File 0102-rbd-shift-byte-count-as-a-64-bit-va.patch of Package qemu-linux-user.4930

Overview Repositories Revisions Requests Users Attributes Meta

File 0102-rbd-shift-byte-count-as-a-64-bit-va.patch of Package qemu-linux-user.4930

From 24851874c17117238069f3bfd4cdadd728261fa6 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 10 Oct 2016 21:58:58 +0200
Subject: [PATCH] rbd: shift byte count as a 64-bit value

Otherwise, reads of more than 2GB fail.  Until commit
7bbca9e290a9c7c217b5a24fc6094e91e54bd05d, reads of 2^41
bytes succeeded at least theoretically.

In fact, pdiscard ought to receive a 64-bit integer as the
count for the same reason.

Reported by Coverity.

Fixes: 7bbca9e290a9c7c217b5a24fc6094e91e54bd05d
Cc: qemu-stable@nongnu.org
Cc: kwolf@redhat.com
Cc: eblake@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit e948f663e9334249c394b88926addcdd3f9e35cd)
[BR: BSC#1013341]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 block/rbd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/rbd.c b/block/rbd.c
index ee2f416848..70e76ce4a4 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -729,7 +729,7 @@ static BlockAIOCB *qemu_rbd_aio_readv(BlockDriverState *bs,
                                       void *opaque)
 {
     return rbd_start_aio(bs, sector_num << BDRV_SECTOR_BITS, qiov,
-                         nb_sectors << BDRV_SECTOR_BITS, cb, opaque,
+                         (int64_t) nb_sectors << BDRV_SECTOR_BITS, cb, opaque,
                          RBD_AIO_READ);
 }
 
@@ -741,7 +741,7 @@ static BlockAIOCB *qemu_rbd_aio_writev(BlockDriverState *bs,
                                        void *opaque)
 {
     return rbd_start_aio(bs, sector_num << BDRV_SECTOR_BITS, qiov,
-                         nb_sectors << BDRV_SECTOR_BITS, cb, opaque,
+                         (int64_t) nb_sectors << BDRV_SECTOR_BITS, cb, opaque,
                          RBD_AIO_WRITE);
 }

Places

File 0102-rbd-shift-byte-count-as-a-64-bit-va.patch of Package qemu-linux-user.4930

Places