Hi,

Thank you for your patch.

On 9/17/24 2:04 PM, Aleksandr Burakov wrote:

No upstream commit exists for this commit.

Right, which is bad, especially since the upstream code actually still has this bug.

NACK.

Note that upstream in drivers/platform/x86/x86-android-tablets/core.c the same issue is also present around line 447:

pdevs[pdev_count] = platform_device_register_data(&pdev->dev, "gpio-keys", PLATFORM_DEVID_AUTO, &pdata, sizeof(pdata)); if (IS_ERR(pdevs[pdev_count])) { x86_android_tablet_remove(pdev); return PTR_ERR(pdevs[pdev_count]); } pdev_count++;

Please submit a fix for both issues upstream, once that has been merged you can submit a backport with a proper upstream commit reference.

Regards,

Hans

Pointer '&pdevs[i]' is dereferenced at x86_android_tablet_init() after the referenced memory was deallocated by calling function 'x86_android_tablet_cleanup()'.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 5eba0141206e ("platform/x86: x86-android-tablets: Add support for instantiating platform-devs") Signed-off-by: Aleksandr Burakov a.burakov@rosalinux.ru

---

drivers/platform/x86/x86-android-tablets.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c index 9178076d9d7d..9838c5332201 100644 --- a/drivers/platform/x86/x86-android-tablets.c +++ b/drivers/platform/x86/x86-android-tablets.c @@ -1853,8 +1853,9 @@ static __init int x86_android_tablet_init(void) for (i = 0; i < pdev_count; i++) { pdevs[i] = platform_device_register_full(&dev_info->pdev_info[i]); if (IS_ERR(pdevs[i])) {

• 	int ret = PTR_ERR(pdevs[i]);
  x86_android_tablet_cleanup();
  

• 	return PTR_ERR(pdevs[i]);
  

• 	return ret;
  

  } }