Kernel oops when using kernel 2.6.16 on I2O system
Problem:
When using the 2.6.16 i2o driver, the kernel will experience an oops similar to the following:
Jul 24 23:43:51 trot kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000004 Jul 24 23:43:51 trot kernel: printing eip: Jul 24 23:43:51 trot kernel: c015fe74 Jul 24 23:43:51 trot kernel: *pde = 36ac3001 Jul 24 23:43:51 trot kernel: Oops: 0000 [#1] Jul 24 23:43:51 trot kernel: SMP Jul 24 23:43:51 trot kernel: last sysfs file: /class/vc/vcsa6/dev Jul 24 23:43:51 trot kernel: Modules linked in: i2o_config ipv6 autofs4 ipt_REJECT xt_state ip_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x _tables dm_mod video button battery ac uhci_hcd e7xxx_edac edac_mc hw_random i2c_i801 i2c_core e1000 bonding floppy ext3 jbd i2o_block i2o_core sd_mod scsi_mod Jul 24 23:43:51 trot kernel: CPU: 0 Jul 24 23:43:51 trot kernel: EIP: 0060:[] Not tainted VLI Jul 24 23:43:51 trot kernel: EFLAGS: 00010046 (2.6.16-1.2096_FC3asl.6smp #1) Jul 24 23:43:51 trot kernel: EIP is at free_block+0x51/0xd4 Jul 24 23:43:51 trot kernel: eax: 00000000 ebx: f1880000 ecx: f1880080 edx: f7fe2248 Jul 24 23:43:51 trot kernel: esi: f7fe2240 edi: c2ffe3c0 ebp: 00000009 esp: f7fefef8 Jul 24 23:43:51 trot kernel: ds: 007b es: 007b ss: 0068 Jul 24 23:43:52 trot kernel: Process events/0 (pid: 8, threadinfo=f7fef000 task=f7e005d0) Jul 24 23:43:52 trot kernel: Stack: <0>0000000b f7f1e6e0 f7f1e6e0 0000000b f7f1e6c0 00000000 c0160620 00000000 Jul 24 23:43:52 trot kernel: c2ffe3c0 c2e23260 f7fdfcd0 f7fe2240 c2ffe3c0 c01606ba 00000000 00000001 Jul 24 23:43:52 trot kernel: c2ffe494 00000006 c2e23260 c2e23264 f7f00140 00000297 c0130ecb 00000000 Jul 24 23:43:52 trot kernel: Call Trace: Jul 24 23:43:52 trot kernel: [ ] drain_array_locked+0x62/0x82 [ ] cache_reap+0x7a/0x196 Jul 24 23:43:52 trot kernel: [ ] run_workqueue+0x7f/0xb4 [ ] cache_reap+0x0/0x196 Jul 24 23:43:52 trot kernel: [ ] worker_thread+0xef/0x121 [ ] default_wake_function+0x0/0xc Jul 24 23:43:52 trot kernel: [ ] default_wake_function+0x0/0xc [ ] worker_thread+0x0/0x121 Jul 24 23:43:52 trot kernel: [ ] kthread+0x73/0x9b [ ] kthread+0x0/0x9b Jul 24 23:43:52 trot kernel: [ ] kernel_thread_helper+0x5/0xb <0>Code: c1 e8 0c 6b c0 28 03 05 10 03 49 c0 8b 58 24 8b 44 24 1c 8b 53 04 8 b b4 87 90 00 00 00 39 1a 74 08 0f 0b a7 00 06 52 31 c0 8b 03 <39> 58 04 74 08 0f 0b a8 00 06 52 31 c0 89 50 04 89 02 c7 43 04
Details:
There is a memory corruption bug in the 2.6.16 i2o driver
Solution:
The kernel should be upgraded to 2.6.17 or higher