[PATCH v3 00/12] block/export: vhost-user-blk server tests and input validation

[Stefan Hajnoczi <stefanha@redhat.com>]

v3:
 * Rebased onto qemu.git/master (7ef8134565dc)
 * I asked Coiby Xu for clarification on a comment about vhost-user-blk-test in
   v2. Please wait for that discussion to finish before merging.

v2:
 * Add abrt handler that terminates qemu-storage-daemon to
   vhost-user-blk-test. No more orphaned processes on test failure. [Peter]
 * Fix sector number calculation in vhost-user-blk-server.c
 * Introduce VIRTIO_BLK_SECTOR_BITS/SIZE to make code clearer [Max]
 * Fix vhost-user-blk-server.c blk_size double byteswap
 * Fix vhost-user-blk blkcfg->num_queues endianness [Peter]
 * Squashed cleanups into Coiby vhost-user-blk-test commit so the code is
   easier to review

The vhost-user-blk server test was already in Michael Tsirkin's recent vhost
pull request, but was dropped because it exposed vhost-user regressions
(b7c1bd9d7848 and the Based-on tag below). Now that the vhost-user regressions
are fixed we can re-introduce the test case.

This series adds missing input validation that led to a Coverity report. The
virtio-blk read, write, discard, and write zeroes commands need to check
sector/byte ranges and other inputs. This solves the issue Peter Maydell raised
in "[PATCH for-5.2] block/export/vhost-user-blk-server.c: Avoid potential
integer overflow".

Merging just the input validation patches would be possible too, but I prefer
to merge the corresponding tests so the code is exercised by the CI.

Coiby Xu (1):
  test: new qTest case to test the vhost-user-blk-server

Stefan Hajnoczi (11):
  vhost-user-blk: fix blkcfg->num_queues endianness
  libqtest: add qtest_socket_server()
  libqtest: add qtest_kill_qemu()
  libqtest: add qtest_remove_abrt_handler()
  tests/qtest: add multi-queue test case to vhost-user-blk-test
  block/export: fix blk_size double byteswap
  block/export: use VIRTIO_BLK_SECTOR_BITS
  block/export: fix vhost-user-blk export sector number calculation
  block/export: port virtio-blk discard/write zeroes input validation
  vhost-user-blk-test: test discard/write zeroes invalid inputs
  block/export: port virtio-blk read/write range check

 MAINTAINERS                          |   2 +
 tests/qtest/libqos/libqtest.h        |  37 +
 tests/qtest/libqos/vhost-user-blk.h  |  48 ++
 block/export/vhost-user-blk-server.c | 150 +++-
 hw/block/vhost-user-blk.c            |   7 +-
 tests/qtest/libqos/vhost-user-blk.c  | 130 ++++
 tests/qtest/libqtest.c               |  82 ++-
 tests/qtest/vhost-user-blk-test.c    | 983 +++++++++++++++++++++++++++
 tests/qtest/libqos/meson.build       |   1 +
 tests/qtest/meson.build              |   4 +
 10 files changed, 1385 insertions(+), 59 deletions(-)
 create mode 100644 tests/qtest/libqos/vhost-user-blk.h
 create mode 100644 tests/qtest/libqos/vhost-user-blk.c
 create mode 100644 tests/qtest/vhost-user-blk-test.c

-- 
2.29.2