Hi guys,

Is anyone else having kernel issues with CentOS 5.6? I cant get it stable on as a LAMP platform.

Everything is up-to-date and yet I'm running into major problems. How do I make sense of these kernel errors? Any help will be greatly appreciated, as I'm now had to roll back to an old copy of CentOS to keep my systems stable.

Random Cron:

14857 kernel: Oops: 0003 [#3] 14857 kernel: SMP 14857 kernel: CPU: 0 14857 kernel: EIP is at pgd_free+0x104/0x140 14857 kernel: eax: 00000000 ebx: 00000000 ecx: 00000400 edx: 80000003 14857 kernel: esi: e8caa000 edi: e8caa000 ebp: e8cffd68 esp: e8cffd48 14857 kernel: ds: 007b es: 007b ss: 0069 14857 kernel: Process crond (pid: 2620, threadinfo=e8cfe000 task=e9419550) 14857 kernel: Stack: <0>e8caa000 00000000 00000003 e8ca3c44 e8ca6018 e8c6f740 e8c6f788 e8c6f740 14857 kernel: e8cffd7c c011bd9b e8ca6000 e8c6f788 e8c6f740 e8cffd90 c011be50 e8c6f740 14857 kernel: e8cffde8 00007ff0 e8cffe20 c0170a8a e8c6f740 e8c6f740 c030b547 e8cffdb8 14857 kernel: Call Trace: 14857 kernel: [<c01058bd>] show_stack_log_lvl+0xcd/0x120 14857 kernel: [<c0105abb>] show_registers+0x1ab/0x240 14857 kernel: [<c0105dc1>] die+0x111/0x240 14857 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 14857 kernel: [<c01052ab>] error_code+0x2b/0x30 14857 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 14857 kernel: [<c011be50>] mmput+0x80/0xa0 14857 kernel: [<c0170a8a>] flush_old_exec+0x1ba/0xb30 14857 kernel: [<c0191e1f>] load_elf_binary+0x26f/0x1780 14857 kernel: [<c0171602>] search_binary_handler+0x92/0x240 14857 kernel: [<c0171923>] do_execve+0x173/0x215 14857 kernel: [<c0103892>] sys_execve+0x42/0xa0 14857 kernel: [<c0105119>] syscall_call+0x7/0xb 14857 kernel: Code: e1 0c 25 ff 0f 00 00 09 c1 89 ce 83 ce 01 81 ee 01 00 00 40 31 db 89 5c 24 04 89 f7 89 34 24 e8 53 eb ff ff 31 c0 b9 00 04 00 00 <f3> ab a1 e4 ec 3a c0 89 74 24 04 89 04 24 e8 39 dc 04 00 8b 45

Random while updating a package with yum: 14857 kernel: Oops: 0003 [#4] 14857 kernel: SMP 14857 kernel: CPU: 0 14857 kernel: EIP is at pgd_free+0x104/0x140 14857 kernel: eax: 00000000 ebx: 00000000 ecx: 00000400 edx: 80000002 14857 kernel: esi: e8545000 edi: e8545000 ebp: e8c8bd68 esp: e8c8bd48 14857 kernel: ds: 007b es: 007b ss: 0069 14857 kernel: Process yum (pid: 2721, threadinfo=e8c8a000 task=e9f65550) 14857 kernel: Stack: <0>e8545000 00000000 00000003 e854c1d8 e8546018 e8c6f040 e8c6f088 e8c6f040 14857 kernel: e8c8bd7c c011bd9b e8546000 e8c6f088 e8c6f040 e8c8bd90 c011be50 e8c6f040 14857 kernel: e8c8bde8 00007ff0 e8c8be20 c0170a8a e8c6f040 e8c6f040 c030b547 e8c8bdb8 14857 kernel: Call Trace: 14857 kernel: [<c01058bd>] show_stack_log_lvl+0xcd/0x120 14857 kernel: [<c0105abb>] show_registers+0x1ab/0x240 14857 kernel: [<c0105dc1>] die+0x111/0x240 14857 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 14857 kernel: [<c01052ab>] error_code+0x2b/0x30 14857 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 14857 kernel: [<c011be50>] mmput+0x80/0xa0 14857 kernel: [<c0170a8a>] flush_old_exec+0x1ba/0xb30 14857 kernel: [<c0191e1f>] load_elf_binary+0x26f/0x1780 14857 kernel: [<c0171602>] search_binary_handler+0x92/0x240 14857 kernel: [<c0171923>] do_execve+0x173/0x215 14857 kernel: [<c0103892>] sys_execve+0x42/0xa0 14857 kernel: [<c0105119>] syscall_call+0x7/0xb 14857 kernel: Code: e1 0c 25 ff 0f 00 00 09 c1 89 ce 83 ce 01 81 ee 01 00 00 40 31 db 89 5c 24 04 89 f7 89 34 24 e8 53 eb ff ff 31 c0 b9 00 04 00 00 <f3> ab a1 e4 ec 3a c0 89 74 24 04 89 04 24 e8 39 dc 04 00 8b 45

While serving httpd pages: May 19 12:19:19 ip-10-234-90-180 kernel: Unable to handle kernel paging request at virtual address e6579000 May 19 12:19:19 ip-10-234-90-180 kernel: printing eip: May 19 12:19:19 ip-10-234-90-180 kernel: c01123c4 May 19 12:19:19 ip-10-234-90-180 kernel: 00589000 -> *pde = 00000003:b9f9a027 May 19 12:19:19 ip-10-234-90-180 kernel: 0058a000 -> *pme = 00000003:146e0067 May 19 12:19:19 ip-10-234-90-180 kernel: 005c4000 -> *pte = 80000008:10392063 May 19 12:19:19 ip-10-234-90-180 kernel: Oops: 0003 [#1] May 19 12:19:19 ip-10-234-90-180 kernel: SMP May 19 12:19:19 ip-10-234-90-180 kernel: Modules linked in: fuse dm_mirror dm_multipath dm_mod May 19 12:19:19 ip-10-234-90-180 kernel: CPU: 0 May 19 12:19:19 ip-10-234-90-180 kernel: EIP: 0061:[<c01123c4>] Tainted: GF VLI May 19 12:19:19 ip-10-234-90-180 kernel: EFLAGS: 00010246 (2.6.16-xenU #1) May 19 12:19:19 ip-10-234-90-180 kernel: EIP is at pgd_free+0x104/0x140 May 19 12:19:19 ip-10-234-90-180 kernel: eax: 00000000 ebx: 00000000 ecx: 00000400 edx: 80000008 May 19 12:19:19 ip-10-234-90-180 kernel: esi: e6579000 edi: e6579000 ebp: c2f95f00 esp: c2f95ee0 May 19 12:19:19 ip-10-234-90-180 kernel: ds: 007b es: 007b ss: 0069 May 19 12:19:19 ip-10-234-90-180 kernel: Process httpd (pid: 8267, threadinfo=c2f94000 task=d78a3a70) May 19 12:19:19 ip-10-234-90-180 kernel: Stack: <0>e6579000 00000000 00000003 c2039a1c d75c7018 ed181200 ed181248 d78a3a70 May 19 12:19:19 ip-10-234-90-180 kernel: c2f95f14 c011bd9b d75c7000 ed181248 ed181200 c2f95f28 c011be50 ed181200 May 19 12:19:19 ip-10-234-90-180 kernel: ed181200 ed181234 c2f95f44 c011fdd0 ed181200 ed181200 c2f94000 d78a3a70 May 19 12:19:19 ip-10-234-90-180 kernel: Call Trace: May 19 12:19:19 ip-10-234-90-180 kernel: [<c01058bd>] show_stack_log_lvl+0xcd/0x120 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0105abb>] show_registers+0x1ab/0x240 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0105dc1>] die+0x111/0x240 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01052ab>] error_code+0x2b/0x30 May 19 12:19:19 ip-10-234-90-180 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 May 19 12:19:19 ip-10-234-90-180 kernel: [<c011be50>] mmput+0x80/0xa0 May 19 12:19:19 ip-10-234-90-180 kernel: [<c011fdd0>] exit_mm+0x80/0x100 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0120bc3>] do_exit+0xf3/0x8f0 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01213fb>] do_group_exit+0x3b/0xd0 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01214a5>] sys_exit_group+0x15/0x20 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0105119>] syscall_call+0x7/0xb May 19 12:19:19 ip-10-234-90-180 kernel: Code: e1 0c 25 ff 0f 00 00 09 c1 89 ce 83 ce 01 81 ee 01 00 00 40 31 db 89 5c 24 04 89 f7 89 34 24 e8 53 eb ff ff 31 c0 b9 00 04 00 00 <f3> ab a1 e4 ec 3a c0 89 74 24 04 89 04 24 e8 39 dc 04 00 8b 45 May 19 12:19:19 ip-10-234-90-180 kernel: <1>Fixing recursive fault but reboot is needed!

Thanks, Matt