From: bugzilla-daemon@kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 217242] CPU hard lockup related to xhci/dma
Date: Wed, 19 Apr 2023 15:41:55 +0000 [thread overview]
Message-ID: <bug-217242-208809-EvD2K6CuuU@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-217242-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=217242
--- Comment #24 from Mathias Nyman (mathias.nyman@linux.intel.com) ---
Thanks, I see whats going on now.
Some transfers that are further ahead on the ring can simply be turned to no-op
trbs by driver when cancelled. These are not added back to num_trbs_free.
This is the case when several URBs are queued for an endpoint and then
cancelled in reverse order.
I have a untested fix for this that goes on top of previous debug patch.
Can you try it out?
I'm also reworking this whole thing, but we need a small fix like this for
older stable kernels.
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next prev parent reply other threads:[~2023-04-19 15:41 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-24 15:00 [Bug 217242] New: CPU hard lockup related to xhci/dma bugzilla-daemon
2023-04-01 20:49 ` [Bug 217242] " bugzilla-daemon
2023-04-01 20:54 ` bugzilla-daemon
2023-04-01 20:57 ` bugzilla-daemon
2023-04-01 22:11 ` bugzilla-daemon
2023-04-01 22:12 ` bugzilla-daemon
2023-04-01 22:17 ` bugzilla-daemon
2023-04-02 15:54 ` Hans Petter Selasky
2023-04-02 17:25 ` Greg KH
2023-04-02 18:57 ` Alan Stern
2023-04-05 18:15 ` Hans Petter Selasky
2023-04-02 15:54 ` bugzilla-daemon
2023-04-02 17:25 ` bugzilla-daemon
2023-04-03 19:18 ` bugzilla-daemon
2023-04-06 20:15 ` bugzilla-daemon
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2023-04-10 17:32 ` bugzilla-daemon
2023-04-10 17:34 ` bugzilla-daemon
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2023-04-13 8:02 ` bugzilla-daemon
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2023-04-19 15:41 ` bugzilla-daemon [this message]
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