OpenE2K/qemu-e2k
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9eeb6dd1b2
qemu-e2k/block
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Fam Zheng 9eeb6dd1b2 block: Fix NULL deference for unaligned write if qiov is NULL 
For zero write, callers pass in NULL qiov (qemu-io "write -z" or
scsi-disk "write same").

Commit fc3959e466 fixed bdrv_co_write_zeroes which is the common case
for this bug, but it still exists in bdrv_aio_write_zeroes. A simpler
fix would be in bdrv_co_do_pwritev which is the NULL dereference point
and covers both cases.

So don't access it in bdrv_co_do_pwritev in this case, use three aligned
writes.

[Initialize ret to 0 in bdrv_co_do_zero_pwritev() to avoid uninitialized
variable warning with gcc 4.9.2.
--Stefan]

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1431522721-3266-3-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22 09:37:33 +01:00
..
accounting.c
archipelago.c block: remove superfluous '\n' around error_report/error_setg 2015-03-10 08:15:33 +03:00
backup.c block: Ensure consistent bitmap function prototypes 2015-04-28 15:36:10 +02:00
blkdebug.c blkdebug: Add bdrv_truncate() 2015-04-28 15:36:09 +02:00
blkverify.c
block-backend.c block-backend: Expose bdrv_write_zeroes() 2015-04-28 15:36:08 +02:00
bochs.c
cloop.c
commit.c
curl.c
dmg.c
gluster.c
io.c block: Fix NULL deference for unaligned write if qiov is NULL 2015-05-22 09:37:33 +01:00
iscsi.c block/iscsi: use the allocationmap also if cache.direct=on 2015-04-28 15:36:10 +02:00
linux-aio.c
Makefile.objs block: move I/O request processing to block/io.c 2015-04-28 15:36:17 +02:00
mirror.c block/mirror: Always call block_job_sleep_ns() 2015-04-28 15:36:11 +02:00
nbd-client.c nbd: Set block size to BDRV_SECTOR_SIZE 2015-03-18 12:07:01 +01:00
nbd-client.h nbd: Set block size to BDRV_SECTOR_SIZE 2015-03-18 12:07:01 +01:00
nbd.c nbd: Fix nbd_establish_connection()'s return value 2015-03-18 12:05:38 +01:00
nfs.c
null.c block/null: Support reopen 2015-04-28 15:36:09 +02:00
parallels.c block/parallels: improve image writing performance further 2015-05-22 09:37:32 +01:00
qapi.c qobject: Clean up around qtype_code 2015-05-11 08:59:07 -04:00
qcow2-cache.c
qcow2-cluster.c qcow2: Use 64 bits for refcount values 2015-03-10 14:02:21 +01:00
qcow2-refcount.c Convert (ffs(val) - 1) to ctz32(val) 2015-04-28 15:36:08 +02:00
qcow2-snapshot.c savevm: create snapshot failed when id_str already exists 2015-04-28 15:36:08 +02:00
qcow2.c block: add 'node-name' field to BLOCK_IMAGE_CORRUPTED 2015-04-28 15:36:09 +02:00
qcow2.h qcow2: Fix header update with overridden backing file 2015-04-08 10:29:20 +01:00
qcow.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
qed-check.c
qed-cluster.c
qed-gencb.c
qed-l2-cache.c
qed-table.c
qed.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
qed.h
quorum.c block: add bdrv_get_device_or_node_name() 2015-04-28 15:36:09 +02:00
raw_bsd.c block: Add driver methods to probe blocksizes and geometry 2015-03-10 14:02:22 +01:00
raw-aio.h
raw-posix.c block: align bounce buffers to page 2015-05-22 09:37:33 +01:00
raw-win32.c block: Remove "growable" from BDS 2015-02-16 15:07:19 +00:00
rbd.c Convert (ffs(val) - 1) to ctz32(val) 2015-04-28 15:36:08 +02:00
sheepdog.c sheepdog: fix resource leak with sd_snapshot_create 2015-05-08 14:11:10 +03:00
snapshot.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
ssh.c
stream.c
vdi.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
vhdx-endian.c
vhdx-log.c
vhdx.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
vhdx.h
vmdk.c vmdk: Widen before shifting 32 bit header field 2015-04-28 15:36:11 +02:00
vpc.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
vvfat.c block: use bdrv_get_device_or_node_name() in error messages 2015-04-28 15:36:09 +02:00
win32-aio.c
write-threshold.c block: Fix block-set-write-threshold not to use funky error class 2015-03-16 17:07:25 +01:00