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authorGustavo A. R. Silva <gustavoars@kernel.org>2020-06-17 16:34:07 -0500
committerWill Deacon <will@kernel.org>2020-06-18 10:45:20 +0100
commitbf508ec95ca3b902f14bb311a7709e5cb57fbc49 (patch)
tree9bcd0dd8bf711aed4f39fc044cbe1e1789fdf552 /arch
parent618e07865b7453d02410c1f3407c2d78a670eabb (diff)
arm64: kexec_file: Use struct_size() in kmalloc()
Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200617213407.GA1385@embeddedor Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/kernel/machine_kexec_file.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index 522e6f517ec0..361a1143e09e 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c
@@ -219,8 +219,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz)
MEMBLOCK_NONE, &start, &end, NULL)
nr_ranges++;
- cmem = kmalloc(sizeof(struct crash_mem) +
- sizeof(struct crash_mem_range) * nr_ranges, GFP_KERNEL);
+ cmem = kmalloc(struct_size(cmem, ranges, nr_ranges), GFP_KERNEL);
if (!cmem)
return -ENOMEM;