On 05/11/2012 04:44 PM, Bernd Schubert wrote: > On 05/11/2012 04:36 PM, Jens Axboe wrote: >> On 05/11/2012 03:49 PM, Bernd Schubert wrote: >>> The number of bio_get_nr_vecs() is passed down via bio_alloc() to >>> bvec_alloc_bs(), which fails the bio allocation if >>> nr_iovecs> BIO_MAX_PAGES. For the underlying caller this causes an >>> unexpected bio allocation failure. >>> Limiting to queue_max_segments() is not sufficient, as max_segments >>> also might be very large. >>> >>> bvec_alloc_bs(gfp_mask, nr_iovecs, ) => NULL when nr_iovecs> BIO_MAX_PAGES >>> bio_alloc_bioset(gfp_mask, nr_iovecs, ...) >>> bio_alloc(GFP_NOIO, nvecs) >>> xfs_alloc_ioend_bio() >> >> Thanks, looks sane. Applied. >> > > Great, thanks! Should we CC linux-stable for commit > 5abebfdd02450fa1349daacf242e70b3736581e3 and this one, as I got a hard > kernel panic? Yes, that's a good idea. I've ammended the commit now to include stable. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
