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246bbf2f97
mirror_ubuntu-kernels/drivers/net/dsa
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Sergei Antonov 246bbf2f97 net: dsa: mv88e6060: prevent crash on an unused port 
If the port isn't a CPU port nor a user port, 'cpu_dp'
is a null pointer and a crash happened on dereferencing
it in mv88e6060_setup_port():

[    9.575872] Unable to handle kernel NULL pointer dereference at virtual address 00000014
...
[    9.942216]  mv88e6060_setup from dsa_register_switch+0x814/0xe84
[    9.948616]  dsa_register_switch from mdio_probe+0x2c/0x54
[    9.954433]  mdio_probe from really_probe.part.0+0x98/0x2a0
[    9.960375]  really_probe.part.0 from driver_probe_device+0x30/0x10c
[    9.967029]  driver_probe_device from __device_attach_driver+0xb8/0x13c
[    9.973946]  __device_attach_driver from bus_for_each_drv+0x90/0xe0
[    9.980509]  bus_for_each_drv from __device_attach+0x110/0x184
[    9.986632]  __device_attach from bus_probe_device+0x8c/0x94
[    9.992577]  bus_probe_device from deferred_probe_work_func+0x78/0xa8
[    9.999311]  deferred_probe_work_func from process_one_work+0x290/0x73c
[   10.006292]  process_one_work from worker_thread+0x30/0x4b8
[   10.012155]  worker_thread from kthread+0xd4/0x10c
[   10.017238]  kthread from ret_from_fork+0x14/0x3c

Fixes: 0abfd494de ("net: dsa: use dedicated CPU port")
CC: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
CC: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220811070939.1717146-1-saproj@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-12 17:24:44 -07:00
..
b53 net: dsa: b53: remove unnecessary spi_set_drvdata() 2022-07-06 19:49:59 -07:00
hirschmann net: dsa: hellcreek: Use the bitmap API to allocate bitmaps 2022-07-11 19:49:20 -07:00
microchip net: dsa: microchip: add support for phylink mac config 2022-07-27 09:39:17 +01:00
mv88e6xxx net: dsa: mv88e6xxx: fix speed setting for CPU/DSA ports 2022-07-27 19:58:34 -07:00
ocelot net: dsa: felix: suppress non-changes to the tagging protocol 2022-08-09 12:13:03 -07:00
qca net: dsa: qca8k: move read_switch_id function to common code 2022-07-28 22:24:40 -07:00
realtek net: dsa: realtek: rtl8365mb: handle PHY interface modes correctly 2022-06-16 20:44:47 -07:00
sja1105 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-07-21 13:03:39 -07:00
xrs700x net: dsa: pass extack to .port_bridge_join driver methods 2022-02-27 11:06:14 +00:00
bcm_sf2_cfp.c net: dsa: bcm_sf2_cfp: fix an incorrect NULL check on list iterator 2022-03-28 14:38:38 -07:00
bcm_sf2_regs.h net: dsa: bcm_sf2: refactor LED regs access 2021-12-30 17:28:32 -08:00
bcm_sf2.c net: dsa: bcm_sf2: force pause link settings 2022-06-23 20:46:39 -07:00
bcm_sf2.h net: dsa: bcm_sf2: refactor LED regs access 2021-12-30 17:28:32 -08:00
dsa_loop_bdinfo.c
dsa_loop.c net: dsa: pass extack to .port_bridge_join driver methods 2022-02-27 11:06:14 +00:00
dsa_loop.h
Kconfig net: dsa: qca8k: move driver to qca dir 2022-07-15 11:57:13 +01:00
lan9303_i2c.c net: dsa: be compatible with masters which unregister on shutdown 2021-09-19 12:08:37 +01:00
lan9303_mdio.c net: dsa: be compatible with masters which unregister on shutdown 2021-09-19 12:08:37 +01:00
lan9303-core.c net: dsa: pass extack to .port_bridge_join driver methods 2022-02-27 11:06:14 +00:00
lan9303.h net: dsa: be compatible with masters which unregister on shutdown 2021-09-19 12:08:37 +01:00
lantiq_gswip.c net: dsa: lantiq_gswip: Fix refcount leak in gswip_gphy_fw_list 2022-06-07 20:45:14 -07:00
lantiq_pce.h
Makefile net: dsa: qca8k: move driver to qca dir 2022-07-15 11:57:13 +01:00
mt7530.c net: dsa: mt7530: get cpu-port via dp->cpu_dp instead of constant 2022-06-14 22:35:16 -07:00
mt7530.h net: dsa: mt7530: get cpu-port via dp->cpu_dp instead of constant 2022-06-14 22:35:16 -07:00
mv88e6060.c net: dsa: mv88e6060: prevent crash on an unused port 2022-08-12 17:24:44 -07:00
mv88e6060.h
rzn1_a5psw.c net: dsa: rzn1-a5psw: add missing of_node_put() in a5psw_pcs_get() 2022-06-30 21:07:03 -07:00
rzn1_a5psw.h net: dsa: rzn1-a5psw: add FDB support 2022-06-27 11:37:55 +01:00
vitesse-vsc73xx-core.c net: dsa: vsc73xxx: Get rid of duplicate of_node assignment 2021-12-03 14:13:02 +00:00
vitesse-vsc73xx-platform.c net: dsa: be compatible with masters which unregister on shutdown 2021-09-19 12:08:37 +01:00
vitesse-vsc73xx-spi.c net: dsa: vitesse-vsc73xx: silent spi_device_id warnings 2022-07-19 12:20:40 +02:00
vitesse-vsc73xx.h net: dsa: vsc73xxx: Make vsc73xx_remove() return void 2021-11-15 13:15:07 +00:00