From c67dc6247576250a9c9f09adcabad0385a1e7d73 Mon Sep 17 00:00:00 2001 From: Roman Penyaev Date: Tue, 5 Mar 2019 15:43:24 -0800 Subject: [PATCH] mm/vmalloc: do not call kmemleak_free() on not yet accounted memory __vmalloc_area_node() calls vfree() on error path, which in turn calls kmemleak_free(), but area is not yet accounted by kmemleak_vmalloc(). Link: http://lkml.kernel.org/r/20190103145954.16942-3-rpenyaev@suse.de Signed-off-by: Roman Penyaev Reviewed-by: Andrew Morton Cc: Michal Hocko Cc: Andrey Ryabinin Cc: Joe Perches Cc: "Luis R. Rodriguez" Cc: Catalin Marinas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmalloc.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 421ae07ffb37..351ec73b3288 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1565,6 +1565,14 @@ void vfree_atomic(const void *addr) __vfree_deferred(addr); } +static void __vfree(const void *addr) +{ + if (unlikely(in_interrupt())) + __vfree_deferred(addr); + else + __vunmap(addr, 1); +} + /** * vfree - release memory allocated by vmalloc() * @addr: memory base address @@ -1591,10 +1599,8 @@ void vfree(const void *addr) if (!addr) return; - if (unlikely(in_interrupt())) - __vfree_deferred(addr); - else - __vunmap(addr, 1); + + __vfree(addr); } EXPORT_SYMBOL(vfree); @@ -1709,7 +1715,7 @@ fail: warn_alloc(gfp_mask, NULL, "vmalloc: allocation failure, allocated %ld of %ld bytes", (area->nr_pages*PAGE_SIZE), area->size); - vfree(area->addr); + __vfree(area->addr); return NULL; } -- 2.39.5