Re: [Xen-devel] block-detatch on 2.6.23.8 guest == WARNING: at block/ll_rw_blk.c:1579 blk_remove_plug()

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

What kernel? The warning is that irqs are enabled, but in the kernel I just
looked at irqs should definitely be disabled on that call path (by
blkfront_closing()).

 -- Keir

On 23/11/07 13:38, "Christopher S. Aker" <caker@xxxxxxxxxxxx> wrote:

> Dom0:
> root@dallas38:~# xm block-detach xencaker 51744
> root@dallas38:~#
> 
> DomU:
> WARNING: at block/ll_rw_blk.c:1579 blk_remove_plug()
>   [<c035bed6>] blk_remove_plug+0x66/0x70
>   [<c035bf58>] blk_stop_queue+0x8/0x20
>   [<c039e429>] blkfront_closing+0x39/0x80
>   [<c039ed77>] backend_changed+0x337/0x410
>   [<c0161c7b>] kfree+0x7b/0xb0
>   [<c037b987>] xenbus_gather+0x77/0xa0
>   [<c037a4d3>] xenbus_read_driver_state+0x33/0x50
>   [<c037cde2>] otherend_changed+0x92/0xa0
>   [<c037bbab>] xenwatch_thread+0x6b/0x130
>   [<c0132e90>] autoremove_wake_function+0x0/0x50
>   [<c037bb40>] xenwatch_thread+0x0/0x130
>   [<c0132cb4>] kthread+0x74/0x80
>   [<c0132c40>] kthread+0x0/0x80
>   [<c01073e7>] kernel_thread_helper+0x7/0x10
>   =======================
> 
> -Chris
> 
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