OK, this can't be as simple as "posix_spawn() fails", because I've just tried the test program from the posix_spawn manpage (http://man7.org/linux/man-pages/man3/posix_spawn.3.html) and that works fine for x86-64 guest, aarch64 guest and armhf guest. In the x86 and armhf cases the libc I have seems to use the NR_vfork syscall, but for aarch64 it uses clone(CLONE_VM | CLONE_VFORK | SIGCHLD, ...) which is what the glibc sources linked in comment #5 do, and that all works fine.
And locale-gen runs fine for my xenial-armhf chroot using current head- of-git QEMU: root@e104462:/# locale-gen Generating locales (this might take a while)... en_GB.UTF-8... done Generation complete. So can I ask that people: (1) please try with current head of git (or with 2.11-rc1, which is almost the same thing); (2) if there's still a problem with localegen or with programs calling posix_spawn() or other real-world code, please provide full repro instructions so I can try to reproduce locally. I don't think we can make clone() in general work, so oddball demo code like the example program in the clone(2) manpage is out of scope, but there may well be specific cases we can address. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1673976 Title: linux-user clone() can't handle glibc posix_spawn() (causes locale-gen to assert) Status in QEMU: New Bug description: I'm running a command (locale-gen) inside of an armv7h chroot mounted on my x86_64 desktop by putting qemu-arm-static into /usr/bin/ of the chroot file system and I get a core dump. locale-gen Generating locales... en_US.UTF-8...localedef: ../sysdeps/unix/sysv/linux/spawni.c:360: __spawnix: Assertion `ec >= 0' failed. qemu: uncaught target signal 6 (Aborted) - core dumped /usr/bin/locale-gen: line 41: 34 Aborted (core dumped) localedef -i $input -c -f $charset -A /usr/share/locale/locale.alias $locale I've done this same thing successfully for years, but this breakage has appeared some time in the last 3 or so months. Possibly with the update to qemu version 2.8. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1673976/+subscriptions
