New: [-next-20121129] memory leak/page allocator fragmentation?
https://bugzilla.kernel.org/show_bug.cgi?id=51301
Summary: [-next-20121129] memory leak/page allocator
fragmentation?
Product: Virtualization
Version: unspecified
Kernel Version: -next-20121129
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: NoWith a single 2Gb/4-core VM on a 10Gb/8-core host, the _host_ ran out of 32kb page blocks. I can't be certain that it was kvm because the OOM condition triggered a GP fault in the SLUB allocator. (The other suspect is nouveau.)
I have attached the kernel log and a SysRq Show Memory dump of the machine shortly after boot without running kvm.
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[Bug 51301] [-next-20121129] memory leak/page allocator fragmentation?
https://bugzilla.kernel.org/show_bug.cgi?id=51301
--- Comment #1 from Peter Hurley <[email protected]> 2012-12-04 16:09:26 --- Created an attachment (id=88441)
--> (https://bugzilla.kernel.org/attachment.cgi?id=88441)
kernel log showing OOM condition
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[Bug 51301] [-next-20121129] memory leak/page allocator fragmentation?
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=51301
--- Comment #2 from Peter Hurley <[email protected]> 2012-12-04 16:11:10 --- Created an attachment (id=88451)
--> (https://bugzilla.kernel.org/attachment.cgi?id=88451)
sysrq/show memory without kvm shortly after boot
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[Bug 51301] [-next-20121129] memory leak/page allocator fragmentation?
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=51301
--- Comment #3 from Peter Hurley <[email protected]> 2012-12-04 16:23:47 --- Created an attachment (id=88461)
--> (https://bugzilla.kernel.org/attachment.cgi?id=88461)
sysrq/show memory with kvm running a single 2gb vm
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[Bug 51301] [-next-20121129] memory leak/page allocator fragmentation?
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=51301
--- Comment #4 from Peter Hurley <[email protected]> 2012-12-04 16:48:22 --- Not sure why I picked kvm/nouveau for this OOM ;)
Could be any number of apps over a 3.5 period...
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[Bug 51301] [-next-20121129] memory leak/page allocator fragmentation?
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=51301
Marcelo Tosatti <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #5 from Marcelo Tosatti <[email protected]> 2012-12-04 21:42:00 ---
Dec 4 09:38:25 thor kernel: [322576.251464] firefox: page allocation failure:
order:4, mode:0x80c0d0
This is an order-4 allocation failure. This is due to kernel failure to allocate physically contiguous region of memory. Please reassign to "Memory Management" component.
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[Bug 51301] [-next-20121129] memory leak/page allocator fragmentation?
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=51301
Alan <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected] Component|kvm |Page Allocator Version|unspecified |2.5 AssignedTo|virtualization_kvm@kernel-b |[email protected] |ugs.osdl.org | Product|Virtualization |Memory Management
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