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scsi-hd: fix property unset case

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Commit c53659f0 ("BlockConf: Call backend functions to detect geometry
and blocksizes") causes a segmentation fault on the invalid
configuration of a scsi device without a drive.

Let's check for conf.blk before calling blkconf_blocksizes. The error
will be handled later on in scsi_realize anyway.

Reported-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Ekaterina Tumanova 2015-03-04 11:02:16 +01:00 committed by Kevin Wolf
parent f0ab6f1096
commit df1d4c341a
1 changed files with 6 additions and 1 deletions
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7
hw/scsi/scsi-disk.c
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@ -2291,7 +2291,12 @@ static void scsi_realize(SCSIDevice *dev, Error **errp)
static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
blkconf_blocksizes(&s->qdev.conf);
/* can happen for devices without drive. The error message for missing
* backend will be issued in scsi_realize
*/
if (s->qdev.conf.blk) {
blkconf_blocksizes(&s->qdev.conf);
}
s->qdev.blocksize = s->qdev.conf.logical_block_size;
s->qdev.type = TYPE_DISK;
if (!s->product) {