net: hold rtnl again in dump callbacks

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Commit e67f88dd12 (dont hold rtnl mutex during netlink dump callbacks)
missed fact that rtnl_fill_ifinfo() must be called with rtnl held.

Because of possible deadlocks between two mutexes (cb_mutex and rtnl),
its not easy to solve this problem, so revert this part of the patch.

It also forgot one rcu_read_unlock() in FIB dump_rules()

Add one ASSERT_RTNL() in rtnl_fill_ifinfo() to remind us the rule.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Eric Dumazet 2011-05-25 07:34:04 +00:00 • committed by David S. Miller

parent 1dcb14d9e8

commit 2907c35ff6

2 changed files with 8 additions and 2 deletions

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1

net/core/fib_rules.c

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9

net/core/rtnetlink.c

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