From 83fd5cc6481c6b7fa8b45f8a7e0aa7120213430b Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 16 Dec 2008 19:17:11 +0100 Subject: [PATCH] AMD IOMMU: allocate rlookup_table with __GFP_ZERO Impact: fix bug which can lead to panic in prealloc_protection_domains() Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 30ae2701b3df..c90a15eba5c5 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -1074,7 +1074,8 @@ int __init amd_iommu_init(void) goto free; /* IOMMU rlookup table - find the IOMMU for a specific device */ - amd_iommu_rlookup_table = (void *)__get_free_pages(GFP_KERNEL, + amd_iommu_rlookup_table = (void *)__get_free_pages( + GFP_KERNEL | __GFP_ZERO, get_order(rlookup_table_size)); if (amd_iommu_rlookup_table == NULL) goto free; -- 2.20.1