On Thursday 02 August 2007, Alan Cox wrote:
> > If you fix the printk, add patch description (can use the one from my patch)
> > and add "Signed-off-by:" I would happily apply it and dump mine version.
>
> Sorry but the patch is wrong - plain and simple. It works over the bug
> but its not the real problem. ide-disk needs to spot a 1K request for the
> last 512 bytes, issue a 512 byte request and complete the 512 bytes only.
block/ll_rw_blk.c:
static inline void __generic_make_request(struct bio *bio)
{
...
int ret, nr_sectors = bio_sectors(bio);
...
/* Test device or partition size, when known. */
maxsector = bio->bi_bdev->bd_inode->i_size >> 9;
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;
so low-level-driver should never see such requests.
Additionally fs/partitions/check.c:rescan_partitions() should warn if the
partition exceeds device size and we are not seeing any such warning.
Mikko, could you please revert any patches that you have applied, uncomment
#define DEBUG in ide-disk.c, recompile and note the sectors count in the
"hdd: reading: block=78165360 sectors=..."
debug message?
Thanks,
Bart
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