From: Jens Axboe Date: Mon, 16 Jan 2023 15:51:05 +0000 (-0700) Subject: pktcdvd: check for NULL returna fter calling bio_split_to_limits() X-Git-Tag: v6.1.8~90 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=66144d830f59364d650ee9e7dc575daf9748172f;p=platform%2Fkernel%2Flinux-starfive.git pktcdvd: check for NULL returna fter calling bio_split_to_limits() commit 3e9900f3bd7ba30d60f82b162b70a1dffe4e8e24 upstream. The revert of the removal of this driver happened after we fixed up the split limits for NOWAIT issue, hence it got missed. Ensure that we check for a NULL bio after splitting, in case it should be retried. Marking this as fixing both commits, so that stable backport will do this correctly. Cc: stable@vger.kernel.org Fixes: 9cea62b2cbab ("block: don't allow splitting of a REQ_NOWAIT bio") Fixes: 4b83e99ee709 ("Revert "pktcdvd: remove driver."") Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 4cea3b08087e..2f1a92509271 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2400,6 +2400,8 @@ static void pkt_submit_bio(struct bio *bio) struct bio *split; bio = bio_split_to_limits(bio); + if (!bio) + return; pkt_dbg(2, pd, "start = %6llx stop = %6llx\n", (unsigned long long)bio->bi_iter.bi_sector,