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* fix use-after-free issue

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* fix i386 TLB issue
 * fix crash with wrong -M confidential-guest-support argument
 * fix NULL pointer dereference in x86 MCE injection
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* fix use-after-free issue
* fix i386 TLB issue
* fix crash with wrong -M confidential-guest-support argument
* fix NULL pointer dereference in x86 MCE injection

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# gpg: Signature made Wed 20 Mar 2024 10:31:18 GMT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  meson: remove dead dictionary access
  tests/plugins: fix use-after-free bug
  target/i386: Revert monitor_puts() in do_inject_x86_mce()
  vl: do not assert if sev-guest is used together with TCG
  vl: convert qemu_machine_creation_done() to Error **
  target/i386: fix direction of "32-bit MMU" test

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2024-03-20 15:05:51 +00:00
commit a1d86c4d70
6 changed files with 16 additions and 13 deletions
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2
contrib/plugins/howvec.c
View File

@ -167,9 +167,9 @@ static gint cmp_exec_count(gconstpointer a, gconstpointer b)
static void free_record(gpointer data)
{
InsnExecCount *rec = (InsnExecCount *) data;
qemu_plugin_scoreboard_free(rec->count.score);
g_free(rec->insn);
g_free(rec);
qemu_plugin_scoreboard_free(rec->count.score);
}
static void plugin_exit(qemu_plugin_id_t id, void *p)

2
meson.build
View File

@ -3951,7 +3951,7 @@ foreach target : target_dirs
c_args: c_args,
dependencies: arch_deps + deps + exe['dependencies'],
objects: lib.extract_all_objects(recursive: true),
link_depends: [block_syms, qemu_syms] + exe.get('link_depends', []),
link_depends: [block_syms, qemu_syms],
link_args: link_args,
win_subsystem: exe['win_subsystem'])

19
system/vl.c
View File

@ -2653,7 +2653,7 @@ static void qemu_create_cli_devices(void)
rom_reset_order_override();
}
static void qemu_machine_creation_done(void)
static bool qemu_machine_creation_done(Error **errp)
{
MachineState *machine = MACHINE(qdev_get_machine());
@ -2676,15 +2676,15 @@ static void qemu_machine_creation_done(void)
qdev_machine_creation_done();
if (machine->cgs) {
/*
* Verify that Confidential Guest Support has actually been initialized
*/
assert(machine->cgs->ready);
if (machine->cgs && !machine->cgs->ready) {
error_setg(errp, "accelerator does not support confidential guest %s",
object_get_typename(OBJECT(machine->cgs)));
exit(1);
}
if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
exit(1);
error_setg(errp, "could not start gdbserver");
return false;
}
if (!vga_interface_created && !default_vga &&
vga_interface_type != VGA_NONE) {
@ -2692,6 +2692,7 @@ static void qemu_machine_creation_done(void)
"type does not use that option; "
"No VGA device has been created");
}
return true;
}
void qmp_x_exit_preconfig(Error **errp)
@ -2703,7 +2704,9 @@ void qmp_x_exit_preconfig(Error **errp)
qemu_init_board();
qemu_create_cli_devices();
qemu_machine_creation_done();
if (!qemu_machine_creation_done(errp)) {
return;
}
if (loadvm) {
RunState state = autostart ? RUN_STATE_RUNNING : runstate_get();

2
target/i386/cpu.c
View File

@ -7735,7 +7735,7 @@ static bool x86_cpu_has_work(CPUState *cs)
static int x86_cpu_mmu_index(CPUState *cs, bool ifetch)
{
CPUX86State *env = cpu_env(cs);
int mmu_index_32 = (env->hflags & HF_CS64_MASK) ? 1 : 0;
int mmu_index_32 = (env->hflags & HF_CS64_MASK) ? 0 : 1;
int mmu_index_base =
(env->hflags & HF_CPL_MASK) == 3 ? MMU_USER64_IDX :
!(env->hflags & HF_SMAP_MASK) ? MMU_KNOSMAP64_IDX :

2
target/i386/cpu.h
View File

@ -2334,7 +2334,7 @@ static inline bool is_mmu_index_32(int mmu_index)
static inline int cpu_mmu_index_kernel(CPUX86State *env)
{
int mmu_index_32 = (env->hflags & HF_LMA_MASK) ? 1 : 0;
int mmu_index_32 = (env->hflags & HF_LMA_MASK) ? 0 : 1;
int mmu_index_base =
!(env->hflags & HF_SMAP_MASK) ? MMU_KNOSMAP64_IDX :
((env->hflags & HF_CPL_MASK) < 3 && (env->eflags & AC_MASK)) ? MMU_KNOSMAP64_IDX : MMU_KSMAP64_IDX;

2
target/i386/helper.c
View File

@ -430,7 +430,7 @@ static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data)
if (need_reset) {
emit_guest_memory_failure(MEMORY_FAILURE_ACTION_RESET, ar,
recursive);
monitor_puts(params->mon, msg);
monitor_printf(params->mon, "%s", msg);
qemu_log_mask(CPU_LOG_RESET, "%s\n", msg);
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
return;