74 Kernel panic - not syncing: Fatal exception in interrupt wlan0ap: SW TICK stuck? bits=0x0 EvStat=8001 IntEn=e018