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qemu/block
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Kevin Wolf a55402d5c3 block: Fix crash after setting latency historygram with single bin 
Passing an empty list of boundaries to block-latency-histogram-set sets
up a state that leads to a NULL pointer dereference when the next
request should be accounted for. This is not a useful configuration, so
just error out if the user tries to set it.

The crash can easily be reproduced with the following script:

    qmp() {
    cat <<EOF
    {'execute':'qmp_capabilities'}
    {'execute':'block-latency-histogram-set',
     'arguments': {'id':'ide0','boundaries':[]}}
    {'execute':'cont'}
    EOF
    }

    qmp | ./qemu-system-x86_64 -S -qmp stdio \
        -drive if=none,format=raw,file=null-co:// \
        -device ide-hd,drive=none0,id=ide0

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20260331102608.60882-1-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2026-03-31 15:47:52 +02:00
..
export
vhost-user-blk-server: fix opt_io_size=1 causing severe Windows I/O degradation
2026-03-31 15:45:32 +02:00
monitor
hmp_nbd_server_start: Don't ask for backing image data
2026-03-04 11:47:44 +01:00
accounting.c
block: Fix crash after setting latency historygram with single bin
2026-03-31 15:47:52 +02:00
aio_task.c
block: rename block/aio.h to qemu/aio.h
2025-12-27 10:11:12 +01:00
amend.c
block: Mark BlockDriver callbacks for amend job GRAPH_RDLOCK
2023-05-10 14:16:54 +02:00
backup.c
block: add bdrv_graph_wrlock_drained() convenience wrapper
2025-07-14 15:40:58 +02:00
blkdebug.c
blkdebug: Use error_setg_file_open() for a better error message
2026-01-07 11:26:57 +01:00
blkio.c
include: reorganize memory API headers
2025-12-27 10:11:09 +01:00
blklogwrites.c
bswap: Include missing 'qemu/bswap.h' header
2026-01-22 10:48:45 +01:00
blkreplay.c
blkreplay: Run BH in coroutine’s AioContext
2025-11-18 18:01:55 +01:00
blkverify.c
block: add bdrv_graph_wrlock_drained() convenience wrapper
2025-07-14 15:40:58 +02:00
block-backend.c
include: move hw/qdev-core.h to hw/core/, rename
2025-12-27 10:11:07 +01:00
block-copy.c
include: Rename sysemu/ -> system/
2024-12-20 17:44:56 +01:00
block-gen.h
block-coroutine-wrapper.py: support also basic return types
2022-12-15 16:07:43 +01:00
block-ram-registrar.c
include: Rename sysemu/ -> system/
2024-12-20 17:44:56 +01:00
bochs.c
block: replace TABs with space
2025-11-11 22:06:09 +01:00
cloop.c
block: Take graph lock for most of .bdrv_open
2023-11-08 17:56:18 +01:00
commit.c
block/commit: mark commit_abort() as GRAPH_UNLOCKED
2025-07-14 15:42:13 +02:00
copy-before-write.c
block: Expand block status mode from bool to flags
2025-05-14 15:33:34 -05:00
copy-before-write.h
blockdev-backup: Add error handling option for copy-before-write jobs
2025-05-12 18:19:31 +03:00
copy-on-read.c
qapi: Move include/qapi/qmp/ to include/qobject/
2025-02-10 15:33:16 +01:00
copy-on-read.h
block: Mark bdrv_(un)freeze_backing_chain() and callers GRAPH_RDLOCK
2023-11-07 19:14:19 +01:00
coroutines.h
block: Expand block status mode from bool to flags
2025-05-14 15:33:34 -05:00
create.c
qemu/compiler: Absorb 'clang-tsa.h'
2025-03-06 14:21:25 +01:00
crypto.c
error: Consistently name Error * objects err, and not errp
2026-01-07 11:26:57 +01:00
crypto.h
block: Support detached LUKS header creation using qemu-img
2024-02-09 12:50:37 +00:00
curl.c
block/curl: free s->password in cleanup paths
2026-03-24 17:34:49 +01:00
dirty-bitmap.c
block: Mark bdrv_*_dirty_bitmap() and callers GRAPH_RDLOCK
2023-02-23 19:49:32 +01:00
dmg-bz2.c
Include qemu-common.h exactly where needed
2019-06-12 13:20:20 +02:00
dmg-lzfse.c
block/dmg: Ignore C99 prototype declaration mismatch from <lzfse.h>
2023-03-30 15:03:36 +02:00
dmg.c
block: Protect bs->file with graph_lock
2023-11-08 17:56:18 +01:00
dmg.h
block/dmg: Declare a type definition for DMG uncompress function
2023-04-24 13:53:44 -04:00
file-posix.c
block: Move qemu_fcntl_addfl() into osdep.c
2026-03-10 12:11:43 +01:00
file-win32.c
block/file-win32: Improve an error message
2026-01-08 07:50:32 +01:00
filter-compress.c
block: Take graph lock for most of .bdrv_open
2023-11-08 17:56:18 +01:00
gluster.c
gluster: Do not move coroutine into BDS context
2025-11-18 18:01:50 +01:00
graph-lock.c
block: add bdrv_graph_wrlock_drained() convenience wrapper
2025-07-14 15:40:58 +02:00
io_uring.c
io-uring: Resubmit tails of short writes
2026-03-24 19:55:09 +01:00
io.c
block: Drop use of Stat64
2026-01-17 10:46:42 +11:00
iscsi-opts.c
modules: add block module annotations
2021-07-09 18:20:27 +02:00
iscsi.c
iscsi: Create AIO BH in original AioContext
2025-11-18 18:01:57 +01:00
linux-aio.c
linux-aio: Resubmit tails of short reads/writes
2026-03-24 17:34:49 +01:00
meson.build
include: Rename sysemu/ -> system/
2024-12-20 17:44:56 +01:00
mirror.c
block/mirror: fix assertion failure upon duplicate complete for job using 'replaces'
2026-03-17 12:31:54 +01:00
nbd.c
treewide: handle result of qio_channel_set_blocking()
2025-09-19 12:46:07 +01:00
nfs.c
block/nfs: add support for libnfs v6
2026-03-10 14:33:55 +01:00
null.c
null-aio: Run CB in original AioContext
2025-11-18 18:01:57 +01:00
nvme.c
Revert "nvme: Fix coroutine waking"
2025-12-15 09:50:41 -05:00
parallels-ext.c
bswap: Include missing 'qemu/bswap.h' header
2026-01-22 10:48:45 +01:00
parallels.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
parallels.h
block: Protect bs->file with graph_lock
2023-11-08 17:56:18 +01:00
preallocate.c
block: Protect bs->file with graph_lock
2023-11-08 17:56:18 +01:00
progress_meter.c
coroutine: Clean up superfluous inclusion of qemu/lockable.h
2023-01-19 10:18:28 +01:00
qapi-system.c
qapi: Move include/qapi/qmp/ to include/qobject/
2025-02-10 15:33:16 +01:00
qapi.c
block: Wire up 'flat' mode also for 'query-block'
2026-03-04 11:47:44 +01:00
qcow2-bitmap.c
block/qcow2-bitmap: Replace g_memdup() by g_memdup2()
2024-05-08 19:11:34 +02:00
qcow2-cache.c
qcow2: Mark qcow2_signal_corruption() and callers GRAPH_RDLOCK
2023-10-12 16:31:33 +02:00
qcow2-cluster.c
qcow2: put discards in discard queue when discard-no-unref is enabled
2025-11-11 22:06:09 +01:00
qcow2-refcount.c
qcow2: put discards in discard queue when discard-no-unref is enabled
2025-11-11 22:06:09 +01:00
qcow2-snapshot.c
include: Rename sysemu/ -> system/
2024-12-20 17:44:56 +01:00
qcow2-threads.c
thread-pool: avoid passing the pool parameter every time
2023-04-25 13:17:28 +02:00
qcow2.c
qcow2: Simplify size round-up in co_create_opts
2026-03-06 17:45:15 +01:00
qcow2.h
bswap: Include missing 'qemu/bswap.h' header
2026-01-22 10:48:45 +01:00
qcow.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
qed-check.c
qed: mark more functions as coroutine_fns and GRAPH_RDLOCK
2023-06-28 09:46:20 +02:00
qed-cluster.c
qed: protect table cache with CoMutex
2017-07-17 11:34:11 +08:00
qed-l2-cache.c
osdep: Move memalign-related functions to their own header
2022-03-07 13:16:49 +00:00
qed-table.c
block: use bdrv_co_debug_event in coroutine context
2023-06-28 09:46:34 +02:00
qed.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
qed.h
block: Protect bs->file with graph_lock
2023-11-08 17:56:18 +01:00
quorum.c
block: add bdrv_graph_wrlock_drained() convenience wrapper
2025-07-14 15:40:58 +02:00
raw-format.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
rbd.c
rbd: Run co BH CB in the coroutine’s AioContext
2025-11-18 18:01:50 +01:00
replication.c
block: mark bdrv_reopen_queue() and bdrv_reopen_multiple() as GRAPH_UNLOCKED
2025-07-14 15:42:05 +02:00
reqlist.c
block/reqlist: allow adding overlapping requests
2024-09-30 10:53:18 +03:00
snapshot-access.c
block: Expand block status mode from bool to flags
2025-05-14 15:33:34 -05:00
snapshot.c
block: add bdrv_graph_wrlock_drained() convenience wrapper
2025-07-14 15:40:58 +02:00
ssh.c
ssh: Run restart_coroutine in current AioContext
2025-11-18 18:01:55 +01:00
stream.c
block/stream: mark stream_prepare() as GRAPH_UNLOCKED
2025-07-14 15:42:04 +02:00
throttle-groups.c
throttle-group: Fix race condition in throttle_group_restart_queue()
2026-03-16 16:55:18 +01:00
throttle.c
block: Take graph lock for most of .bdrv_open
2023-11-08 17:56:18 +01:00
trace-events
io-uring: Resubmit tails of short writes
2026-03-24 19:55:09 +01:00
trace.h
trace: switch position of headers to what Meson requires
2020-08-21 06:18:24 -04:00
vdi.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
vhdx-endian.c
Include qemu-common.h exactly where needed
2019-06-12 13:20:20 +02:00
vhdx-log.c
vhdx: Take locks for accessing bs->file
2023-11-08 17:56:18 +01:00
vhdx.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
vhdx.h
vhdx: Take locks for accessing bs->file
2023-11-08 17:56:18 +01:00
vmdk.c
block/vmdk: fix OOB read in vmdk_read_extent()
2026-03-03 14:45:01 +01:00
vpc.c
block: Allow drivers to control protocol prefix at creation
2025-11-11 22:06:09 +01:00
vvfat.c
Fix const qualifier build errors with recent glibc
2025-12-09 21:00:15 +01:00
win32-aio.c
block: rename block/aio.h to qemu/aio.h
2025-12-27 10:11:12 +01:00
write-threshold.c
block: remove AioContext locking
2023-12-21 22:49:27 +01:00