Kevin Wolf 87ab880252 block: Fix in_flight leak in request padding error path ... When bdrv_pad_request() fails in bdrv_co_preadv_part(), bs->in_flight has been increased, but is never decreased again. This leads to a hang when trying to drain the block node. This bug was observed with Windows guests which issue a request that fully uses IOV_MAX during installation, so that when padding is necessary (O_DIRECT with a 4k sector size block device on the host), adding another entry causes failure. Call bdrv_dec_in_flight() to fix this. There is a larger problem to solve here because this request shouldn't even fail, but Windows doesn't seem to care and with this minimal fix the installation succeeds. So given that we're already in freeze, let's take this minimal fix for 6.1. Fixes: 98ca45494f Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1972079 Reported-by: Qing Wang <qinwang@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20210727154923.91067-1-kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>		2021-08-03 15:43:30 +02:00
..
export	block/export: Conditionally ignore set-context error	2021-07-20 16:49:31 +02:00
monitor	monitor: hmp_qemu_io: acquire aio contex, fix crash	2021-05-14 16:14:10 +02:00
accounting.c
aio_task.c
amend.c
backup-top.c	block/backup-top: drop .active	2021-04-30 12:27:48 +02:00
backup-top.h
backup.c	mirror: stop cancelling in-flight requests on non-force cancel in READY	2021-05-14 16:14:10 +02:00
blkdebug.c	blkdebug: protect rules and suspended_reqs with a lock	2021-07-19 17:38:38 +02:00
blklogwrites.c	block: check return value of bdrv_open_child and drop error propagation	2021-03-08 15:07:09 -06:00
blkreplay.c	block: check return value of bdrv_open_child and drop error propagation	2021-03-08 15:07:09 -06:00
blkverify.c	block: check return value of bdrv_open_child and drop error propagation	2021-03-08 15:07:09 -06:00
block-backend.c	block: add max_hw_transfer to BlockLimits	2021-06-25 10:54:13 +02:00
block-copy.c	block-copy: atomic .cancelled and .finished fields in BlockCopyCallState	2021-06-25 14:33:51 +03:00
block-gen.h
bochs.c
cloop.c
commit.c	block/commit: use QEMU_AUTO_VFREE	2021-06-29 16:51:21 +02:00
copy-on-read.c	block/copy-on-read: use bdrv_drop_filter() and drop s->active	2021-05-14 16:14:10 +02:00
copy-on-read.h
coroutines.h	block/nbd: reuse nbd_co_do_establish_connection() in nbd_open()	2021-06-18 12:21:22 -05:00
create.c
crypto.c	block: add bdrv_co_delete_file_noerr	2021-02-15 15:10:14 +01:00
crypto.h
curl.c	curl: Disconnect sockets from CURLState	2021-03-19 10:15:06 +01:00
dirty-bitmap.c	iotests: Improve and rename test 291 to qemu-img-bitmap	2021-07-21 14:14:41 -05:00
dmg-bz2.c
dmg-lzfse.c
dmg.c
dmg.h
file-posix.c	block/file-posix: Optimize for macOS	2021-07-06 14:28:55 +01:00
file-win32.c
filter-compress.c
gluster.c
io_uring.c	block/io_uring: resubmit when result is -EAGAIN	2021-07-29 17:14:55 +01:00
io.c	block: Fix in_flight leak in request padding error path	2021-08-03 15:43:30 +02:00
iscsi-opts.c	modules: add block module annotations	2021-07-09 18:20:27 +02:00
iscsi.c
linux-aio.c	linux-aio: limit the batch size using aio-max-batch parameter	2021-07-21 13:47:50 +01:00
meson.build	meson: fix missing preprocessor symbols	2021-07-09 18:19:00 +02:00
mirror.c	block/mirror: fix active mirror dead-lock in mirror_wait_on_conflicts	2021-07-20 13:14:45 +02:00
nbd.c	nbd: register yank function earlier	2021-07-12 11:24:00 -05:00
nfs.c	util/uri: do not check argument of uri_free()	2021-07-09 12:26:05 +02:00
null.c
nvme.c	block/nvme: Fix VFIO_MAP_DMA failed: No space left on device	2021-07-26 09:38:12 +01:00
parallels-ext.c	parallels: support bitmap extension for read-only mode	2021-03-08 14:56:55 +01:00
parallels.c	parallels: support bitmap extension for read-only mode	2021-03-08 14:56:55 +01:00
parallels.h	parallels: support bitmap extension for read-only mode	2021-03-08 14:56:55 +01:00
preallocate.c
progress_meter.c	progressmeter: protect with a mutex	2021-06-25 14:24:24 +03:00
qapi-sysemu.c
qapi.c	block: use GDateTime for formatting timestamp when dumping snapshot info	2021-06-14 13:28:50 +01:00
qcow2-bitmap.c	nbd patches for 2021-03-09	2021-03-11 13:57:08 +00:00
qcow2-cache.c
qcow2-cluster.c
qcow2-refcount.c
qcow2-snapshot.c	block: consistently use bdrv_is_read_only()	2021-06-02 14:23:20 +02:00
qcow2-threads.c
qcow2.c	qcow2: Fix dangling pointer after reopen for 'file'	2021-07-09 13:19:11 +02:00
qcow2.h	block/qcow2-bitmap: return status from qcow2_store_persistent_dirty_bitmaps	2021-03-08 16:03:21 -06:00
qcow.c
qed-check.c
qed-cluster.c
qed-l2-cache.c
qed-table.c
qed.c	block/qed: bdrv_qed_do_open: deal with errp	2021-03-08 16:03:32 -06:00
qed.h
quorum.c	block/quorum: Provide .bdrv_co_flush instead of .bdrv_co_flush_to_disk	2021-06-02 14:23:20 +02:00
raw-format.c
rbd.c	block/rbd: fix type of task->complete	2021-07-09 12:26:05 +02:00
replication.c	replication: Remove workaround	2021-07-20 16:11:53 +02:00
snapshot.c	block/snapshot: Clarify goto fallback behavior	2021-06-24 09:49:04 +02:00
ssh.c	util/uri: do not check argument of uri_free()	2021-07-09 12:26:05 +02:00
stream.c	stream: Don't crash when node permission is denied	2021-03-19 10:15:06 +01:00
throttle-groups.c
throttle.c
trace-events	block: add trace point when fdatasync fails	2021-06-14 13:28:50 +01:00
trace.h
vdi.c	block/vdi: Don't assume that blocks are larger than VdiHeader	2021-03-31 10:44:21 +01:00
vhdx-endian.c
vhdx-log.c	block: consistently use bdrv_is_read_only()	2021-06-02 14:23:20 +02:00
vhdx.c
vhdx.h
vmdk.c
vpc.c
vvfat.c	block/vvfat: fix: drop backing	2021-07-20 16:30:20 +02:00
win32-aio.c
write-threshold.c	write-threshold: deal with includes	2021-05-14 16:14:10 +02:00