Mathias Nyman ae4ff9dead xhci: Fix NULL pointer dereference when reading portli debugfs files ... Michal reported and debgged a NULL pointer dereference bug in the recently added portli debugfs files Oops is caused when there are more port registers counted in xhci->max_ports than ports reported by Supported Protocol capabilities. This is possible if max_ports is more than maximum port number, or if there are gaps between ports of different speeds the 'Supported Protocol' capabilities. In such cases port->rhub will be NULL so we can't reach xhci behind it. Add an explicit NULL check for this case, and print portli in hex without dereferencing port->rhub. Reported-by: Michal Pecio <michal.pecio@gmail.com> Closes: https://lore.kernel.org/linux-usb/20260304103856.48b785fd.michal.pecio@gmail.com Fixes: 384c57ec72 ("usb: xhci: Add debugfs support for xHCI Port Link Info (PORTLI) register.") Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://patch.msgid.link/20260304223639.3882398-4-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2026-03-11 16:18:48 +01:00
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Kconfig	USB: host: drop unneeded dependency on OF_GPIO	2026-01-07 16:14:11 +01:00
Makefile	usb: isp1362-hcd: remove Philips ISP1362 USB OTG controller driver	2026-01-07 16:13:19 +01:00
bcma-hcd.c	…
ehci-atmel.c	…
ehci-brcm.c	…
ehci-dbg.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
ehci-exynos.c	…
ehci-fsl.c	…
ehci-fsl.h	…
ehci-grlib.c	…
ehci-hcd.c	USB: HCD: remove logic about which hcd is loaded	2026-01-14 15:59:00 +01:00
ehci-hub.c	…
ehci-mem.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
ehci-mv.c	…
ehci-npcm7xx.c	…
ehci-omap.c	…
ehci-orion.c	…
ehci-pci.c	PCI: Add ASPEED vendor ID to pci_ids.h	2026-01-09 14:21:16 -06:00
ehci-platform.c	usb: host: ehci-platform: Call reset assert/deassert on suspend/resume	2025-11-21 15:11:22 +01:00
ehci-ppc-of.c	…
ehci-ps3.c	…
ehci-q.c	…
ehci-sched.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
ehci-sh.c	…
ehci-spear.c	…
ehci-st.c	…
ehci-sysfs.c	…
ehci-timer.c	…
ehci-xilinx-of.c	…
ehci.h	…
fhci-dbg.c	…
fhci-hcd.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
fhci-hub.c	…
fhci-mem.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
fhci-q.c	…
fhci-sched.c	…
fhci-tds.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
fhci.h	…
fsl-mph-dr-of.c	…
isp116x-hcd.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
isp116x.h	…
max3421-hcd.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
octeon-hcd.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
octeon-hcd.h	…
ohci-at91.c	…
ohci-da8xx.c	usb: ohci-da8xx: remove unused platform data	2025-11-21 15:13:56 +01:00
ohci-dbg.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
ohci-exynos.c	…
ohci-hcd.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
ohci-hub.c	…
ohci-mem.c	…
ohci-nxp.c	usb: ohci-nxp: clean up probe error labels	2025-12-23 15:48:46 +01:00
ohci-omap.c	…
ohci-pci.c	…
ohci-platform.c	USB: OHCI/UHCI: Add soft dependencies on ehci_platform	2026-01-14 16:02:14 +01:00
ohci-ppc-of.c	…
ohci-ps3.c	…
ohci-pxa27x.c	…
ohci-q.c	…
ohci-s3c2410.c	…
ohci-sa1111.c	…
ohci-sm501.c	…
ohci-spear.c	…
ohci-st.c	…
ohci.h	…
oxu210hp-hcd.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
pci-quirks.c	…
pci-quirks.h	…
r8a66597-hcd.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
r8a66597.h	…
sl811-hcd.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
sl811.h	…
sl811_cs.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
ssb-hcd.c	…
uhci-debug.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
uhci-grlib.c	…
uhci-hcd.c	Convert more 'alloc_obj' cases to default GFP_KERNEL arguments	2026-02-21 20:03:00 -08:00
uhci-hcd.h	…
uhci-hub.c	…
uhci-pci.c	…
uhci-platform.c	USB: OHCI/UHCI: Add soft dependencies on ehci_platform	2026-01-14 16:02:14 +01:00
uhci-q.c	…
xen-hcd.c	…
xhci-caps.h	usb: xhci: Add debugfs support for xHCI Port Link Info (PORTLI) register.	2025-11-21 14:53:01 +01:00
xhci-dbg.c	…
xhci-dbgcap.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
xhci-dbgcap.h	xhci: dbc: prepare to expose strings through sysfs	2026-01-23 17:16:24 +01:00
xhci-dbgtty.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
xhci-debugfs.c	xhci: Fix NULL pointer dereference when reading portli debugfs files	2026-03-11 16:18:48 +01:00
xhci-debugfs.h	…
xhci-ext-caps.c	…
xhci-ext-caps.h	…
xhci-histb.c	…
xhci-hub.c	usb: xhci: standardize single bit-field macros	2025-11-21 14:53:01 +01:00
xhci-mem.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
xhci-mtk-sch.c	Convert more 'alloc_obj' cases to default GFP_KERNEL arguments	2026-02-21 20:03:00 -08:00
xhci-mtk.c	usb: Remove redundant pm_runtime_mark_last_busy() calls	2025-11-21 15:11:53 +01:00
xhci-mtk.h	usb: xhci-mtk: correct most kernel-doc problems in xhci-mtk.h	2025-11-21 14:52:37 +01:00
xhci-mvebu.c	…
xhci-mvebu.h	…
xhci-pci-renesas.c	…
xhci-pci.c	usb: xhci: simplify handling of Structural Parameters 1 values	2025-11-21 14:53:00 +01:00
xhci-pci.h	…
xhci-plat.c	…
xhci-plat.h	…
xhci-port.h	usb: xhci: Add debugfs support for xHCI Port Link Info (PORTLI) register.	2025-11-21 14:53:01 +01:00
xhci-rcar-regs.h	…
xhci-rcar.c	…
xhci-ring.c	usb: xhci: Prevent interrupt storm on host controller error (HCE)	2026-03-11 16:18:48 +01:00
xhci-rzg3e-regs.h	…
xhci-rzv2m.c	…
xhci-rzv2m.h	…
xhci-sideband.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
xhci-tegra.c	usb: host: tegra: Remove manual wake IRQ disposal	2026-01-23 17:15:54 +01:00
xhci-trace.c	…
xhci-trace.h	usb: xhci: standardize single bit-field macros	2025-11-21 14:53:01 +01:00
xhci.c	usb: xhci: Fix memory leak in xhci_disable_slot()	2026-03-11 16:18:48 +01:00
xhci.h	usb: xhci: limit number of interrupts to 128	2025-11-21 14:53:00 +01:00