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Message-ID: <202409261836.eGX8TVKA-lkp@intel.com>
Date: Thu, 26 Sep 2024 18:46:28 +0800
From: kernel test robot <lkp@...el.com>
To: Dipendra Khadka <kdipendra88@...il.com>, florian.fainelli@...adcom.com,
bcm-kernel-feedback-list@...adcom.com, davem@...emloft.net,
edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
maxime.chevallier@...tlin.com, horms@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Dipendra Khadka <kdipendra88@...il.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v4] net: systemport: Add error pointer checks in
bcm_sysport_map_queues() and bcm_sysport_unmap_queues()
Hi Dipendra,
kernel test robot noticed the following build errors:
[auto build test ERROR on net/main]
url: https://github.com/intel-lab-lkp/linux/commits/Dipendra-Khadka/net-systemport-Add-error-pointer-checks-in-bcm_sysport_map_queues-and-bcm_sysport_unmap_queues/20240925-233508
base: net/main
patch link: https://lore.kernel.org/r/20240925152927.4579-1-kdipendra88%40gmail.com
patch subject: [PATCH net v4] net: systemport: Add error pointer checks in bcm_sysport_map_queues() and bcm_sysport_unmap_queues()
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240926/202409261836.eGX8TVKA-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 7773243d9916f98ba0ffce0c3a960e4aa9f03e81)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240926/202409261836.eGX8TVKA-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409261836.eGX8TVKA-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/net/ethernet/broadcom/bcmsysport.c:11:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/net/ethernet/broadcom/bcmsysport.c:11:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/net/ethernet/broadcom/bcmsysport.c:11:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
In file included from drivers/net/ethernet/broadcom/bcmsysport.c:14:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:10:
In file included from include/linux/mm.h:2232:
include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
517 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
>> drivers/net/ethernet/broadcom/bcmsysport.c:2401:21: error: expected ';' after return statement
2401 | return PTR_ERR(dp));
| ^
| ;
7 warnings and 1 error generated.
vim +2401 drivers/net/ethernet/broadcom/bcmsysport.c
2389
2390 static int bcm_sysport_unmap_queues(struct net_device *dev,
2391 struct net_device *slave_dev)
2392 {
2393 struct bcm_sysport_priv *priv = netdev_priv(dev);
2394 struct bcm_sysport_tx_ring *ring;
2395 unsigned int num_tx_queues;
2396 unsigned int q, qp, port;
2397 struct dsa_port *dp;
2398
2399 dp = dsa_port_from_netdev(slave_dev);
2400 if (IS_ERR(dp))
> 2401 return PTR_ERR(dp));
2402
2403 port = dp->index;
2404
2405 num_tx_queues = slave_dev->real_num_tx_queues;
2406
2407 for (q = 0; q < dev->num_tx_queues; q++) {
2408 ring = &priv->tx_rings[q];
2409
2410 if (ring->switch_port != port)
2411 continue;
2412
2413 if (!ring->inspect)
2414 continue;
2415
2416 ring->inspect = false;
2417 qp = ring->switch_queue;
2418 priv->ring_map[qp + port * num_tx_queues] = NULL;
2419 }
2420
2421 return 0;
2422 }
2423
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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