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Re: [Qemu-devel] [PULL for-2.4 0/4] Block patches
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PULL for-2.4 0/4] Block patches |
Date: |
Tue, 21 Jul 2015 10:04:03 +0100 |
On 20 July 2015 at 19:05, Stefan Hajnoczi <address@hidden> wrote:
> The following changes since commit f73ca7363440240b7ee5ee7f7ddb1c64751efb54:
>
> Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
> (2015-07-20 13:25:28 +0100)
>
> are available in the git repository at:
>
> git://github.com/stefanha/qemu.git tags/block-pull-request
>
> for you to fetch changes up to 4fefb0d50cd0a803bba3cedaeb9adfb80cc61fed:
>
> AioContext: fix broken ctx->dispatching optimization (2015-07-20 17:14:22
> +0100)
>
> ----------------------------------------------------------------
>
> ----------------------------------------------------------------
>
> Fam Zheng (1):
> mirror: Speed up bitmap initial scanning
>
> Paolo Bonzini (3):
> tests: remove irrelevant assertions from test-aio
> aio-win32: reorganize polling loop
> AioContext: fix broken ctx->dispatching optimization
I'm afraid this seems to cause 'make check' to hang on one
of the PPC tests:
QTEST_QEMU_BINARY=ppc-softmmu/qemu-system-ppc QTEST_QEMU_IMG=qemu-img
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$((RANDOM % 255 + 1))} gtester -k
--verbose -m=quick tests/endianness-test tests/boot-order-test
tests/qom-test
TEST: tests/endianness-test... (pid=27216)
/ppc/endianness/g3beige: OK
/ppc/endianness/split/g3beige: OK
/ppc/endianness/combine/g3beige: OK
/ppc/endianness/prep: OK
/ppc/endianness/split/prep: OK
/ppc/endianness/combine/prep: OK
/ppc/endianness/bamboo: OK
/ppc/endianness/split/bamboo: OK
/ppc/endianness/combine/bamboo: OK
PASS: tests/endianness-test
TEST: tests/boot-order-test... (pid=27228)
/ppc/boot-order/prep: OK
/ppc/boot-order/pmac_oldworld:
(and then it just sits there. Seen on x86-64/Linux and OSX hosts.)
Backtrace from connecting a gdb to it:
(gdb) thread apply all bt
Thread 3 (Thread 0x2ac8d2d5f700 (LWP 17911)):
#0 __lll_lock_wait () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1 0x00002ac8c6310657 in _L_lock_909 () from
/lib/x86_64-linux-gnu/libpthread.so.0
#2 0x00002ac8c6310480 in __GI___pthread_mutex_lock
(mutex=0x2ac8be8dad00 <qemu_global_mutex>) at
../nptl/pthread_mutex_lock.c:79
#3 0x00002ac8be3a9f89 in qemu_mutex_lock
(address@hidden <qemu_global_mutex>) at
/home/petmay01/linaro/qemu-for-merges/util/qemu-thread-posix.c:73
#4 0x00002ac8be0554a4 in qemu_mutex_lock_iothread () at
/home/petmay01/linaro/qemu-for-merges/cpus.c:1164
#5 0x00002ac8be3ba33e in call_rcu_thread (opaque=<optimised out>) at
/home/petmay01/linaro/qemu-for-merges/util/rcu.c:241
#6 0x00002ac8c630e182 in start_thread (arg=0x2ac8d2d5f700) at
pthread_create.c:312
#7 0x00002ac8c661e47d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111
Thread 2 (Thread 0x2ac8d33ac700 (LWP 17912)):
#0 0x00002ac8c63160d1 in do_sigwait (sig=0x2ac8d33ab99c,
set=<optimised out>) at
../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:60
#1 __sigwait (address@hidden,
address@hidden) at
../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:97
#2 0x00002ac8be055937 in qemu_dummy_cpu_thread_fn
(arg=0x2ac8bed53450) at
/home/petmay01/linaro/qemu-for-merges/cpus.c:1016
#3 0x00002ac8c630e182 in start_thread (arg=0x2ac8d33ac700) at
pthread_create.c:312
#4 0x00002ac8c661e47d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111
Thread 1 (Thread 0x2ac8be572680 (LWP 17910)):
#0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00002ac8be3aa5f2 in futex_wait (val=4294967295,
ev=0x2ac8be669708) at
/home/petmay01/linaro/qemu-for-merges/util/qemu-thread-posix.c:301
#2 qemu_event_wait (address@hidden) at
/home/petmay01/linaro/qemu-for-merges/util/qemu-thread-posix.c:399
#3 0x00002ac8be325e41 in qemu_clock_enable
(address@hidden, address@hidden) at
/home/petmay01/linaro/qemu-for-merges/qemu-timer.c:167
#4 0x00002ac8be055d22 in pause_all_vcpus () at
/home/petmay01/linaro/qemu-for-merges/cpus.c:1200
#5 0x00002ac8be01491d in main_loop_should_exit () at
/home/petmay01/linaro/qemu-for-merges/vl.c:1864
#6 main_loop () at /home/petmay01/linaro/qemu-for-merges/vl.c:1906
#7 main (argc=<optimised out>, argv=<optimised out>, envp=<optimised
out>) at /home/petmay01/linaro/qemu-for-merges/vl.c:4653
thanks
-- PMM