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POhow do you diagnose a kernel oops?
 

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  1. POhow do you diagnose a kernel oops?
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    <p>Given a linux kernel oops, how do you go about diagnosing the problem? In the output I can see a stack trace which seems to give some clues. Are there any tools that would help find the problem? What basic procedures do you follow to track it down?</p> <pre><code> Unable to handle kernel paging request for data at address 0x33343a31 Faulting instruction address: 0xc50659ec Oops: Kernel access of bad area, sig: 11 [#1] tpsslr3 Modules linked in: datalog(P) manet(P) vnet wlan_wep wlan_scan_sta ath_rate_sample ath_pci wlan ath_hal(P) NIP: c50659ec LR: c5065f04 CTR: c00192e8 REGS: c2aff920 TRAP: 0300 Tainted: P (2.6.25.16-dirty) MSR: 00009032 CR: 22082444 XER: 20000000 DAR: 33343a31, DSISR: 20000000 TASK = c2e6e3f0[1486] 'datalogd' THREAD: c2afe000 GPR00: c5065f04 c2aff9d0 c2e6e3f0 00000000 00000001 00000001 00000000 0000b3f9 GPR08: 3a33340a c5069624 c5068d14 33343a31 82082482 1001f2b4 c1228000 c1230000 GPR16: c60f0000 000004a8 c59abbe6 0000002f c1228360 c340d6b0 c5070000 00000001 GPR24: c2aff9e0 c5070000 00000000 00000000 00000003 c2cc2780 c2affae8 0000000f NIP [c50659ec] mesh_packet_in+0x3d8/0xdac [manet] LR [c5065f04] mesh_packet_in+0x8f0/0xdac [manet] Call Trace: [c2aff9d0] [c5065f04] mesh_packet_in+0x8f0/0xdac [manet] (unreliable) [c2affad0] [c5061ff8] IF_netif_rx+0xa0/0xb0 [manet] [c2affae0] [c01925e4] netif_receive_skb+0x34/0x3c4 [c2affb10] [c60b5f74] netif_receive_skb_debug+0x2c/0x3c [wlan] [c2affb20] [c60bc7a4] ieee80211_deliver_data+0x1b4/0x380 [wlan] [c2affb60] [c60bd420] ieee80211_input+0xab0/0x1bec [wlan] [c2affbf0] [c6105b04] ath_rx_poll+0x884/0xab8 [ath_pci] [c2affc90] [c018ec20] net_rx_action+0xd8/0x1ac [c2affcb0] [c00260b4] __do_softirq+0x7c/0xf4 [c2affce0] [c0005754] do_softirq+0x58/0x5c [c2affcf0] [c0025eb4] irq_exit+0x48/0x58 [c2affd00] [c000627c] do_IRQ+0xa4/0xc4 [c2affd10] [c00106f8] ret_from_except+0x0/0x14 --- Exception: 501 at __delay+0x78/0x98 LR = cfi_amdstd_write_buffers+0x618/0x7ac [c2affdd0] [c0163670] cfi_amdstd_write_buffers+0x504/0x7ac (unreliable) [c2affe50] [c015a2d0] concat_write+0xe4/0x140 [c2affe80] [c0158ff4] part_write+0xd0/0xf0 [c2affe90] [c015bdf0] mtd_write+0x170/0x2a8 [c2affef0] [c0073898] vfs_write+0xcc/0x16c [c2afff10] [c0073f2c] sys_write+0x4c/0x90 [c2afff40] [c0010060] ret_from_syscall+0x0/0x38 --- Exception: c01 at 0xfd98a50 LR = 0x10003840 Instruction dump: 419d02a0 98010009 800100a4 2f800003 419e0508 2f170000 419a0098 3d20c507 a0e1002e 81699624 39299624 7f8b4800 419e007c a0610016 7d264b78 Kernel panic - not syncing: Fatal exception in interrupt Rebooting in 1 seconds.. </code></pre>
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      1. POhow do you diagnose a kernel oops?
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