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| author | Eric Dumazet <edumazet@google.com> | 2012-06-10 23:11:57 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-11 10:12:04 +0200 |
| commit | 16b0dc29c1af9df341428f4c49ada4f626258082 (patch) | |
| tree | 489edb6c490de6e3ef349dc3d4e8b0a5d726d161 /drivers/net/dummy.c | |
| parent | net: Reorder initialization in ip_route_output to fix gcc warning (diff) | |
| download | linux-16b0dc29c1af9df341428f4c49ada4f626258082.tar.xz linux-16b0dc29c1af9df341428f4c49ada4f626258082.zip | |
dummy: fix rcu_sched self-detected stalls
Trying to "modprobe dummy numdummies=30000" triggers :
INFO: rcu_sched self-detected stall on CPU { 8} (t=60000 jiffies)
After this splat, RTNL is locked and reboot is needed.
We must call cond_resched() to avoid this, even holding RTNL.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dummy.c')
| -rw-r--r-- | drivers/net/dummy.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c index 442d91a2747b..bab0158f1cc3 100644 --- a/drivers/net/dummy.c +++ b/drivers/net/dummy.c @@ -187,8 +187,10 @@ static int __init dummy_init_module(void) rtnl_lock(); err = __rtnl_link_register(&dummy_link_ops); - for (i = 0; i < numdummies && !err; i++) + for (i = 0; i < numdummies && !err; i++) { err = dummy_init_one(); + cond_resched(); + } if (err < 0) __rtnl_link_unregister(&dummy_link_ops); rtnl_unlock(); |