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| author |   Colin Ian King <colin.king@canonical.com> | 2020-04-02 15:48:51 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-04-02 18:00:01 -0700 |
| commit | 468c2a100208461c1821315f6fd81b32b9d12561 (patch) | |
| tree | b1a3f816ed2c0c4b798f31c00699b0322924b54f /drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c | |
| parent | pegasus: Remove pegasus' own workqueue (diff) | |
| download | wireguard-linux-468c2a100208461c1821315f6fd81b32b9d12561.tar.xz wireguard-linux-468c2a100208461c1821315f6fd81b32b9d12561.zip | |
mlxsw: spectrum_trap: fix unintention integer overflow on left shift
Shifting the integer value 1 is evaluated using 32-bit
arithmetic and then used in an expression that expects a 64-bit
value, so there is potentially an integer overflow. Fix this
by using the BIT_ULL macro to perform the shift and avoid the
overflow.
Addresses-Coverity: ("Unintentional integer overflow")
Fixes: 13f2e64b94ea ("mlxsw: spectrum_trap: Add devlink-trap policer support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c index 9096ffd89e50..fbf714d027d8 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c @@ -643,7 +643,7 @@ static int mlxsw_sp_trap_policer_bs(u64 burst, u8 *p_burst_size, { int bs = fls64(burst) - 1; - if (burst != (1 << bs)) { + if (burst != (BIT_ULL(bs))) { NL_SET_ERR_MSG_MOD(extack, "Policer burst size is not power of two"); return -EINVAL; } |