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Peter Anvin" , linux-perf-users@vger.kernel.org, "Mi, Dapeng" , Joey Pabalinas Subject: [PATCH RESEND] perf/x86/amd/uncore: use kcalloc() instead of multiplication Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="4qwazsycsrcemc6n" Content-Disposition: inline --4qwazsycsrcemc6n Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: [PATCH RESEND] perf/x86/amd/uncore: use kcalloc() instead of multiplication MIME-Version: 1.0 Content-Type: text/plain; protected-headers="v1"; charset="utf-8" Dynamic size calculations should not be performed in allocator function arguments due to overflow risk. Use kcalloc() instead of multiplication in the first argument of kzalloc(). Signed-off-by: Joey Pabalinas Reviewed-by: Dapeng Mi =20 --- arch/x86/events/amd/uncore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c index e8b6af199c738eb00b..d08e3054461f2ca07a 100644 --- a/arch/x86/events/amd/uncore.c +++ b/arch/x86/events/amd/uncore.c @@ -1036,11 +1036,11 @@ int amd_uncore_umc_ctx_init(struct amd_uncore *unco= re, unsigned int cpu) group_num_pmus[gid] =3D hweight32(info.split.aux_data); group_num_pmcs[gid] =3D info.split.num_pmcs; uncore->num_pmus +=3D group_num_pmus[gid]; } =20 - uncore->pmus =3D kzalloc(sizeof(*uncore->pmus) * uncore->num_pmus, + uncore->pmus =3D kcalloc(uncore->num_pmus, sizeof(*uncore->pmus), GFP_KERNEL); if (!uncore->pmus) { uncore->num_pmus =3D 0; goto done; } --=20 Cheers, Joey Pabalinas --4qwazsycsrcemc6n Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQJPBAABCAA5FiEEx6b1SGGPTKxTmPDYqoHu9CTxowIFAmjxW+EbFIAAAAAABAAO bWFudTIsMi41KzEuMTEsMiwyAAoJEKqB7vQk8aMCSTIP/jyBdY/bM6BYOPmLlxcY 7d679rsc10SVO9ia3Afd8buRveo0D9MnZyODRWgO1xcKO2d1MEc89G31P/e/LgL4 Cxze5uz8l4a2pWP5VCmRLFVnRoLP+50k5D8BkPwe62c5+XiAwmLCcpVVNTruuoFD 7TiWQh3QsqwlFAOYg1Fau4nAJw151IUByQjDim7yLUA3fixjvETspAh6ePRKsEMr m7/VBrJn7jnjgI0q4aNA5uvuYLSy+NTSkBjHShbo9y7a43nHgmP9CxxgPScYV7fV MOoXUxvdKbPyxq2zOoQ0mHI0wQ607byo+J68U2/ddPwPb+iX1acHi8gZ91xzntPp BArExh38u4NXO6ofTOLPSLAspI5NbmVFvb98AgnhvJuYvD/k/TDZ6/E3l6iMlXZa A9bMMx6B/MY/YlgrS/Aryo0KMsqbtfckfuDKbEEFvg6kG0ocZB1F51zRcI6HD61f iYcmypXjK9GU27F1OeGV/0h8PT41izq7p5V91LTWK1KRiFLP76YewOaXaVQbAyF9 kqHW6IzJGKtk8jpe+0MFTt7pq82HOFdkehXVBCGaloDXAfZ9UpjQ/czkP7qOlHOF cx2KrgbeM+ZiV+e3TIryaSvyVKVFvQFC1xEtruLKKgvavPq9dXxRdPUFPzFjfMJb YrFcIN9F1qYrCrfgqfNEmuYT =Xdus -----END PGP SIGNATURE----- --4qwazsycsrcemc6n--