3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> commit 75c7caf5a052ffd8db3312fa7864ee2d142890c4 upstream. Pass valid_io_request() checks if request end coincides with disksize (end equals bound), only fail if we attempt to read beyond the bound. mkfs.ext2 produces numerous errors: [ 2164.632747] quiet_error: 1 callbacks suppressed [ 2164.633260] Buffer I/O error on device zram0, logical block 153599 [ 2164.633265] lost page write due to I/O error on zram0 Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> Cc: Thomas Backlund <tmb@xxxxxxxxxx> Cc: Minchan Kim <minchan@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/zram/zram_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -432,7 +432,7 @@ static inline int valid_io_request(struc end = start + (bio->bi_size >> SECTOR_SHIFT); bound = zram->disksize >> SECTOR_SHIFT; /* out of range range */ - if (unlikely(start >= bound || end >= bound || start > end)) + if (unlikely(start >= bound || end > bound || start > end)) return 0; /* I/O request is valid */ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html