Re: Crash in Kernel 2.6.22.1 after calling mmc_register_card
On Mon, 7 Jan 2008 15:31:32 -0800 "raki john" <[EMAIL PROTECTED]> wrote: > 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. > That's a rather central place for it to crash, so I'm doubtful it's a bug there. I'd guess some kind of memory corruption (an all to easy mistake to make when writing a new driver). Are you using DMA for the controller? If so, try using PIO and see if it stops oopsing. Rgds Pierre signature.asc Description: PGP signature
Crash in Kernel 2.6.22.1 after calling mmc_register_card
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 0030 pgd = c0004000 [0030] *pgd= Internal error: Oops: 17 [#1] Modules linked in: sdcc mmc_block mmc_core CPU: 0Not tainted (2.6.22.1-M7200JSDCAALBA #1) PC is at create_dir+0x14/0x200 LR is at sysfs_create_dir+0x74/0xa0 pc : []lr : []psr: a113 sp : c4993e18 ip : c4993e48 fp : c4993e44 r10: c48ac078 r9 : r8 : 0001 r7 : c48ac078 r6 : r5 : r4 : c4c0311c r3 : c4993e4c r2 : c4c0311c r1 : r0 : c4c03118 Flags: NzCv IRQs on FIQs on Mode SVC_32 Segment kernel Control: 00c5387f Table: 14c24008 DAC: 0017 Process kmmcd (pid: 1054, stack limit = 0xc4992258) Stack: (0xc4993e18 to 0xc4994000) 3e00: 0002 3e20: c011a9e8 c4c03118 c48ac078 0001 c4993e64 c4993e48 3e40: c00d32b4 c00d304c c01fe5cc c4c03118 c4993e8c c4993e68 3e60: c011aa4c c00d324c c4c03008 c4c03010 c48ac078 0001 3e80: c4993e9c c4993e90 c011ab34 c011a96c c4993ee4 c4993ea0 c014a8e0 c011ab2c 3ea0: c4c03010 c4c0317c c4c03118 0001 c48abf70 c4993edc c4c03008 3ec0: c4c03010 c48abf68 0001 c4993f0c c4993ee8 3ee0: bf0f8c20 c014a84c a95c c4993ef8 c4c032c4 c4c03008 c48abf68 3f00: c4993f4c c4993f10 bf0fa15c bf0f8bec 03534453 44313238 3f20: 55202732 1a003bd6 c48abf68 c4993f54 6013 c48ac27c bf0f7ce0 3f40: c4993f74 c4993f50 bf0f7db0 bf0f9bac c4993f74 00ff8000 c01fe530 c48ac280 3f60: c4a209c8 c4992000 c4993f9c c4993f78 c00567d0 bf0f7cec c4992000 c4a209f8 3f80: c4992000 c4a209c8 c4993fd4 c4993fa0 c0057450 c005672c 3fa0: c06e0850 c06e0740 c005b040 c4993fb0 c4993fb0 c4992000 3fc0: c4a209c8 c0057360 c4993ff4 c4993fd8 c005aefc c005736c 3fe0: c4993ff8 c0047920 c005aeac Backtrace: [] (create_dir+0x0/0x200) from [] (sysfs_create_dir+0x74/0xa0) r8:0001 r7:c48ac078 r6: r5: r4:c4c03118 [] (sysfs_create_dir+0x0/0xa0) from [] (kobject_shadow_add+0xec/0x1c0) r4:c4c03118 [] (kobject_shadow_add+0x0/0x1c0) from [] (kobject_add+0x14/0x20) [] (kobject_add+0x0/0x20) from [] (device_add+0xa0/0x5a0) [] (device_add+0x0/0x5a0) from [] (mmc_register_card+0x40/0xa0 [mmc_core]) [] (mmc_register_card+0x0/0xa0 [mmc_core]) from [] (mmc_attach_sd+0x5bc/0x740 [mmc_core]) r7:c48abf68 r6: r5:c4c03008 r4:c4c032c4 [] (mmc_attach_sd+0x0/0x740 [mmc_core]) from [] (mmc_rescan+0xd0/0x1a0 [mmc_core]) r8:bf0f7ce0 r7:c48ac27c r6:6013 r5:c4993f54 r4:c48abf68 [] (mmc_rescan+0x0/0x1a0 [mmc_core]) from [] (run_workqueue+0xb0/0x180) r6:c4992000 r5:c4a209c8 r4:c48ac280 [] (run_workqueue+0x0/0x180) from [] (worker_thread+0xf0/0x120) r8: r7: r6:c4a209c8 r5:c4992000 r4:c4a209f8 [] (worker_thread+0x0/0x120) from [] (kthread+0x5c/0xa0) r6:c0057360 r5:c4a209c8 r4:c4992000 [] (kthread+0x0/0xa0) from [] (do_exit+0x0/0x820) r6: r5: r4: 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/
