From: Dan Carpenter <dan.carpenter@oracle.com>
To: kbuild@lists.01.org, Tariq Toukan <tariqt@nvidia.com>
Cc: lkp@intel.com, kbuild-all@lists.01.org,
linux-kernel@vger.kernel.org, Saeed Mahameed <saeedm@nvidia.com>
Subject: drivers/net/ethernet/mellanox/mlx5/core/en_main.c:339 mlx5e_get_mpwqe_offset() warn: should '(wqe_ix * ((((((((((1))) << (((18 - 12 > 0) ?18 - 12:0))) + 1)) + (((8)) - 1)) & ~(((8)) - 1))))) << 12' be a 64 bit type?
Date: Fri, 6 Aug 2021 10:38:45 +0300 [thread overview]
Message-ID: <202108061118.ZiCEBH6d-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 902e7f373fff2476b53824264c12e4e76c7ec02a
commit: d5dd03b26ba49c4ffe67ee1937add82293c19794 net/mlx5e: RX, Mind the MPWQE gaps when calculating offsets
config: i386-randconfig-m021-20210804 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
smatch warnings:
drivers/net/ethernet/mellanox/mlx5/core/en_main.c:339 mlx5e_get_mpwqe_offset() warn: should '(wqe_ix * ((((((((((1))) << (((18 - 12 > 0) ?18 - 12:0))) + 1)) + (((8)) - 1)) & ~(((8)) - 1))))) << 12' be a 64 bit type?
vim +339 drivers/net/ethernet/mellanox/mlx5/core/en_main.c
d5dd03b26ba49c Tariq Toukan 2021-01-12 337 static u64 mlx5e_get_mpwqe_offset(u16 wqe_ix)
b8a98a4cf3221d Tariq Toukan 2017-12-20 338 {
d5dd03b26ba49c Tariq Toukan 2021-01-12 @339 return MLX5E_REQUIRED_MTTS(wqe_ix) << PAGE_SHIFT;
This function returns u64 but only the lower 32 bits can be set.
b8a98a4cf3221d Tariq Toukan 2017-12-20 340 }
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
reply other threads:[~2021-08-06 7:39 UTC|newest]
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