-----Original Message-----
From: devel-bounces(a)lists.fedoraproject.org [mailto:devel-
bounces(a)lists.fedoraproject.org] On Behalf Of Michal Schmidt
Sent: Wednesday, September 15, 2010 8:03 PM
To: devel(a)lists.fedoraproject.org
Subject: Re: Problem with 2.6.35.4-12.fc14.x86_64
On Wed, 15 Sep 2010 17:44:47 +0200 Morten P.D. Stevens wrote:
> Does anyone know something about this issue?
>[...]
> ===================================================
> [ INFO: suspicious rcu_dereference_check() usage. ]
> ---------------------------------------------------
> kernel/sched.c:616 invoked rcu_dereference_check() without
protection!
Try kernel >= 2.6.35.4-21 from Koji. It has this change
Hi Michael,
The same problem with the newest 2.6.35.4-28.fc14.x86_64 kernel.
===================================================
[ 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: [<ffffffff813e9010>]
register_pernet_subsys+0x1f/0x47
stack backtrace:
Pid: 1, comm: swapper Not tainted 2.6.35.4-28.fc14.x86_64 #1
Call Trace:
[<ffffffff8107bd3a>] lockdep_rcu_dereference+0xaa/0xb3
[<ffffffff813e04b9>] sock_update_classid+0x7c/0xa2
[<ffffffff813e054a>] sk_alloc+0x6b/0x77
[<ffffffff8140b281>] __netlink_create+0x37/0xab
[<ffffffff813f941c>] ? rtnetlink_rcv+0x0/0x2d
[<ffffffff8140cee1>] netlink_kernel_create+0x74/0x19d
[<ffffffff8149c3ca>] ? __mutex_lock_common+0x339/0x35b
[<ffffffff813f7e9c>] rtnetlink_net_init+0x2e/0x48
[<ffffffff813e8d7a>] ops_init+0xe9/0xff
[<ffffffff813e8f0d>] register_pernet_operations+0xab/0x130
[<ffffffff813e901f>] register_pernet_subsys+0x2e/0x47
[<ffffffff81db7bca>] rtnetlink_init+0x53/0x102
[<ffffffff81db835c>] netlink_proto_init+0x126/0x143
[<ffffffff81db8236>] ? netlink_proto_init+0x0/0x143
[<ffffffff810021b8>] do_one_initcall+0x72/0x186
[<ffffffff81d78ebc>] kernel_init+0x23b/0x2c9
[<ffffffff8100aae4>] kernel_thread_helper+0x4/0x10
[<ffffffff8149e2d0>] ? restore_args+0x0/0x30
[<ffffffff81d78c81>] ? kernel_init+0x0/0x2c9
[<ffffffff8100aae0>] ? kernel_thread_helper+0x0/0x10
Best regards,
Morten