Hello, I believe I experienced the same bug in a similar context: using QEMU Linux user emulation for continuous integration on GitHub Actions. As a workaround, I did run the chroot script with taskset -c 0 to limit execution on a single CPU which has been solving the problem for more than 10 successive runs. @guysoft does taskset fixes your problem?
This was with qemu 4.2 as packaged by Ubuntu. The environment (automated CI) makes it difficult to plug gdb. In my case, the crash happens with PostgreSQL. https://www.postgresql.org/message-id/86C24765-95F7-464F-9677-B09A396A5F69%40kallisys.net It may be related to the way QEMU acquires a global lock to ensure memory barrier semantic on ARM or to the way QEMU interprets RaspberryPi Zero (armv6l) memory barrier cp15 instruction which is different from newer cores. I have yet to find where this is implemented in qemu source code to investigate. @pmaydell could you please provide any pointer? -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1776478 Title: Getting qemu: uncaught target signal 6 when running lv2 plugin cross- compilation Status in QEMU: Incomplete Bug description: Hey, I am part of the Zynthian team and we use qemu-arm-static to cross compile lv2 audio plugins. When running a compilation of DISTRHO-Ports we get: lv2_ttl_generator: pthread_mutex_lock.c:81: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed. qemu: uncaught target signal 6 (Aborted) - core dumped ./scripts/generate-ttl.sh: line 27: 16524 Aborted $GEN ./$FILE Makefile:62: recipe for target 'gen_lv2' failed make[1]: *** [gen_lv2] Error 134 make[1]: Leaving directory '/home/pi/zynthian-sw/plugins/DISTRHO-Ports' Makefile:104: recipe for target 'lv2' failed make: *** [lv2] Error 2 lv2_ttl_generator source is here: https://github.com/DISTRHO/DISTRHO-Ports/tree/master/libs/lv2-ttl-generator The command that is ruining is lv2_ttl_generator ./TAL-Filter-2.so And ./TAL-Filter-2.so source is here: https://github.com/DISTRHO/DISTRHO-Ports/tree/master/ports/tal-filter-2/source Is there a way to debug what is going on? This runs fine on a Raspberrypi which is armv7 A workaround would also help. Bug in Zynthian: https://github.com/zynthian/zynthian-sys/issues/59 Bug in DISTRHO-Ports: https://github.com/DISTRHO/DISTRHO-Ports/issues/29 Using qemu-arm-static version from master from two days ago: qemu-arm version 2.12.50 (v2.12.0-1182-ga7a7309ca5-dirty), commit: a7a7309ca52c327c6603d60db90ae4feeae719f7 Also saw this in qemu-arm version 2.12.0 (Debian 1:2.12+dfsg-3) Thanks, Guy To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1776478/+subscriptions