Fedor PchelkinandGreg Kroah-Hartman 3b89b4c095 wifi: rtw88: check for PCI upstream bridge existence ...

commit eb101d2abd upstream.

pci_upstream_bridge() returns NULL if the device is on a root bus.  If
8821CE is installed in the system with such a PCI topology, the probing
routine will crash.  This has probably been unnoticed as 8821CE is mostly
supplied in laptops where there is a PCI-to-PCI bridge located upstream
from the device.  However the card might be installed on a system with
different configuration.

Check if the bridge does exist for the specific workaround to be applied.

Found by Linux Verification Center (linuxtesting.org) with Svace static
analysis tool.

Fixes: 24f5e38a13 ("rtw88: Disable PCIe ASPM while doing NAPI poll on 8821CE")
Cc: stable@vger.kernel.org
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260220094730.49791-1-pchelkin@ispras.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-06-01 17:38:45 +02:00

..

appletalk

…

arcnet

net: arcnet: com20020-pci: fix support for 2.5Mbit cards

2026-03-25 11:02:57 +01:00

bonding

bonding: check xdp prog when set bond mode

2026-06-01 17:38:38 +02:00

caif

serial: caif: hold tty->link reference in ldisc_open and ser_release

2026-03-25 11:03:04 +01:00

can

can: mcp251x: add error handling for power enable in open and resume

2026-06-01 17:38:31 +02:00

dsa

net: dsa: bcm_sf2: fix missing clk_disable_unprepare() in error paths

2026-03-25 11:03:22 +01:00

ethernet

net: enetc: fix the deadlock of enetc_mdio_lock

2026-06-01 17:38:44 +02:00

fddi

…

fjes

…

hamradio

…

hippi

…

hyperv

…

ieee802154

…

ipa

…

ipvlan

…

mctp

mctp: i2c: fix skb memory leak in receive path

2026-03-25 11:03:04 +01:00

mdio

…

netdevsim

…

pcs

…

phy

device property: Make modifications of fwnode "flags" thread safe

2026-06-01 17:38:45 +02:00

plip

…

ppp

…

pse-pd

…

slip

…

team

…

usb

net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()

2026-06-01 17:38:35 +02:00

vmxnet3

…

vxlan

vxlan: validate ND option lengths in vxlan_na_create

2026-04-11 14:16:31 +02:00

wan

net: lapbether: handle NETDEV_PRE_TYPE_CHANGE

2026-06-01 17:38:34 +02:00

wireguard

…

wireless

wifi: rtw88: check for PCI upstream bridge existence

2026-06-01 17:38:45 +02:00

wwan

rtnetlink: pass netlink message header and portid to rtnl_configure_link()

2026-04-11 14:16:06 +02:00

xen-netback

xen-netback: reject zero-queue configuration from guest

2026-03-04 07:20:04 -05:00

amt.c

…

bareudp.c

…

dummy.c

…

eql.c

…

geneve.c

rtnetlink: pass netlink message header and portid to rtnl_configure_link()

2026-04-11 14:16:06 +02:00

gtp.c

…

ifb.c

…

Kconfig

…

LICENSE.SRC

…

loopback.c

…

macsec.c

…

macvlan.c

macvlan: observe an RCU grace period in macvlan_common_newlink() error path

2026-03-04 07:20:07 -05:00

macvtap.c

…

Makefile

…

mdio.c

…

mhi_net.c

…

mii.c

…

net_failover.c

…

netconsole.c

…

nlmon.c

…

ntb_netdev.c

…

rionet.c

…

sb1000.c

…

Space.c

…

sungem_phy.c

…

tap.c

…

thunderbolt.c

…

tun.c

…

veth.c

rtnetlink: pass netlink message header and portid to rtnl_configure_link()

2026-04-11 14:16:06 +02:00

virtio_net.c

virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false

2026-04-11 14:16:14 +02:00

vrf.c

…

vsockmon.c

…

xen-netfront.c

…