diff options
| author | Hongren Zheng <i@zenithal.me> | 2023-10-14 15:46:04 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-16 19:58:49 +0200 |
| commit | 17d6b82d2d6d467149874b883cdba844844b996d (patch) | |
| tree | 12531643a77e285056f0032f99cd54df8db9a603 | |
| parent | d0d27ef87e1ca974ed93ed4f7d3c123cbd392ba6 (diff) | |
usb/usbip: fix wrong data added to platform device
.data of platform_device_info will be copied into .platform_data of
struct device via platform_device_add_data.
However, vhcis[i] contains a spinlock, is dynamically allocated and
used by other code, so it is not meant to be copied. The workaround
was to use void *vhci as an agent, but it was removed in the commit
suggested below.
This patch adds back the workaround and changes the way of using
platform_data accordingly.
Reported-by: syzbot+e0dbc33630a092ccf033@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/r/00000000000029242706077f3145@google.com/
Reported-by: syzbot+6867a9777f4b8dc4e256@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/r/0000000000007634c1060793197c@google.com/
Fixes: b8aaf639b403 ("usbip: Use platform_device_register_full()")
Tested-by: syzbot+6867a9777f4b8dc4e256@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/0000000000007ac87d0607979b6b@google.com/
Signed-off-by: Hongren Zheng <i@zenithal.me>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/ZSpHPCaQ5DDA9Ysl@Sun
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/usbip/vhci_hcd.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index f845b91848b9..82650c11e451 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -1139,7 +1139,7 @@ static int hcd_name_to_id(const char *name) static int vhci_setup(struct usb_hcd *hcd) { - struct vhci *vhci = dev_get_platdata(hcd->self.controller); + struct vhci *vhci = *((void **)dev_get_platdata(hcd->self.controller)); if (usb_hcd_is_primary_hcd(hcd)) { vhci->vhci_hcd_hs = hcd_to_vhci_hcd(hcd); @@ -1257,7 +1257,7 @@ static int vhci_get_frame_number(struct usb_hcd *hcd) /* FIXME: suspend/resume */ static int vhci_bus_suspend(struct usb_hcd *hcd) { - struct vhci *vhci = dev_get_platdata(hcd->self.controller); + struct vhci *vhci = *((void **)dev_get_platdata(hcd->self.controller)); unsigned long flags; dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); @@ -1271,7 +1271,7 @@ static int vhci_bus_suspend(struct usb_hcd *hcd) static int vhci_bus_resume(struct usb_hcd *hcd) { - struct vhci *vhci = dev_get_platdata(hcd->self.controller); + struct vhci *vhci = *((void **)dev_get_platdata(hcd->self.controller)); int rc = 0; unsigned long flags; @@ -1338,7 +1338,7 @@ static const struct hc_driver vhci_hc_driver = { static int vhci_hcd_probe(struct platform_device *pdev) { - struct vhci *vhci = dev_get_platdata(&pdev->dev); + struct vhci *vhci = *((void **)dev_get_platdata(&pdev->dev)); struct usb_hcd *hcd_hs; struct usb_hcd *hcd_ss; int ret; @@ -1396,7 +1396,7 @@ put_usb2_hcd: static void vhci_hcd_remove(struct platform_device *pdev) { - struct vhci *vhci = dev_get_platdata(&pdev->dev); + struct vhci *vhci = *((void **)dev_get_platdata(&pdev->dev)); /* * Disconnects the root hub, @@ -1431,7 +1431,7 @@ static int vhci_hcd_suspend(struct platform_device *pdev, pm_message_t state) if (!hcd) return 0; - vhci = dev_get_platdata(hcd->self.controller); + vhci = *((void **)dev_get_platdata(hcd->self.controller)); spin_lock_irqsave(&vhci->lock, flags); @@ -1522,10 +1522,11 @@ static int __init vhci_hcd_init(void) goto err_driver_register; for (i = 0; i < vhci_num_controllers; i++) { + void *vhci = &vhcis[i]; struct platform_device_info pdevinfo = { .name = driver_name, .id = i, - .data = &vhcis[i], + .data = &vhci, .size_data = sizeof(void *), }; |