On 09/05/2017 18:03, Jeff Cody wrote: > On Tue, May 09, 2017 at 11:15:06AM +0100, Richard W.M. Jones wrote: >> >> No I'm afraid this patch series does not fix the bug. >> >> The stack trace is below. >> >> Rich. >> > > I'm looking through qemu-defel, and I'm not finding a reference to the bug > mentioned. Maybe I'm just missing it... can you describe the bug or point > me to the relevant email thread?
"Re: [Qemu-devel] [PULL 1/4] curl: do not use aio_context_acquire/release" FWIW, Rich reported that patches 1-3 do work. I'll look into the problems with patch 4 tomorrow. Paolo > > Thanks, > Jeff > >> Thread 4 (Thread 0x7f8595cf1700 (LWP 11235)): >> #0 0x00007f86348e6700 in do_futex_wait () at /lib64/libpthread.so.0 >> #1 0x00007f86348e6813 in __new_sem_wait_slow () at /lib64/libpthread.so.0 >> #2 0x00005610e458519f in qemu_sem_timedwait (sem=sem@entry=0x5610e5db7508, >> ms=ms@entry=10000) at util/qemu-thread-posix.c:255 >> #3 0x00005610e458043c in worker_thread (opaque=0x5610e5db74a0) >> at util/thread-pool.c:92 >> #4 0x00007f86348dd36d in start_thread () at /lib64/libpthread.so.0 >> #5 0x00007f862e830e0f in clone () at /lib64/libc.so.6 >> >> Thread 3 (Thread 0x7f8621347700 (LWP 10865)): >> #0 0x00007f862e826837 in ioctl () at /lib64/libc.so.6 >> #1 0x00005610e4216387 in kvm_vcpu_ioctl (cpu=cpu@entry=0x5610e60f2030, >> type=type@entry=44672) at /home/rjones/d/qemu/kvm-all.c:2154 >> #2 0x00005610e42164be in kvm_cpu_exec (cpu=cpu@entry=0x5610e60f2030) >> at /home/rjones/d/qemu/kvm-all.c:1992 >> #3 0x00005610e4202f94 in qemu_kvm_cpu_thread_fn (arg=0x5610e60f2030) >> at /home/rjones/d/qemu/cpus.c:1118 >> #4 0x00007f86348dd36d in start_thread () at /lib64/libpthread.so.0 >> #5 0x00007f862e830e0f in clone () at /lib64/libc.so.6 >> >> Thread 2 (Thread 0x7f8626559700 (LWP 10863)): >> #0 0x00007f862e82b7a9 in syscall () at /lib64/libc.so.6 >> #1 0x00005610e4585325 in qemu_futex_wait (val=<optimized out>, f=<optimized >> out>) at /home/rjones/d/qemu/include/qemu/futex.h:26 >> #2 0x00005610e4585325 in qemu_event_wait (ev=ev@entry=0x5610e5019ee4 >> <rcu_call_ready_event>) at util/qemu-thread-posix.c:399 >> #3 0x00005610e459539e in call_rcu_thread (opaque=<optimized out>) >> at util/rcu.c:249 >> #4 0x00007f86348dd36d in start_thread () at /lib64/libpthread.so.0 >> #5 0x00007f862e830e0f in clone () at /lib64/libc.so.6 >> >> Thread 1 (Thread 0x7f863757dc80 (LWP 10861)): >> #0 0x00007f862e824dc6 in ppoll () at /lib64/libc.so.6 >> #1 0x00005610e4580ea9 in ppoll (__ss=0x0, __timeout=0x0, __nfds=<optimized >> out>, __fds=<optimized out>) at /usr/include/bits/poll2.h:77 >> #2 0x00005610e4580ea9 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized >> out>, timeout=timeout@entry=-1) at util/qemu-timer.c:322 >> #3 0x00005610e4582af4 in aio_poll (ctx=ctx@entry=0x5610e5d92860, >> blocking=<optimized out>) at util/aio-posix.c:622 >> #4 0x00007f8624848299 in curl_init_state (bs=<optimized out>, >> s=s@entry=0x5610e5defb10) at block/curl.c:490 >> #5 0x00007f8624848a51 in curl_readv_bh_cb (p=0x5610e78afb70) >> at block/curl.c:871 >> #6 0x00005610e457fb1e in aio_bh_call (bh=0x5610e6128f10) at util/async.c:90 >> #7 0x00005610e457fb1e in aio_bh_poll (ctx=ctx@entry=0x5610e5d92860) >> at util/async.c:118 >> #8 0x00005610e4582cf4 in aio_poll (ctx=ctx@entry=0x5610e5d92860, >> blocking=<optimized out>) at util/aio-posix.c:682 >> #9 0x00007f8624848299 in curl_init_state (bs=<optimized out>, >> s=s@entry=0x5610e5defb10) at block/curl.c:490 >> #10 0x00007f8624848a51 in curl_readv_bh_cb (p=0x5610e6f01380) >> at block/curl.c:871 >> #11 0x00005610e457fb1e in aio_bh_call (bh=0x5610e6e1fff0) at util/async.c:90 >> #12 0x00005610e457fb1e in aio_bh_poll (ctx=ctx@entry=0x5610e5d92860) >> at util/async.c:118 >> #13 0x00005610e4582cf4 in aio_poll (ctx=ctx@entry=0x5610e5d92860, >> blocking=<optimized out>) at util/aio-posix.c:682 >> #14 0x00007f8624848299 in curl_init_state (bs=<optimized out>, >> s=s@entry=0x5610e5defb10) at block/curl.c:490 >> #15 0x00007f8624848a51 in curl_readv_bh_cb (p=0x5610e77d6ec0) >> at block/curl.c:871 >> #16 0x00005610e457fb1e in aio_bh_call (bh=0x5610e7229960) at util/async.c:90 >> #17 0x00005610e457fb1e in aio_bh_poll (ctx=ctx@entry=0x5610e5d92860) >> at util/async.c:118 >> #18 0x00005610e4582cf4 in aio_poll (ctx=ctx@entry=0x5610e5d92860, >> blocking=<optimized out>) at util/aio-posix.c:682 >> #19 0x00007f8624848299 in curl_init_state (bs=<optimized out>, >> s=s@entry=0x5610e5defb10) at block/curl.c:490 >> #20 0x00007f8624848a51 in curl_readv_bh_cb (p=0x5610e7877220) >> at block/curl.c:871 >> #21 0x00005610e457fb1e in aio_bh_call (bh=0x5610e7054e20) at util/async.c:90 >> #22 0x00005610e457fb1e in aio_bh_poll (ctx=ctx@entry=0x5610e5d92860) >> at util/async.c:118 >> #23 0x00005610e4582cf4 in aio_poll (ctx=ctx@entry=0x5610e5d92860, >> blocking=<optimized out>) at util/aio-posix.c:682 >> #24 0x00007f8624848299 in curl_init_state (bs=<optimized out>, >> s=s@entry=0x5610e5defb10) at block/curl.c:490 >> #25 0x00007f8624848a51 in curl_readv_bh_cb (p=0x5610e7903cb0) >> at block/curl.c:871 >> #26 0x00005610e457fb1e in aio_bh_call (bh=0x5610e7903d10) at util/async.c:90 >> #27 0x00005610e457fb1e in aio_bh_poll (ctx=ctx@entry=0x5610e5d92860) >> at util/async.c:118 >> #28 0x00005610e4582cf4 in aio_poll (ctx=ctx@entry=0x5610e5d92860, >> blocking=<optimized out>) at util/aio-posix.c:682 >> #29 0x00007f8624848299 in curl_init_state (bs=<optimized out>, >> s=s@entry=0x5610e5defb10) at block/curl.c:490 >> #30 0x00007f8624848a51 in curl_readv_bh_cb (p=0x5610e7146fb0) >> at block/curl.c:871 >> #31 0x00005610e457fb1e in aio_bh_call (bh=0x5610e70593d0) at util/async.c:90 >> #32 0x00005610e457fb1e in aio_bh_poll (ctx=ctx@entry=0x5610e5d92860) >> at util/async.c:118 >> #33 0x00005610e45829c0 in aio_dispatch (ctx=0x5610e5d92860) >> at util/aio-posix.c:429 >> #34 0x00005610e457f9fe in aio_ctx_dispatch (source=<optimized out>, >> callback=<optimized out>, user_data=<optimized out>) at util/async.c:261 >> #35 0x00007f863235d1d7 in g_main_context_dispatch () at >> /lib64/libglib-2.0.so.0 >> #36 0x00005610e4581c17 in glib_pollfds_poll () at util/main-loop.c:213 >> #37 0x00005610e4581c17 in os_host_main_loop_wait (timeout=<optimized out>) >> at util/main-loop.c:261 >> #38 0x00005610e4581c17 in main_loop_wait (nonblocking=<optimized out>) >> at util/main-loop.c:517 >> #39 0x00005610e41c3ad1 in main_loop () at vl.c:1899 >> #40 0x00005610e41c3ad1 in main (argc=<optimized out>, argv=<optimized out>, >> envp=<optimized out>) at vl.c:4719 >> >> >> -- >> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones >> Read my programming and virtualization blog: http://rwmj.wordpress.com >> virt-p2v converts physical machines to virtual machines. Boot with a >> live CD or over the network (PXE) and turn machines into KVM guests. >> http://libguestfs.org/virt-v2v
