Re: Versatile express lockdep warning on poweroff

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On Fri, Apr 11, 2014 at 12:59:41PM +0100, Russell King - ARM Linux wrote:
> This has been going on for a while now... found by the autobuilder.

*PING*

> 
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 717 at kernel/locking/lockdep.c:2742 lockdep_trace_alloc+0xc0/0x100()
> DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags))
> Modules linked in:
> CPU: 0 PID: 717 Comm: halt Not tainted 3.14.0+ #1
> Backtrace:
> [<c0011eb8>] (dump_backtrace) from [<c0012440>] (show_stack+0x18/0x1c)
>  r6:c037350b r5:00000009 r4:00000000 r3:04400100
> [<c0012428>] (show_stack) from [<c0364128>] (dump_stack+0x74/0x94)
> [<c03640b4>] (dump_stack) from [<c001efa4>] (warn_slowpath_common+0x6c/0x8c)
>  r4:ee33fdc0 r3:edf36b40
> [<c001ef38>] (warn_slowpath_common) from [<c001f068>] (warn_slowpath_fmt+0x38/0x40)
>  r8:c000ed04 r7:c0201738 r6:000080d0 r5:000080d0 r4:60000093
> [<c001f034>] (warn_slowpath_fmt) from [<c005edf8>] (lockdep_trace_alloc+0xc0/0x100)
>  r3:c0374738 r2:c0373554
> [<c005ed38>] (lockdep_trace_alloc) from [<c00c20a4>] (kmem_cache_alloc+0x2c/0x114)
>  r4:ee801f00 r3:c04d0d14
> [<c00c2078>] (kmem_cache_alloc) from [<c0201738>] (__vexpress_config_func_get+0x6c/0x178)
>  r10:00000000 r8:c000ed04 r7:c04d52e8 r6:00000000 r5:c04d52e8 r4:c03be2af
> [<c02016cc>] (__vexpress_config_func_get) from [<c0266eb8>] (vexpress_reset_do+0x1c/0x74)
>  r7:00000001 r6:4321fedc r5:c04d52e8 r4:c03be2af
> [<c0266e9c>] (vexpress_reset_do) from [<c0266f54>] (vexpress_power_off+0x1c/0x28)
>  r5:fee1dead r4:c04d9ff8
> [<c0266f38>] (vexpress_power_off) from [<c000f8ac>] (machine_power_off+0x2c/0x34)
> [<c000f880>] (machine_power_off) from [<c004089c>] (kernel_power_off+0x44/0x50)
> [<c0040858>] (kernel_power_off) from [<c0040afc>] (SyS_reboot+0x12c/0x1bc)
> [<c00409d0>] (SyS_reboot) from [<c000eb40>] (ret_fast_syscall+0x0/0x48)
>  r7:00000058 r6:00000001 r5:00000000 r4:00000000
> ---[ end trace eae2f29f1a23e46a ]---
> 
> -- 
> FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
> improving, and getting towards what was expected from it.
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

-- 
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.

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