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: Tue, 24 Feb 2026 12:03:00 +0000 [thread overview]
Message-ID: <bug-221103-208809-Ouc38mRsur@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-221103-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=221103
Mathias Nyman (mathias.nyman@linux.intel.com) changed:
What |Removed |Added
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CC| |mathias.nyman@linux.intel.c
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--- Comment #22 from Mathias Nyman (mathias.nyman@linux.intel.com) ---
As Michal stated above this is due to reading 0xffffffff from the xHC mmio
USBSTS 'status' register in xhci_resume(). This would happen if a PCI xHC
controller isn't properly powered up yet.
I'll add a hack that sleeps for a little while and then retries. Lets see if it
helps.
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next prev parent reply other threads:[~2026-02-24 12:03 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
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 [this message]
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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