[likely not kvm related, CC'ing the appropriate community] On 2012-08-23 18:16, Mike Gerber wrote: > Hi, > > I'm using a KVM guest to stream audio using darkice to an icecast2 server on the > same guest. The guest uses an emulated ES1370 sound card to capture the host's > audio input (ASUS Xonar DX) using the ALSA backend. After 1 or 2 days, the > qemu-kvm process locks up, using up 100% CPU, apparently spinning in > audio/rate_template.h (See gdb session below). > > Do you have any advice on how to solve this problem? > > I haven't tried the -no-kvm-* switches, please advice if that would be useful > in this case. Unfortunately it takes up to 2 days for the bug to happen, so > trying all possible configurations is a bit time-consuming. > > More information here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=685353 > > Thank you for your time, > Mike > > cpu model: AMD Turion(tm) II Neo N40L Dual-Core Processor > qemu-kvm version: 1.1.1 (Debian package by Michael Tokarev), > happened also with 1.1.0 > host: Debian wheezy, 3.2.23, x86_64 > guest: Debian wheezy, 3.2.23, x86_64 > > /usr/bin/kvm -S -M pc-1.1 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 > -name mp3 -uuid 25d2b76c-9533-c55a-b5e2-07da213886f1 -nodefconfig -nodefaults > -chardev > socket,id=charmonitor,path=/var/lib/libvirt/qemu/mp3.monitor,server,nowait -mon > chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device > piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive > file=/dev/vg_vms/lv_mp3,if=none,id=drive-virtio-disk0,format=raw -device > virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 > -netdev tap,fd=20,id=hostnet0 -device > virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:b1:e7:80,bus=pci.0,addr=0x3 > -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 > -vnc 127.0.0.1:0 -vga cirrus -device ES1370,id=sound0,bus=pci.0,addr=0x6 -device > i6300esb,id=watchdog0,bus=pci.0,addr=0x7 -watchdog-action reset -device > virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 > > gdb output (truncated, full output at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=685353) > > (gdb) info threads > Id Target Id Frame > 2 Thread 0x7fccec446700 (LWP 19893) "kvm" 0x00007fccf3f5fcec in __lll_lock_wait () from /lib/x86_64-linux-gnu/libpthread.so.0 > * 1 Thread 0x7fccf7c8c8e0 (LWP 19892) "kvm" st_rate_flow (opaque=0x7fccf9248f40, ibuf=0x7fccf9150320, obuf=0x7fccf91975b0, isamp=isamp@entry=0x7fffe9ff6550, > osamp=osamp@entry=0x7fffe9ff6554) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h:75 > (gdb) thread apply all bt full > > Thread 2 (Thread 0x7fccec446700 (LWP 19893)): > #0 0x00007fccf3f5fcec in __lll_lock_wait () from /lib/x86_64-linux-gnu/libpthread.so.0 > No symbol table info available. > #1 0x00007fccf3f5b339 in _L_lock_926 () from /lib/x86_64-linux-gnu/libpthread.so.0 > No symbol table info available. > #2 0x00007fccf3f5b15b in pthread_mutex_lock () from /lib/x86_64-linux-gnu/libpthread.so.0 > No symbol table info available. > #3 0x00007fccf7f18c29 in qemu_mutex_lock (mutex=mutex@entry=0x7fccf8c39a80) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/qemu-thread-posix.c:54 > err = <optimized out> > __func__ = "qemu_mutex_lock" > #4 0x00007fccf7f729f0 in qemu_mutex_lock_iothread () at /tmp/buildd/qemu-kvm-1.1.1+dfsg/cpus.c:897 > No locals. > #5 0x00007fccf7f9a0b6 in kvm_cpu_exec (env=env@entry=0x7fccf902d510) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/kvm-all.c:1268 > run = 0x7fccf7d80000 > ret = <optimized out> > run_ret = 0 > #6 0x00007fccf7f71591 in qemu_kvm_cpu_thread_fn (arg=0x7fccf902d510) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/cpus.c:752 > env = 0x7fccf902d510 > r = <optimized out> > #7 0x00007fccf3f58b50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 > No symbol table info available. > #8 0x00007fccf3ca370d in clone () from /lib/x86_64-linux-gnu/libc.so.6 > No symbol table info available. > #9 0x0000000000000000 in ?? () > No symbol table info available. > > Thread 1 (Thread 0x7fccf7c8c8e0 (LWP 19892)): > #0 st_rate_flow (opaque=0x7fccf9248f40, ibuf=0x7fccf9150320, obuf=0x7fccf91975b0, isamp=isamp@entry=0x7fffe9ff6550, osamp=osamp@entry=0x7fffe9ff6554) > at /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h:75 > rate = 0x7fccf9248f40 > istart = 0x7fccf9148810 > iend = 0x7fccf91730c0 > ostart = 0x7fccf91975b0 > oend = 0x7fccf9197870 > ilast = {l = -50003968, r = 171704320} > icur = <optimized out> > out = <optimized out> > t = <optimized out> > #1 0x00007fccf7e08a96 in audio_pcm_sw_read (sw=0x7fccf9260bf0, buf=0x7fffe9ff65d0, size=<optimized out>) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/audio.c:952 > hw = 0x7fccf924aa20 > samples = <optimized out> > live = <optimized out> > ret = <optimized out> > swlim = <optimized out> > isamp = 10891 > osamp = 44 > rpos = 0 > total = <optimized out> > src = <optimized out> > dst = <optimized out> > __FUNCTION__ = "audio_pcm_sw_read" > #2 0x00007fccf7e9ac0a in es1370_transfer_audio (s=s@entry=0x7fccf90a9470, d=0x7fccf90a9988, loop_sel=32768, max=<optimized out>, irq=irq@entry=0x7fffe9ff7624) > at /tmp/buildd/qemu-kvm-1.1.1+dfsg/hw/es1370.c:803 > acquired = <optimized out> > to_copy = 4096 > tmpbuf = "\344\002\230\017f\002\006\022\243\001~\021\230\000\000\r\251\377\035\005z\377{\374O\000\332\365\320\001\032\362\224\003]\360U\005\330\357\347\006\375\357i\b\\\360\062\n\273\360h\f9\361\263\016\070\362N\020\336\363`\020\233\365H\016{\366\357\n\234\366\351\a|\366\365\005\065\366\364\004n\365\230\004\372\363\242\004B\362\320\004\026\361\346\004\365\360\363\004\214\361\017\005E\362\323\004\034\363C\004\246\364\304\003\374\366\306\003\\\371p\004W\372\222\005\341\370\343\006\004\365\067\b\357\357}\t\202\353m\n\330\351\256\n\254\354C\n\226\362\024\t\346\367P\a\341\372\313\005\064\374\063\005\353\374\230\005y\375\221\006\336\375\270\a\025\376\366\b#\376>\n\367\375\062\v\372\375}\v\271\376P\v\357\377\357\n\t\001\256\n\213\001\023\v\033\001]\f\203\377\032\016\316\374R\017a\371Y\0 > 17\330\365\357\r,\363 \v\273\362\v\bA\364\215\005\210\366{\003n\370a\001\220\371=\377T\372\\\375v\373\372\373f\375T\373\275\377\265\373h\001\352\374\264\001$\376\340\000\312\376$\377\300\376\204\374a\376[\371\032\376H\366\a\376\t\364\363\375n\363\254\375\032\365\063\375\316\370\217\374P\375G\3---Type <return> to continue, or q <return> to quit--- > 74q\000\240\374z\000\025\375t\375\061\375\375\370\n\375\346\364\027\375\363\361\275\375\363\357\365\376\316\356%\000&\357V\000R\361\066\377\374\363\205\375\300\365\277\374\376\366\344\375\033\370\220\000\037\371v\003\332\371\223\005\367\371\274\006\063\371U\a\272\367\304\a@\366W\b\\\365\372\b\323\364\352\b\322\363\071\b\032\362f\a\275\357\306\006\353\354\200\006\357\351\211\006\060\347"... > addr = 1021014016 > sc = 1023 > csc_bytes = 4096 > cnt = 7168 > size = 16383 > left = <optimized out> > transferred = <optimized out> > temp = 4096 > index = 2 > #3 0x00007fccf7e9af54 in es1370_run_channel (s=0x7fccf90a9470, chan=<optimized out>, free_or_avail=<optimized out>) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/hw/es1370.c:877 > new_status = 96 > max_bytes = <optimized out> > irq = <optimized out> > d = <optimized out> > b = 0x7fccf833ec30 > #4 0x00007fccf7e0a4e7 in audio_run_in (s=<optimized out>) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/audio.c:1487 > sw = 0x7fccf9260bf0 > captured = <optimized out> > hw = <optimized out> > #5 audio_run (msg=msg@entry=0x7fccf80529d1 "alsa run (running)") at /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/audio.c:1546 > s = 0x7fccf84029c0 > #6 0x00007fccf7e04b91 in alsa_poll_handler (opaque=0x7fccf924aaa8) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/alsaaudio.c:233 > err = <optimized out> > count = <optimized out> > state = <optimized out> > revents = 1 > #7 0x00007fccf7e5b406 in qemu_iohandler_poll (readfds=readfds@entry=0x7fccf880f060, writefds=writefds@entry=0x7fccf880f0e0, xfds=xfds@entry=0x7fccf880f160, ret=ret@entry=1) > at /tmp/buildd/qemu-kvm-1.1.1+dfsg/iohandler.c:122 > pioh = 0x7fccf90e7990 > ioh = 0x7fccf9274e40 > #8 0x00007fccf7eedb6a in main_loop_wait (nonblocking=<optimized out>) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/main-loop.c:497 > ret = 1 > timeout = 4294967295 > #9 0x00007fccf7dfd943 in main_loop () at /tmp/buildd/qemu-kvm-1.1.1+dfsg/vl.c:1566 > nonblocking = <optimized out> > last_io = 1 > #10 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at /tmp/buildd/qemu-kvm-1.1.1+dfsg/vl.c:3702 > i = <optimized out> > snapshot = 0 > linux_boot = <optimized out> > icount_option = 0x0 > initrd_filename = <optimized out> > kernel_filename = <optimized out> > kernel_cmdline = <optimized out> > boot_devices = "cad", '\000' <repeats 29 times> > ds = 0x7fccf90470b0 > dcl = <optimized out> > cyls = 0 > heads = 0 > secs = 0 > translation = 0 > hda_opts = <optimized out> > opts = <optimized out> > machine_opts = <optimized out> > olist = <optimized out> > optind = 48 > optarg = 0x7fffe9ff8f67 "virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4" > loadvm = 0x0 > machine = 0x7fccf83fdb60 > ---Type <return> to continue, or q <return> to quit--- > cpu_model = 0x0 > vga_model = 0x7fffe9ff8ee4 "cirrus" > pid_file = 0x0 > incoming = 0x0 > defconfig = <optimized out> > userconfig = false > log_mask = 0x0 > log_file = 0x0 > mem_trace = {malloc = 0x7fccf7ee6c40 <malloc_and_trace>, realloc = 0x7fccf7ee6c00 <realloc_and_trace>, free = 0x7fccf7ee6bc0 <free_and_trace>, calloc = 0, try_malloc = 0, > try_realloc = 0} > trace_events = 0x0 > trace_file = 0x0 > (gdb) step > 73 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 75 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 71 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 72 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 73 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 75 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 73 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 75 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 71 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) > 72 in /tmp/buildd/qemu-kvm-1.1.1+dfsg/audio/rate_template.h > (gdb) -- Siemens AG, Corporate Technology, CT RTC ITP SDP-DE Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
