Hi All, Please CC me on responses.
I am working on a SD/MMC Host driver . I am getting kerenl oops after mmc_register_card () is called. i working on LINUX 2.6.22.1 kerenl. What might be the reason for this. I installed the modules in follwing order. I did nothing else after installing the modules. Do i need to run any Hotplug script. 1)insmod mmc_core.ko 2)insmod mmc_block.ko 3)insmod sdcc.ko Thanks in Advance for your help. -- Thanks kiran ============================ Unable to handle kernel NULL pointer dereference at virtual address 00000030 pgd = c0004000 [00000030] *pgd=00000000 Internal error: Oops: 17 [#1] Modules linked in: sdcc mmc_block mmc_core CPU: 0 Not tainted (2.6.22.1-M7200JSDCAALBA____ #1) PC is at create_dir+0x14/0x200 LR is at sysfs_create_dir+0x74/0xa0 pc : [<c00d3054>] lr : [<c00d32b4>] psr: a0000113 sp : c4993e18 ip : c4993e48 fp : c4993e44 r10: c48ac078 r9 : 00000000 r8 : 00000001 r7 : c48ac078 r6 : 00000000 r5 : 00000000 r4 : c4c0311c r3 : c4993e4c r2 : c4c0311c r1 : 00000000 r0 : c4c03118 Flags: NzCv IRQs on FIQs on Mode SVC_32 Segment kernel Control: 00c5387f Table: 14c24008 DAC: 00000017 Process kmmcd (pid: 1054, stack limit = 0xc4992258) Stack: (0xc4993e18 to 0xc4994000) 3e00: 00000002 00000000 3e20: c011a9e8 c4c03118 00000000 00000000 c48ac078 00000001 c4993e64 c4993e48 3e40: c00d32b4 c00d304c c01fe5cc 00000000 00000000 c4c03118 c4993e8c c4993e68 3e60: c011aa4c c00d324c c4c03008 c4c03010 00000000 c48ac078 00000001 00000000 3e80: c4993e9c c4993e90 c011ab34 c011a96c c4993ee4 c4993ea0 c014a8e0 c011ab2c 3ea0: c4c03010 c4c0317c c4c03118 00000001 c48abf70 00000000 c4993edc c4c03008 3ec0: c4c03010 00000000 c48abf68 00000001 00000000 00000000 c4993f0c c4993ee8 3ee0: bf0f8c20 c014a84c 0000a95c c4993ef8 c4c032c4 c4c03008 00000000 c48abf68 3f00: c4993f4c c4993f10 bf0fa15c bf0f8bec 00000000 00000000 03534453 44313238 3f20: 55202732 1a003bd6 00000000 c48abf68 c4993f54 60000013 c48ac27c bf0f7ce0 3f40: c4993f74 c4993f50 bf0f7db0 bf0f9bac c4993f74 00ff8000 c01fe530 c48ac280 3f60: c4a209c8 c4992000 c4993f9c c4993f78 c00567d0 bf0f7cec c4992000 c4a209f8 3f80: c4992000 c4a209c8 00000000 00000000 c4993fd4 c4993fa0 c0057450 c005672c 3fa0: c06e0850 00000000 c06e0740 c005b040 c4993fb0 c4993fb0 00000000 c4992000 3fc0: c4a209c8 c0057360 c4993ff4 c4993fd8 c005aefc c005736c 00000000 00000000 3fe0: 00000000 00000000 00000000 c4993ff8 c0047920 c005aeac 00000000 00000000 Backtrace: [<c00d3040>] (create_dir+0x0/0x200) from [<c00d32b4>] (sysfs_create_dir+0x74/0xa0) r8:00000001 r7:c48ac078 r6:00000000 r5:00000000 r4:c4c03118 [<c00d3240>] (sysfs_create_dir+0x0/0xa0) from [<c011aa4c>] (kobject_shadow_add+0xec/0x1c0) r4:c4c03118 [<c011a960>] (kobject_shadow_add+0x0/0x1c0) from [<c011ab34>] (kobject_add+0x14/0x20) [<c011ab20>] (kobject_add+0x0/0x20) from [<c014a8e0>] (device_add+0xa0/0x5a0) [<c014a840>] (device_add+0x0/0x5a0) from [<bf0f8c20>] (mmc_register_card+0x40/0xa0 [mmc_core]) [<bf0f8be0>] (mmc_register_card+0x0/0xa0 [mmc_core]) from [<bf0fa15c>] (mmc_attach_sd+0x5bc/0x740 [mmc_core]) r7:c48abf68 r6:00000000 r5:c4c03008 r4:c4c032c4 [<bf0f9ba0>] (mmc_attach_sd+0x0/0x740 [mmc_core]) from [<bf0f7db0>] (mmc_rescan+0xd0/0x1a0 [mmc_core]) r8:bf0f7ce0 r7:c48ac27c r6:60000013 r5:c4993f54 r4:c48abf68 [<bf0f7ce0>] (mmc_rescan+0x0/0x1a0 [mmc_core]) from [<c00567d0>] (run_workqueue+0xb0/0x180) r6:c4992000 r5:c4a209c8 r4:c48ac280 [<c0056720>] (run_workqueue+0x0/0x180) from [<c0057450>] (worker_thread+0xf0/0x120) r8:00000000 r7:00000000 r6:c4a209c8 r5:c4992000 r4:c4a209f8 [<c0057360>] (worker_thread+0x0/0x120) from [<c005aefc>] (kthread+0x5c/0xa0) r6:c0057360 r5:c4a209c8 r4:c4992000 [<c005aea0>] (kthread+0x0/0xa0) from [<c0047920>] (do_exit+0x0/0x820) r6:00000000 r5:00000000 r4:00000000 Code: e92dd9f0 e24cb004 e24dd00c e1a04002 (e5912030) ======= -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
