It looks like an infinite loop, if queue is unsigned. julia
---------- Forwarded message ---------- Date: Thu, 6 Apr 2017 11:49:01 +0800 From: kbuild test robot <fengguang...@intel.com> To: kbu...@01.org Cc: Julia Lawall <julia.law...@lip6.fr> Subject: Re: [PATCH 2/4 v2 net-next] net: stmmac: adding multiple buffers for RX [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Joao-Pinto/net-stmmac-break-some-functions-into-RX-and-TX-scopes/20170406-081523 :::::: branch date: 4 hours ago :::::: commit date: 4 hours ago drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2852:15-20: WARNING: Unsigned expression compared with zero: entry < 0 >> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1190:8-13: WARNING: >> Unsigned expression compared with zero: queue >= 0 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout b403b5806dca0f85904ddc6cf2241286da86ed9b vim +1190 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b6ad2502 Joao Pinto 2017-04-05 1174 if (priv->extend_desc) b403b580 Joao Pinto 2017-04-05 1175 priv->hw->mode->init(rx_q->dma_erx, b403b580 Joao Pinto 2017-04-05 1176 rx_q->dma_rx_phy, e3ad57c9 Giuseppe Cavallaro 2016-02-29 1177 DMA_RX_SIZE, 1); b6ad2502 Joao Pinto 2017-04-05 1178 else b403b580 Joao Pinto 2017-04-05 1179 priv->hw->mode->init(rx_q->dma_rx, b403b580 Joao Pinto 2017-04-05 1180 rx_q->dma_rx_phy, e3ad57c9 Giuseppe Cavallaro 2016-02-29 1181 DMA_RX_SIZE, 0); b6ad2502 Joao Pinto 2017-04-05 1182 } b403b580 Joao Pinto 2017-04-05 1183 } b403b580 Joao Pinto 2017-04-05 1184 b403b580 Joao Pinto 2017-04-05 1185 buf_sz = bfsize; b6ad2502 Joao Pinto 2017-04-05 1186 b6ad2502 Joao Pinto 2017-04-05 1187 return 0; b403b580 Joao Pinto 2017-04-05 1188 b6ad2502 Joao Pinto 2017-04-05 1189 err_init_rx_buffers: b403b580 Joao Pinto 2017-04-05 @1190 while (queue >= 0) { b6ad2502 Joao Pinto 2017-04-05 1191 while (--i >= 0) b403b580 Joao Pinto 2017-04-05 1192 stmmac_free_rx_buffer(priv, queue, i); b403b580 Joao Pinto 2017-04-05 1193 b403b580 Joao Pinto 2017-04-05 1194 i = DMA_RX_SIZE; b403b580 Joao Pinto 2017-04-05 1195 queue--; b403b580 Joao Pinto 2017-04-05 1196 } b403b580 Joao Pinto 2017-04-05 1197 b6ad2502 Joao Pinto 2017-04-05 1198 return ret; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
