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232deb3f95
linux/net/dsa
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Vladimir Oltean 232deb3f95 net: dsa: avoid refcount warnings when ->port_{fdb,mdb}_del returns error 
At present, when either of ds->ops->port_fdb_del() or ds->ops->port_mdb_del()
return a non-zero error code, we attempt to save the day and keep the
data structure associated with that switchdev object, as the deletion
procedure did not complete.

However, the way in which we do this is suspicious to the checker in
lib/refcount.c, who thinks it is buggy to increment a refcount that
became zero, and that this is indicative of a use-after-free.

Fixes: 161ca59d39 ("net: dsa: reference count the MDB entries at the cross-chip notifier level")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-25 12:59:41 +01:00
..
dsa2.c Revert "Merge branch 'dsa-rtnl'" 2021-10-25 12:59:25 +01:00
dsa_priv.h net: dsa: flush switchdev workqueue before tearing down CPU/DSA ports 2021-09-15 15:09:46 -07:00
dsa.c net: dsa: remove the "dsa_to_port in a loop" antipattern from the core 2021-10-21 12:44:06 +01:00
Kconfig net: dsa: tag_rtl8_4: add realtek 8 byte protocol 4 tag 2021-10-18 14:02:56 +01:00
Makefile net: dsa: tag_rtl8_4: add realtek 8 byte protocol 4 tag 2021-10-18 14:02:56 +01:00
master.c dev_ioctl: split out ndo_eth_ioctl 2021-07-27 20:11:45 +01:00
port.c net: dsa: remove gratuitous use of dsa_is_{user,dsa,cpu}_port 2021-10-21 12:44:07 +01:00
slave.c Revert "Merge branch 'dsa-rtnl'" 2021-10-25 12:59:25 +01:00
switch.c net: dsa: avoid refcount warnings when ->port_{fdb,mdb}_del returns error 2021-10-25 12:59:41 +01:00
tag_8021q.c net: dsa: tag_8021q: make dsa_8021q_{rx,tx}_vid take dp as argument 2021-10-21 12:44:07 +01:00
tag_ar9331.c net: dsa: remove the struct packet_type argument from dsa_device_ops::rcv() 2021-08-02 15:13:15 +01:00
tag_brcm.c net: dsa: create a helper for locating EtherType DSA headers on RX 2021-08-11 14:44:58 +01:00
tag_dsa.c net: dsa: mv88e6xxx: isolate the ATU databases of standalone and bridged ports 2021-10-08 15:47:46 -07:00
tag_gswip.c net: dsa: remove the struct packet_type argument from dsa_device_ops::rcv() 2021-08-02 15:13:15 +01:00
tag_hellcreek.c net: dsa: remove the struct packet_type argument from dsa_device_ops::rcv() 2021-08-02 15:13:15 +01:00
tag_ksz.c net/dsa/tag_ksz.c: remove superfluous headers 2021-09-29 11:38:21 +01:00
tag_lan9303.c net: dsa: create a helper for locating EtherType DSA headers on TX 2021-08-11 14:44:58 +01:00
tag_mtk.c net: dsa: create a helper for locating EtherType DSA headers on TX 2021-08-11 14:44:58 +01:00
tag_ocelot_8021q.c net: dsa: tag_8021q: make dsa_8021q_{rx,tx}_vid take dp as argument 2021-10-21 12:44:07 +01:00
tag_ocelot.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-14 16:50:14 -07:00
tag_qca.c net: dsa: create a helper for locating EtherType DSA headers on TX 2021-08-11 14:44:58 +01:00
tag_rtl4_a.c net: dsa: tag_rtl4_a: Drop bit 9 from egress frames 2021-09-14 19:34:03 -07:00
tag_rtl8_4.c net: dsa: tag_rtl8_4: add realtek 8 byte protocol 4 tag 2021-10-18 14:02:56 +01:00
tag_sja1105.c net: dsa: tag_8021q: make dsa_8021q_{rx,tx}_vid take dp as argument 2021-10-21 12:44:07 +01:00
tag_trailer.c net: dsa: remove the struct packet_type argument from dsa_device_ops::rcv() 2021-08-02 15:13:15 +01:00
tag_xrs700x.c net: dsa: remove the struct packet_type argument from dsa_device_ops::rcv() 2021-08-02 15:13:15 +01:00