Hi!Couldn't you take a look at kernel stack's trace? (ip_route_input+0x91a/0xcc9)
From: Igor Podlesny <hidden>
Date: 2008-06-10 13:31:23
(2.6.24.7-rt13 works fine) Jun 10 18:49:01 arch [ 56.072421] BUG: unable to handle kernel NULL pointer dereference at 00000019 Jun 10 18:49:01 arch [ 56.072421] IP: [<c0313d75>] ip_route_input+0x91a/0xcc9 Jun 10 18:49:01 arch [ 56.072421] *pde = 00000000 Jun 10 18:49:01 arch [ 56.072421] Oops: 0002 [#1] PREEMPT SMP Jun 10 18:49:01 arch [ 56.072421] Modules linked in: snd_rtctimer rtc ip_queue xt_owner ipt_recent ipt_ttl ipt_addrtype ipt_REJECT iptable_filter ipt_LOG xt_limit xt_DSCP xt_TCPMSS iptable_mangle it87 hwmon_vid hwmon snd_usb_audio snd_usb_lib usbhid hid parport_pc 8250_pnp 8250 serial_core lp ppp_generic parport slhc forcedeth ohci_hcd ehci_hcd i2c_nforce2 fan button fuse via_rhine 3c59x mii tun powernow_k8 thermal processor 8021q tuner tea5767 tda8290 tuner_xc2028 tda9887 tuner_simple mt20xx tea5761 saa7134 videodev v4l1_compat compat_ioctl32 v4l2_common videobuf_dma_sg videobuf_core ir_kbd_i2c ir_common tveeprom i2c_core snd_seq_oss snd_seq_midi_event snd_seq snd_emu10k1 firmware_class snd_util_mem snd_hwdep snd_pcm_oss snd_mixer_oss snd_via82xx snd_ac97_codec ac97_bus snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore loop pcspkr evdev usbcore Jun 10 18:49:01 arch [ 56.072421] Jun 10 18:49:01 arch [ 56.072421] Pid: 8, comm: sirq-net-rx/0 Not tainted (2.6.25.4-rt4aa-gcc43 #1) Jun 10 18:49:01 arch [ 56.072421] EIP: 0060:[<c0313d75>] EFLAGS: 00010202 CPU: 0 Jun 10 18:49:01 arch [ 56.072421] EIP is at ip_route_input+0x91a/0xcc9 Jun 10 18:49:01 arch [ 56.072421] EAX: 00000000 EBX: f5a69e00 ECX: f7477e14 EDX: 00000001 Jun 10 18:49:01 arch [ 56.072421] ESI: 0f6ea8c0 EDI: f7477ea4 EBP: ffffff8f ESP: f7477e38 Jun 10 18:49:01 arch [ 56.072421] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 preempt:00000001 Jun 10 18:49:01 arch [ 56.072421] Process sirq-net-rx/0 (pid: 8, ti=f7476000 task=f746c690 task.ti=f7476000) Jun 10 18:49:01 arch [ 56.072421] Stack: 00000000 016ea8c0 f6e2f180 00000001 c04f1964 00000001 f5a69e00 016ea8c0 Jun 10 18:49:01 arch [ 56.072421] 00000000 00000000 c04851cc f786d640 00000000 00000006 00000000 016ea8c0 Jun 10 18:49:01 arch [ 56.072421] 0f6ea8c0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Jun 10 18:49:01 arch [ 56.072421] Call Trace: Jun 10 18:49:01 arch [ 56.072421] [<c024d578>] __next_cpu+0x12/0x21 Jun 10 18:49:01 arch [ 56.072421] [<c0333ee8>] arp_process+0x1fe/0x5fe Jun 10 18:49:01 arch [ 56.072421] [<c01277f5>] wake_up_process+0xe/0x10 Jun 10 18:49:01 arch [ 56.072421] [<c0172e80>] __kmalloc+0x97/0xcb Jun 10 18:49:01 arch [ 56.072421] [<c02f16be>] __alloc_skb+0x45/0xf2 Jun 10 18:49:01 arch [ 56.072421] [<c02f58da>] netif_receive_skb+0x2dd/0x30b Jun 10 18:49:01 arch [ 56.072421] [<c02f5975>] process_backlog+0x6d/0xc1 Jun 10 18:49:01 arch [ 56.072421] [<c02f46a3>] net_rx_action+0x65/0x14c Jun 10 18:49:01 arch [ 56.072421] [<c01304dd>] ksoftirqd+0x138/0x214 Jun 10 18:49:01 arch [ 56.072421] [<c01303a5>] ksoftirqd+0x0/0x214 Jun 10 18:49:01 arch [ 56.072421] [<c013c30e>] kthread+0x38/0x5d Jun 10 18:49:01 arch [ 56.072421] [<c013c2d6>] kthread+0x0/0x5d Jun 10 18:49:01 arch [ 56.072421] [<c0113f3f>] kernel_thread_helper+0x7/0x10 Jun 10 18:49:01 arch [ 56.072421] ======================= Jun 10 18:49:01 arch [ 56.072421] Code: ff ff 8b 5c 24 18 f0 ff 4b 04 0f 94 c0 84 c0 74 07 89 d8 e8 32 1b 02 00 83 7c 24 14 00 0f 84 98 03 00 00 8b 54 24 70 85 d2 74 12 <f0> ff 4a 18 0f 94 c0 84 c0 74 07 89 d0 e8 e7 92 02 00 8b 54 24 Jun 10 18:49:01 arch [ 56.072421] EIP: [<c0313d75>] ip_route_input+0x91a/0xcc9 SS:ESP 0068:f7477e38 Jun 10 18:49:01 arch [ 56.072421] ---[ end trace 0f990b633467f554 ]--- -- End of message. Next message?