From: Yu Zhe yuzhe@nfschina.com
[ Upstream commit 4f1aa35f1fb7d51b125487c835982af792697ecb ]
"struct_size() + n" may cause a integer overflow, use size_add() to handle it.
Signed-off-by: Yu Zhe yuzhe@nfschina.com Link: https://lore.kernel.org/r/20220927070247.23148-1-yuzhe@nfschina.com Signed-off-by: Dan Williams dan.j.williams@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/cxl/pmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index faade12279f0..e0646097a3d4 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -151,7 +151,7 @@ static int cxl_pmem_set_config_data(struct cxl_dev_state *cxlds, return -EINVAL;
/* 4-byte status follows the input data in the payload */ - if (struct_size(cmd, in_buf, cmd->in_length) + 4 > buf_len) + if (size_add(struct_size(cmd, in_buf, cmd->in_length), 4) > buf_len) return -EINVAL;
set_lsa =