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author | Ido Schimmel <idosch@mellanox.com> | 2016-06-20 11:53:20 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2016-06-22 16:31:03 -0400 |
commit | 942f64c4c2be19a1b4a0c4295182b42d153899bf (patch) | |
tree | 368b4821032c4965e23338627a0257b37a398f9d /net/kcm | |
parent | 6b65ca06e1af38ea90074a47fcb5748ee9309b94 (diff) | |
download | linux-942f64c4c2be19a1b4a0c4295182b42d153899bf.tar.bz2 |
team: Fix possible deadlock during team enslave
Both dev_uc_sync_multiple() and dev_mc_sync_multiple() require the
source device to be locked by netif_addr_lock_bh(), but this is missing
in team's enslave function, so add it.
This fixes the following lockdep warning:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(_xmit_ETHER/1);
local_irq_disable();
lock(&(&mc->mca_lock)->rlock);
lock(&team_netdev_addr_lock_key);
<Interrupt>
lock(&(&mc->mca_lock)->rlock);
*** DEADLOCK ***
Fixes: cb41c997d444 ("team: team should sync the port's uc/mc addrs when add a port")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/kcm')
0 files changed, 0 insertions, 0 deletions