[haiku-bugs] Re: [Haiku] #6129: Kernel hang after allocate_commpage_entry
- From: "andreasf" <trac@xxxxxxxxxxxx>
- Date: Mon, 07 Jun 2010 18:50:59 -0000
#6129: Kernel hang after allocate_commpage_entry
---------------------------+------------------------------------------------
Reporter: andreasf | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Keywords: | Platform: PowerPC
Blockedby: 5193 | Patch: 0
Blocking: 1048 |
---------------------------+------------------------------------------------
Comment(by andreasf):
It comes from USB bus manager's {{{new(std::nothrow) Stack()}}}.
Before [source:haiku/trunk/src/add-
ons/kernel/bus_managers/usb/usb.cpp?rev=36247#L75 that call] I can
`dprintf()` a test message just fine, while as first instruction of the
{{{Stack()}}} constructor I get garbage printed (same for
{{{TRACE_USB}}}).
Seeing nothing fundamentally wrong with the constructor itself, I could
think of two possible reasons for this failure:
* {{{new(std::nothrow)}}} might be broken in this context (it looks like
a simple {{{malloc}}} though if I read
[source:haiku/trunk/headers/private/kernel/util/kernel_cpp.h?rev=33670#L43
kernel_cpp.h] right), or
* something could be going wrong with the ELF sections (ctors or data).
There is a special add-on linker script but it seems
[source:haiku/trunk/build/jam/KernelRules?rev=30825#L112 it is not used].
Concerning your PLT observations, the
[source:haiku/trunk/src/system/ldscripts/ppc/kernel.ld?rev=34857 kernel
linker script] does include multiple mentions of {{{plt}}} sections. And
then there's the
[source:haiku/trunk/src/system/kernel/Jamfile?rev=36158#L85 removal of ppc
linkhack.so -shared flag] that might have undesired effects?
--
Ticket URL: <http://dev.haiku-os.org/ticket/6129#comment:11>
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