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authorJiri Bohac <jbohac@suse.cz>2016-10-20 12:29:26 +0200
committerDavid S. Miller <davem@davemloft.net>2016-10-20 14:29:11 -0400
commit7aa8e63f0d0f2e0ae353632bca1ce75a258696c6 (patch)
tree296d579460ec8de98617fd4c63945f4cf4db2aae /net/ipv6/ip6_offload.c
parent8be0328e52dc2c8c6f61563c9ccc95ae4d63e9ce (diff)
ipv6: properly prevent temp_prefered_lft sysctl race
The check for an underflow of tmp_prefered_lft is always false because tmp_prefered_lft is unsigned. The intention of the check was to guard against racing with an update of the temp_prefered_lft sysctl, potentially resulting in an underflow. As suggested by David Miller, the best way to prevent the race is by reading the sysctl variable using READ_ONCE. Signed-off-by: Jiri Bohac <jbohac@suse.cz> Reported-by: Julia Lawall <julia.lawall@lip6.fr> Fixes: 76506a986dc3 ("IPv6: fix DESYNC_FACTOR") Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_offload.c')
0 files changed, 0 insertions, 0 deletions