[Bug 219532] Crash in RIP: 0010:xhci_handle_stopped_cmd_ring

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=219532

--- Comment #1 from James.Dutton@gmail.com ---
Created attachment 307280
  --> https://bugzilla.kernel.org/attachment.cgi?id=307280&action=edit
xhci-ring.c

The kernel source file where the crash happens.
xhci-ring.c:423
       /* ring command ring doorbell to restart the command ring */
        if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) &&
            !(xhci->xhc_state & XHCI_STATE_DYING)) {
                xhci->current_cmd = cur_cmd;     <- Crashes here. NULL pointer
dereference.
                xhci_mod_cmd_timer(xhci);
                xhci_ring_cmd_db(xhci);
        }

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