Nikolay Aleksandrov c7c6effdef
netconsole: fix multiple race conditions ...
In every netconsole option that can be set through configfs there's a
race when checking for nt->enabled since it can be modified at the same
time. Probably the most damage can be done by store_enabled when racing
with another instance of itself. Fix all the races with one stone by
moving the mutex lock around the ->store call for all options.
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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