Wei Fang 19ce6042dd net: phy: clear phydev->devlink when the link is deleted ... There is a potential crash issue when disabling and re-enabling the network port. When disabling the network port, phy_detach() calls device_link_del() to remove the device link, but it does not clear phydev->devlink, so phydev->devlink is not a NULL pointer. Then the network port is re-enabled, but if phy_attach_direct() fails before calling device_link_add(), the code jumps to the "error" label and calls phy_detach(). Since phydev->devlink retains the old value from the previous attach/detach cycle, device_link_del() uses the old value, which accesses a NULL pointer and causes a crash. The simplified crash log is as follows. [ 24.702421] Call trace: [ 24.704856] device_link_put_kref+0x20/0x120 [ 24.709124] device_link_del+0x30/0x48 [ 24.712864] phy_detach+0x24/0x168 [ 24.716261] phy_attach_direct+0x168/0x3a4 [ 24.720352] phylink_fwnode_phy_connect+0xc8/0x14c [ 24.725140] phylink_of_phy_connect+0x1c/0x34 Therefore, phydev->devlink needs to be cleared when the device link is deleted. Fixes: bc66fa87d4 ("net: phy: Add link between phy dev and mac dev") Signed-off-by: Wei Fang <wei.fang@nxp.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://patch.msgid.link/20250523083759.3741168-1-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Jason Liu <jason.hui.liu@nxp.com>		2025-05-29 15:21:22 +08:00
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appletalk	net: appletalk: remove Apple/Farallon LocalTalk PC support	2022-05-11 13:08:38 +01:00
arcnet	arcnet: restoring support for multiple Sohard Arcnet cards	2023-12-13 18:45:05 +01:00
bonding	bonding: change ipsec_lock from spin lock to mutex	2024-09-04 13:28:27 +02:00
caif	tty: use u8 for flags	2023-08-11 21:12:45 +02:00
can	This is the 6.6.51 stable release	2024-09-24 11:49:41 +08:00
dsa	This is the 6.6.52 stable release	2024-09-24 11:50:01 +08:00
ethernet	LF-14922 net: enetc: Fix null pointer accces in fsl-netc-prb-ierb driver probe	2025-03-26 17:14:17 +02:00
fddi
fjes	fjes: fix memleaks in fjes_hw_setup	2024-01-31 16:19:05 -08:00
hamradio	tty: use u8 for flags	2023-08-11 21:12:45 +02:00
hippi	net: hippi: Add missing pci_disable_device() in rr_init_one()	2022-09-26 13:22:39 -07:00
hyperv	hv_netvsc: Don't free decrypted memory	2024-05-17 12:02:17 +02:00
ieee802154
ipa	net: ipa: don't overrun IPA suspend interrupt registers	2024-03-01 13:35:08 +01:00
ipvlan	ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound	2024-06-12 11:12:59 +02:00
mctp	net: mctp-serial: Fix missing escapes on transmit	2024-09-12 11:11:28 +02:00
mdio	net: explicitly check in of_phy_is_fixed_link() for managed = "in-band-status"	2023-10-30 17:16:56 +08:00
netdevsim	netdevsim: avoid potential loop in nsim_dev_trap_report_work()	2024-02-16 19:10:47 +01:00
pcs	LF-12325 pcs: xpcs: remove the unnecessary delays	2024-10-15 17:02:05 +08:00
phy	net: phy: clear phydev->devlink when the link is deleted	2025-05-29 15:21:22 +08:00
plip	net: plip: don't call kfree_skb/dev_kfree_skb() under spin_lock_irq()	2022-12-07 20:10:47 -08:00
ppp	pppoe: Fix memory leak in pppoe_sendmsg()	2024-08-19 06:04:27 +02:00
pse-pd	net: pse-pd: PSE_REGULATOR should depend on REGULATOR	2022-10-05 20:32:28 -07:00
slip	tty: use u8 for flags	2023-08-11 21:12:45 +02:00
team	team: Fix use-after-free when an option instance allocation fails	2023-12-20 17:02:02 +01:00
thunderbolt
usb	usbnet: ipheth: fix carrier detection in modes 1 and 4	2024-09-18 19:24:05 +02:00
vmxnet3	vmxnet3: disable rx data ring on dma allocation failure	2024-06-21 14:38:15 +02:00
vxlan	vxlan: Fix regression when dropping packets due to invalid src addresses	2024-06-21 14:38:17 +02:00
wan
wireguard	wireguard: send: annotate intentional data race in checking empty queue	2024-07-18 13:21:23 +02:00
wireless	wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change	2024-09-18 19:24:05 +02:00
wwan	net: wwan: iosm: Fix tainted pointer delete is case of region creation fail	2024-06-21 14:38:18 +02:00
xen-netback	kthread: add kthread_stop_put	2024-06-12 11:12:52 +02:00
amt.c	amt: do not use overwrapped cb area	2024-01-25 15:35:56 -08:00
bareudp.c	bareudp: Fix device stats updates.	2024-09-12 11:11:34 +02:00
dummy.c	net: add netdev_lockdep_set_classes() to virtual drivers	2024-04-13 13:07:30 +02:00
eql.c	net: rename reference+tracking helpers	2022-06-09 21:52:55 -07:00
geneve.c	geneve: Fix incorrect inner network header offset when innerprotoinherit is set	2024-06-21 14:38:33 +02:00
gtp.c	gtp: fix a potential NULL pointer dereference	2024-09-04 13:28:27 +02:00
ifb.c	net: Remove the obsolte u64_stats_fetch_*_irq() users (drivers).	2022-10-28 20:13:54 -07:00
imx-shmem-net.c	SCF-7618 net: imx-shmem-net: Fix build break due to kernel upgrade	2023-10-30 15:52:10 +08:00
ivshmem-net.c	LF-7429 net: ivshmem-net: handle softirq after napi_schedule	2023-10-30 15:52:11 +08:00
Kconfig	MLK-25346: net: add imx-shmem-net driver	2023-10-30 15:52:10 +08:00
LICENSE.SRC	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
loopback.c	net: add netdev_lockdep_set_classes() to virtual drivers	2024-04-13 13:07:30 +02:00
macsec.c	macsec: Detect if Rx skb is macsec-related for offloading devices that update md_dst	2024-05-02 16:32:50 +02:00
macvlan.c	macvlan: Don't propagate promisc change to lower dev in passthru	2023-11-28 17:19:54 +00:00
macvtap.c
Makefile	This is the 6.6.34 stable release	2024-06-18 17:16:08 +08:00
mdio.c	net: mdio: Correct function name mdio45_links_ok() in comment	2021-03-29 13:42:44 -07:00
mhi_net.c	net: mhi: Remove redundant initialization owner in mhi_net_driver	2023-08-10 17:29:42 -07:00
mii.c	net: mii: add C73 link mode and base page helpers	2023-10-30 17:16:55 +08:00
net_failover.c	net/net_failover: fix txq exceeding warning	2023-03-27 08:08:57 +01:00
netconsole.c	net: netconsole: Disable target before netpoll cleanup	2024-08-03 08:54:13 +02:00
nlmon.c	net: don't include ethtool.h from netdevice.h	2020-11-23 17:27:04 -08:00
ntb_netdev.c	net: ntb_netdev: Move ntb_netdev_rx_handler() to call netif_rx() from __netif_rx()	2024-07-11 12:49:13 +02:00
rionet.c	driver core: class: remove struct class_interface * from callbacks	2023-04-03 21:42:52 +02:00
sb1000.c	net: dev: Makes sure netif_rx() can be invoked in any context.	2022-02-14 13:38:35 +00:00
Space.c	net: move from strlcpy with unused retval to strscpy	2022-08-31 14:11:07 -07:00
sungem_phy.c
tap.c	tap: add missing verification for short frame	2024-07-27 11:34:11 +02:00
tun.c	tun: add missing verification for short frame	2024-07-27 11:34:10 +02:00
veth.c	net: add netdev_lockdep_set_classes() to virtual drivers	2024-04-13 13:07:30 +02:00
virtio_net.c	virtio_net: Fix napi_skb_cache_put warning	2024-09-08 07:54:49 +02:00
vrf.c	net: Move {l,t,d}stats allocation to core and convert veth & vrf	2023-12-03 07:33:04 +01:00
vsockmon.c	net: don't include ethtool.h from netdevice.h	2020-11-23 17:27:04 -08:00
xen-netfront.c	xen-netfront: Add missing skb_mark_for_recycle	2024-04-10 16:35:49 +02:00