Re: [Qemu-devel] [PULL 00/28] testing/next (system tests, docker, iotests)

[Peter Maydell <peter.maydell@linaro.org>]

On Tue, 28 May 2019 at 10:49, Alex Bennée <alex.bennee@linaro.org> wrote:
>
> The following changes since commit a7b21f6762a2d6ec08106d8a7ccb11829914523f:
>
>   Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.1-pull-request' into staging (2019-05-24 12:47:49 +0100)
>
> are available in the Git repository at:
>
>   https://github.com/stsquad/qemu.git tags/pull-testing-next-280519-1
>
> for you to fetch changes up to 4a344d91083e351c1c5ac877c0ab215335a1e23d:
>
>   tests: Run the iotests during "make check" again (2019-05-28 10:28:51 +0100)
>
> ----------------------------------------------------------------
> Various testing updates
>
>   - semihosting re-factor (used in system tests)
>   - aarch64 and alpha system tests
>   - editorconfig tweak for .S
>   - some docker image updates
>   - iotests clean-up and make check inclusion
>

Hi; this fails 'make check' on the clang sanitiser build for Linux x86-64.
It looks like the code in qemu-imo-cmds.c is incorrectly doing
a division-by-zero if the operation it is reporting on took
less than a second...

make: Entering directory '/home/petmay01/linaro/qemu-for-merges/build/clang'
/home/petmay01/linaro/qemu-for-merges/tests/check-block.sh
  TEST    iotest-qcow2: 001
  TEST    iotest-qcow2: 002
  TEST    iotest-qcow2: 003
  TEST    iotest-qcow2: 004
  TEST    iotest-qcow2: 005
  TEST    iotest-qcow2: 007
  TEST    iotest-qcow2: 008
  TEST    iotest-qcow2: 009
  TEST    iotest-qcow2: 010
  TEST    iotest-qcow2: 011
  TEST    iotest-qcow2: 012
--- /home/petmay01/linaro/qemu-for-merges/tests/qemu-iotests/013.out
 2014-12-15 11:11:04.234972929 +0000
+++ /home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/013.out.bad
   2019-05-28 14:06:57.827692927 +010
0
@@ -17596,6 +17596,7 @@

 With offset 0:
 === IO: pattern 0
+/home/petmay01/linaro/qemu-for-merges/qemu-io-cmds.c:264:18: runtime
error: division by zero
 read 4096/4096 bytes at offset 0
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 read 4096/4096 bytes at offset 4096
@@ -21994,6 +21995,7 @@
 No errors were found on the image.
 With offset 4294967296:
 === IO: pattern 0
+/home/petmay01/linaro/qemu-for-merges/qemu-io-cmds.c:264:18: runtime
error: division by zero
 read 4096/4096 bytes at offset 4294967296
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 read 4096/4096 bytes at offset 4294971392
  TEST    iotest-qcow2: 013 [fail]
QEMU          --
"/home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x8
6_64" -nodefaults -machine accel=qtest
QEMU_IMG      --
"/home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/../../qemu-img"
QEMU_IO       --
"/home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/../../qemu-io"
 --cache writeback -
f qcow2
QEMU_NBD      --
"/home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/../../qemu-nbd"
IMGFMT        -- qcow2 (compat=1.1)
IMGPROTO      -- file
PLATFORM      -- Linux/x86_64 e104462 4.15.0-48-generic
TEST_DIR      --
/home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/scratch
SOCKET_SCM_HELPER --
/home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/socket_scm_helper

--- /home/petmay01/linaro/qemu-for-merges/tests/qemu-iotests/013.out
 2014-12-15 11:11:04.234972929 +0000
+++ /home/petmay01/linaro/qemu-for-merges/build/clang/tests/qemu-iotests/013.out.bad
   2019-05-28 14:06:57.827692927 +0100
@@ -17596,6 +17596,7 @@

 With offset 0:
 === IO: pattern 0
+/home/petmay01/linaro/qemu-for-merges/qemu-io-cmds.c:264:18: runtime
error: division by zero
 read 4096/4096 bytes at offset 0
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 read 4096/4096 bytes at offset 4096
@@ -21994,6 +21995,7 @@
 No errors were found on the image.
 With offset 4294967296:
 === IO: pattern 0
+/home/petmay01/linaro/qemu-for-merges/qemu-io-cmds.c:264:18: runtime
error: division by zero
 read 4096/4096 bytes at offset 4294967296
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 read 4096/4096 bytes at offset 4294971392

thanks
-- PMM