Hi all, does any one can help me? Last night apache and mysql just stoped - like freeze. ps ax showed all processes of apache as <defunct>. dmesg showed this: Jul 29 13:52:18 foo Unable to handle kernel NULL pointer dereference at virtual address 00000044 Jul 29 13:52:18 foo printing eip: Jul 29 13:52:18 foo c030eb90 Jul 29 13:52:18 foo *pde = 00000000 Jul 29 13:52:18 foo Oops: 0002 [#1] Jul 29 13:52:18 foo SMP Jul 29 13:52:18 foo Modules linked in: ipt_LOG ipt_conntrack ipt_limit iptable_mangle iptable_nat ip_conntrack iptable_filter ip_tables floppy dm_mirror dm_mod parport_pc parport e100 mii e1000 evdev Jul 29 13:52:18 foo CPU: 0 Jul 29 13:52:18 foo EIP: 0060:[<c030eb90>] Not tainted VLI Jul 29 13:52:18 foo EFLAGS: 00010206 (2.6.12-capsel) Jul 29 13:52:18 foo EIP is at _spin_lock+0x0/0x10 Jul 29 13:52:18 foo eax: 00000044 ebx: f197b840 ecx: f197b5a0 edx: f197b7 4c Jul 29 13:52:18 foo esi: f197b74c edi: 00000044 ebp: 00000001 esp: f7cc3e 94 Jul 29 13:52:18 foo ds: 007b es: 007b ss: 0068 Jul 29 13:52:18 foo Process kswapd0 (pid: 153, threadinfo=f7cc2000 task=c22fba4 0) Jul 29 13:52:18 foo Stack: c015dca6 f197b74c f197b754 f197b74c 00000006 f7cc3ec0 c017671b f197b74c Jul 29 13:52:18 foo cdf04b40 00000000 00000006 f197b908 f197be24 00000087 00000000 00000000 Jul 29 13:52:18 foo c211ea20 c01767ef 00000080 c0146fc5 00000080 000000d0 000274b8 002e1800 Jul 29 13:52:18 foo Call Trace: Jul 29 13:52:18 foo [<c015dca6>] remove_inode_buffers+0x56/0xa0 Jul 29 13:52:18 foo [<c017671b>] prune_icache+0x13b/0x1f0 Jul 29 13:52:18 foo [<c01767ef>] shrink_icache_memory+0x1f/0x50 Jul 29 13:52:18 foo [<c0146fc5>] shrink_slab+0x155/0x190 Jul 29 13:52:18 foo [<c014840f>] balance_pgdat+0x2ff/0x3d0 Jul 29 13:52:18 foo [<c01485c9>] kswapd+0xe9/0x120 Jul 29 13:52:18 foo [<c01303c0>] autoremove_wake_function+0x0/0x60 Jul 29 13:52:18 foo [<c0102d12>] ret_from_fork+0x6/0x14 Jul 29 13:52:18 foo [<c01303c0>] autoremove_wake_function+0x0/0x60 Jul 29 13:52:18 foo [<c01484e0>] kswapd+0x0/0x120 Jul 29 13:52:18 foo [<c0101015>] kernel_thread_helper+0x5/0x10 Jul 29 13:52:18 foo Code: 00 00 01 74 05 e8 21 e3 ff ff c3 ba 00 e0 ff ff 21 e2 81 42 14 00 01 00 00 f0 81 28 00 00 00 01 74 05 e8 04 e3 ff ff c3 8d 76 00 <f0> fe 08 79 09 f3 90 80 38 00 7e f9 eb f2 c3 90 f0 81 28 00 00
After reboot many databases of mysql had to be fixed. After the databases were fixed I tried to rsync all of them to separate disk. After few seconds rsync freezed, so I killed it and started one more time, and it freezed to. After unmounting filesystem I checked it with fsck.reiserfs but there was no errors. Now everything works on 2.4.31-hardened but works terribly slow. Previous kernel was 2.6.12-gentoo-r4. File system for mysql is reiserfs on top of raid0. raid0 was built on two IDE disks about 200GB each. Is it a bug in kernel? Which kernel should I use then? Is there any other fix for this? Few days before everything including ssh froze and only hard reset helped. And next question: Timeout setting on mysql now works. They didn't with 2.6 kernel. Is there solution for this? -- [email protected] mailing list
