Messages in this thread | | | Date | Fri, 29 Aug 2008 15:39:33 +0900 | Subject | Re: MTD kobject warnings due to block layer changes | From | FUJITA Tomonori <> |
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On Fri, 29 Aug 2008 08:29:34 +0200 Jens Axboe <jens.axboe@oracle.com> wrote:
> On Fri, Aug 29 2008, FUJITA Tomonori wrote: > > On Thu, 28 Aug 2008 12:09:21 +0200 > > Jens Axboe <jens.axboe@oracle.com> wrote: > > > > > On Thu, Aug 28 2008, Manuel Lauss wrote: > > > > Hello, > > > > > > > > Todays -git spits out these wanings during boot, caused by > > > > Commit abf5439370491dd6fbb4fe1a7939680d2a9bc9d4 > > > > ( block: move cmdfilter from gendisk to request_queue ): > > > > > > > > Using physmap partition information > > > > Creating 3 MTD partitions on "physmap-flash": > > > > 0x00000000-0x01c00000 : "User FS" > > > > 0x01c00000-0x01c40000 : "booter" > > > > kobject (8511c410): tried to init an initialized object, something is seriously wrong. > > > > Call Trace: > > > > [<8036644c>] dump_stack+0x8/0x34 > > > > [<8021f050>] kobject_init+0x50/0xcc > > > > [<8021fa18>] kobject_init_and_add+0x24/0x58 > > > > [<8021d20c>] blk_register_filter+0x4c/0x64 > > > > [<8021c194>] add_disk+0x78/0xe0 > > > > [<8027d14c>] add_mtd_blktrans_dev+0x254/0x278 > > > > [<8027c8f0>] blktrans_notify_add+0x40/0x78 > > > > [<80279c00>] add_mtd_device+0xd0/0x150 > > > > [<8027b090>] add_mtd_partitions+0x568/0x5d8 > > > > [<80285458>] physmap_flash_probe+0x2ac/0x334 > > > > [<802644f8>] driver_probe_device+0x12c/0x244 > > > > [<8026465c>] __driver_attach+0x4c/0x84 > > > > [<80263c64>] bus_for_each_dev+0x58/0xac > > > > [<802633ec>] bus_add_driver+0xc4/0x24c > > > > [<802648e0>] driver_register+0xcc/0x184 > > > > [<80100460>] _stext+0x60/0x1bc > > > > > > > > 0x01c40000-0x01fe0000 : "vmlinux.elf" > > > > kobject (8511c410): tried to init an initialized object, something is seriously wrong. > > > > Call Trace: > > > > [<8036644c>] dump_stack+0x8/0x34 > > > > [<8021f050>] kobject_init+0x50/0xcc > > > > [<8021fa18>] kobject_init_and_add+0x24/0x58 > > > > [<8021d20c>] blk_register_filter+0x4c/0x64 > > > > [<8021c194>] add_disk+0x78/0xe0 > > > > [<8027d14c>] add_mtd_blktrans_dev+0x254/0x278 > > > > [<8027c8f0>] blktrans_notify_add+0x40/0x78 > > > > [<80279c00>] add_mtd_device+0xd0/0x150 > > > > [<8027b090>] add_mtd_partitions+0x568/0x5d8 > > > > [<80285458>] physmap_flash_probe+0x2ac/0x334 > > > > [<802644f8>] driver_probe_device+0x12c/0x244 > > > > [<8026465c>] __driver_attach+0x4c/0x84 > > > > [<80263c64>] bus_for_each_dev+0x58/0xac > > > > [<802633ec>] bus_add_driver+0xc4/0x24c > > > > [<802648e0>] driver_register+0xcc/0x184 > > > > [<80100460>] _stext+0x60/0x1bc > > > > > > > > NAND device: Manufacturer ID: 0xec, Chip ID: 0xf1 (Samsung NAND 128MiB 3,3V 8-bit) > > > > Scanning device for bad blocks > > > > Creating 1 MTD partitions on "gen_nand": > > > > 0x00000000-0x08000000 : "NAND FS 0" > > > > kobject (8511c410): tried to init an initialized object, something is seriously wrong. > > > > Call Trace: > > > > [<8036644c>] dump_stack+0x8/0x34 > > > > [<8021f050>] kobject_init+0x50/0xcc > > > > [<8021fa18>] kobject_init_and_add+0x24/0x58 > > > > [<8021d20c>] blk_register_filter+0x4c/0x64 > > > > [<8021c194>] add_disk+0x78/0xe0 > > > > [<8027d14c>] add_mtd_blktrans_dev+0x254/0x278 > > > > [<8027c8f0>] blktrans_notify_add+0x40/0x78 > > > > [<80279c00>] add_mtd_device+0xd0/0x150 > > > > [<8027b090>] add_mtd_partitions+0x568/0x5d8 > > > > [<804016b0>] plat_nand_probe+0x1e8/0x24c > > > > [<802644f8>] driver_probe_device+0x12c/0x244 > > > > [<8026465c>] __driver_attach+0x4c/0x84 > > > > [<80263c64>] bus_for_each_dev+0x58/0xac > > > > [<802633ec>] bus_add_driver+0xc4/0x24c > > > > [<802648e0>] driver_register+0xcc/0x184 > > > > [<80100460>] _stext+0x60/0x1bc > > > > > > Tomo? I don't see how this is happening. The queue is properly zeroed, > > > so no chance ->state_initialized being crap. > > > > With MTD, multiple gendisks share a single request_queue? > > Irk, sure looks that way. I thougt we had disbanded with that years ago, > it's generally not a "supported" configuration.
How about moving blk_register_filter(disk) from add_disk to sd.c and sr.c, etc, which want the command filter support?
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