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b0ddcbbb36
qemu/block
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Kevin Wolf b0ddcbbb36 block: Fix copy-on-read crash with partial final cluster 
If the virtual disk size isn't aligned to full clusters,
bdrv_co_do_copy_on_readv() may get pnum == 0 before having the full
cluster completed, which will let it run into an assertion failure:

qemu-io: block/io.c:1203: bdrv_co_do_copy_on_readv: Assertion `skip_bytes < pnum' failed.

Check for EOF, assert that we read at least as much as the read request
originally wanted to have (which is true at EOF because otherwise
bdrv_check_byte_request() would already have returned an error) and
return success early even though we couldn't copy the full cluster.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-07-10 10:36:15 +02:00
..
accounting.c block/accounting: introduce latency histogram 2018-03-19 14:58:37 -05:00
backup.c backup: Use copy offloading 2018-07-02 23:23:45 -04:00
blkdebug.c block: Support BDRV_REQ_WRITE_UNCHANGED in filters 2018-05-15 16:15:21 +02:00
blklogwrites.c block/blklogwrites: Add an option for the update interval of the log superblock 2018-07-05 10:50:21 +02:00
blkreplay.c block: Support BDRV_REQ_WRITE_UNCHANGED in filters 2018-05-15 16:15:21 +02:00
blkverify.c block: Support BDRV_REQ_WRITE_UNCHANGED in filters 2018-05-15 16:15:21 +02:00
block-backend.c block: fix QEMU crash with scsi-hd and drive_del 2018-06-18 15:03:25 +02:00
bochs.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
cloop.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
commit.c job: Add error message for failing jobs 2018-05-30 13:31:01 +02:00
copy-on-read.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
create.c block/create: Mark blockdev-create stable 2018-05-30 13:31:18 +02:00
crypto.c block/crypto: Fix memory leak in create error path 2018-07-05 10:29:19 +02:00
crypto.h block/crypto: Simplify block_crypto_{open,create}_opts_init() 2018-06-29 14:20:56 +02:00
curl.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
dirty-bitmap.c dirty-bitmap: fix double lock on bitmap enabling 2018-07-04 02:12:49 -04:00
dmg-bz2.c
dmg.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
dmg.h block: remove "qemu/osdep.h" from header file 2017-12-18 17:07:02 +03:00
file-posix.c file-posix: Unlock FD after creation 2018-07-05 11:07:58 +02:00
file-win32.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
gluster.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
io.c block: Fix copy-on-read crash with partial final cluster 2018-07-10 10:36:15 +02:00
iscsi-opts.c Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
iscsi.c iscsi: Avoid potential for get_status overflow 2018-07-02 14:28:26 -05:00
linux-aio.c linux-aio: properly bubble up errors from initialization 2018-06-27 13:06:34 +01:00
Makefile.objs block: Add blklogwrites 2018-07-05 10:29:19 +02:00
mirror.c block/mirror: Add copy mode QAPI interface 2018-06-18 17:05:16 +02:00
nbd-client.c nbd/client: Add x-dirty-bitmap to query bitmap from server 2018-07-02 15:27:38 -05:00
nbd-client.h nbd/client: Add x-dirty-bitmap to query bitmap from server 2018-07-02 15:27:38 -05:00
nbd.c nbd/client: Add x-dirty-bitmap to query bitmap from server 2018-07-02 15:27:38 -05:00
nfs.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
null.c null: Switch to byte-based read/write 2018-05-15 16:11:41 +02:00
nvme.c qobject: Modify qobject_ref() to return obj 2018-05-04 08:27:53 +02:00
parallels.c parallels: Switch to byte-based calls 2018-06-29 14:20:56 +02:00
parallels.h Clean up includes 2018-02-09 05:05:11 +01:00
qapi.c qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF 2018-05-04 08:27:53 +02:00
qcow2-bitmap.c block/qcow2-bitmap: fix free_bitmap_clusters 2018-06-11 16:18:45 +02:00
qcow2-cache.c qcow2: Allow configuring the L2 slice size 2018-02-13 17:00:00 +01:00
qcow2-cluster.c qcow2: Free allocated clusters on write error 2018-06-29 14:20:56 +02:00
qcow2-refcount.c qcow2: Repair OFLAG_COPIED when fixing leaks 2018-06-11 16:18:45 +02:00
qcow2-snapshot.c block: use local path for local headers 2018-05-31 04:16:06 +03:00
qcow2.c qcow2: add compress threads 2018-07-05 10:29:19 +02:00
qcow2.h qcow2: add compress threads 2018-07-05 10:29:19 +02:00
qcow.c qcow: Switch to a byte-based driver 2018-06-29 14:20:56 +02:00
qed-check.c block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
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 block: convert bdrv_check callback to coroutine_fn 2018-03-09 15:17:47 +01:00
qed.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
qed.h qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
quorum.c block: Add block-specific QDict header 2018-06-15 14:49:44 +02:00
raw-format.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
rbd.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
replication.c replication: Switch to byte-based calls 2018-06-29 14:20:56 +02:00
sheepdog.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
snapshot.c block: Add block-specific QDict header 2018-06-15 14:49:44 +02:00
ssh.c block: Convert .bdrv_truncate callback to coroutine_fn 2018-06-29 14:20:56 +02:00
stream.c job: Add error message for failing jobs 2018-05-30 13:31:01 +02:00
throttle-groups.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00
throttle.c throttle: Fix crash on reopen 2018-06-11 16:18:45 +02:00
trace-events backup: Use copy offloading 2018-07-02 23:23:45 -04:00
vdi.c vdi: Use definitions from "qemu/units.h" 2018-07-02 14:45:23 +02:00
vhdx-endian.c block: use local path for local headers 2018-05-31 04:16:06 +03:00
vhdx-log.c block: use local path for local headers 2018-05-31 04:16:06 +03:00
vhdx.c vhdx: Switch to byte-based calls 2018-06-29 14:20:56 +02:00
vhdx.h
vmdk.c vmdk: return ERROR when cluster sector is larger than vmdk limitation 2018-03-26 21:17:24 +02:00
vpc.c block: Factor out qobject_input_visitor_new_flat_confused() 2018-06-15 14:49:44 +02:00
vvfat.c block: ignore_bds_parents parameter for drain functions 2018-06-18 15:03:25 +02:00
vxhs.c block: Add block-specific QDict header 2018-06-15 14:49:44 +02:00
win32-aio.c file-win32: Switch to byte-based callbacks 2018-05-15 16:11:41 +02:00
write-threshold.c Include less of the generated modular QAPI headers 2018-03-02 13:45:50 -06:00