Hi, and sorry for my bad english :-( It is possible, from the follow info take from /var/log/message after a system crash, know why my server crash ? --------------------------------- Jan 25 11:18:00 payprox kernel: ------------[ cut here ]------------ Jan 25 11:18:00 payprox kernel: kernel BUG at lib/radix-tree.c:575! Jan 25 11:18:00 payprox kernel: invalid operand: 0000 [#1] Jan 25 11:18:00 payprox kernel: SMP Jan 25 11:18:00 payprox kernel: Modules linked in: ipt_limit loop tun md5 ipv6 autofs4 i2c_dev i2c_core ipt_TOS ipt_MASQUERADE ipt_REDIRECT ipt_REJECT ipt_pkttype ipt_LOG ipt_state ipt_multiport ipt_conntrack iptable_mangle ip_nat_irc ip_nat_tftp ip_nat_ftp iptable_nat ip_conntrack_irc ip_conntrack_tftp ip_conntrack_ftp ip_conntrack iptable_filter ip_tables sunrpc button battery ac uhci_hcd ehci_hcd snd_via82xx snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore r8169 via_rhine mii sk98lin floppy dm_snapshot dm_zero dm_mirror xfs dm_mod sata_via libata i2o_block i2o_core sd_mod scsi_mod Jan 25 11:18:00 payprox kernel: CPU: 1 Jan 25 11:18:00 payprox kernel: EIP: 0060:[<c01b28db>] Not tainted VLI Jan 25 11:18:00 payprox kernel: EFLAGS: 00010046 (2.6.9-1.724_FC3smp) Jan 25 11:18:00 payprox kernel: EIP is at __lookup_tag+0x5e/0x108 Jan 25 11:18:00 payprox kernel: eax: ffffffff ebx: 80000000 ecx: 00000020 edx: 00000000 Jan 25 11:18:00 payprox kernel: esi: c15be900 edi: 01000000 ebp: 00000000 esp: f7c63de8 Jan 25 11:18:00 payprox kernel: ds: 007b es: 007b ss: 0068 Jan 25 11:18:00 payprox kernel: Process pdflush (pid: 47, threadinfo=f7c63000 task=f7c32130) Jan 25 11:18:00 payprox kernel: Stack: 05fffffa f8ae1b04 00000020 00000000 f7c63eac 00000000 0000000e d95dc870 Jan 25 11:18:00 payprox kernel: dc6cc6ac c01b29c2 0000000e f7c63e20 00000000 f7c63eac 00001000 00000000 Jan 25 11:18:00 payprox kernel: d95dc86c f7c63eac f7c63e94 c013a957 0000000e 00000000 f7c63e94 f7c63ea4 Jan 25 11:18:00 payprox kernel: Call Trace: Jan 25 11:18:00 payprox kernel: [<f8ae1b04>] _pagebuf_ioapply+0x288/0x290 [xfs] Jan 25 11:18:00 payprox kernel: [<c01b29c2>] radix_tree_gang_lookup_tag+0x3d/0x53 Jan 25 11:18:00 payprox kernel: [<c013a957>] find_get_pages_tag+0x28/0x66 Jan 25 11:18:00 payprox kernel: [<c0142be3>] pagevec_lookup_tag+0x1b/0x22 Jan 25 11:18:00 payprox kernel: [<c0170b7b>] mpage_writepages+0x2bb/0x314 Jan 25 11:18:00 payprox kernel: [<f8ae6038>] xfs_bdstrat_cb+0x35/0x38 [xfs] Jan 25 11:18:00 payprox kernel: [<f8ae066d>] linvfs_writepage+0x0/0xc6 [xfs] Jan 25 11:18:00 payprox kernel: [<f8add5b9>] xfs_inode_flush+0x1bd/0x1c9 [xfs] Jan 25 11:18:00 payprox kernel: [<c011cac8>] find_busiest_group+0xf1/0x2df Jan 25 11:18:00 payprox kernel: [<c016f3fc>] __sync_single_inode+0x5f/0x1c0 Jan 25 11:18:00 payprox kernel: [<c016f78f>] sync_sb_inodes+0x1a7/0x274 Jan 25 11:18:00 payprox kernel: [<c013f6ec>] pdflush+0x0/0x1e Jan 25 11:18:00 payprox kernel: [<c016f8ed>] writeback_inodes+0x91/0xde Jan 25 11:18:00 payprox kernel: [<c013ee6d>] wb_kupdate+0x7b/0xde Jan 25 11:18:00 payprox kernel: [<c013f658>] __pdflush+0xec/0x180 Jan 25 11:18:00 payprox kernel: [<c013f706>] pdflush+0x1a/0x1e Jan 25 11:18:00 payprox kernel: [<c013edf2>] wb_kupdate+0x0/0xde Jan 25 11:18:00 payprox kernel: [<c013f6ec>] pdflush+0x0/0x1e Jan 25 11:18:00 payprox kernel: [<c0131181>] kthread+0x73/0x9b Jan 25 11:18:00 payprox kernel: [<c013110e>] kthread+0x0/0x9b Jan 25 11:18:00 payprox kernel: [<c01041f1>] kernel_thread_helper+0x5/0xb Jan 25 11:18:00 payprox kernel: Code: 83 e5 3f 89 6c 24 08 83 fd 3f 77 49 8b 54 24 30 8b 4c 24 08 8d 04 d6 0f a3 88 04 01 00 00 19 c0 85 c0 74 11 83 7c 8e 04 00 75 2a <0f> 0b 3f 02 3f 82 2d c0 eb 20 b8 01 00 00 00 0f b6 0c 24 d3 e0 Jan 25 16:22:48 payprox syslogd 1.4.1: restart. ---------- Now, after reboot, I get some of this OOPS...... Is a hardware problem? ----------------------------------------------- Jan 25 17:01:02 payprox kernel: Unable to handle kernel paging request at virtual address 01000004 Jan 25 17:01:02 payprox kernel: printing eip: Jan 25 17:01:02 payprox kernel: c015cf8a Jan 25 17:01:02 payprox kernel: *pde = 2e7ef001 Jan 25 17:01:02 payprox kernel: Oops: 0000 [#5] Jan 25 17:01:02 payprox kernel: SMP Jan 25 17:01:02 payprox kernel: Modules linked in: tun md5 ipv6 autofs4 ipt_TOS ipt_MASQUERADE ipt_REDIRECT ipt_REJECT ipt_pkttype ipt_LOG ipt_limit ipt_state ipt_multiport ipt_conntrack iptable_mangle ip_nat_irc ip_nat_tftp ip_nat_ftp iptable_nat ip_conntrack_irc ip_conntrack_tftp ip_conntrack_ftp ip_conntrack iptable_filter ip_tables sunrpc video button battery ac uhci_hcd ehci_hcd i2c_viapro i2c_core snd_via82xx snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore r8169 via_rhine mii sk98lin floppy dm_snapshot dm_zero dm_mirror xfs dm_mod sata_via libata i2o_block i2o_core sd_mod scsi_mod Jan 25 17:01:02 payprox kernel: CPU: 0 Jan 25 17:01:02 payprox kernel: EIP: 0060:[<c015cf8a>] Not tainted VLI Jan 25 17:01:02 payprox kernel: EFLAGS: 00010206 (2.6.10-1.741_FC3smp) Jan 25 17:01:02 payprox kernel: EIP is at link_path_walk+0x7c5/0xb9c Jan 25 17:01:02 payprox kernel: eax: c196b710 ebx: cbb0569d ecx: 00000000 edx: 01000000 Jan 25 17:01:02 payprox kernel: esi: c1972e50 edi: cbb0569d ebp: edd7af58 esp: edd7aec8 Jan 25 17:01:02 payprox kernel: ds: 007b es: 007b ss: 0068 Jan 25 17:01:02 payprox kernel: Process id (pid: 8018, threadinfo=edd7a000 task=f721e530) Jan 25 17:01:02 payprox kernel: Stack: c01453fb 00000000 ef5c4f28 eee22030 efbaaa6c f7fe8300 00000101 ef63a00c Jan 25 17:01:02 payprox kernel: c1968e00 c196b710 cbb0569d 00000006 ef63a006 00de53a4 edd7a000 edd7af58 Jan 25 17:01:02 payprox kernel: 000001b6 ef63a000 c015d674 ef63a000 00000000 000001b6 edd7af58 c015dcc0 Jan 25 17:01:02 payprox kernel: Call Trace: Jan 25 17:01:02 payprox kernel: [<c01453fb>] handle_mm_fault+0xbd/0x175 Jan 25 17:01:02 payprox kernel: [<c015d674>] path_lookup+0x144/0x174 Jan 25 17:01:02 payprox kernel: [<c015dcc0>] open_namei+0x8d/0x58b Jan 25 17:01:02 payprox kernel: [<c0150f10>] filp_open+0x23/0x3c Jan 25 17:01:02 payprox kernel: [<c01b49c4>] strncpy_from_user+0x37/0x56 Jan 25 17:01:02 payprox kernel: [<c0151228>] sys_open+0x31/0x7d Jan 25 17:01:02 payprox kernel: [<c0103c97>] syscall_call+0x7/0xb Jan 25 17:01:02 payprox kernel: Code: c0 84 c0 74 07 89 d0 e8 a9 b3 00 00 89 1e e9 04 ff ff ff 89 ea 89 f0 e8 00 f7 ff ff e9 9a 03 00 00 8b 45 00 8b 50 48 85 d2 74 17 <8b> 4a 04 85 c9 74 10 8d 54 24 28 ff d1 85 c0 89 c3 0f 88 af 03 ------------------------------ Pleas, help me. Many thanks -- Dario Lesca <d.lesca@xxxxxxxxxx>