Re: [Qemu-block] Aborts in iotest 169

[Vladimir Sementsov-Ogievskiy]

23.01.2019 18:48, Max Reitz wrote:
> Hi,
> 
> When running 169 in parallel (e.g. like so:
> 
> $ while TEST_DIR=/tmp/t0 ./check -T -qcow2 169; do; done
> $ while TEST_DIR=/tmp/t1 ./check -T -qcow2 169; do; done
> $ while TEST_DIR=/tmp/t2 ./check -T -qcow2 169; do; done
> $ while TEST_DIR=/tmp/t3 ./check -T -qcow2 169; do; done
> 
> in four different shells), I get aborts:
> 
> (Often I get segfaults, but that's because of
> http://lists.nongnu.org/archive/html/qemu-devel/2018-12/msg05579.html --
> feel free to apply the attached patch to make them go away)

Hi,

Didn't you send it in separate? iotests still fails sometimes with segfault
in chardev code...

> 
> 
> WARNING:qemu:qemu received signal 6:
> build/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64
> -chardev socket,id=mon,path=/tmp/t0/tmpbX30XU/qemua-25745-monitor.sock
> -mon chardev=mon,mode=control -display none -vga none -qtest
> unix:path=/tmp/t0/qemua-25745-qtest.sock -machine accel=qtest
> -nodefaults -machine accel=qtest -drive
> if=virtio,id=drive0,file=/tmp/t0/disk_a,format=qcow2,cache=writeback
> .................E..
> ======================================================================
> ERROR:
> test_do_test_migration_resume_source_not_persistent__not_migbitmap
> (__main__.TestDirtyBitmapMigration)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>    File "169", line 206, in <lambda>
>      setattr(klass, 'test_' + method + name, lambda self: mc(self))
>    File "169", line 113, in do_test_migration_resume_source
>      self.check_bitmap(self.vm_a, sha256)
>    File "169", line 72, in check_bitmap
>      node='drive0', name='bitmap0')
>    File "tests/qemu-iotests/../../scripts/qemu.py", line 369, in qmp
>      return self._qmp.cmd(cmd, args=qmp_args)
>    File "tests/qemu-iotests/../../scripts/qmp/qmp.py", line 191, in cmd
>      return self.cmd_obj(qmp_cmd)
>    File "tests/qemu-iotests/../../scripts/qmp/qmp.py", line 174, in cmd_obj
>      resp = self.__json_read()
>    File "tests/qemu-iotests/../../scripts/qmp/qmp.py", line 82, in
> __json_read
>      data = self.__sockfile.readline()
>    File "/usr/lib64/python2.7/socket.py", line 451, in readline
>      data = self._sock.recv(self._rbufsize)
> error: [Errno 104] Connection reset by peer
> 
> ----------------------------------------------------------------------
> Ran 20 tests
> 
> FAILED (errors=1)
> 
> 
> Or:
> 
> WARNING:qemu:qemu received signal 6:
> build/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64
> -chardev socket,id=mon,path=/tmp/t3/tmp0pllWD/qemua-3445-monitor.sock
> -mon chardev=mon,mode=control -display none -vga none -qtest
> unix:path=/tmp/t3/qemua-3445-qtest.sock -machine accel=qtest -nodefaults
> -machine accel=qtest -drive
> if=virtio,id=drive0,file=/tmp/t3/disk_a,format=qcow2,cache=writeback
> WARNING:qemu:qemu received signal 6:
> build/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64
> -chardev socket,id=mon,path=/tmp/t3/tmp0pllWD/qemua-3445-monitor.sock
> -mon chardev=mon,mode=control -display none -vga none -qtest
> unix:path=/tmp/t3/qemua-3445-qtest.sock -machine accel=qtest -nodefaults
> -machine accel=qtest -drive
> if=virtio,id=drive0,file=/tmp/t3/disk_a,format=qcow2,cache=writeback
> 
> ...................F
> ======================================================================
> FAIL: test_do_test_migration_resume_source_persistent__not_migbitmap
> (__main__.TestDirtyBitmapMigration)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>    File "169", line 206, in <lambda>
>      setattr(klass, 'test_' + method + name, lambda self: mc(self))
>    File "169", line 125, in do_test_migration_resume_source
>      self.assertEqual(log, '')
> AssertionError: "qemu-system-x86_64: invalid runstate transition:
> 'running' -> 'postmigrate'\n" != ''
> 
> ----------------------------------------------------------------------
> Ran 20 tests
> 
> FAILED (failures=1)
> 
> 
> The backtrace always goes like this:
> 
> (gdb) bt
> #0  0x00007f0acf5cc53f in raise () at /lib64/libc.so.6
> #1  0x00007f0acf5b6895 in abort () at /lib64/libc.so.6
> #2  0x000055a46ebbb1a6 in runstate_set (new_state=RUN_STATE_POSTMIGRATE)
> at vl.c:742
> #3  0x000055a46ebbb1a6 in runstate_set
> (address@hidden) at vl.c:730
> #4  0x000055a46ed39129 in migration_iteration_finish (s=0x55a4708be000)
> at migration/migration.c:2972
> #5  0x000055a46ed39129 in migration_thread
> (address@hidden) at migration/migration.c:3130
> #6  0x000055a46eea665a in qemu_thread_start (args=<optimized out>) at
> util/qemu-thread-posix.c:502
> 
> 
> #7  0x00007f0acf76258e in start_thread () at /lib64/libpthread.so.0
> #8  0x00007f0acf6916a3 in clone () at /lib64/libc.so.6
> (gdb) frame 2
> #2  0x000055a46ebbb1a6 in runstate_set (new_state=RUN_STATE_POSTMIGRATE)
> at vl.c:742
> 742             abort();
> (gdb) print current_run_state
> $1 = RUN_STATE_RUNNING
> 
> 
> Neither of migration or runstates are my strong suite, so I thought I'd
> report it before diving into it.
> 
> Max
> 


-- 
Best regards,
Vladimir