Looks like the long-standing "clone/fork for i386 user mode targets doesn't work" issue. See also discussion in bug 739785...
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1076445 Title: qemu-i386 fails on system(3) with a cross-toolchain from Buildroot Status in QEMU: New Bug description: qemu-i386 fails with small C program containing a system(). The C program is cross-compiled with a toolchain created by buildroot (http://buildroot.net/), gcc version 4.6.3, uClibc version 0.9.33.2 . qemu version 1.2.0 (built with http://git.buildroot.net/buildroot/tree/package/qemu/qemu.mk) host machine : Ubuntu 12.04 LTS on x86_64. $ cat sys.c #include <stdio.h> #include <stdlib.h> int main() { int ret = system("echo hello"); printf("%d\n", ret); } $ ../../host/usr/bin/i686-buildroot-linux-uclibc-gcc -o sys sys.c $ file sys sys: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), not stripped $ ../../host/usr/bin/qemu-i386 ./sys -1 same problem with x86_64 : $ ../../host/usr/bin/x86_64-buildroot-linux-uclibc-gcc -o sys sys.c $ file sys sys: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), not stripped $ ../../host/usr/bin/qemu-x86_64 sys -1 works fine with arm : $ ../../host/usr/bin/arm-buildroot-linux-uclibcgnueabi-gcc -o sys sys.c $ file sys sys: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped $ ../../host/usr/bin/qemu-arm ./sys hello 0 works fine with mips : $ ../../host/usr/bin/mips-buildroot-linux-uclibc-gcc -o sys sys.c $ file sys sys: ELF 32-bit MSB executable, MIPS, MIPS32 rel2 version 1 (SYSV), dynamically linked (uses shared libs), with unknown capability 0x41000000 = 0xf676e75, with unknown capability 0x10000 = 0x70403, not stripped $ ../../host/usr/bin/qemu-mips sys hello 0 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1076445/+subscriptions
