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authorEric W. Biederman <ebiederm@aristanetworks.com>2011-03-21 18:23:34 -0700
committerDavid S. Miller <davem@davemloft.net>2011-03-21 18:23:34 -0700
commit9d2a8fa96a44ba242de3a6f56acaef7a40a97b97 (patch)
tree1fd01e0ef3da06d1508481aeb7c3c4994122dff9 /net/bridge/br_stp.c
parentd5cd92448fded12c91f7574e49747c5f7d975a8d (diff)
downloadlinux-9d2a8fa96a44ba242de3a6f56acaef7a40a97b97.tar.gz
net ipv6: Fix duplicate /proc/sys/net/ipv6/neigh directory entries.
When I was fixing issues with unregisgtering tables under /proc/sys/net/ipv6/neigh
by adding a mount point it appears I missed a critical ordering issue, in the
ipv6 initialization.  I had not realized that ipv6_sysctl_register is called
at the very end of the ipv6 initialization and in particular after we call
neigh_sysctl_register from ndisc_init.

"neigh" needs to be initialized in ipv6_static_sysctl_register which is
the first ipv6 table to initialized, and definitely before ndisc_init.
This removes the weirdness of duplicate tables while still providing a
"neigh" mount point which prevents races in sysctl unregistering.

This was initially reported at https://bugzilla.kernel.org/show_bug.cgi?id=31232
Reported-by: sunkan@zappa.cx
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_stp.c')
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