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From: bugzilla-daemon@kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 221103] xhci_hcd: System lockup under CPU load during usbfs polling of USB devices on AMD platforms
Date: Fri, 20 Feb 2026 09:40:05 +0000	[thread overview]
Message-ID: <bug-221103-208809-rtbdyQhXhR@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-221103-208809@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=221103

--- Comment #8 from Michał Pecio (michal.pecio@gmail.com) ---
Or perhaps simply this would crash it?

while sleep .1 ; do true </dev/bus/usb/010/001 ; done

Chances are that sleep isn't necessary. This seems equivalent to what you are
doing and it triggers some code in xhci_hub.c, but no crash so far on my AM4
system.

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  parent reply	other threads:[~2026-02-20  9:40 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-18 14:52 [Bug 221103] New: xhci_hcd: System lockup under CPU load during rapid usbfs polling of SuperSpeed root hubs on AMD Ryzen platforms bugzilla-daemon
2026-02-20  7:30 ` [Bug 221103] xhci_hcd: System lockup under CPU load during usbfs polling of USB devices on AMD platforms bugzilla-daemon
2026-02-20  8:31 ` bugzilla-daemon
2026-02-20  9:17   ` Greg KH
2026-02-20  9:16 ` bugzilla-daemon
2026-02-20  9:17 ` bugzilla-daemon
2026-02-20  9:24 ` bugzilla-daemon
2026-02-20  9:26 ` bugzilla-daemon
2026-02-20  9:28 ` bugzilla-daemon
2026-02-20  9:40 ` bugzilla-daemon [this message]
2026-02-20 10:07 ` bugzilla-daemon
2026-02-20 10:17   ` Greg KH
2026-02-20 10:17 ` bugzilla-daemon
2026-02-20 10:21 ` bugzilla-daemon
2026-02-20 11:19 ` bugzilla-daemon
2026-02-20 14:07 ` bugzilla-daemon
2026-02-20 17:18 ` bugzilla-daemon
2026-02-21  1:12 ` bugzilla-daemon
2026-02-23 13:05 ` bugzilla-daemon
2026-02-23 17:52 ` bugzilla-daemon
2026-02-23 22:33 ` bugzilla-daemon
2026-02-24  7:45 ` bugzilla-daemon
2026-02-24  8:52 ` bugzilla-daemon
2026-02-24 10:19 ` bugzilla-daemon
2026-02-24 12:03 ` bugzilla-daemon
2026-02-24 12:21 ` bugzilla-daemon
2026-02-24 15:42 ` bugzilla-daemon
2026-03-08 17:56 ` bugzilla-daemon

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