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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2010-01-30 02:53:27 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-03 18:11:11 -0800 |
| commit | 180211b841b5bf13ab10d19202adab3eb7749f6c (patch) | |
| tree | eeb1a2a2136e03a4a38dc09d26b8dd83b47994c9 /net/netlink | |
| parent | f98bfbd78c37c5946cc53089da32a5f741efdeb7 (diff) | |
| download | op-kernel-dev-180211b841b5bf13ab10d19202adab3eb7749f6c.zip op-kernel-dev-180211b841b5bf13ab10d19202adab3eb7749f6c.tar.gz | |
af_key: fix netns ops ordering on module load/unload
1. After sock_register() returns, it's possible to create sockets,
even if module still not initialized fully (blame generic module code
for that!)
2. Consequently, pfkey_create() can be called with pfkey_net_id still not
initialized which will BUG_ON in net_generic():
kernel BUG at include/net/netns/generic.h:43!
3. During netns shutdown, netns ops should be unregistered after
key manager unregistered because key manager calls can be triggered
from xfrm_user module:
general protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
pfkey_broadcast+0x111/0x210 [af_key]
pfkey_send_notify+0x16a/0x300 [af_key]
km_state_notify+0x41/0x70
xfrm_flush_sa+0x75/0x90 [xfrm_user]
4. Unregister netns ops after socket ops just in case and for symmetry.
Reported by Luca Tettamanti.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Tested-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink')
0 files changed, 0 insertions, 0 deletions
