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<body><span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span> changed
<a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - [CI] igt@.* - BUG kmalloc-2048 (Tainted: G U W ): Poison overwritten"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106084">bug 106084</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>RESOLVED
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<td>CLOSED
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<b><a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - [CI] igt@.* - BUG kmalloc-2048 (Tainted: G U W ): Poison overwritten"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106084#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - [CI] igt@.* - BUG kmalloc-2048 (Tainted: G U W ): Poison overwritten"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106084">bug 106084</a>
from <span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span></b>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_31/fi-ivb-3520m/igt@kms_vblank@pipe-b-ts-continuation-suspend.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_31/fi-ivb-3520m/igt@kms_vblank@pipe-b-ts-continuation-suspend.html</a>
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_33/fi-ivb-3520m/igt@kms_atomic@plane_invalid_params_fence.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_33/fi-ivb-3520m/igt@kms_atomic@plane_invalid_params_fence.html</a>
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_33/fi-ivb-3520m/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes.html(In">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_33/fi-ivb-3520m/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes.html(In</a>
reply to Chris Wilson from <a href="show_bug.cgi?id=106084#c8">comment #8</a>)
<span class="quote">> 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")</span >
Yep, it seems like it did the trick! Thanks!</pre>
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