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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-12 18:28:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-12 18:28:00 -0700
commitb08fc5277aaa1d8ea15470d38bf36f19dfb0e125 (patch)
tree1910dc474cb1ede95581dd9faa81a3bebeded0dc /arch/s390/kvm
parent4597fcff07044d89c646d0c5d8b42cd976d966a1 (diff)
parent9d2a789c1db75d0f55b14fa57bec548d94332ad8 (diff)
downloadblackbird-op-linux-b08fc5277aaa1d8ea15470d38bf36f19dfb0e125.tar.gz
blackbird-op-linux-b08fc5277aaa1d8ea15470d38bf36f19dfb0e125.zip
Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull more overflow updates from Kees Cook: "The rest of the overflow changes for v4.18-rc1. This includes the explicit overflow fixes from Silvio, further struct_size() conversions from Matthew, and a bug fix from Dan. But the bulk of it is the treewide conversions to use either the 2-factor argument allocators (e.g. kmalloc(a * b, ...) into kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a * b) into vmalloc(array_size(a, b)). Coccinelle was fighting me on several fronts, so I've done a bunch of manual whitespace updates in the patches as well. Summary: - Error path bug fix for overflow tests (Dan) - Additional struct_size() conversions (Matthew, Kees) - Explicitly reported overflow fixes (Silvio, Kees) - Add missing kvcalloc() function (Kees) - Treewide conversions of allocators to use either 2-factor argument variant when available, or array_size() and array3_size() as needed (Kees)" * tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits) treewide: Use array_size in f2fs_kvzalloc() treewide: Use array_size() in f2fs_kzalloc() treewide: Use array_size() in f2fs_kmalloc() treewide: Use array_size() in sock_kmalloc() treewide: Use array_size() in kvzalloc_node() treewide: Use array_size() in vzalloc_node() treewide: Use array_size() in vzalloc() treewide: Use array_size() in vmalloc() treewide: devm_kzalloc() -> devm_kcalloc() treewide: devm_kmalloc() -> devm_kmalloc_array() treewide: kvzalloc() -> kvcalloc() treewide: kvmalloc() -> kvmalloc_array() treewide: kzalloc_node() -> kcalloc_node() treewide: kzalloc() -> kcalloc() treewide: kmalloc() -> kmalloc_array() mm: Introduce kvcalloc() video: uvesafb: Fix integer overflow in allocation UBIFS: Fix potential integer overflow in allocation leds: Use struct_size() in allocation Convert intel uncore to struct_size ...
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/gaccess.c2
-rw-r--r--arch/s390/kvm/kvm-s390.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c
index 8e2b8647ee12..07d30ffcfa41 100644
--- a/arch/s390/kvm/gaccess.c
+++ b/arch/s390/kvm/gaccess.c
@@ -847,7 +847,7 @@ int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, u8 ar, void *data,
nr_pages = (((ga & ~PAGE_MASK) + len - 1) >> PAGE_SHIFT) + 1;
pages = pages_array;
if (nr_pages > ARRAY_SIZE(pages_array))
- pages = vmalloc(nr_pages * sizeof(unsigned long));
+ pages = vmalloc(array_size(nr_pages, sizeof(unsigned long)));
if (!pages)
return -ENOMEM;
need_ipte_lock = psw_bits(*psw).dat && !asce.r;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 7142508ca6e1..3b7a5151b6a5 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1729,7 +1729,7 @@ static int kvm_s390_set_cmma_bits(struct kvm *kvm,
if (args->count == 0)
return 0;
- bits = vmalloc(sizeof(*bits) * args->count);
+ bits = vmalloc(array_size(sizeof(*bits), args->count));
if (!bits)
return -ENOMEM;
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