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Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between p
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev |
Date: |
Wed, 05 Nov 2014 11:59:41 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 |
On 05/11/2014 11:11, SeokYeon Hwang wrote:
> pci_qdev_init() checks whether return value is 0 or not to figure out pci
> device is initialized successfully. Otherwise, device_realize() in qdev
> checks that return value is negative value to figure out the device is
> realized successfully.
> When pci device returns positive number, pci_qdev_init() thinks that error is
> occured and makes the device unregistered. Nevertheless, qdev thinks that
> device is realized.
> Finally, crash is occured by commands like 'qtree' that traverse qdev list.
>
> So, pci_qdev_init() returns -1 when init function returns not 0.
>
> Signed-off-by: SeokYeon Hwang <address@hidden>
> ---
> hw/pci/pci.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index 371699c..c149fdf 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -1766,7 +1766,7 @@ static int pci_qdev_init(DeviceState *qdev)
> rc = pc->init(pci_dev);
> if (rc != 0) {
> do_pci_unregister_device(pci_dev);
> - return rc;
> + return -1;
> }
> }
>
>
Reviewed-by: Paolo Bonzini <address@hidden>
- [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, SeokYeon Hwang, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Michael S. Tsirkin, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Markus Armbruster, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Paolo Bonzini, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Michael S. Tsirkin, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Paolo Bonzini, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, SeokYeon Hwang, 2014/11/05
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Markus Armbruster, 2014/11/06
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Michael S. Tsirkin, 2014/11/06
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, SeokYeon Hwang, 2014/11/06
- Re: [Qemu-devel] [PATCH] pci: fixed mismatch of error-handling between pci_qdev_init() and qdev, Michael S. Tsirkin, 2014/11/06