[PATCH] introduce a default off mode for kmemleak

Hi, Kmemleak can be very useful in figuring out where a kernel leak is suspected, but I've run into issues it which makes it hard to enable by default - reports false positives, oom kills on low memory systems (512 MB). Although these can be ...

Message posted on the July 13th, 2010 - 4:40 PM ET

[PATCH RFC] kmemleak vs. memory hotplug

Hi, I noticed in the Kconfig that kmemleak can not be set without MEMORY_HOTPLUG being unset. I'd like to be able to enable both. Below, is an rfc patch, completely untested, as a starting point. Hopefully, ppl more knowledgeable in this area can ...

Message posted on the March 22nd, 2010 - 3:00 PM ET

Possible kmemleak issue, but I'm confused

Hi Catalin, I wasn't sure what list to post this to. Is there a list where kmemleak is predominately discussed, outside of LKML? I have a "fix" for kmemleak that we are using in Sony's Linux kernel (circa 2.6.29), that I wanted to ...

Message posted on the August 24th, 2010 - 7:20 PM ET

[PATCH] kmemleak: build kmemleak-test.c as a module-only

mm/kmemleak-test.c is used to provide an example of how kmemleak tool works. Memory is leaked at module unload-time, so building the test in kernel (Y) makes the leaks impossible and the test useless. Qualify DEBUG_KMEMLEAK_TEST config symbol with ...

Message posted on the March 16th, 2011 - 1:20 PM ET

lockdep reports about recursive locking in kmemleak

Hello, I found a following message in dmesg. Probably we should to do something similar as for debug_objects, it sets own class for parent->list_lock. Does anyone want to fix that? ==[ INFO: possible recursive locking detected ] 3.3.0+ #87 Not ...

Message posted on the April 27th, 2012 - 7:40 AM ET

[PATCH] Debugging: Keep track of page owners

From: mel@skynet.ie (Mel Gorman) PAGE_OWNER tracks free pages by setting page->order to -1. However, it is set during __free_pages() which is not the only free path as __pagevec_free() and free_compound_page() do not go through __free_pages(). ...

Message posted on the December 7th, 2012 - 4:30 PM ET

[PATCH 1/3 v3] mm: Factor out memory isolate functions

Now mm/page_alloc.c has some memory isolation functions but they are used oly when we enable CONFIG_{CMA|MEMORY_HOTPLUG|MEMORY_FAILURE}. So let's make it configurable by new CONFIG_MEMORY_ISOLATION so that it can reduce binary size and we can check ...

Message posted on the July 11th, 2012 - 11:00 PM ET

linux-next: Tree for Jan 20

Hi all, Changes since 20120119: Linus' tree lost its build failure. The cifs tree lost its build failure. The akpm tree gained a build failure for which I applied a patch. - I have created today's linux-next tree at ...

Message posted on the January 19th, 2012 - 9:20 PM ET

linux-next: Tree for Jan 19

Hi all, Changes since 20120118: Linus' tree gained a build failure for which I applied a patch. The cifs tree gained a build failure so I used the version from next-20120118. The kmap_atomic tree lost its conflict. - I have created today's ...

Message posted on the January 18th, 2012 - 9:10 PM ET

[RFC] on general object IDs again

Hi all, here is an idea on general object IDs for kernel which could be exported to user-space apps. The generation is done via the new syscall __NR_gen_obj_id. The user-space application is supposed to put a request and provide memory for ...

Message posted on the January 11th, 2012 - 11:30 AM ET

linux-next: Tree for Dec 14

Hi all, Changes since 20111213: New tree: uapi The net-next tree gained a conflict against the net tree and a build failure for which I applied a patch. The sound-asoc tree lost its build failure. The driver-core tree gained a build failure so ...

Message posted on the December 14th, 2011 - 2:30 AM ET

linux-next: Tree for Nov 16

Hi all, The patches have returned to www.kernel.org in http://www.kernel.org/pub/linux/kernel/next/ . I propose to only keep a couple of weeks worth of patches there (I can recreate them on demand if necessary). Changes since 20111115: New ...

Message posted on the November 15th, 2011 - 9:40 PM ET

linux-next: Tree for Nov 15

Hi all, The patch is still absent from kernel.org. Changes since 20111114: The m86knommu tree lost 2 conflicts. The pm tree still had its build failures for which I reverted a commit and applied a patch. - I have created today's linux-next ...

Message posted on the November 14th, 2011 - 9:20 PM ET

Lockdep warning

With a new version of the staging driver rtl8192e, I'm getting the lockdep warning posted below. The lock in question is for a timer that uses init_timer() for initialization. From the definition of that macro, I thought this was initialized with a ...

Message posted on the August 26th, 2011 - 1:30 PM ET

kmemleak help