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| author |   Eric Dumazet <edumazet@google.com> | 2013-02-19 10:42:03 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-02-19 14:33:55 -0500 |
| commit | 303c07db487be59ae9fda10600ea65ca11c21497 (patch) | |
| tree | 23a66e53bed3b6f8093d815890388b9057760bd9 /net | |
| parent | atl1c: restore buffer state (diff) | |
| download | linux-dev-303c07db487be59ae9fda10600ea65ca11c21497.tar.xz linux-dev-303c07db487be59ae9fda10600ea65ca11c21497.zip | |
ppp: set qdisc_tx_busylock to avoid LOCKDEP splat
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>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions