On 00:03, Wei Yongquan wrote: > Hi > When I create a linear device with two small disk(less then 576K), > a segmentation fault occurs. follow message: > md: bind<hda> > md: bind<hdb> > divide error: 0000 [#1] > Modules linked in: > > Pid: 251, comm: mdadm.static Not tainted (2.6.27.4 #2) > EIP: 0060:[<c02ee9d0>] EFLAGS: 00000202 CPU: 0 > EIP is at linear_conf+0x1e0/0x2f0 > EAX: 00000381 EBX: 00000000 ECX: 00000000 EDX: 00000000 > ESI: 00000001 EDI: c6d571e0 EBP: 00000001 ESP: c6d83c64 > DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 > Process mdadm.static (pid: 251, ti=c6d82000 task=c781ca30 task.ti=c6d82000) > Stack: c02f1273 00000380 00000002 c6d5a400 c6d5a410 c032c7b0 c032c7b0 00000002 > 00d5bc6c c6d5a400 ffffffff c6d5a484 c6d5a400 c02eebc2 c035d0c0 c02f670d > c0336ed0 ffffffff c6d81cf0 c7482ec8 00000000 00000001 c6d5a410 c6d5a200 > Call Trace: > [<c02f1273>] mddev_put+0x13/0x70 > [<c02eebc2>] linear_run+0x22/0x80 > [<c02f670d>] do_md_run+0x3bd/0x960 > [<c0276ed9>] bd_claim_by_disk+0x1a9/0x280 > [<c02f31f9>] bind_rdev_to_array+0x1d9/0x270 > [<c023497c>] handle_level_irq+0x6c/0xa0 > [<c0204f79>] do_IRQ+0x39/0x70 > [<c02a3680>] cfq_merged_request+0x0/0x60 > [<c02f8f00>] md_ioctl+0x1530/0x1a10 > [<c0203193>] common_interrupt+0x23/0x28 > [<c02e2910>] task_no_data_intr+0x0/0x80 > [<c02de2aa>] ide_execute_command+0x4a/0x60 > [<c02e2485>] do_rw_taskfile+0x1a5/0x250 > [<c02deb72>] ide_wait_stat+0x42/0x90 > [<c02991f2>] elv_queue_empty+0x22/0x30 > [<c02dc53a>] ide_do_request+0x9a/0xa00 > [<c029ae58>] submit_bio+0x48/0xd0 > [<c0299447>] elv_drain_elevator+0x17/0x60 > [<c029ba51>] __generic_unplug_device+0x11/0x40 > [<c02f79d0>] md_ioctl+0x0/0x1a10 > [<c029edad>] blkdev_driver_ioctl+0x5d/0x60 > [<c029f051>] blkdev_ioctl+0x2a1/0x820 > [<c029af7b>] __freed_request+0x9b/0xa0 > [<c029afa4>] freed_request+0x24/0x50 > [<c02e1c58>] ide_raw_taskfile+0x78/0x90 > [<c02e1c88>] ide_no_data_taskfile+0x18/0x20 > [<c02e505f>] ide_cacheflush_p+0x5f/0x90 > [<c02e55de>] ide_disk_put+0x2e/0x50 > [<c02e5693>] idedisk_release+0x43/0xb0 > [<c0276ab5>] block_ioctl+0x15/0x20 > [<c0276aa0>] block_ioctl > > I found the code in linear.c: +200 > round = sector_div(sz, base); This sector_div() is in linear_conf() while the call trace indicates the bug happens in mddev_put(). I'll have a deeper look later today. Is this a recent regression? Thanks for the report Andre -- The only person who always got his work done by Friday was Robinson Crusoe
Attachment:
signature.asc
Description: Digital signature
