Alberto Garcia 9883975050 qcow2: Prevent allocating L2 tables at offset 0 ...

If the refcount data is corrupted then we can end up trying to
allocate a new L2 table at offset 0 in the image, triggering an
assertion in the qcow2 cache that would crash QEMU:

  qcow2_cache_entry_mark_dirty: Assertion `c->entries[i].offset != 0' failed

This patch adds an explicit check for this scenario and a new test
case.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 92dac37191ae7844a2da22c122204eb493cc3133.1509718618.git.berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>

2017-11-14 18:06:25 +01:00

..

accounting.c

block: make accounting thread-safe

2017-06-16 07:55:00 +08:00

backup.c

dirty-bitmap: Change bdrv_dirty_iter_next() to report byte offset

2017-10-06 16:28:58 +02:00

blkdebug.c

block: Align block status requests

2017-10-26 14:45:57 +02:00

blkreplay.c

block: change variable names in BlockDriverState

2017-06-26 14:54:46 +02:00

blkverify.c

blkverify: Catch bs->exact_filename overflow

2017-06-26 14:54:46 +02:00

block-backend.c

block: Leave valid throttle timers when removing a BDS from a backend

2017-11-13 15:43:49 +00:00

bochs.c

block: do not set BDS read_only if copy_on_read enabled

2017-04-24 15:09:33 -04:00

cloop.c

block: do not set BDS read_only if copy_on_read enabled

2017-04-24 15:09:33 -04:00

commit.c

commit: Remove overlay_bs

2017-10-06 16:28:58 +02:00

crypto.c

block: support passthrough of BDRV_REQ_FUA in crypto driver

2017-10-06 16:30:47 +02:00

crypto.h

qcow: convert QCow to use QCryptoBlock for encryption

2017-07-11 17:44:56 +02:00

curl.c

curl: do not do aio_poll when waiting for a free CURLState

2017-05-16 10:34:50 -04:00

dirty-bitmap.c

dirty-bitmap: Convert internal hbitmap size/granularity

2017-10-06 16:28:58 +02:00

dmg-bz2.c

dmg: Move libbz2 code to dmg-bz2.so

2016-10-07 14:14:06 +02:00

dmg.c

dmg: use DIV_ROUND_UP

2017-08-31 12:29:07 +02:00

dmg.h

dmg: Move libbz2 code to dmg-bz2.so

2016-10-07 14:14:06 +02:00

file-posix.c

file-posix: Clear out first sector in hdev_create

2017-09-26 14:46:23 +02:00

file-win32.c

qapi: Change data type of the FOO_lookup generated for enum FOO

2017-09-04 13:09:13 +02:00

gluster.c

qapi: Change data type of the FOO_lookup generated for enum FOO

2017-09-04 13:09:13 +02:00

io.c

block: Reduce bdrv_aligned_preadv() rounding

2017-10-26 14:45:57 +02:00

iscsi-opts.c

block/iscsi: statically link qemu_iscsi_opts

2017-01-27 18:07:58 +01:00

iscsi.c

scsi: move block/scsi.h to include/scsi/constants.h

2017-09-19 14:09:31 +02:00

linux-aio.c

block: explicitly acquire aiocontext in aio callbacks that need it

2017-02-21 11:39:39 +00:00

Makefile.objs

block: add throttle block filter driver

2017-09-06 10:12:02 +02:00

mirror.c

block: Convert bdrv_get_block_status_above() to bytes

2017-10-26 14:45:57 +02:00

nbd-client.c

nbd-client: Stricter enforcing of structured reply spec

2017-11-09 10:22:26 -06:00

nbd-client.h

nbd: Minimal structured read for client

2017-10-30 21:48:41 +01:00

nbd.c

nbd: Implement NBD_INFO_BLOCK_SIZE on client

2017-07-14 12:04:42 +02:00

nfs.c

qapi: Mechanically convert FOO_lookup[...] to FOO_str(...)

2017-09-04 13:09:13 +02:00

null.c

block/null: Remove 'filename' option

2017-08-08 15:19:16 +02:00

parallels.c

qapi: drop the sentinel in enum array

2017-09-04 13:09:13 +02:00

qapi.c

block: move ThrottleGroup membership to ThrottleGroupMember

2017-09-05 16:47:51 +02:00

qcow2-bitmap.c

qcow2: Switch store_bitmap_data() to byte-based iteration

2017-10-06 16:28:58 +02:00

qcow2-cache.c

qcow2: add qcow2_cache_discard

2017-09-26 15:00:32 +02:00

qcow2-cluster.c

qcow2: Prevent allocating L2 tables at offset 0

2017-11-14 18:06:25 +01:00

qcow2-refcount.c

qcow2: Prevent allocating refcount blocks at offset 0

2017-11-14 18:06:25 +01:00

qcow2-snapshot.c

qcow2: Discard/zero clusters by byte count

2017-05-11 14:28:07 +02:00

qcow2.c

qcow2: Always execute preallocate() in a coroutine

2017-10-26 15:01:14 +02:00

qcow2.h

qcow2: truncate the tail of the image file after shrinking the image

2017-10-06 16:30:48 +02:00

qcow.c

block: convert qcrypto_block_encrypt|decrypt to take bytes offset

2017-10-06 16:30:47 +02:00

qed-check.c

qed: Use DIV_ROUND_UP

2016-06-07 18:19:24 +03:00

qed-cluster.c

qed: protect table cache with CoMutex

2017-07-17 11:34:11 +08:00

qed-l2-cache.c

qed: protect table cache with CoMutex

2017-07-17 11:34:11 +08:00

qed-table.c

qed: protect table cache with CoMutex

2017-07-17 11:34:11 +08:00

qed.c

block: rename bdrv_co_drain to bdrv_co_drain_begin

2017-10-13 12:38:41 +01:00

qed.h

qed: protect table cache with CoMutex

2017-07-17 11:34:11 +08:00

quorum.c

qapi: Change data type of the FOO_lookup generated for enum FOO

2017-09-04 13:09:13 +02:00

raw-format.c

block: remove unused bdrv_media_changed

2017-09-04 18:31:13 +02:00

rbd.c

qapi: Mechanically convert FOO_lookup[...] to FOO_str(...)

2017-09-04 13:09:13 +02:00

replication.c

block: Add reopen_queue to bdrv_child_perm()

2017-09-26 14:46:23 +02:00

sheepdog.c

Merge remote-tracking branch 'remotes/berrange/tags/pull-qio-20170905-2' into staging

2017-09-05 14:14:33 +01:00

snapshot.c

qobject: Use simpler QDict/QList scalar insertion macros

2017-05-09 09:13:51 +02:00

ssh.c

util: remove the obsolete non-blocking connect

2017-09-05 13:21:58 +01:00

stream.c

block: Make bdrv_is_allocated_above() byte-based

2017-07-10 13:18:07 +02:00

throttle-groups.c

throttle-groups: drain before detaching ThrottleState

2017-11-13 14:02:09 +00:00

throttle.c

block/throttle.c: add bdrv_co_drain_begin/end callbacks

2017-10-13 12:38:41 +01:00

trace-events

block: Make bdrv_round_to_clusters() signature more useful

2017-10-26 14:45:57 +02:00

vdi.c

vdi: make it thread-safe

2017-07-17 11:28:15 +08:00

vhdx-endian.c

vhdx: Use QEMU UUID API

2016-09-23 11:42:52 +08:00

vhdx-log.c

vhdx: use QEMU_ALIGN_DOWN

2017-08-31 12:29:07 +02:00

vhdx.c

block/vhdx: check for offset overflow to bdrv_truncate()

2017-08-08 14:37:00 +02:00

vhdx.h

block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec

2014-12-12 15:42:22 +00:00

vmdk.c

vmdk: Fix error handling/reporting of vmdk_check

2017-08-08 15:19:16 +02:00

vpc.c

vpc: use DIV_ROUND_UP

2017-08-31 12:29:07 +02:00

vvfat.c

block: Add reopen_queue to bdrv_child_perm()

2017-09-26 14:46:23 +02:00

vxhs.c

qobject: Use simpler QDict/QList scalar insertion macros

2017-05-09 09:13:51 +02:00

win32-aio.c

block: explicitly acquire aiocontext in aio callbacks that need it

2017-02-21 11:39:39 +00:00

write-threshold.c

block: use bdrv_add_before_write_notifier

2016-10-07 13:34:07 +02:00