Messages in this thread Patch in this message | | | Date | Thu, 14 Dec 2006 21:48:56 +0100 | From | Jens Axboe <> | Subject | Re: Linux 2.6.20-rc1 |
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On Thu, Dec 14 2006, Jens Axboe wrote: > > I'll do that if nobody comes up with anything obvious. > > If you can just test 2.6.19-git1, then we'll know if it's the SG_IO > patch again.
Actually, you should test 2.6.19-git1 with this patch applied as well.
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Date: Mon, 11 Dec 2006 09:01:34 +0000 (+0100) Subject: [PATCH] fix SG_IO bio leak X-Git-Url: http://git.home.kernel.dk/?p=linux-2.6-block.git;a=commitdiff;h=77d172ce2719b5ad2dc0637452c8871d9cba344c
[PATCH] fix SG_IO bio leak
This patch fixes bio leaks in SG_IO. rq->bio can be changed after io completion, so we need to reset rq->bio before calling blk_rq_unmap_user()
http://marc.theaimsgroup.com/?l=linux-kernel&m=116570666807983&w=2
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com> ---
--- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -228,6 +228,7 @@ static int sg_io(struct file *file, requ struct request *rq; char sense[SCSI_SENSE_BUFFERSIZE]; unsigned char cmd[BLK_MAX_CDB]; + struct bio *bio; if (hdr->interface_id != 'S') return -EINVAL; @@ -308,6 +309,7 @@ static int sg_io(struct file *file, requ if (ret) goto out; + bio = rq->bio; rq->retries = 0; start_time = jiffies; @@ -338,6 +340,7 @@ static int sg_io(struct file *file, requ hdr->sb_len_wr = len; } + rq->bio = bio; if (blk_rq_unmap_user(rq)) ret = -EFAULT; -- Jens Axboe
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