device: 0.769
user-level: 0.720
semantic: 0.692
socket: 0.564
arm: 0.549
assembly: 0.548
graphic: 0.532
mistranslation: 0.528
debug: 0.499
ppc: 0.488
vnc: 0.455
boot: 0.450
register: 0.426
network: 0.424
i386: 0.411
PID: 0.399
risc-v: 0.370
kernel: 0.363
architecture: 0.354
x86: 0.315
files: 0.304
TCG: 0.302
virtual: 0.293
VMM: 0.220
performance: 0.152
KVM: 0.132
permissions: 0.117
peripherals: 0.095
hypervisor: 0.092

QEMU in user-mode emulation mode crashes when the user program jumps to an invalid address

Running this code:

void (*func)() = 0x12345678;

int main()
{
    func();
    return 0;
}

Produces the following output:

qemu-arm-static: /build/qemu-DqynNa/qemu-2.8+dfsg/translate-all.c:175: tb_lock: Assertion `!have_tb_lock' failed.
qemu-arm-static: /build/qemu-DqynNa/qemu-2.8+dfsg/translate-all.c:175: tb_lock: Assertion `!have_tb_lock' failed.
Segmentation fault

The expected result is as follows:

qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault



I'm not sure exactly when we fixed this (the fix is probably in the 4.1 release) but as of current head-of-git this correctly generates the SIGSEGV.