Hi WenChen, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 170b758d064664f953e8f6de41dd4a3ef122443a commit: 6d14be01fcb032c478cd4669b32526fda0393195 [2284/2284] urma: upload kernel patch for 20240318_happy_birthday config: arm64-randconfig-003-20241029 (https://download.01.org/0day-ci/archive/20241104/202411040331.VqatFZsL-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241104/202411040331.VqatFZsL-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202411040331.VqatFZsL-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/ub/urma/ubcore/ubcore_tpg.c: In function 'ubcore_find_remove_tpg':

...

drivers/ub/urma/ubcore/ubcore_tpg.c:113:42: warning: the comparison will always evaluate as 'false' for the address of 'head' will never be NULL [-Waddress] 113 | if (&dev->ht[UBCORE_HT_TPG].head == NULL) { | ^~ In file included from drivers/ub/urma/ubcore/ubcore_hash_table.h:24, from drivers/ub/urma/ubcore/ubcore_tpg.c:23: include/urma/ubcore_types.h:162:28: note: 'head' declared here 162 | struct hlist_head *head; | ^~~~ drivers/ub/urma/ubcore/ubcore_tpg.c: In function 'ubcore_find_remove_tp_node': drivers/ub/urma/ubcore/ubcore_tpg.c:149:44: warning: the comparison will always evaluate as 'false' for the address of 'head' will never be NULL [-Waddress] 149 | if (&dev->ht[UBCORE_HT_UB_TP].head == NULL) { | ^~ include/urma/ubcore_types.h:162:28: note: 'head' declared here 162 | struct hlist_head *head; | ^~~~ -- drivers/ub/urma/ubcore/ubcore_netlink.c:185:5: warning: no previous prototype for 'ubcore_genl_unicast' [-Wmissing-prototypes] 185 | int ubcore_genl_unicast(struct ubcore_nlmsg *req, uint32_t len) | ^~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netlink.c: In function 'ubcore_create_nl_session': drivers/ub/urma/ubcore/ubcore_netlink.c:87:15: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation] 87 | (void)strncpy(s->dev_name, dev->dev_name, strlen(dev->dev_name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netlink.c:87:15: note: length computed here 87 | (void)strncpy(s->dev_name, dev->dev_name, strlen(dev->dev_name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- drivers/ub/urma/ubcore/ubcore_msg.c:433:28: warning: no previous prototype for 'ubcore_asyn_send_fe2tpf_msg' [-Wmissing-prototypes] 433 | struct ubcore_msg_session *ubcore_asyn_send_fe2tpf_msg(struct ubcore_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'ubcore_migrate_req', inlined from 'ubcore_recv_req' at drivers/ub/urma/ubcore/ubcore_msg.c:282:16: drivers/ub/urma/ubcore/ubcore_msg.c:261:15: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation] 261 | (void)strncpy(mig_resp->dev_name, dev->dev_name, strlen(dev->dev_name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_msg.c:261:15: note: length computed here 261 | (void)strncpy(mig_resp->dev_name, dev->dev_name, strlen(dev->dev_name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- drivers/ub/urma/ubcore/ubcore_utp.c: In function 'ubcore_find_remove_utp': drivers/ub/urma/ubcore/ubcore_utp.c:139:42: warning: the comparison will always evaluate as 'false' for the address of 'head' will never be NULL [-Waddress] 139 | if (&dev->ht[UBCORE_HT_UTP].head == NULL) { | ^~ In file included from drivers/ub/urma/ubcore/ubcore_hash_table.h:24, from drivers/ub/urma/ubcore/ubcore_utp.c:23: include/urma/ubcore_types.h:162:28: note: 'head' declared here 162 | struct hlist_head *head; | ^~~~ -- drivers/ub/urma/ubcore/ubcore_ctp.c: In function 'ubcore_find_remove_ctp': drivers/ub/urma/ubcore/ubcore_ctp.c:114:42: warning: the comparison will always evaluate as 'false' for the address of 'head' will never be NULL [-Waddress] 114 | if (&dev->ht[UBCORE_HT_CTP].head == NULL) { | ^~ In file included from drivers/ub/urma/ubcore/ubcore_hash_table.h:24, from drivers/ub/urma/ubcore/ubcore_ctp.c:23: include/urma/ubcore_types.h:162:28: note: 'head' declared here 162 | struct hlist_head *head; | ^~~~ -- drivers/ub/urma/ubcore/ubcore_device.c:409:6: warning: no previous prototype for 'ubcore_destroy_upi_list' [-Wmissing-prototypes] 409 | void ubcore_destroy_upi_list(struct ubcore_device *dev) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c:504:23: warning: no previous prototype for 'ubcore_find_tpf_device_legacy' [-Wmissing-prototypes] 504 | struct ubcore_device *ubcore_find_tpf_device_legacy(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c:1637:5: warning: no previous prototype for 'ubcore_dispatch_event' [-Wmissing-prototypes] 1637 | int ubcore_dispatch_event(struct ubcore_event *event) | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/printk.h:7, from include/linux/kernel.h:17, from include/asm-generic/bug.h:20, from arch/arm64/include/asm/bug.h:26, from include/linux/bug.h:5, from include/linux/refcount.h:96, from include/net/net_namespace.h:9, from drivers/ub/urma/ubcore/ubcore_device.c:21: drivers/ub/urma/ubcore/ubcore_device.c: In function 'ubcore_add_ueid': include/linux/kern_levels.h:5:25: warning: too many arguments for format [-Wformat-extra-args] 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH' 11 | #define KERN_ERR KERN_SOH "3" /* error conditions */ | ^~~~~~~~ include/linux/printk.h:392:16: note: in expansion of macro 'KERN_ERR' 392 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~ drivers/ub/urma/ubcore/ubcore_log.h:46:16: note: in expansion of macro 'pr_err' 46 | ((void)pr_##l("%s|%s:[%d]|" format, UBCORE_LOG_TAG, __func__, __LINE__, ##args)) | ^~~ drivers/ub/urma/ubcore/ubcore_log.h:57:17: note: in expansion of macro 'ubcore_default_log' 57 | ubcore_default_log(err, __VA_ARGS__); \ | ^~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c:1857:17: note: in expansion of macro 'ubcore_log_err' 1857 | ubcore_log_err("failed to add ueid, ret:%d\n", | ^~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c: In function 'ubcore_delete_ueid': include/linux/kern_levels.h:5:25: warning: too many arguments for format [-Wformat-extra-args] 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH' 11 | #define KERN_ERR KERN_SOH "3" /* error conditions */ | ^~~~~~~~ include/linux/printk.h:392:16: note: in expansion of macro 'KERN_ERR' 392 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~ drivers/ub/urma/ubcore/ubcore_log.h:46:16: note: in expansion of macro 'pr_err' 46 | ((void)pr_##l("%s|%s:[%d]|" format, UBCORE_LOG_TAG, __func__, __LINE__, ##args)) | ^~~ drivers/ub/urma/ubcore/ubcore_log.h:57:17: note: in expansion of macro 'ubcore_default_log' 57 | ubcore_default_log(err, __VA_ARGS__); \ | ^~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c:1885:17: note: in expansion of macro 'ubcore_log_err' 1885 | ubcore_log_err("failed to add ueid, ret:%d\n", | ^~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c: At top level: drivers/ub/urma/ubcore/ubcore_device.c:2389:6: warning: no previous prototype for 'ubcore_net_exit' [-Wmissing-prototypes] 2389 | void ubcore_net_exit(struct net *net) | ^~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_device.c: In function 'ubcore_new_tpf_dev_msg': drivers/ub/urma/ubcore/ubcore_device.c:913:21: warning: 'strnlen' specified bound 64 exceeds source size 16 [-Wstringop-overread] 913 | if (strnlen(dev->netdev->name, UBCORE_MAX_DEV_NAME) >= UBCORE_MAX_DEV_NAME) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/ub/urma/ubcore/ubcore_device.c:32: include/linux/netdevice.h:1957:33: note: source object allocated here 1957 | char name[IFNAMSIZ]; | ^~~~ -- drivers/ub/urma/ubcore/ubcore_netdev.c:40:25: warning: no previous prototype for 'ubcore_lookup_sip_info_without_lock' [-Wmissing-prototypes] 40 | struct ubcore_sip_info *ubcore_lookup_sip_info_without_lock( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:74:5: warning: no previous prototype for 'ubcore_notify_uvs_del_sip' [-Wmissing-prototypes] 74 | int ubcore_notify_uvs_del_sip(struct ubcore_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:112:22: warning: no previous prototype for 'ubcore_new_sip_req_msg' [-Wmissing-prototypes] 112 | struct ubcore_nlmsg *ubcore_new_sip_req_msg(struct ubcore_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:144:5: warning: no previous prototype for 'ubcore_notify_uvs_add_sip' [-Wmissing-prototypes] 144 | int ubcore_notify_uvs_add_sip(struct ubcore_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:176:5: warning: no previous prototype for 'ubcore_check_port_state' [-Wmissing-prototypes] 176 | int ubcore_check_port_state(struct ubcore_device *dev, uint8_t port_idx) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:200:6: warning: no previous prototype for 'ubcore_find_port_netdev' [-Wmissing-prototypes] 200 | void ubcore_find_port_netdev(struct ubcore_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:291:5: warning: no previous prototype for 'ubcore_set_port_netdev' [-Wmissing-prototypes] 291 | int ubcore_set_port_netdev(struct ubcore_device *dev, struct net_device *ndev, | ^~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:377:5: warning: no previous prototype for 'ubcore_unset_port_netdev' [-Wmissing-prototypes] 377 | int ubcore_unset_port_netdev(struct ubcore_device *dev, struct net_device *ndev, | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:408:6: warning: no previous prototype for 'ubcore_put_port_netdev' [-Wmissing-prototypes] 408 | void ubcore_put_port_netdev(struct ubcore_device *dev) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:435:5: warning: no previous prototype for 'ubcore_sip_table_init' [-Wmissing-prototypes] 435 | int ubcore_sip_table_init(struct ubcore_sip_table *sip_table, uint32_t size) | ^~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:454:6: warning: no previous prototype for 'ubcore_sip_table_uninit' [-Wmissing-prototypes] 454 | void ubcore_sip_table_uninit(struct ubcore_sip_table *sip_table) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:465:5: warning: no previous prototype for 'ubcore_sip_idx_alloc' [-Wmissing-prototypes] 465 | int ubcore_sip_idx_alloc(struct ubcore_sip_table *sip_table) | ^~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:481:5: warning: no previous prototype for 'ubcore_sip_idx_free' [-Wmissing-prototypes] 481 | int ubcore_sip_idx_free(struct ubcore_sip_table *sip_table, uint32_t idx) | ^~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:494:5: warning: no previous prototype for 'ubcore_add_sip_entry' [-Wmissing-prototypes] 494 | int ubcore_add_sip_entry(struct ubcore_sip_table *sip_table, const struct ubcore_sip_info *sip, | ^~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:512:5: warning: no previous prototype for 'ubcore_del_sip_entry' [-Wmissing-prototypes] 512 | int ubcore_del_sip_entry(struct ubcore_sip_table *sip_table, uint32_t idx) | ^~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c:542:5: warning: no previous prototype for 'ubcore_lookup_sip_idx' [-Wmissing-prototypes] 542 | int ubcore_lookup_sip_idx(struct ubcore_sip_table *sip_table, struct ubcore_sip_info *sip, | ^~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c: In function 'ubcore_set_port_netdev': drivers/ub/urma/ubcore/ubcore_netdev.c:298:17: warning: 'strnlen' specified bound 64 exceeds source size 21 [-Wstringop-overread] 298 | strnlen(netdev_name(ndev), UBCORE_MAX_DEV_NAME) >= UBCORE_MAX_DEV_NAME) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ub/urma/ubcore/ubcore_netdev.c: In function 'ubcore_unset_port_netdev': drivers/ub/urma/ubcore/ubcore_netdev.c:384:17: warning: 'strnlen' specified bound 64 exceeds source size 21 [-Wstringop-overread] 384 | strnlen(netdev_name(ndev), UBCORE_MAX_DEV_NAME) >= UBCORE_MAX_DEV_NAME) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +113 drivers/ub/urma/ubcore/ubcore_tpg.c 107 108 struct ubcore_tpg *ubcore_find_remove_tpg(struct ubcore_device *dev, uint32_t tpgn) 109 { 110 struct ubcore_tpg *tpg; 111 112 spin_lock(&dev->ht[UBCORE_HT_TPG].lock);

113 if (&dev->ht[UBCORE_HT_TPG].head == NULL) { 114 spin_unlock(&dev->ht[UBCORE_HT_TPG].lock); 115 return NULL; 116 } 117 tpg = ubcore_hash_table_lookup_nolock(&dev->ht[UBCORE_HT_TPG], tpgn, &tpgn); 118 if (tpg == NULL) { 119 spin_unlock(&dev->ht[UBCORE_HT_TPG].lock); 120 return NULL; 121 } 122 if (atomic_read(&tpg->use_cnt) > 0) { 123 spin_unlock(&dev->ht[UBCORE_HT_TPG].lock); 124 ubcore_log_err("Failed to remove tpg"); 125 return NULL; 126 } 127 ubcore_hash_table_remove_nolock(&dev->ht[UBCORE_HT_TPG], &tpg->hnode); 128 spin_unlock(&dev->ht[UBCORE_HT_TPG].lock); 129 130 return tpg; 131 } 132

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