[Pkg-utopia-maintainers] Bug#1100160: data-loop.0[27932]: segfault

Wed Mar 12 04:10:20 GMT 2025

Package: libspa-0.2-modules
Version: 1.4.0-1
Severity: important

Hey.

Since a while I see segfaults with some (but not all) videos when
playing them back via mpv (but not e.g. when playing back via ffplay).

The segfaults seem to happen in libspa-0.2-modules:
Mar 12 05:08:54 heisenberg kernel: data-loop.0[29809]: segfault at 0 ip 00007fca0e6443c9 sp 00007fc92efec2e8 error 4 in libc.so.6[1643c9,7fca0e508000+165000] likely on CPU 6 (core 12, socket 0)
Mar 12 05:08:54 heisenberg kernel: Code: 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 83 fa 20 72 27 <c5> fe 6f 06 48 83 fa 40 0f 87 a9 00 00 00 c5 fe 6f 4c 16 e0 c5 fe

Backtrace:
$ gdb --args mpv x.flv
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Reading symbols from mpv...
(No debugging symbols found in mpv)
(gdb) run
Starting program: /usr/bin/mpv x.flv
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fff61dff6c0 (LWP 29408)]
[New Thread 0x7fff615fe6c0 (LWP 29409)]
[New Thread 0x7fff60dfd6c0 (LWP 29410)]
[New Thread 0x7fff605fc6c0 (LWP 29411)]
[New Thread 0x7fff5fdfb6c0 (LWP 29412)]
[New Thread 0x7fff5f5fa6c0 (LWP 29413)]
[New Thread 0x7fff5edf96c0 (LWP 29414)]
[New Thread 0x7fff5e5f86c0 (LWP 29415)]
[New Thread 0x7fff5ddf76c0 (LWP 29416)]
[New Thread 0x7fff5d5f66c0 (LWP 29417)]
[New Thread 0x7fff5cdf56c0 (LWP 29418)]
[New Thread 0x7fff5c5f46c0 (LWP 29419)]
[New Thread 0x7fff5bdf36c0 (LWP 29420)]
[New Thread 0x7fff5b5f26c0 (LWP 29421)]
[New Thread 0x7fff5adf16c0 (LWP 29422)]
[New Thread 0x7fff5a5f06c0 (LWP 29423)]
[New Thread 0x7fff59def6c0 (LWP 29424)]
[New Thread 0x7fff595ee6c0 (LWP 29425)]
[New Thread 0x7fff58ded6c0 (LWP 29426)]
[New Thread 0x7fff53fff6c0 (LWP 29427)]
[New Thread 0x7fff537fe6c0 (LWP 29428)]
[New Thread 0x7fff52ffd6c0 (LWP 29429)]
[New Thread 0x7fff527fc6c0 (LWP 29430)]
[New Thread 0x7fff51bff6c0 (LWP 29431)]
[Thread 0x7fff5adf16c0 (LWP 29422) exited]
[Thread 0x7fff5b5f26c0 (LWP 29421) exited]
[Thread 0x7fff5bdf36c0 (LWP 29420) exited]
[Thread 0x7fff5c5f46c0 (LWP 29419) exited]
[Thread 0x7fff5cdf56c0 (LWP 29418) exited]
[Thread 0x7fff5d5f66c0 (LWP 29417) exited]
[Thread 0x7fff5ddf76c0 (LWP 29416) exited]
[Thread 0x7fff5e5f86c0 (LWP 29415) exited]
[Thread 0x7fff5edf96c0 (LWP 29414) exited]
[Thread 0x7fff5f5fa6c0 (LWP 29413) exited]
[Thread 0x7fff5fdfb6c0 (LWP 29412) exited]
[Thread 0x7fff605fc6c0 (LWP 29411) exited]
[Thread 0x7fff60dfd6c0 (LWP 29410) exited]
[Thread 0x7fff615fe6c0 (LWP 29409) exited]
[Thread 0x7fff61dff6c0 (LWP 29408) exited]
[Detaching after fork from child process 29432]
[Detaching after fork from child process 29433]
[Detaching after fork from child process 29434]
[New Thread 0x7fff5adf16c0 (LWP 29435)]
[Thread 0x7fff5adf16c0 (LWP 29435) exited]
[New Thread 0x7fff5adf16c0 (LWP 29436)]
● Video  --vid=1  (vp6f 640x480 25 fps)
● Audio  --aid=1  (mp3 1ch 22050 Hz 48 kbps)
[New Thread 0x7fff5b5f26c0 (LWP 29437)]
[New Thread 0x7fff5bdf36c0 (LWP 29438)]
[New Thread 0x7fff5c5f46c0 (LWP 29439)]
[New Thread 0x7fff5cf7f6c0 (LWP 29440)]
[New Thread 0x7fff513fe6c0 (LWP 29441)]
[New Thread 0x7fff50bfd6c0 (LWP 29442)]
[W][05:05:25.454926] pw.conf      | [          conf.c: 1204 pw_conf_load_conf_for_context()] setting config.name to client-rt.conf is deprecated, using client.conf
[New Thread 0x7fff47fff6c0 (LWP 29443)]
[New Thread 0x7fff477fe6c0 (LWP 29444)]
AO: [pipewire] 22050Hz mono 1ch floatp
VO: [gpu] 640x480 yuv420p
AV: 00:00:00 / 00:14:04 (0%) A-V: -0.040
Thread 35 "data-loop.0" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff477fe6c0 (LWP 29444)]
__memcpy_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:265
warning: 265	../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: No such file or directory
(gdb) bt
#0  __memcpy_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:265
#1  0x00007fff581676b7 in memcpy (__dest=<optimized out>, __src=<optimized out>, __len=252) at /usr/include/x86_64-linux-gnu/bits/string_fortified.h:29
#2  impl_native_process (r=0x555555a8c548, src=0x7fff477ed460, in_len=0x7fff477ed370, dst=0x555555a8c6c8, out_len=0x7fff477ed374) at ../spa/plugins/audioconvert/resample-native.c:229
#3  0x00007fff5814392d in run_resample_stage (s=<optimized out>, c=0x7fff477ed400) at ../spa/plugins/audioconvert/audioconvert.c:3322
#4  0x00007fff5814706f in impl_node_process (object=0x555555a6ee80) at ../spa/plugins/audioconvert/audioconvert.c:3842
#5  0x00007fff5812ceff in spa_node_process_fast (object=<optimized out>) at ../spa/include/spa/node/node.h:756
#6  impl_node_process (object=0x5555559cceb8) at ../spa/plugins/audioconvert/audioadapter.c:1810
#7  0x00007ffff34f35a7 in spa_node_process_fast (object=<optimized out>) at ../spa/include/spa/node/node.h:756
#8  process_node (data=data at entry=0x5555559cd440, nsec=nsec at entry=8608516051565) at ../src/pipewire/impl-node.c:1497
#9  0x00007ffff34f3a4e in node_on_fd_events (source=<optimized out>) at ../src/pipewire/impl-node.c:1574
#10 0x00007fff5ec9fc46 in loop_iterate (object=object at entry=0x5555559b3d08, timeout=timeout at entry=-1) at ../spa/plugins/support/loop.c:726
#11 0x00007ffff34c17f0 in do_loop (user_data=0x5555559b34c0) at ../src/pipewire/data-loop.c:67
#12 0x00007ffff2e66abd in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448
#13 0x00007ffff2ee47b8 in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
(gdb) 

It doesn't happen when I disable audio (--ao=null).

Thanks,
Chris.

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.17-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=en_DE.UTF-8, LC_CTYPE=en_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libspa-0.2-modules depends on:
ii  libasound2t64                   1.2.13-1+b1
ii  libc6                           2.41-4
ii  libdbus-1-3                     1.16.2-2
ii  libebur128-1                    1.2.6-1+b2
ii  libfftw3-single3                3.3.10-2+b1
ii  libgcc-s1                       14.2.0-17
ii  liblilv-0-0                     0.24.26-1
ii  libmysofa1                      1.3.3+dfsg-1
ii  libsndfile1                     1.2.2-2+b1
ii  libstdc++6                      14.2.0-17
ii  libsystemd0                     257.4-1
ii  libudev1                        257.4-1
ii  libwebrtc-audio-processing-1-3  1.3-3+b1

libspa-0.2-modules recommends no packages.

libspa-0.2-modules suggests no packages.

-- no debconf information