From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
tu bo <tubo@linux.vnet.ibm.com>, Fam Zheng <famz@redhat.com>,
qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
cornelia.huck@de.ibm.com, Stefan Hajnoczi <stefanha@redhat.com>,
qemu-block@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/4] Tweaks around virtio-blk start/stop
Date: Thu, 17 Mar 2016 17:08:59 +0100 [thread overview]
Message-ID: <56EAD69B.10107@de.ibm.com> (raw)
In-Reply-To: <56EACA64.9060402@de.ibm.com>
Good (or bad?) news is the assert also triggers on F23, it just seems to take longer.
trace 1 (compiled on F20)
Thread 5 (Thread 0x3ff84b7f910 (LWP 33030)):
#0 0x000003ff86a817b8 in ppoll () at /lib64/libc.so.6
#1 0x00000000102c712e in qemu_poll_ns (fds=0x3ff80001e70, nfds=3, timeout=-1) at /home/cborntra/REPOS/qemu/qemu-timer.c:313
#2 0x00000000102c96d6 in aio_poll (ctx=0x10a7b050, blocking=true) at /home/cborntra/REPOS/qemu/aio-posix.c:453
#3 0x000000001014fb1e in iothread_run (opaque=0x10a7ab10) at /home/cborntra/REPOS/qemu/iothread.c:46
#4 0x000003ff86b87c2c in start_thread () at /lib64/libpthread.so.0
#5 0x000003ff86a8ec9a in thread_start () at /lib64/libc.so.6
Thread 4 (Thread 0x3ff8537f910 (LWP 33029)):
#0 0x000003ff86a8841e in syscall () at /lib64/libc.so.6
#1 0x000000001039cbe8 in futex_wait (ev=0x10a140ec <rcu_call_ready_event>, val=4294967295) at /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:292
#2 0x000000001039ce1e in qemu_event_wait (ev=0x10a140ec <rcu_call_ready_event>) at /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:399
#3 0x00000000103b9678 in call_rcu_thread (opaque=0x0) at /home/cborntra/REPOS/qemu/util/rcu.c:250
#4 0x000003ff86b87c2c in start_thread () at /lib64/libpthread.so.0
#5 0x000003ff86a8ec9a in thread_start () at /lib64/libc.so.6
Thread 3 (Thread 0x3ff66428910 (LWP 33041)):
#0 0x000003ff86a8334a in ioctl () at /lib64/libc.so.6
#1 0x000000001007b97a in kvm_vcpu_ioctl (cpu=0x10b15970, type=44672) at /home/cborntra/REPOS/qemu/kvm-all.c:1984
#2 0x000000001007b2f0 in kvm_cpu_exec (cpu=0x10b15970) at /home/cborntra/REPOS/qemu/kvm-all.c:1834
#3 0x000000001005bd92 in qemu_kvm_cpu_thread_fn (arg=0x10b15970) at /home/cborntra/REPOS/qemu/cpus.c:1050
#4 0x000003ff86b87c2c in start_thread () at /lib64/libpthread.so.0
#5 0x000003ff86a8ec9a in thread_start () at /lib64/libc.so.6
Thread 2 (Thread 0x3ff885dbb90 (LWP 32970)):
#0 0x000003ff86a817b8 in ppoll () at /lib64/libc.so.6
#1 0x00000000102c7244 in qemu_poll_ns (fds=0x10a77a90, nfds=5, timeout=965000000) at /home/cborntra/REPOS/qemu/qemu-timer.c:325
#2 0x00000000102c5ef2 in os_host_main_loop_wait (timeout=965000000) at /home/cborntra/REPOS/qemu/main-loop.c:251
#3 0x00000000102c6006 in main_loop_wait (nonblocking=0) at /home/cborntra/REPOS/qemu/main-loop.c:505
#4 0x00000000101667e4 in main_loop () at /home/cborntra/REPOS/qemu/vl.c:1933
#5 0x000000001016e8ea in main (argc=72, argv=0x3ffe977e978, envp=0x3ffe977ebc0) at /home/cborntra/REPOS/qemu/vl.c:4656
Thread 1 (Thread 0x3ff66c28910 (LWP 33033)):
#0 0x000003ff869be2c0 in raise () at /lib64/libc.so.6
#1 0x000003ff869bfc26 in abort () at /lib64/libc.so.6
#2 0x000003ff869b5bce in __assert_fail_base () at /lib64/libc.so.6
#3 0x000003ff869b5c5c in () at /lib64/libc.so.6
#4 0x00000000100ab8f2 in virtio_blk_handle_output (vdev=0x10ad57e8, vq=0x10eec270) at /home/cborntra/REPOS/qemu/hw/block/virtio-blk.c:595
#5 0x00000000100e18a4 in virtio_queue_notify_vq (vq=0x10eec270) at /home/cborntra/REPOS/qemu/hw/virtio/virtio.c:1095
#6 0x00000000100e1906 in virtio_queue_notify (vdev=0x10ad57e8, n=0) at /home/cborntra/REPOS/qemu/hw/virtio/virtio.c:1101
#7 0x00000000100f921c in virtio_ccw_hcall_notify (args=0x10e2aad0) at /home/cborntra/REPOS/qemu/hw/s390x/s390-virtio-ccw.c:66
#8 0x00000000100ee518 in s390_virtio_hypercall (env=0x10e2aac0) at /home/cborntra/REPOS/qemu/hw/s390x/s390-virtio-hcall.c:35
#9 0x000000001014192e in handle_hypercall (cpu=0x10e227f0, run=0x3ff84280000) at /home/cborntra/REPOS/qemu/target-s390x/kvm.c:1283
#10 0x0000000010141c36 in handle_diag (cpu=0x10e227f0, run=0x3ff84280000, ipb=83886080) at /home/cborntra/REPOS/qemu/target-s390x/kvm.c:1352
#11 0x00000000101431b6 in handle_instruction (cpu=0x10e227f0, run=0x3ff84280000) at /home/cborntra/REPOS/qemu/target-s390x/kvm.c:1799
#12 0x00000000101433ee in handle_intercept (cpu=0x10e227f0) at /home/cborntra/REPOS/qemu/target-s390x/kvm.c:1842
#13 0x0000000010143c22 in kvm_arch_handle_exit (cs=0x10e227f0, run=0x3ff84280000) at /home/cborntra/REPOS/qemu/target-s390x/kvm.c:2028
#14 0x000000001007b5aa in kvm_cpu_exec (cpu=0x10e227f0) at /home/cborntra/REPOS/qemu/kvm-all.c:1921
#15 0x000000001005bd92 in qemu_kvm_cpu_thread_fn (arg=0x10e227f0) at /home/cborntra/REPOS/qemu/cpus.c:1050
#16 0x000003ff86b87c2c in start_thread () at /lib64/libpthread.so.0
#17 0x000003ff86a8ec9a in thread_start () at /lib64/libc.so.6
trace 2 (compiled on F23)
Thread 5 (Thread 0x3ffb897f910 (LWP 37895)):
#0 0x000003ffba00841e in syscall () at /lib64/libc.so.6
#1 0x00000000803d5306 in futex_wait (ev=0x80a4a104 <rcu_call_ready_event>, val=4294967295) at /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:292
#2 0x00000000803d5596 in qemu_event_wait (ev=0x80a4a104 <rcu_call_ready_event>) at /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:399
#3 0x00000000803f2c3c in call_rcu_thread (opaque=0x0) at /home/cborntra/REPOS/qemu/util/rcu.c:250
#4 0x000003ffba107c2c in start_thread () at /lib64/libpthread.so.0
#5 0x000003ffba00ec9a in thread_start () at /lib64/libc.so.6
Thread 4 (Thread 0x3ffb574a910 (LWP 37907)):
#0 0x000003ffba00334a in ioctl () at /lib64/libc.so.6
#1 0x0000000080081a44 in kvm_vcpu_ioctl (cpu=0x80b4b970, type=44672) at /home/cborntra/REPOS/qemu/kvm-all.c:1984
#2 0x000000008008130c in kvm_cpu_exec (cpu=0x80b4b970) at /home/cborntra/REPOS/qemu/kvm-all.c:1834
#3 0x000000008006074c in qemu_kvm_cpu_thread_fn (arg=0x80b4b970) at /home/cborntra/REPOS/qemu/cpus.c:1050
#4 0x000003ffba107c2c in start_thread () at /lib64/libpthread.so.0
#5 0x000003ffba00ec9a in thread_start () at /lib64/libc.so.6
Thread 3 (Thread 0x3ffb5f4a910 (LWP 37906)):
#0 0x000003ffb9f3f5b2 in sigtimedwait () at /lib64/libc.so.6
#1 0x000000008005fcda in qemu_kvm_eat_signals (cpu=0x80e587f0) at /home/cborntra/REPOS/qemu/cpus.c:804
#2 0x00000000800605fc in qemu_kvm_wait_io_event (cpu=0x80e587f0) at /home/cborntra/REPOS/qemu/cpus.c:1019
#3 0x000000008006077a in qemu_kvm_cpu_thread_fn (arg=0x80e587f0) at /home/cborntra/REPOS/qemu/cpus.c:1055
#4 0x000003ffba107c2c in start_thread () at /lib64/libpthread.so.0
#5 0x000003ffba00ec9a in thread_start () at /lib64/libc.so.6
Thread 2 (Thread 0x3ffbbbdbb90 (LWP 37839)):
#0 0x000003ffba110cd4 in __lll_lock_wait () at /lib64/libpthread.so.0
#1 0x000003ffba113ed4 in __lll_lock_elision () at /lib64/libpthread.so.0
#2 0x00000000803d49d6 in qemu_mutex_lock (mutex=0x8061f260 <qemu_global_mutex>) at /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:64
#3 0x0000000080060ef4 in qemu_mutex_lock_iothread () at /home/cborntra/REPOS/qemu/cpus.c:1226
#4 0x00000000802eeae4 in os_host_main_loop_wait (timeout=1291000000) at /home/cborntra/REPOS/qemu/main-loop.c:254
#5 0x00000000802eebf6 in main_loop_wait (nonblocking=0) at /home/cborntra/REPOS/qemu/main-loop.c:505
#6 0x000000008017b4bc in main_loop () at /home/cborntra/REPOS/qemu/vl.c:1933
#7 0x00000000801839aa in main (argc=72, argv=0x3ffda07e4b8, envp=0x3ffda07e700) at /home/cborntra/REPOS/qemu/vl.c:4656
Thread 1 (Thread 0x3ffb817f910 (LWP 37897)):
#0 0x000003ffb9f3e2c0 in raise () at /lib64/libc.so.6
#1 0x000003ffb9f3fc26 in abort () at /lib64/libc.so.6
#2 0x000003ffb9f35bce in __assert_fail_base () at /lib64/libc.so.6
#3 0x000003ffb9f35c5c in () at /lib64/libc.so.6
#4 0x00000000800b4ee2 in virtio_blk_handle_output (vdev=0x80e51468, vq=0x80f3e280) at /home/cborntra/REPOS/qemu/hw/block/virtio-blk.c:595
#5 0x00000000800ef434 in virtio_queue_notify_vq (vq=0x80f3e280) at /home/cborntra/REPOS/qemu/hw/virtio/virtio.c:1095
#6 0x00000000800f1cf4 in virtio_queue_host_notifier_read (n=0x80f3e2d8) at /home/cborntra/REPOS/qemu/hw/virtio/virtio.c:1785
#7 0x00000000802f1cdc in aio_dispatch (ctx=0x80ab1050) at /home/cborntra/REPOS/qemu/aio-posix.c:327
#8 0x00000000802f2662 in aio_poll (ctx=0x80ab1050, blocking=false) at /home/cborntra/REPOS/qemu/aio-posix.c:475
#9 0x0000000080163942 in iothread_run (opaque=0x80ab0b10) at /home/cborntra/REPOS/qemu/iothread.c:46
#10 0x000003ffba107c2c in start_thread () at /lib64/libpthread.so.0
#11 0x000003ffba00ec9a in thread_start () at /lib64/libc.so.6
(gdb)
next prev parent reply other threads:[~2016-03-17 16:09 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 10:10 [Qemu-devel] [PATCH 0/4] Tweaks around virtio-blk start/stop Fam Zheng
2016-03-16 10:10 ` [Qemu-devel] [PATCH 1/4] block: Use drained section in bdrv_set_aio_context Fam Zheng
2016-03-16 10:27 ` Paolo Bonzini
2016-03-16 10:51 ` Fam Zheng
2016-03-16 10:10 ` [Qemu-devel] [PATCH 2/4] block-backend: Introduce blk_drained_begin/end Fam Zheng
2016-03-16 10:10 ` [Qemu-devel] [PATCH 3/4] virtio-blk: Use blk_drained_begin/end around dataplane stop Fam Zheng
2016-03-16 10:10 ` [Qemu-devel] [PATCH 4/4] virtio-blk: Clean up start/stop with mutex and BH Fam Zheng
2016-03-17 15:00 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2016-03-17 15:07 ` Paolo Bonzini
2016-03-22 12:52 ` Fam Zheng
2016-03-22 18:05 ` Paolo Bonzini
2016-03-23 8:10 ` Cornelia Huck
2016-03-23 9:08 ` Paolo Bonzini
2016-03-23 9:12 ` Christian Borntraeger
2016-03-24 8:19 ` tu bo
2016-03-24 8:32 ` Cornelia Huck
2016-03-24 8:47 ` Cornelia Huck
2016-03-24 9:31 ` Cornelia Huck
2016-03-16 10:28 ` [Qemu-devel] [PATCH 0/4] Tweaks around virtio-blk start/stop Paolo Bonzini
2016-03-16 10:49 ` Christian Borntraeger
2016-03-16 11:09 ` Paolo Bonzini
2016-03-16 11:24 ` Christian Borntraeger
2016-03-16 12:55 ` Paolo Bonzini
2016-03-16 13:38 ` Christian Borntraeger
2016-03-16 13:45 ` Paolo Bonzini
2016-03-17 0:39 ` Fam Zheng
2016-03-17 11:03 ` tu bo
2016-03-21 10:57 ` Fam Zheng
2016-03-21 11:15 ` Cornelia Huck
2016-03-21 12:45 ` Fam Zheng
2016-03-21 13:02 ` Cornelia Huck
2016-03-21 23:45 ` Fam Zheng
2016-03-22 8:06 ` Cornelia Huck
2016-03-22 7:10 ` tu bo
2016-03-22 7:18 ` Fam Zheng
2016-03-22 9:07 ` Cornelia Huck
2016-03-22 9:46 ` Paolo Bonzini
2016-03-22 11:59 ` Cornelia Huck
2016-03-22 12:11 ` Paolo Bonzini
2016-03-22 12:54 ` Cornelia Huck
2016-03-17 12:22 ` tu bo
2016-03-17 12:39 ` Christian Borntraeger
2016-03-17 13:02 ` Cornelia Huck
2016-03-17 15:02 ` Paolo Bonzini
2016-03-17 15:07 ` Christian Borntraeger
2016-03-17 15:15 ` Christian Borntraeger
2016-03-17 15:16 ` Christian Borntraeger
2016-03-17 16:08 ` Christian Borntraeger [this message]
2016-03-18 15:03 ` Paolo Bonzini
2016-03-21 9:42 ` Fam Zheng
2016-03-21 11:10 ` Christian Borntraeger
2016-03-21 12:17 ` Cornelia Huck
2016-03-21 13:47 ` TU BO
2016-03-21 13:54 ` Paolo Bonzini
2016-03-21 14:19 ` Cornelia Huck
2016-03-22 0:31 ` Fam Zheng
2016-03-16 11:32 ` Cornelia Huck
2016-03-16 11:48 ` Paolo Bonzini
2016-03-16 11:56 ` Cornelia Huck
2016-03-16 11:59 ` Paolo Bonzini
2016-03-16 12:22 ` Cornelia Huck
2016-03-16 12:32 ` Paolo Bonzini
2016-03-16 12:42 ` Cornelia Huck
2016-03-16 12:49 ` Paolo Bonzini
2016-03-16 13:04 ` Cornelia Huck
2016-03-16 13:10 ` Paolo Bonzini
2016-03-16 13:14 ` Cornelia Huck
2016-03-16 13:15 ` Paolo Bonzini
2016-03-16 11:52 ` Cornelia Huck
2016-03-16 11:54 ` Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=56EAD69B.10107@de.ibm.com \
--to=borntraeger@de.ibm.com \
--cc=cornelia.huck@de.ibm.com \
--cc=famz@redhat.com \
--cc=kwolf@redhat.com \
--cc=mst@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-block@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@redhat.com \
--cc=tubo@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).