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authorPaolo Bonzini <pbonzini@redhat.com>2015-06-26 11:44:46 +0200
committerJens Axboe <axboe@fb.com>2015-06-27 11:43:34 -0600
commit2c4cffe85170a001c1d092681c86aa1128295221 (patch)
treec79d5bc1a94c2b6886826e170decad8f55cd6c2a /block
parent3399a3f7464a624db1b365dbce0fef0ef4636c05 (diff)
downloadlinux-2c4cffe85170a001c1d092681c86aa1128295221.tar.bz2
block: fix bogus EFAULT error from SG_IO ioctl
Whenever blk_fill_sghdr_rq fails, its errno code is ignored and changed to EFAULT. This can cause very confusing errors: $ sg_persist -k /dev/sda persistent reservation in: pass through os error: Bad address The fix is trivial, just propagate the return value from blk_fill_sghdr_rq. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
-rw-r--r--block/scsi_ioctl.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 55b6f15dac90..dda653ce7b24 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -326,8 +326,8 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
goto out_put_request;
}
- ret = -EFAULT;
- if (blk_fill_sghdr_rq(q, rq, hdr, mode))
+ ret = blk_fill_sghdr_rq(q, rq, hdr, mode);
+ if (ret < 0)
goto out_free_cdb;
ret = 0;