On 11/11/2016 22:09, Samuel Thibault wrote:
Ooh, I see. Now it's obvious, now that it's not coming from the tcb
loop:) Could you try the attached patch?
It looks like it now goes into an infinite loop when a connection is
closed. Packer output stopped here:
...
2016/11/12 09:29:04 ui: qemu: Get:33
http://us.archive.ubuntu.com/ubuntu xenial-backports/universe i386
Packages [2,212 B]
qemu: Get:33 http://us.archive.ubuntu.com/ubuntu
xenial-backports/universe i386 Packages [2,212 B]
2016/11/12 09:29:04 ui: qemu: Get:34
http://us.archive.ubuntu.com/ubuntu xenial-backports/universe
Translation-en [1,144 B]
qemu: Get:34 http://us.archive.ubuntu.com/ubuntu
xenial-backports/universe Translation-en [1,144 B]
top shows:
4828 nsrc 20 0 4688860 796236 9136 R 100.0 2.4 0:30.16
qemu-system-x86
strace doesn't show anything:
# strace -p 4828
strace: Process 4828 attached
strace: [ Process PID=4828 runs in x32 mode. ]
So I sent a SIGABRT, here is the backtrace:
Core was generated by `/usr/local/bin/qemu-system-x86_64 -m 4G -drive
if=none,file=output-qemu-vtp-nmm'.
Program terminated with signal SIGABRT, Aborted.
#0 sofree (so=so@entry=0x564b181fc940) at
/home/nsrc/qemu-2.7.0/slirp/socket.c:74
74 if (ifm->ifq_so == so) {
[Current thread is 1 (Thread 0x7f9308610a80 (LWP 4828))]
(gdb) bt
#0 sofree (so=so@entry=0x564b181fc940) at
/home/nsrc/qemu-2.7.0/slirp/socket.c:74
#1 0x0000564b14d8428f in tcp_close (tp=tp@entry=0x564b16287590)
at /home/nsrc/qemu-2.7.0/slirp/tcp_subr.c:334
#2 0x0000564b14d82dc8 in tcp_input (m=0x564b182d9000, iphlen=<optimised
out>, inso=inso@entry=0x0,
af=af@entry=2) at /home/nsrc/qemu-2.7.0/slirp/tcp_input.c:1201
#3 0x0000564b14d7bc2b in ip_input (m=<optimised out>,
m@entry=0x564b182d9000)
at /home/nsrc/qemu-2.7.0/slirp/ip_input.c:206
#4 0x0000564b14d7e440 in slirp_input (slirp=<optimised out>,
pkt=0x7f92ba4fc412 "RU\n",
pkt_len=pkt_len@entry=54) at /home/nsrc/qemu-2.7.0/slirp/slirp.c:867
#5 0x0000564b14d73fc0 in net_slirp_receive (nc=<optimised out>,
buf=<optimised out>, size=54)
at /home/nsrc/qemu-2.7.0/net/slirp.c:118
#6 0x0000564b14d69b19 in nc_sendv_compat (flags=<optimised out>,
iovcnt=<optimised out>,
iov=0x7ffd6b417e00, nc=0x564b16293840) at
/home/nsrc/qemu-2.7.0/net/net.c:701
#7 qemu_deliver_packet_iov (sender=<optimised out>, flags=<optimised
out>, iov=0x7ffd6b417e00,
iovcnt=<optimised out>, opaque=0x564b16293840) at
/home/nsrc/qemu-2.7.0/net/net.c:728
#8 0x0000564b14d6c8db in qemu_net_queue_deliver_iov (iovcnt=1,
iov=0x7ffd6b417e00, flags=0,
sender=0x564b17db26d0, queue=0x564b16293290) at
/home/nsrc/qemu-2.7.0/net/queue.c:179
#9 qemu_net_queue_send_iov (queue=0x564b16293290,
sender=0x564b17db26d0, flags=flags@entry=0,
iov=iov@entry=0x7ffd6b417e00, iovcnt=iovcnt@entry=1,
sent_cb=sent_cb@entry=0x564b14b94690 <virtio_net_tx_complete>)
at /home/nsrc/qemu-2.7.0/net/queue.c:224
#10 0x0000564b14d6a5f3 in qemu_sendv_packet_async (sender=<optimised out>,
iov=iov@entry=0x7ffd6b417e00, iovcnt=iovcnt@entry=1,
sent_cb=sent_cb@entry=0x564b14b94690 <virtio_net_tx_complete>)
at /home/nsrc/qemu-2.7.0/net/net.c:764
#11 0x0000564b14b94429 in virtio_net_flush_tx (q=q@entry=0x564b17db2600)
at /home/nsrc/qemu-2.7.0/hw/net/virtio-net.c:1282
#12 0x0000564b14b94625 in virtio_net_tx_bh (opaque=0x564b17db2600)
at /home/nsrc/qemu-2.7.0/hw/net/virtio-net.c:1387
#13 0x0000564b14da951d in aio_bh_call (bh=<optimised out>) at
/home/nsrc/qemu-2.7.0/async.c:67
#14 aio_bh_poll (ctx=ctx@entry=0x564b1627e060) at
/home/nsrc/qemu-2.7.0/async.c:95
---Type <return> to continue, or q <return> to quit---
#15 0x0000564b14db3930 in aio_dispatch (ctx=0x564b1627e060) at
/home/nsrc/qemu-2.7.0/aio-posix.c:308
#16 0x0000564b14da93de in aio_ctx_dispatch (source=<optimised out>,
callback=<optimised out>,
user_data=<optimised out>) at /home/nsrc/qemu-2.7.0/async.c:234
#17 0x00007f93079121a7 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x0000564b14db220b in glib_pollfds_poll () at
/home/nsrc/qemu-2.7.0/main-loop.c:213
#19 os_host_main_loop_wait (timeout=<optimised out>) at
/home/nsrc/qemu-2.7.0/main-loop.c:258
#20 main_loop_wait (nonblocking=<optimised out>) at
/home/nsrc/qemu-2.7.0/main-loop.c:506
#21 0x0000564b14b1d431 in main_loop () at /home/nsrc/qemu-2.7.0/vl.c:1908
#22 main (argc=<optimised out>, argv=<optimised out>, envp=<optimised out>)
at /home/nsrc/qemu-2.7.0/vl.c:4604
(gdb)
Regards,
Brian.
