https://github.com/torvalds/linux
When ndo_get_phys_port_name() for the CPU port was added we introduced an early check for when the DSA master network device in dsa_master_ndo_setup() already implements ndo_get_phys_port_name(). When we perform the teardown operation in dsa_master_ndo_teardown() we would not be checking that cpu_dp->orig_ndo_ops was successfully allocated and non-NULL initialized. With network device drivers such as virtio_net, this leads to a NPD as soon as the DSA switch hanging off of it gets torn down because we are now assigning the virtio_net device's netdev_ops a NULL pointer. Fixes: da7b9e9b00d4 ("net: dsa: Add ndo_get_phys_port_name() for CPU port") Reported-by: Allen Pais <allen.pais@oracle.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Allen Pais <allen.pais@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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net: dsa: Do not leave DSA master with NULL netdev_ops
File | Mode | Size |
---|---|---|
ChangeLog | -rw-r--r-- | 14.0 KB |
Kconfig | -rw-r--r-- | 957 bytes |
Makefile | -rw-r--r-- | 246 bytes |
TODO | -rw-r--r-- | 385 bytes |
befs.h | -rw-r--r-- | 3.0 KB |
befs_fs_types.h | -rw-r--r-- | 5.0 KB |
btree.c | -rw-r--r-- | 21.9 KB |
btree.h | -rw-r--r-- | 343 bytes |
datastream.c | -rw-r--r-- | 15.9 KB |
datastream.h | -rw-r--r-- | 575 bytes |
debug.c | -rw-r--r-- | 7.1 KB |
endian.h | -rw-r--r-- | 3.2 KB |
inode.c | -rw-r--r-- | 1.2 KB |
inode.h | -rw-r--r-- | 120 bytes |
io.c | -rw-r--r-- | 1.4 KB |
io.h | -rw-r--r-- | 110 bytes |
linuxvfs.c | -rw-r--r-- | 25.5 KB |
super.c | -rw-r--r-- | 3.3 KB |
super.h | -rw-r--r-- | 131 bytes |
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