SysRq : Crashing the web server by request Unable to handle httpd NULL pointer dereference at virtual address 00000000 printing eip: c0233fa7 *pde = 3e9f3067 Oops: 0002 [#1] Modules linked in: md5 ipv6 autofs4 i2c_dev i2c_core sunrpc scsi_dump diskdump dm_mirror dm_mod button battery ac yenta_socket pcmcia_core uhci_hcd ehci_hcd shpchp snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore ipw2200 ieee80211 ieee80211_crypt tg3 floppy ext3 jbd ata_piix libata sd_mod scsi_mod CPU: 0 EIP: 0060:[] Not tainted VLI EFLAGS: 00010246 (2.6.9-22.EL) EIP is at sysrq_handle_crash+0x0/0x8 eax: 00000063 ebx: c0370db4 ecx: 00000000 edx: 00000000 esi: 00000063 edi: 00000000 ebp: 00000000 esp: f7191f60 ds: 007b es: 007b ss: 0068 Process httpd (pid: 2857, threadinfo=f7191000 task=f7b677f0) Stack: c02342d8 c032dc4e c032f105 00000003 00000002 f7b6adc0 00000002 f7191fac c01a8a13 c0362740 c0168205 f7191fac b7de7000 f7b6adc0 fffffff7 b7de7000 f7191000 c01682cf f7191fac 00000000 00000000 00000000 00000001 00000002 Call Trace: [] __handle_sysrq+0x58/0xc6 [] write_sysrq_trigger+0x23/0x29 [] vfs_write+0xb6/0xe2 [] sys_write+0x3c/0x62 [] syscall_call+0x7/0xb Code: 4c 11 42 c0 05 00 00 00 c7 05 50 11 42 c0 2f cc 31 c0 c7 05 54 11 42 c0 00 00 00 00 c7 05 58 11 42 c0 00 00 00 00 e9 e5 0b f0 ff 05 00 00 00 00 00 c3 e9 e1 59 f3 ff e9 1e bc f3 ff 85 d2 89