On Sun, Oct 23, 2011 at 09:37:59AM +0200, Yonit Halperin wrote: > Hi, > > Sounds like https://bugzilla.redhat.com/show_bug.cgi?id=746950 and > https://bugs.freedesktop.org/show_bug.cgi?id=41858 > Alon's patch: > http://lists.freedesktop.org/archives/spice-devel/2011-September > /005369.html > Should solve it. >
Could you add comments about reproducing to the RH bug? the QE wants to know if it is user triggerable. Thanks. > Cheers, > Yonit. > On 10/21/2011 05:26 PM, Daniel P. Berrange wrote: > >In testing my patches for 'add_client' support with SPICE, I noticed > >deadlock in the QEMU/SPICE code. It only happens if I close a SPICE > >client and then immediately reconnect within about 1 second. If I > >wait a couple of seconds before reconnecting the SPICE client I don't > >see the deadlock. > > > >I'm using QEMU& SPICE git master, and GDB has this to say > > > >(gdb) thread apply all bt > > > >Thread 3 (Thread 0x7f269e142700 (LWP 17233)): > >#0 pthread_cond_wait@@GLIBC_2.3.2 () at > >../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165 > >#1 0x00000000004e80e9 in qemu_cond_wait (cond=<optimized out>, > >mutex=<optimized out>) > > at qemu-thread-posix.c:113 > >#2 0x0000000000556469 in qemu_kvm_wait_io_event (env=<optimized out>) > > at /home/berrange/src/virt/qemu/cpus.c:626 > >#3 qemu_kvm_cpu_thread_fn (arg=0x29217a0) at > >/home/berrange/src/virt/qemu/cpus.c:661 > >#4 0x0000003a83207b31 in start_thread (arg=0x7f269e142700) at > >pthread_create.c:305 > >#5 0x0000003a82edfd2d in clone () at > >../sysdeps/unix/sysv/linux/x86_64/clone.S:115 > > > >Thread 2 (Thread 0x7f26822fc700 (LWP 17234)): > >#0 __lll_lock_wait () at > >../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:140 > >#1 0x0000003a83209ad6 in _L_lock_752 () from /lib64/libpthread.so.0 > >#2 0x0000003a832099d7 in __pthread_mutex_lock (mutex=0x1182f60) at > >pthread_mutex_lock.c:65 > >#3 0x00000000004e7ec9 in qemu_mutex_lock (mutex=<optimized out>) at > >qemu-thread-posix.c:54 > >#4 0x0000000000507df5 in channel_event (event=3, info=0x2a3c610) at > >ui/spice-core.c:234 > >#5 0x00007f269f77be87 in reds_stream_free (s=0x2a3c590) at reds.c:4073 > >#6 0x00007f269f75b64f in red_channel_client_disconnect (rcc=0x7f267c069ec0) > >at red_channel.c:961 > >#7 0x00007f269f75a131 in red_peer_handle_incoming (handler=0x7f267c06a5a0, > >stream=0x2a3c590) > > at red_channel.c:150 > >#8 red_channel_client_receive (rcc=0x7f267c069ec0) at red_channel.c:158 > >#9 0x00007f269f761fbc in handle_channel_events (in_listener=0x7f267c06a5f8, > >events=<optimized out>) > > at red_worker.c:9566 > >#10 0x00007f269f776672 in red_worker_main (arg=<optimized out>) at > >red_worker.c:10813 > >#11 0x0000003a83207b31 in start_thread (arg=0x7f26822fc700) at > >pthread_create.c:305 > >#12 0x0000003a82edfd2d in clone () at > >../sysdeps/unix/sysv/linux/x86_64/clone.S:115 > > > >Thread 1 (Thread 0x7f269f72e9c0 (LWP 17232)): > >#0 0x0000003a8320e01d in read () at ../sysdeps/unix/syscall-template.S:82 > >#1 0x00007f269f75daaa in receive_data (n=4, in_buf=0x7fffe7a5a02c, fd=18) > >at red_worker.h:150 > >#2 read_message (message=0x7fffe7a5a02c, fd=18) at red_worker.h:163 > >#3 red_dispatcher_disconnect_cursor_peer (rcc=0x7f267c0c0f60) at > >red_dispatcher.c:157 > >#4 0x00007f269f75c20d in red_client_destroy (client=0x2a35400) at > >red_channel.c:1189 > >#5 0x00007f269f778335 in reds_client_disconnect (client=0x2a35400) at > >reds.c:624 > >---Type<return> to continue, or q<return> to quit--- > >#6 0x00007f269f75a131 in red_peer_handle_incoming (handler=0x2a35b50, > >stream=0x2b037d0) at red_channel.c:150 > >#7 red_channel_client_receive (rcc=0x2a35470) at red_channel.c:158 > >#8 0x00007f269f75b1e8 in red_channel_client_event (fd=<optimized out>, > >event=<optimized out>, > > data=<optimized out>) at red_channel.c:774 > >#9 0x000000000045e561 in fd_trampoline (chan=<optimized out>, > >cond=<optimized out>, opaque=<optimized out>) > > at iohandler.c:97 > >#10 0x0000003a84e427ed in g_main_dispatch (context=0x27fc510) at gmain.c:2441 > >#11 g_main_context_dispatch (context=0x27fc510) at gmain.c:3014 > >#12 0x00000000004c3da3 in glib_select_poll (err=false, xfds=0x7fffe7a5a2e0, > >wfds=0x7fffe7a5a260, rfds= > > 0x7fffe7a5a1e0) at /home/berrange/src/virt/qemu/vl.c:1495 > >#13 main_loop_wait (nonblocking=<optimized out>) at > >/home/berrange/src/virt/qemu/vl.c:1541 > >#14 0x000000000040fdd1 in main_loop () at > >/home/berrange/src/virt/qemu/vl.c:1570 > >#15 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) > > at /home/berrange/src/virt/qemu/vl.c:3563 > >(gdb) > > > > > > _______________________________________________ > Spice-devel mailing list > Spice-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/spice-devel _______________________________________________ Spice-devel mailing list Spice-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/spice-devel
