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vl: catch [accel] entry without accelerator 

Avoid a SIGSEGV and return an error instead.

Reported-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1439
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2023-01-13 11:35:40 +01:00
parent 5080152e2e
commit 78901b5047
1 changed files with 11 additions and 4 deletions
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15
softmmu/vl.c
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@ -2204,14 +2204,18 @@ static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
int ret;
bool qtest_with_kvm;
if (!acc) {
error_setg(errp, QERR_MISSING_PARAMETER, "accel");
goto bad;
}
qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
if (!ac) {
*p_init_failed = true;
if (!qtest_with_kvm) {
error_report("invalid accelerator %s", acc);
}
return 0;
goto bad;
}
accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
object_apply_compat_props(OBJECT(accel));
@ -2221,14 +2225,17 @@ static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
ret = accel_init_machine(accel, current_machine);
if (ret < 0) {
*p_init_failed = true;
if (!qtest_with_kvm || ret != -ENOENT) {
error_report("failed to initialize %s: %s", acc, strerror(-ret));
}
return 0;
goto bad;
}
return 1;
bad:
*p_init_failed = true;
return 0;
}
static void configure_accelerators(const char *progname)