Hello, RFC Page owner tracks a call chain that has allocated a page, this patch set extends it with a PAGE_OWNER_TRACK_FREE functionality, that now also tracks a call chain that has freed the page. Page dump, thus, now has the following format: a) page allocated backtrace b) page free backtrace c) backtrace of path that has trigger bad page For a quick example of a case when this new b) part can make a difference please see 0003. Sergey Senozhatsky (3): mm/page_owner: rename page_owner functions mm/page_owner: rename PAGE_EXT_OWNER flag mm/page_owner: track page free call chain include/linux/page_ext.h | 15 ++++++- include/linux/page_owner.h | 16 +++---- lib/Kconfig.debug | 10 +++++ mm/page_alloc.c | 4 +- mm/page_owner.c | 110 +++++++++++++++++++++++++++++++-------------- mm/vmstat.c | 5 ++- 6 files changed, 113 insertions(+), 47 deletions(-) -- 2.9.0.37.g6d523a3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>