[RFC][PATCH 0/2] kmemleak: Fix some false positives with special scan
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From: Hiroshi DOYU on 14 May 2010 03:20 Hi, I always get the false positives for the iommu 1st level page table since it stores the pointer to the 2nd level page table, but it is converted to a physical address with some attribute bits. "kmemleak_ignore" can cover this problem, but will loose the advantage of powerful kmemleak detection. So I experimentally implement the APIs to register the special scan area with the address conversion function. I'm not sure if this APIs make sense or not, but it works for our OMAP IOMMU case now. Any comment would be appreciated. Hiroshi DOYU (2): kmemleak: Fix some false positives with special scan kmemleak: test: Add a special scan test case include/linux/kmemleak.h | 4 ++ mm/Makefile | 2 +- mm/kmemleak-special-test.c | 89 ++++++++++++++++++++++++++++++++++++++++++++ mm/kmemleak.c | 83 +++++++++++++++++++++++++++++++++++++++- 4 files changed, 174 insertions(+), 4 deletions(-) create mode 100644 mm/kmemleak-special-test.c -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |