[Bug 219532] Crash in RIP: 0010:xhci_handle_stopped_cmd_ring

[bugzilla-daemon@kernel.org]

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

Michał Pecio (michal.pecio@gmail.com) changed:

           What    |Removed                     |Added
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                 CC|                            |michal.pecio@gmail.com

--- Comment #5 from Michał Pecio (michal.pecio@gmail.com) ---
It looks like some device doesn't respond to address assignment after
connection. If you weren't connecting anything at the time, it's possible that
a device is buggy and had disconnected by itself a moment earlier, but the log
is too short to tell.

Not sure why it crashed. It looks like there were two attempts 6 seconds apart
and no crash on the first attempt.

It's unlikely that xhci was NULL near the end of the function. If it were,
there were several opportunities to crash earlier. The call to
xhci_mod_cmd_timer() in the next line dereferences xhci->cur_cmd, which is
perhaps more suspicious.

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