Hi Bart, On Thu, Jan 29, 2015 at 7:27 PM, Bart Van Assche <bart.vanass...@sandisk.com> wrote: > On 01/29/15 00:52, Ming Lei wrote: >> On Thu, Jan 29, 2015 at 2:28 AM, Bart Van Assche >> <bart.vanass...@sandisk.com> wrote: >>> This patch fixes a use-after-free that was introduced via patch >>> "blk-mq: fix hctx/ctx kobject use-after-free" (commit >>> 76d697d10769; kernel v3.19-rc4) and fixes the following crash: >> >> Sorry, my fault, I shouldn't have linked mq's release with mq_kobj, >> which may be released before running blk_cleanup_queue(). >> >> Another approach may be to revert the faulty commit and release all >> mq stuff in request queue's release handler(blk_release_queue) >> which should be more safe and simple. > > Hello Ming, > > How important is the patch with commit ID 76d697d10769 ? Does it have to > be included in kernel v3.19 or can it be postponed until kernel v3.19.1 > or kernel v3.19.2 ? If so, how about reverting that patch for kernel
The patch has been in linus tree, but it isn't marked as -stable. > v3.19 and sending a reworked patch to Jens with a "Cc: stable" tag after > the release of kernel v3.19 ? That last patch will then get included in > a stable version of kernel v3.19. Anyway, it need to be fixed, either reverted or a new patch. I will post out one revert and another fix candidate, and let's discuss further. Thanks, Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
