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Re: [Xen-devel] xenU kernel doesn't start in unstable



> # xm create kernel=/tmp/vmlinuz
> Using config file "/etc/xen/xmdefconfig".
> Started domain TestDomain, console on port 9640
> # xm list
> Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> Domain-0           0      170    0  r----    817.2
> TestDomain        40       32    0  ----c      0.1    9640
> 
> This is with the xenU_defconfig from the xen bk tree, though
> the same crash has also been observed with the Fedora rawhide
> kernel.

I can't reproduce a crash with the vanilla unstable tree.

> One place where the system crashes is at dmi scan time, because
> __ioremap() is a "return NULL" when CONFIG_XEN_PHYSDEV_ACCESS is
> not defined, which makes dmi_iterate's memcpy follow a NULL
> pointer.

Which kernel is your patch against? The plain 2.6.10 dmi_scan.c only
uses bt_ioremap() AFAICT, and it already checks the return value for
NULL. 

 -- Keir


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