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[Xen-ia64-devel] merge breakage - free_domheap_pages() BUG

from [Alex Williamson]

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To:	xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-ia64-devel] merge breakage - free_domheap_pages() BUG
From:	Alex Williamson <alex.williamson@xxxxxx>
Date:	Mon, 12 Mar 2007 11:51:26 -0600
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   I just merged us up with xen-unstable.hg and discovered a new
regression.  free_domheap_pages() is failing the check for:

(pg[i].u.inuse.type_info & PGT_count_mask) != 0

This used to be an ASSERT, so we never saw it.  Now it causes problems.
We hit this anytime a domain is shutdown/destroyed.  Here's the call
trace:

(XEN)  [<f000000004035830>] free_domheap_pages+0x450/0x860
(XEN)                                 sp=f000000007c17c30 bsp=f000000007c11608
(XEN)  [<f000000004078fc0>] mm_teardown+0x3a0/0x4b0
(XEN)                                 sp=f000000007c17c30 bsp=f000000007c114f0
(XEN)  [<f000000004064320>] domain_relinquish_resources+0x60/0x100
(XEN)                                 sp=f000000007c17c30 bsp=f000000007c114d0
(XEN)  [<f0000000040203a0>] domain_kill+0xc0/0x320
(XEN)                                 sp=f000000007c17c30 bsp=f000000007c114a0
(XEN)  [<f00000000401cab0>] do_domctl+0x330/0x18d0
(XEN)                                 sp=f000000007c17c40 bsp=f000000007c11420
(XEN)  [<f000000004002e50>] fast_hypercall+0x170/0x320
(XEN)                                 sp=f000000007c17e00 bsp=f000000007c11420

Patches welcome ;^)  Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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