[PATCH for-5.2 00/10] block/export: vhost-user-blk server tests and input validation

[Stefan Hajnoczi]

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.

Based-on: 20201109174355.1069147-1-stefanha@redhat.com ("[PATCH for-5.2] 
vhost-user: fix VHOST_USER_ADD/REM_MEM_REG truncation")

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

Stefan Hajnoczi (9):
  tests/qtest: add multi-queue test case to vhost-user-blk-test
  libqtest: add qtest_socket_server()
  vhost-user-blk-test: rename destroy_drive() to destroy_file()
  vhost-user-blk-test: close fork child file descriptors
  vhost-user-blk-test: drop unused return value
  vhost-user-blk-test: fix races by using fd passing
  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

 tests/qtest/libqos/libqtest.h        |  25 +
 tests/qtest/libqos/vhost-user-blk.h  |  48 ++
 block/export/vhost-user-blk-server.c | 129 +++-
 tests/qtest/libqos/vhost-user-blk.c  | 129 ++++
 tests/qtest/libqtest.c               |  76 ++-
 tests/qtest/vhost-user-blk-test.c    | 965 +++++++++++++++++++++++++++
 tests/qtest/libqos/meson.build       |   1 +
 tests/qtest/meson.build              |   2 +
 8 files changed, 1333 insertions(+), 42 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

-- 
2.28.0