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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2014-03-31 20:14:10 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-31 16:38:12 -0400 |
| commit | 43a43b6040165f7b40b5b489fe61a4cb7f8c4980 (patch) | |
| tree | b4af50e6130041a6e72c5e97aa8f495e8475b969 /tools | |
| parent | 44934fac2171d5b0ed1838293f2e2db7508ad628 (diff) | |
| download | lwn-43a43b6040165f7b40b5b489fe61a4cb7f8c4980.tar.gz lwn-43a43b6040165f7b40b5b489fe61a4cb7f8c4980.zip | |
ipv6: some ipv6 statistic counters failed to disable bh
After commit c15b1ccadb323ea ("ipv6: move DAD and addrconf_verify
processing to workqueue") some counters are now updated in process context
and thus need to disable bh before doing so, otherwise deadlocks can
happen on 32-bit archs. Fabio Estevam noticed this while while mounting
a NFS volume on an ARM board.
As a compensation for missing this I looked after the other *_STATS_BH
and found three other calls which need updating:
1) icmp6_send: ip6_fragment -> icmpv6_send -> icmp6_send (error handling)
2) ip6_push_pending_frames: rawv6_sendmsg -> rawv6_push_pending_frames -> ...
(only in case of icmp protocol with raw sockets in error handling)
3) ping6_v6_sendmsg (error handling)
Fixes: c15b1ccadb323ea ("ipv6: move DAD and addrconf_verify processing to workqueue")
Reported-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions