diff options
| author | Xie XiuQi <xiexiuqi@huawei.com> | 2020-05-05 10:45:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-20 10:23:22 +0200 |
| commit | 87624503629e6a18c0268b37a045ebe3877a2738 (patch) | |
| tree | dd097d2318231b90b9a81006f951bb8d180f5662 /drivers/net/ethernet/intel | |
| parent | 38af7cd18c1d896ce77cbe91b0d27b4fbd3648f8 (diff) | |
ixgbe: fix signed-integer-overflow warning
[ Upstream commit 3b70683fc4d68f5d915d9dc7e5ba72c732c7315c ]
ubsan report this warning, fix it by adding a unsigned suffix.
UBSAN: signed-integer-overflow in
drivers/net/ethernet/intel/ixgbe/ixgbe_common.c:2246:26
65535 * 65537 cannot be represented in type 'int'
CPU: 21 PID: 7 Comm: kworker/u256:0 Not tainted 5.7.0-rc3-debug+ #39
Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 03/27/2020
Workqueue: ixgbe ixgbe_service_task [ixgbe]
Call trace:
dump_backtrace+0x0/0x3f0
show_stack+0x28/0x38
dump_stack+0x154/0x1e4
ubsan_epilogue+0x18/0x60
handle_overflow+0xf8/0x148
__ubsan_handle_mul_overflow+0x34/0x48
ixgbe_fc_enable_generic+0x4d0/0x590 [ixgbe]
ixgbe_service_task+0xc20/0x1f78 [ixgbe]
process_one_work+0x8f0/0xf18
worker_thread+0x430/0x6d0
kthread+0x218/0x238
ret_from_fork+0x10/0x18
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c index cd2afe92f1da..e10808b3d118 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c @@ -2185,7 +2185,7 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) } /* Configure pause time (2 TCs per register) */ - reg = hw->fc.pause_time * 0x00010001; + reg = hw->fc.pause_time * 0x00010001U; for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++) IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); |