diff options
| author | Peter Lieven <pl@kamp.de> | 2015-08-14 13:33:36 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-07 18:14:03 +0200 |
| commit | 6d1f252d8c1ba73bf6ed9af28731a9c9c3d473a2 (patch) | |
| tree | b8a3b659416a998c29ea63713eb181c65dc19873 /block/iscsi.c | |
| parent | f3926945c85689e8af324c0db0b39be771dbbebb (diff) | |
block/iscsi: validate block size returned from target
It has been reported that at least tgtd returns a block size of 0
for LUN 0. To avoid running into divide by zero later on and protect
against other problematic block sizes validate the block size right
at connection time.
Cc: qemu-stable@nongnu.org
Reported-by: Andrey Korolyov <andrey@xdel.ru>
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-Id: <1439552016-8557-1-git-send-email-pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'block/iscsi.c')
| -rw-r--r-- | block/iscsi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 50029168eb..93f1ee4c63 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1214,6 +1214,10 @@ static void iscsi_readcapacity_sync(IscsiLun *iscsilun, Error **errp) if (task == NULL || task->status != SCSI_STATUS_GOOD) { error_setg(errp, "iSCSI: failed to send readcapacity10 command."); + } else if (!iscsilun->block_size || + iscsilun->block_size % BDRV_SECTOR_SIZE) { + error_setg(errp, "iSCSI: the target returned an invalid " + "block size of %d.", iscsilun->block_size); } if (task) { scsi_free_scsi_task(task); |