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From: | Philippe Mathieu-Daudé |
Subject: | Re: [PATCH v2] hw/char/exynos4210_uart: Fix memleaks in exynos4210_uart_init |
Date: | Thu, 13 Feb 2020 11:09:31 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 |
On 2/13/20 3:56 AM, address@hidden wrote:
From: Chen Qun <address@hidden> It's easy to reproduce as follow: virsh qemu-monitor-command vm1 --pretty '{"execute": "device-list-properties", "arguments":{"typename":"exynos4210.uart"}}' ASAN shows memory leak stack: #1 0xfffd896d71cb in g_malloc0 (/lib64/libglib-2.0.so.0+0x571cb) #2 0xaaad270beee3 in timer_new_full /qemu/include/qemu/timer.h:530 #3 0xaaad270beee3 in timer_new /qemu/include/qemu/timer.h:551 #4 0xaaad270beee3 in timer_new_ns /qemu/include/qemu/timer.h:569 #5 0xaaad270beee3 in exynos4210_uart_init /qemu/hw/char/exynos4210_uart.c:677 #6 0xaaad275c8f4f in object_initialize_with_type /qemu/qom/object.c:516 #7 0xaaad275c91bb in object_new_with_type /qemu/qom/object.c:684 #8 0xaaad2755df2f in qmp_device_list_properties /qemu/qom/qom-qmp-cmds.c:152 Reported-by: Euler Robot <address@hidden> Signed-off-by: Chen Qun <address@hidden> --- Changes V2 to V1: -Keep s->wordtime in exynos4210_uart_init (Base on Eduardo and Philippe's comments).
Thanks. Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
--- hw/char/exynos4210_uart.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/hw/char/exynos4210_uart.c b/hw/char/exynos4210_uart.c index 25d6588e41..96d5180e3e 100644 --- a/hw/char/exynos4210_uart.c +++ b/hw/char/exynos4210_uart.c @@ -674,8 +674,6 @@ static void exynos4210_uart_init(Object *obj) SysBusDevice *dev = SYS_BUS_DEVICE(obj); Exynos4210UartState *s = EXYNOS4210_UART(dev);- s->fifo_timeout_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,- exynos4210_uart_timeout_int, s); s->wordtime = NANOSECONDS_PER_SECOND * 10 / 9600;/* memory mapping */@@ -691,6 +689,9 @@ static void exynos4210_uart_realize(DeviceState *dev, Error **errp) { Exynos4210UartState *s = EXYNOS4210_UART(dev);+ s->fifo_timeout_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,+ exynos4210_uart_timeout_int, s); + qemu_chr_fe_set_handlers(&s->chr, exynos4210_uart_can_receive, exynos4210_uart_receive, exynos4210_uart_event, NULL, s, NULL, true);
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