Messages in this thread | | | Date | Thu, 30 Mar 2006 17:58:04 +0200 | From | Jens Axboe <> | Subject | Re: about ll_rw_blk.c of void generic_make_request(struct bio *bio) |
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On Wed, Mar 29 2006, erich wrote: > Dear Jens Axboe, > > I am an engineer of Areca (SATA RAID controller producer). > I have coding linux driver for kernel.org "arcmsr". > I have got dump message %s: rw=%ld, want=%Lu, limit=%Lu message from ext2 > file system. > But I am do well at Ext3 and all linux files system. > This issue only occur at read command. > Could you give me some info how to fix this bug in my linux scsi raid > driver? > > About the code ll_rw_blk.c mention that "it may well happen - the kernel > calls bread() without checking the size of the device, e.g., when mounting > a device." > > I hope that you have more experience with it and knew what's wrong I am > doing in my driver. > > > generic_make_request(struct bio *bio) > > if (maxsector) > { > sector_t sector = bio->bi_sector; > > if (maxsector < nr_sectors || maxsector - nr_sectors < sector) > { > /* > * This may well happen - the kernel calls bread() > * without checking the size of the device, e.g., when > * mounting a device. > */ > handle_bad_sector(bio); > goto end_io; > } > }
I can't really say, from my recollection of leafing over lkml emails, I seem to recall someone saying he hit this with a newer kernel where as the older one did not?
What are the sectors exactly it complains about, eg the full line you see?
-- Jens Axboe
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