From 7e49c70e036e7c4fe483ab702eecd507bf215d85 Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Thu, 23 Jul 2015 19:18:19 +0200 Subject: [PATCH 30/58] hostmem: Fix qemu_opt_get_bool() crash in host_memory_backend_init() Message-id: <1437679099-27098-1-git-send-email-ehabkost@redhat.com> Patchwork-id: 67114 O-Subject: [RHEV-7.2 qemu-kvm-rhev PATCH] hostmem: Fix qemu_opt_get_bool() crash in host_memory_backend_init() Bugzilla: 1237220 RH-Acked-by: Miroslav Rezanina RH-Acked-by: Paolo Bonzini RH-Acked-by: Marcel Apfelbaum This fixes the following crash, introduced by commit 49d2e648e8087d154d8bf8b91f27c8e05e79d5a6: $ gdb --args qemu-system-x86_64 -machine pc,mem-merge=off -object memory-backend-ram,id=ram-node0,size=1024 [...] Program received signal SIGABRT, Aborted. (gdb) bt #0 0x00007ffff253b8c7 in raise () at /lib64/libc.so.6 #1 0x00007ffff253d52a in abort () at /lib64/libc.so.6 #2 0x00007ffff253446d in __assert_fail_base () at /lib64/libc.so.6 #3 0x00007ffff2534522 in () at /lib64/libc.so.6 #4 0x00005555558bb80a in qemu_opt_get_bool_helper (opts=0x55555621b650, name=name@entry=0x5555558ec922 "mem-merge", defval=defval@entry=true, del=del@entry=false) at qemu/util/qemu-option.c:388 #5 0x00005555558bbb5a in qemu_opt_get_bool (opts=, name=name@entry=0x5555558ec922 "mem-merge", defval=defval@entry=true) at qemu/util/qemu-option.c:398 #6 0x0000555555720a24 in host_memory_backend_init (obj=0x5555562ac970) at qemu/backends/hostmem.c:226 Instead of using qemu_opt_get_bool(), that didn't work with qemu_machine_opts for a long time, we can use the corresponding MachineState fields. Reviewed-by: Marcel Apfelbaum Signed-off-by: Eduardo Habkost (cherry picked from commit 6b2699672d5b56f8c2902fb9db9879e8cafb2afe) Signed-off-by: Eduardo Habkost Signed-off-by: Miroslav Rezanina --- backends/hostmem.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/backends/hostmem.c b/backends/hostmem.c index b7b6cf8..3e9c544 100644 --- a/backends/hostmem.c +++ b/backends/hostmem.c @@ -10,6 +10,7 @@ * See the COPYING file in the top-level directory. */ #include "sysemu/hostmem.h" +#include "hw/boards.h" #include "qapi/visitor.h" #include "qapi-types.h" #include "qapi-visit.h" @@ -230,11 +231,10 @@ static void host_memory_backend_set_prealloc(Object *obj, bool value, static void host_memory_backend_init(Object *obj) { HostMemoryBackend *backend = MEMORY_BACKEND(obj); + MachineState *machine = MACHINE(qdev_get_machine()); - backend->merge = qemu_opt_get_bool(qemu_get_machine_opts(), - "mem-merge", true); - backend->dump = qemu_opt_get_bool(qemu_get_machine_opts(), - "dump-guest-core", true); + backend->merge = machine_mem_merge(machine); + backend->dump = machine_dump_guest_core(machine); backend->prealloc = mem_prealloc; object_property_add_bool(obj, "merge", -- 1.8.3.1