diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-02-19 10:42:03 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-28 05:38:40 -0800 |
| commit | a515e3ea9d17fe16b2b15aab8dd7f85f9a3eabac (patch) | |
| tree | cd6362bb525783f0c52ae2a65f846a2a59773f61 /net | |
| parent | 0680a2c2b6c92fdbb2ff8a8c87b0207db5323de7 (diff) | |
ppp: set qdisc_tx_busylock to avoid LOCKDEP splat
[ Upstream commit 303c07db487be59ae9fda10600ea65ca11c21497 ]
If a qdisc is installed on a ppp device, its possible to get
a lockdep splat under stress, because nested dev_queue_xmit() can
lock busylock a second time (on a different device, so its a false
positive)
Avoid this problem using a distinct lock_class_key for ppp
devices.
Reported-by: Yanko Kaneti <yaneti@declera.com>
Tested-by: Yanko Kaneti <yaneti@declera.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions