Linux v4.13-rc6
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From caa7919d0402b9ebe40ac3f5228c31e28a933327 Mon Sep 17 00:00:00 2001
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From: Laura Abbott <labbott@redhat.com>
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Date: Wed, 16 Aug 2017 14:56:31 -0700
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Subject: [PATCH] mm/vmalloc: Don't unconditonally use __GFP_HIGHMEM
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To: Andrew Morton <akpm@linux-foundation.org>
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To: Michal Hocko <mhocko@suse.com>
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To: Vlastimil Babka <vbabka@suse.cz>
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To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
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Cc: linux-mm@kvack.org
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Cc: linux-kernel@vger.kernel.org
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Commit 19809c2da28a ("mm, vmalloc: use __GFP_HIGHMEM implicitly")
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added use of __GFP_HIGHMEM for allocations. vmalloc_32 may use
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GFP_DMA/GFP_DMA32 which does not play nice with __GFP_HIGHMEM
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and will drigger a BUG in gfp_zone. Only add __GFP_HIGHMEM if
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we aren't using GFP_DMA/GFP_DMA32.
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1482249
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Fixes: 19809c2da28a ("mm, vmalloc: use __GFP_HIGHMEM implicitly")
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Signed-off-by: Laura Abbott <labbott@redhat.com>
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---
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 mm/vmalloc.c | 13 ++++++++-----
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 1 file changed, 8 insertions(+), 5 deletions(-)
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diff --git a/mm/vmalloc.c b/mm/vmalloc.c
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index 8698c1c86c4d..a47e3894c775 100644
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--- a/mm/vmalloc.c
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+++ b/mm/vmalloc.c
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@@ -1671,7 +1671,10 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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 	struct page **pages;
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 	unsigned int nr_pages, array_size, i;
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 	const gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;
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-	const gfp_t alloc_mask = gfp_mask | __GFP_HIGHMEM | __GFP_NOWARN;
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+	const gfp_t alloc_mask = gfp_mask | __GFP_NOWARN;
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+	const gfp_t highmem_mask = (gfp_mask & (GFP_DMA | GFP_DMA32)) ?
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+					0 :
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+					__GFP_HIGHMEM;
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 	nr_pages = get_vm_area_size(area) >> PAGE_SHIFT;
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 	array_size = (nr_pages * sizeof(struct page *));
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@@ -1679,7 +1682,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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 	area->nr_pages = nr_pages;
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 	/* Please note that the recursion is strictly bounded. */
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 	if (array_size > PAGE_SIZE) {
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-		pages = __vmalloc_node(array_size, 1, nested_gfp|__GFP_HIGHMEM,
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+		pages = __vmalloc_node(array_size, 1, nested_gfp|highmem_mask,
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 				PAGE_KERNEL, node, area->caller);
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 	} else {
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 		pages = kmalloc_node(array_size, nested_gfp, node);
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@@ -1700,9 +1703,9 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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 		}
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 		if (node == NUMA_NO_NODE)
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-			page = alloc_page(alloc_mask);
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+			page = alloc_page(alloc_mask|highmem_mask);
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 		else
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-			page = alloc_pages_node(node, alloc_mask, 0);
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+			page = alloc_pages_node(node, alloc_mask|highmem_mask, 0);
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 		if (unlikely(!page)) {
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 			/* Successfully allocated i pages, free them in __vunmap() */
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@@ -1710,7 +1713,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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 			goto fail;
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 		}
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 		area->pages[i] = page;
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-		if (gfpflags_allow_blocking(gfp_mask))
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+		if (gfpflags_allow_blocking(gfp_mask|highmem_mask))
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 			cond_resched();
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 	}
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-- 
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2.13.0
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							@ -1 +1 @@
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039a8e38473323ed9f6c4415b4c3a36777efac34
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14ccee78fc82f5512908f4424f541549a5705b89
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								kernel.spec
									
									
									
									
									
								
							
							
						
						
									
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								kernel.spec
									
									
									
									
									
								
							@ -67,9 +67,9 @@ Summary: The Linux kernel
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# The next upstream release sublevel (base_sublevel+1)
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%define upstream_sublevel %(echo $((%{base_sublevel} + 1)))
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# The rc snapshot level
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%global rcrev 5
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%global rcrev 6
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# The git snapshot level
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%define gitrev 4
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%define gitrev 0
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# Set rpm version accordingly
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%define rpmversion 4.%{upstream_sublevel}.0
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%endif
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@ -649,9 +649,6 @@ Patch617: Fix-for-module-sig-verification.patch
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# request for bug fix
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Patch618: iio-race-fix.patch
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# rhbz 1482249
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Patch619: 0001-mm-vmalloc-Don-t-unconditonally-use-__GFP_HIGHMEM.patch
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# END OF PATCH DEFINITIONS
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%endif
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@ -2205,6 +2202,10 @@ fi
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#
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#
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%changelog
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* Mon Aug 21 2017 Justin M. Forbes <jforbes@fedoraproject.org> - 4.13.0-0.rc6.git0.1
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- Disable debugging options.
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- Linux v4.13-rc6
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* Fri Aug 18 2017 Justin M. Forbes <jforbes@fedoraproject.org> - 4.13.0-0.rc5.git4.1
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- Linux v4.13-rc5-130-g039a8e384733
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								sources
									
									
									
									
									
								
							
							
						
						
									
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								sources
									
									
									
									
									
								
							@ -1,4 +1,3 @@
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SHA512 (perf-man-4.12.tar.gz) = 4d3bbda1f520dba0007c351af46f45085fe4842074eb2e01aee736fd369df595f8f72ed6c1192715f1120bf3353279777f9dca1178fe93bffe5be2de700d409c
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SHA512 (linux-4.12.tar.xz) = 8e81b41b253e63233e92948941f44c6482acb52aa3a3fd172f03a38a86f2c35b2ad4fd407acd1bc3964673eba344fe104d3a03e3ff4bf9cd1f22bd44263bd728
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SHA512 (patch-4.13-rc5.xz) = eebba5b56aa93aaea8ff450febbd13bb5ffef9a8331666dc6ac44a73b355e8ec36d9d27da1aaec07e45844669bd31e9d8fadd278aa6d04356af2aa90387d65ac
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SHA512 (patch-4.13-rc5-git4.xz) = a3ad1e99aecfa55ff9f6f9e13a39a594e3ba463c905b2682683a6a667b6c323ae668befc9d71ee21a1ecf6fe313402aa40a4ce3e2da5db5a1b3cf4e3722ee642
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SHA512 (patch-4.13-rc6.xz) = bc3dbb6c69a663614132c85cf51b0c390d6c8f6f5be4f950ee5425a16c3b929e59e98fd6bc7ea601f7b369af0e9cad4f21276a12707c6c001f500daaafb07860
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