From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: drivers/net/ethernet/intel/i40e/i40e_main.c:4643:2: warning: Value stored to 'pf_q' is never read [clang-analyzer-deadcode.DeadStores]
Date: Mon, 10 Jan 2022 12:44:36 +0800 [thread overview]
Message-ID: <202201101200.Zy2802DX-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 19471 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
CC: Tony Nguyen <anthony.l.nguyen@intel.com>
CC: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: df0cc57e057f18e44dac8e6c18aba47ab53202f9
commit: 65662a8dcdd01342b71ee44234bcfd0162e195af i40e: Fix logic of disabling queues
date: 6 months ago
:::::: branch date: 5 hours ago
:::::: commit date: 6 months ago
config: x86_64-randconfig-c007-20220101 (https://download.01.org/0day-ci/archive/20220110/202201101200.Zy2802DX-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c054402170cd8466683a20385befc0523aba3359)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=65662a8dcdd01342b71ee44234bcfd0162e195af
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 65662a8dcdd01342b71ee44234bcfd0162e195af
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
net/nfc/nci/hci.c:620:6: note: Assuming 'conn_info' is non-null
if (!conn_info)
^~~~~~~~~~
net/nfc/nci/hci.c:620:2: note: Taking false branch
if (!conn_info)
^
net/nfc/nci/hci.c:633:6: note: Assuming 'r' is not equal to NCI_STATUS_OK
if (r == NCI_STATUS_OK) {
^~~~~~~~~~~~~~~~~~
net/nfc/nci/hci.c:633:2: note: Taking false branch
if (r == NCI_STATUS_OK) {
^
net/nfc/nci/hci.c:643:2: note: Returning without writing to '*'
return r;
^
net/nfc/nci/hci.c:743:6: note: Returning from 'nci_hci_get_param'
r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/nfc/nci/hci.c:745:6: note: Assuming 'r' is >= 0
if (r < 0)
^~~~~
net/nfc/nci/hci.c:745:2: note: Taking false branch
if (r < 0)
^
net/nfc/nci/hci.c:748:6: note: Access to field 'len' results in a dereference of an undefined pointer value (loaded from variable 'skb')
if (skb->len &&
^~~
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
7 warnings generated.
Suppressed 7 warnings (7 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
7 warnings generated.
Suppressed 7 warnings (7 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
sound/soc/codecs/cs35l33.c:1161:3: warning: Value stored to 'pdata' is never read [clang-analyzer-deadcode.DeadStores]
pdata = &cs35l33->pdata;
^ ~~~~~~~~~~~~~~~
sound/soc/codecs/cs35l33.c:1161:3: note: Value stored to 'pdata' is never read
pdata = &cs35l33->pdata;
^ ~~~~~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
sound/soc/codecs/cs42l42.c:581:8: warning: Excessive padding in 'struct cs42l42_pll_params' (4 padding bytes, where 0 is optimal).
Optimal fields order:
sclk,
pll_div_frac,
mclk_int,
mclk_div,
mclk_src_sel,
sclk_prediv,
pll_div_int,
pll_mode,
pll_divout,
pll_cal_ratio,
n,
consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct cs42l42_pll_params {
~~~~~~~^~~~~~~~~~~~~~~~~~~~
sound/soc/codecs/cs42l42.c:581:8: note: Excessive padding in 'struct cs42l42_pll_params' (4 padding bytes, where 0 is optimal). Optimal fields order: sclk, pll_div_frac, mclk_int, mclk_div, mclk_src_sel, sclk_prediv, pll_div_int, pll_mode, pll_divout, pll_cal_ratio, n, consider reordering the fields or adding explicit padding members
struct cs42l42_pll_params {
~~~~~~~^~~~~~~~~~~~~~~~~~~~
sound/soc/codecs/cs42l42.c:1404:28: warning: Value stored to 'component' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct snd_soc_component *component = cs42l42->component;
^~~~~~~~~ ~~~~~~~~~~~~~~~~~~
sound/soc/codecs/cs42l42.c:1404:28: note: Value stored to 'component' during its initialization is never read
struct snd_soc_component *component = cs42l42->component;
^~~~~~~~~ ~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
26 warnings generated.
>> drivers/net/ethernet/intel/i40e/i40e_main.c:4643:2: warning: Value stored to 'pf_q' is never read [clang-analyzer-deadcode.DeadStores]
pf_q = vsi->base_queue;
^ ~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:4643:2: note: Value stored to 'pf_q' is never read
pf_q = vsi->base_queue;
^ ~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:7949:3: warning: Value stored to 'need_reset' is never read [clang-analyzer-deadcode.DeadStores]
need_reset = false;
^ ~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:7949:3: note: Value stored to 'need_reset' is never read
need_reset = false;
^ ~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:9179:6: warning: Value stored to 'queue' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
u32 queue = le32_to_cpu(data->prtdcb_rupto);
^~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:9179:6: note: Value stored to 'queue' during its initialization is never read
u32 queue = le32_to_cpu(data->prtdcb_rupto);
^~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:9828:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = i40e_vc_process_vf_msg(pf,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:9828:4: note: Value stored to 'ret' is never read
ret = i40e_vc_process_vf_msg(pf,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:10707:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = i40e_setup_misc_vector(pf);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:10707:3: note: Value stored to 'ret' is never read
ret = i40e_setup_misc_vector(pf);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:14131:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = i40e_vsi_config_rss(vsi);
^ ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_main.c:14131:3: note: Value stored to 'ret' is never read
ret = i40e_vsi_config_rss(vsi);
^ ~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 20 warnings (20 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:2716:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = i40e_led_get_phy(hw, &temp_status,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/i40e/i40e_ethtool.c:2716:4: note: Value stored to 'ret' is never read
ret = i40e_led_get_phy(hw, &temp_status,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 14 warnings (14 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
19 warnings generated.
drivers/net/ethernet/qlogic/qed/qed_debug.c:1019:3: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(dump_buf, str);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:1019:3: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(dump_buf, str);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2428:4: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(buf + strlen(buf), name);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2428:4: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(buf + strlen(buf), name);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2430:4: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(buf, name);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2430:4: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(buf, name);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2460:3: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(buf + strlen(buf), mem_group);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2460:3: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(buf + strlen(buf), mem_group);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2462:3: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(buf, mem_group);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:2462:3: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(buf, mem_group);
^~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:4087:2: warning: Value stored to 'byte_buf' is never read [clang-analyzer-deadcode.DeadStores]
byte_buf += sizeof(signature);
^ ~~~~~~~~~~~~~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:4087:2: note: Value stored to 'byte_buf' is never read
byte_buf += sizeof(signature);
^ ~~~~~~~~~~~~~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:5527:8: warning: Excessive padding in 'struct igu_fifo_addr_data' (8 padding bytes, where 0 is optimal).
Optimal fields order:
desc,
vf_desc,
type,
start_addr,
end_addr,
consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct igu_fifo_addr_data {
~~~~~~~^~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:5527:8: note: Excessive padding in 'struct igu_fifo_addr_data' (8 padding bytes, where 0 is optimal). Optimal fields order: desc, vf_desc, type, start_addr, end_addr, consider reordering the fields or adding explicit padding members
struct igu_fifo_addr_data {
~~~~~~~^~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:8012:3: warning: Value stored to 'offset' is never read [clang-analyzer-deadcode.DeadStores]
offset += (feature_size + REGDUMP_HEADER_SIZE);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/qlogic/qed/qed_debug.c:8012:3: note: Value stored to 'offset' is never read
vim +/pf_q +4643 drivers/net/ethernet/intel/i40e/i40e_main.c
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4616
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4617 /**
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4618 * i40e_vsi_stop_rings - Stop a VSI's rings
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4619 * @vsi: the VSI being configured
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4620 **/
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4621 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4622 {
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4623 struct i40e_pf *pf = vsi->back;
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4624 int pf_q, err, q_end;
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4625
3480756f2cb93c Jacob Keller 2017-04-13 4626 /* When port TX is suspended, don't wait */
0da36b9774cc24 Jacob Keller 2017-04-19 4627 if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
3480756f2cb93c Jacob Keller 2017-04-13 4628 return i40e_vsi_stop_rings_no_wait(vsi);
3480756f2cb93c Jacob Keller 2017-04-13 4629
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4630 q_end = vsi->base_queue + vsi->num_queue_pairs;
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4631 for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4632 i40e_pre_tx_queue_cfg(&pf->hw, (u32)pf_q, false);
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4633
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4634 for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) {
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4635 err = i40e_control_wait_rx_q(pf, pf_q, false);
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4636 if (err)
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4637 dev_info(&pf->pdev->dev,
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4638 "VSI seid %d Rx ring %d dissable timeout\n",
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4639 vsi->seid, pf_q);
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4640 }
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4641
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4642 msleep(I40E_DISABLE_TX_GAP_MSEC);
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 @4643 pf_q = vsi->base_queue;
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4644 for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4645 wr32(&pf->hw, I40E_QTX_ENA(pf_q), 0);
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4646
65662a8dcdd013 Arkadiusz Kubalewski 2021-04-29 4647 i40e_vsi_wait_queues_disabled(vsi);
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4648 }
3aa7b74dbeedfb Filip Sadowski 2016-10-11 4649
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
next reply other threads:[~2022-01-10 4:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 4:44 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-05-27 4:31 drivers/net/ethernet/intel/i40e/i40e_main.c:4643:2: warning: Value stored to 'pf_q' is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
2022-05-30 3:39 ` kernel test robot
2022-01-03 18:08 kernel test robot
2022-01-07 3:05 ` kernel test robot
2022-01-07 3:05 ` kernel test robot
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