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x86/mce/dev-mcelog: Use struct_size() helper in kzalloc()

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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>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200617211734.GA9636@embeddedor
This commit is contained in:
Gustavo A. R. Silva 2020-06-17 16:17:34 -05:00 committed by Borislav Petkov
parent 5d7f7d1d5e
commit 5ba7821bcf
1 changed files with 1 additions and 1 deletions
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arch/x86/kernel/cpu/mce/dev-mcelog.c
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@ -345,7 +345,7 @@ static __init int dev_mcelog_init_device(void)
int err;
mce_log_len = max(MCE_LOG_MIN_LEN, num_online_cpus());
mcelog = kzalloc(sizeof(*mcelog) + mce_log_len * sizeof(struct mce), GFP_KERNEL);
mcelog = kzalloc(struct_size(mcelog, entry, mce_log_len), GFP_KERNEL);
if (!mcelog)
return -ENOMEM;