Re: linux-next: Tree for July 20 (lockdep warning)

From: Arnaud Lacombe
Date: Thu Jul 21 2011 - 13:26:00 EST


On Wed, Jul 20, 2011 at 4:00 AM, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> Hi all,
Not sure which tree is involved, but booting a kernel with qemu
triggers the following warning:

WARNING: at kernel/lockdep.c:2529 trace_hardirqs_on_caller+0x52/0x79()
Hardware name: Bochs
Modules linked in:
Pid: 1, comm: swapper Not tainted 3.0.0-rc7-next-20110720+ #3
Call Trace:
[<c101bcfd>] warn_slowpath_common+0x65/0x7a
[<c103da0d>] ? trace_hardirqs_on_caller+0x52/0x79
[<c11df84c>] ? restore_all+0xf/0xf
[<c10137a8>] ? vmalloc_sync_all+0x95/0x95
[<c101bd21>] warn_slowpath_null+0xf/0x13
[<c103da0d>] trace_hardirqs_on_caller+0x52/0x79
[<c10be180>] trace_hardirqs_on_thunk+0xc/0x10
[<c103efb0>] ? cmpxchg_futex_value_locked+0x3d/0x4f
[<c11df84c>] ? restore_all+0xf/0xf
[<c10137a8>] ? vmalloc_sync_all+0x95/0x95
[<c11e0615>] ? iret_exc+0x345/0x984
[<c143b68f>] ? start_kernel+0x28e/0x28e
[<c14477d6>] ? futex_init+0x16/0x64
[<c143b68f>] ? start_kernel+0x28e/0x28e
[<c1001126>] ? do_one_initcall+0x70/0x11a
[<c14477c0>] ? lockdep_proc_init+0x67/0x67
[<c143b68f>] ? start_kernel+0x28e/0x28e
[<c143b6ff>] ? kernel_init+0x70/0xe9
[<c11e023a>] ? kernel_thread_helper+0x6/0xd

- Arnaud
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