<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [BAT] igt@drv_module_reload@basic-reload - dmesg-warn - BUG: unable to handle kernel paging request at ffffffffa00b4440 -" href="https://bugs.freedesktop.org/show_bug.cgi?id=105501#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [BAT] igt@drv_module_reload@basic-reload - dmesg-warn - BUG: unable to handle kernel paging request at ffffffffa00b4440 -" href="https://bugs.freedesktop.org/show_bug.cgi?id=105501">bug 105501</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>Because of the dev link, I wonder if commit 44a182b9d17765514fa2b1cc911e4e65134eef93 Author: Mathias Nyman <<a href="mailto:mathias.nyman@linux.intel.com">mathias.nyman@linux.intel.com</a>> Date: Thu May 3 17:30:07 2018 +0300 xhci: Fix use-after-free in xhci_free_virt_device KASAN found a use-after-free in xhci_free_virt_device+0x33b/0x38e where xhci_free_virt_device() sets slot id to 0 if udev exists: if (dev->udev && dev->udev->slot_id) dev->udev->slot_id = 0; dev->udev will be true even if udev is freed because dev->udev is not set to NULL. set dev->udev pointer to NULL in xhci_free_dev() The original patch went to stable so this fix needs to be applied there as well. Fixes: a400efe455f7 ("xhci: zero usb device slot_id member when disabling and freeing a xhci slot")</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>