* cgroups/netlink related rcu_dereference_check() without protection (2.6.35.4)
@ 2010-09-02 1:43 Dave Jones
2010-09-02 5:53 ` Li Zefan
0 siblings, 1 reply; 2+ messages in thread
From: Dave Jones @ 2010-09-02 1:43 UTC (permalink / raw)
To: netdev; +Cc: Paul Menage, Li Zefan
I see this during boot on one of my boxes..
Dave
INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
include/linux/cgroup.h:542 invoked rcu_dereference_check() without protection!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
1 lock held by swapper/1:
#0: (net_mutex){+.+.+.}, at: [<c074b595>] register_pernet_subsys+0x17/0x34
stack backtrace:
Pid: 1, comm: swapper Not tainted 2.6.35.4-15.fc14.i686.PAE #1
Call Trace:
[<c07e2197>] ? printk+0x25/0x2e
[<c0467969>] lockdep_rcu_dereference+0x7d/0x86
[<c07440ea>] sock_update_classid+0x6c/0x8e
[<c074416b>] sk_alloc+0x5f/0x6a
[<c07674a9>] __netlink_create+0x2a/0x90
[<c0768d54>] netlink_kernel_create+0x5f/0x14f
[<c075805c>] rtnetlink_net_init+0x23/0x3b
[<c0759412>] ? rtnetlink_rcv+0x0/0x27
[<c074b388>] ops_init+0xda/0xe9
[<c074b4c8>] register_pernet_operations+0x84/0xee
[<c074b5a1>] register_pernet_subsys+0x23/0x34
[<c0ab7e94>] rtnetlink_init+0x42/0xe0
[<c0ab84fa>] netlink_proto_init+0xee/0x103
[<c0ab840c>] ? netlink_proto_init+0x0/0x103
[<c0403182>] do_one_initcall+0x62/0x170
[<c0a809d3>] kernel_init+0x1b9/0x23a
[<c0a8081a>] ? kernel_init+0x0/0x23a
[<c0408fc2>] kernel_thread_helper+0x6/0x10
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: cgroups/netlink related rcu_dereference_check() without protection (2.6.35.4)
2010-09-02 1:43 cgroups/netlink related rcu_dereference_check() without protection (2.6.35.4) Dave Jones
@ 2010-09-02 5:53 ` Li Zefan
0 siblings, 0 replies; 2+ messages in thread
From: Li Zefan @ 2010-09-02 5:53 UTC (permalink / raw)
To: Dave Jones; +Cc: netdev, Paul Menage
Dave Jones wrote:
> I see this during boot on one of my boxes..
>
> Dave
>
> INFO: suspicious rcu_dereference_check() usage. ]
> ---------------------------------------------------
> include/linux/cgroup.h:542 invoked rcu_dereference_check() without protection!
>
Will send out a fix soon.
> other info that might help us debug this:
>
>
> rcu_scheduler_active = 1, debug_locks = 0
> 1 lock held by swapper/1:
> #0: (net_mutex){+.+.+.}, at: [<c074b595>] register_pernet_subsys+0x17/0x34
>
> stack backtrace:
> Pid: 1, comm: swapper Not tainted 2.6.35.4-15.fc14.i686.PAE #1
> Call Trace:
> [<c07e2197>] ? printk+0x25/0x2e
> [<c0467969>] lockdep_rcu_dereference+0x7d/0x86
> [<c07440ea>] sock_update_classid+0x6c/0x8e
> [<c074416b>] sk_alloc+0x5f/0x6a
> [<c07674a9>] __netlink_create+0x2a/0x90
> [<c0768d54>] netlink_kernel_create+0x5f/0x14f
> [<c075805c>] rtnetlink_net_init+0x23/0x3b
> [<c0759412>] ? rtnetlink_rcv+0x0/0x27
> [<c074b388>] ops_init+0xda/0xe9
> [<c074b4c8>] register_pernet_operations+0x84/0xee
> [<c074b5a1>] register_pernet_subsys+0x23/0x34
> [<c0ab7e94>] rtnetlink_init+0x42/0xe0
> [<c0ab84fa>] netlink_proto_init+0xee/0x103
> [<c0ab840c>] ? netlink_proto_init+0x0/0x103
> [<c0403182>] do_one_initcall+0x62/0x170
> [<c0a809d3>] kernel_init+0x1b9/0x23a
> [<c0a8081a>] ? kernel_init+0x0/0x23a
> [<c0408fc2>] kernel_thread_helper+0x6/0x10
>
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2010-09-02 5:48 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-09-02 1:43 cgroups/netlink related rcu_dereference_check() without protection (2.6.35.4) Dave Jones
2010-09-02 5:53 ` Li Zefan
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox