net/ipv4/udp_tunnel_nic.c:51: warning: Excess struct member 'entries' description in 'udp_tunnel_nic'

From: kernel test robot
Date: Sun Dec 17 2023 - 15:48:00 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 0e389834672c723435a44818ed2cabc4dad24429
commit: ef35bed6fad6eda8de0277eda77803c748f306d1 udp_tunnel: Use flex array to simplify code
date: 3 months ago
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231218/202312180458.MTvBk05H-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312180458.MTvBk05H-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

arch/x86/kernel/cpu/resctrl/rdtgroup.c:914: warning: Function parameter or member 'v' not described in 'rdt_bit_usage_show'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1143: warning: Function parameter or member 'type' not described in '__rdtgroup_cbm_overlaps'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1223: warning: Function parameter or member 'rdtgrp' not described in 'rdtgroup_mode_test_exclusive'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1260: warning: Function parameter or member 'of' not described in 'rdtgroup_mode_write'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1260: warning: Function parameter or member 'buf' not described in 'rdtgroup_mode_write'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1260: warning: Function parameter or member 'nbytes' not described in 'rdtgroup_mode_write'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1260: warning: Function parameter or member 'off' not described in 'rdtgroup_mode_write'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1369: warning: Function parameter or member 'of' not described in 'rdtgroup_size_show'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1369: warning: Function parameter or member 's' not described in 'rdtgroup_size_show'
arch/x86/kernel/cpu/resctrl/rdtgroup.c:1369: warning: Function parameter or member 'v' not described in 'rdtgroup_size_show'
arch/x86/kernel/cpu/resctrl/monitor.c:34: warning: Cannot understand * @rmid_free_lru A least recently used list of free RMIDs
on line 34 - I thought it was a doc line
arch/x86/kernel/cpu/resctrl/monitor.c:41: warning: Cannot understand * @rmid_limbo_count count of currently unused but (potentially)
on line 41 - I thought it was a doc line
arch/x86/kernel/cpu/resctrl/monitor.c:50: warning: Cannot understand * @rmid_entry - The entry in the limbo and free lists.
on line 50 - I thought it was a doc line
kernel/relay.c: In function 'relay_create_buf_file':
kernel/relay.c:357:42: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
357 | snprintf(tmpname, NAME_MAX, "%s%d", chan->base_filename, cpu);
| ^
kernel/relay.c:357:9: note: 'snprintf' output between 2 and 266 bytes into a destination of size 255
357 | snprintf(tmpname, NAME_MAX, "%s%d", chan->base_filename, cpu);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/cpu/sgx/main.c:740: warning: Function parameter or member 'low' not described in 'sgx_calc_section_metric'
arch/x86/kernel/cpu/sgx/main.c:740: warning: Function parameter or member 'high' not described in 'sgx_calc_section_metric'
arch/x86/kernel/cpu/sgx/main.c:740: warning: expecting prototype for A section metric is concatenated in a way that @low bits 12(). Prototype was for sgx_calc_section_metric() instead
drivers/base/power/runtime.c:362: warning: Excess function parameter 'dev' description in '__rpm_callback'
drivers/base/module.c: In function 'module_add_driver':
drivers/base/module.c:36:13: warning: variable 'no_warn' set but not used [-Wunused-but-set-variable]
36 | int no_warn;
| ^~~~~~~
kernel/latencytop.c:178: warning: Function parameter or member 'tsk' not described in '__account_scheduler_latency'
kernel/latencytop.c:178: warning: Function parameter or member 'usecs' not described in '__account_scheduler_latency'
kernel/latencytop.c:178: warning: Function parameter or member 'inter' not described in '__account_scheduler_latency'
fs/proc/proc_net.c:161: warning: Function parameter or member 'state_size' not described in 'proc_create_net_data_write'
arch/x86/kernel/apic/apic.c:2168: warning: Function parameter or member 'spurious_interrupt' not described in 'DEFINE_IDTENTRY_IRQ'
arch/x86/kernel/apic/apic.c:2168: warning: expecting prototype for spurious_interrupt(). Prototype was for DEFINE_IDTENTRY_IRQ() instead
kernel/trace/ftrace.c:1287: warning: Function parameter or member 'ops' not described in 'ftrace_free_filter'
kernel/trace/ftrace.c:5487: warning: Function parameter or member 'addr' not described in 'unregister_ftrace_direct'
kernel/trace/ftrace.c:5487: warning: Function parameter or member 'free_filters' not described in 'unregister_ftrace_direct'
kernel/trace/ftrace.c:5638: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter_ip'
kernel/trace/ftrace.c:5638: warning: Function parameter or member 'ip' not described in 'ftrace_set_filter_ip'
kernel/trace/ftrace.c:5638: warning: Function parameter or member 'remove' not described in 'ftrace_set_filter_ip'
kernel/trace/ftrace.c:5638: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter_ip'
kernel/trace/ftrace.c:5661: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter_ips'
kernel/trace/ftrace.c:5661: warning: Function parameter or member 'ips' not described in 'ftrace_set_filter_ips'
kernel/trace/ftrace.c:5661: warning: Function parameter or member 'cnt' not described in 'ftrace_set_filter_ips'
kernel/trace/ftrace.c:5661: warning: Function parameter or member 'remove' not described in 'ftrace_set_filter_ips'
kernel/trace/ftrace.c:5661: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter_ips'
kernel/trace/ftrace.c:5675: warning: Function parameter or member 'ops' not described in 'ftrace_ops_set_global_filter'
kernel/trace/ftrace.c:5707: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter'
kernel/trace/ftrace.c:5707: warning: Function parameter or member 'buf' not described in 'ftrace_set_filter'
kernel/trace/ftrace.c:5707: warning: Function parameter or member 'len' not described in 'ftrace_set_filter'
kernel/trace/ftrace.c:5707: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter'
kernel/trace/ftrace.c:5730: warning: Function parameter or member 'ops' not described in 'ftrace_set_notrace'
kernel/trace/ftrace.c:5730: warning: Function parameter or member 'buf' not described in 'ftrace_set_notrace'
kernel/trace/ftrace.c:5730: warning: Function parameter or member 'len' not described in 'ftrace_set_notrace'
kernel/trace/ftrace.c:5730: warning: Function parameter or member 'reset' not described in 'ftrace_set_notrace'
kernel/trace/ftrace.c:5745: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_filter'
kernel/trace/ftrace.c:5745: warning: Function parameter or member 'len' not described in 'ftrace_set_global_filter'
kernel/trace/ftrace.c:5745: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_filter'
kernel/trace/ftrace.c:5761: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_notrace'
kernel/trace/ftrace.c:5761: warning: Function parameter or member 'len' not described in 'ftrace_set_global_notrace'
kernel/trace/ftrace.c:5761: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_notrace'
In file included from include/linux/string.h:254,
from include/linux/bitmap.h:11,
from include/linux/cpumask.h:12,
from arch/x86/include/asm/cpumask.h:5,
from arch/x86/include/asm/msr.h:11,
from arch/x86/include/asm/processor.h:23,
from arch/x86/include/asm/cpufeature.h:5,
from arch/x86/include/asm/thread_info.h:53,
from include/linux/thread_info.h:60,
from arch/x86/include/asm/preempt.h:9,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/mmzone.h:8,
from include/linux/memremap.h:5,
from drivers/dax/bus.c:3:
In function 'strncpy',
inlined from 'do_id_store' at drivers/dax/bus.c:106:5:
include/linux/fortify-string.h:68:33: warning: '__builtin_strncpy' specified bound 30 equals destination size [-Wstringop-truncation]
68 | #define __underlying_strncpy __builtin_strncpy
| ^
include/linux/fortify-string.h:151:16: note: in expansion of macro '__underlying_strncpy'
151 | return __underlying_strncpy(p, q, size);
| ^~~~~~~~~~~~~~~~~~~~
kernel/trace/pid_list.c:458: warning: Function parameter or member 'pid_list' not described in 'trace_pid_list_free'
drivers/dma-buf/dma-heap.c:44: warning: Function parameter or member 'priv' not described in 'dma_heap'
drivers/dma-buf/dma-heap.c:44: warning: Function parameter or member 'heap_devt' not described in 'dma_heap'
drivers/dma-buf/dma-heap.c:44: warning: Function parameter or member 'list' not described in 'dma_heap'
drivers/dma-buf/dma-heap.c:44: warning: Function parameter or member 'heap_cdev' not described in 'dma_heap'
kernel/context_tracking.c:467: warning: Function parameter or member 'state' not described in '__ct_user_enter'
kernel/context_tracking.c:607: warning: Function parameter or member 'state' not described in '__ct_user_exit'
kernel/trace/fgraph.c:334: warning: Function parameter or member 'task' not described in 'ftrace_graph_ret_addr'
kernel/trace/fgraph.c:334: warning: Function parameter or member 'idx' not described in 'ftrace_graph_ret_addr'
kernel/trace/fgraph.c:334: warning: Function parameter or member 'ret' not described in 'ftrace_graph_ret_addr'
kernel/trace/fgraph.c:334: warning: Function parameter or member 'retp' not described in 'ftrace_graph_ret_addr'
kernel/trace/trace_events_synth.c:1165: warning: Excess function parameter 'args' description in '__synth_event_gen_cmd_start'
kernel/trace/trace_events_synth.c:1714: warning: Excess function parameter 'args' description in 'synth_event_trace'
>> net/ipv4/udp_tunnel_nic.c:51: warning: Excess struct member 'entries' description in 'udp_tunnel_nic'
kernel/bpf/btf.c: In function 'btf_seq_show':
kernel/bpf/btf.c:7094:29: warning: function 'btf_seq_show' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
7094 | seq_vprintf((struct seq_file *)show->target, fmt, args);
| ^~~~~~~~
kernel/bpf/btf.c: In function 'btf_snprintf_show':
kernel/bpf/btf.c:7131:9: warning: function 'btf_snprintf_show' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
7131 | len = vsnprintf(show->target, ssnprintf->len_left, fmt, args);
| ^~~
kernel/trace/trace_kprobe.c:985: warning: Excess function parameter 'args' description in '__kprobe_event_gen_cmd_start'
kernel/trace/trace_kprobe.c:1053: warning: Excess function parameter 'args' description in '__kprobe_event_add_fields'
drivers/firewire/init_ohci1394_dma.c:178: warning: Function parameter or member 'ohci' not described in 'init_ohci1394_wait_for_busresets'
drivers/firewire/init_ohci1394_dma.c:196: warning: Function parameter or member 'ohci' not described in 'init_ohci1394_enable_physical_dma'
drivers/firewire/init_ohci1394_dma.c:207: warning: Function parameter or member 'ohci' not described in 'init_ohci1394_reset_and_init_dma'
drivers/firewire/init_ohci1394_dma.c:236: warning: Function parameter or member 'num' not described in 'init_ohci1394_controller'
drivers/firewire/init_ohci1394_dma.c:236: warning: Function parameter or member 'slot' not described in 'init_ohci1394_controller'
drivers/firewire/init_ohci1394_dma.c:236: warning: Function parameter or member 'func' not described in 'init_ohci1394_controller'
drivers/firewire/init_ohci1394_dma.c:289: warning: Function parameter or member 'opt' not described in 'setup_ohci1394_dma'
In file included from include/linux/kernel.h:30,
from arch/x86/include/asm/percpu.h:27,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/wait.h:9,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from include/linux/highmem.h:5,
from include/linux/bvec.h:10,
from include/linux/blk_types.h:10,
from include/linux/blkdev.h:9,
from drivers/scsi/scsi_devinfo.c:3:
drivers/scsi/scsi_devinfo.c: In function 'scsi_dev_info_list_add_str':
include/linux/kern_levels.h:5:25: warning: '%s' directive argument is null [-Wformat-overflow=]
5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
| ^~~~~~
include/linux/printk.h:427:25: note: in definition of macro 'printk_index_wrap'
427 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~
drivers/scsi/scsi_devinfo.c:554:25: note: in expansion of macro 'printk'
554 | printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
| ^~~~~~
include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
11 | #define KERN_ERR KERN_SOH "3" /* error conditions */
| ^~~~~~~~
drivers/scsi/scsi_devinfo.c:554:32: note: in expansion of macro 'KERN_ERR'
554 | printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
| ^~~~~~~~
drivers/usb/core/usb.c: In function 'usb_alloc_dev':
drivers/usb/core/usb.c:706:37: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 15 [-Wformat-truncation=]
706 | "%s.%d", parent->devpath, port1);
| ^~
drivers/usb/core/usb.c:706:33: note: using the range [-2147483648, 2147483647] for directive argument
706 | "%s.%d", parent->devpath, port1);
| ^~~~~~~
drivers/usb/core/usb.c:705:25: note: 'snprintf' output between 3 and 28 bytes into a destination of size 16
705 | snprintf(dev->devpath, sizeof dev->devpath,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
706 | "%s.%d", parent->devpath, port1);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/core/hcd.c: In function 'rh_string':
drivers/usb/core/hcd.c:443:48: warning: '%s' directive output may be truncated writing up to 64 bytes into a region of size between 35 and 99 [-Wformat-truncation=]
443 | snprintf (buf, sizeof buf, "%s %s %s", init_utsname()->sysname,
| ^~
444 | init_utsname()->release, hcd->driver->description);
| ~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/core/hcd.c:443:17: note: 'snprintf' output 3 or more bytes (assuming 131) into a destination of size 100
443 | snprintf (buf, sizeof buf, "%s %s %s", init_utsname()->sysname,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
444 | init_utsname()->release, hcd->driver->description);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/host/xhci.c:1318: warning: Function parameter or member 'desc' not described in 'xhci_get_endpoint_index'
drivers/input/keyboard/atkbd.c: In function 'atkbd_set_device_attrs':
drivers/input/keyboard/atkbd.c:1153:21: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
1153 | "%s/input0", atkbd->ps2dev.serio->phys);
| ^~~~~~~
drivers/input/keyboard/atkbd.c:1152:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
1152 | snprintf(atkbd->phys, sizeof(atkbd->phys),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1153 | "%s/input0", atkbd->ps2dev.serio->phys);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/input/mouse/psmouse-base.c: In function 'psmouse_connect':
drivers/input/mouse/psmouse-base.c:1603:59: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
1603 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
| ^~~~~~~
drivers/input/mouse/psmouse-base.c:1603:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
1603 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/net/usb/asix.h:28,
from drivers/net/usb/ax88172a.c:15:
drivers/net/usb/ax88172a.c: In function 'ax88172a_reset':
include/linux/phy.h:300:20: warning: '%s' directive output may be truncated writing up to 60 bytes into a region of size 20 [-Wformat-truncation=]
300 | #define PHY_ID_FMT "%s:%02x"
| ^~~~~~~~~
drivers/net/usb/ax88172a.c:309:38: note: in expansion of macro 'PHY_ID_FMT'
309 | snprintf(priv->phy_name, 20, PHY_ID_FMT,
| ^~~~~~~~~~
include/linux/phy.h:300:21: note: format string is defined here
300 | #define PHY_ID_FMT "%s:%02x"
| ^~
include/linux/phy.h:300:20: note: directive argument in the range [0, 65535]
300 | #define PHY_ID_FMT "%s:%02x"

vim +51 net/ipv4/udp_tunnel_nic.c

cc4e3835eff474 Jakub Kicinski 2020-07-09 27
cc4e3835eff474 Jakub Kicinski 2020-07-09 28 /**
cc4e3835eff474 Jakub Kicinski 2020-07-09 29 * struct udp_tunnel_nic - UDP tunnel port offload state
cc4e3835eff474 Jakub Kicinski 2020-07-09 30 * @work: async work for talking to hardware from process context
cc4e3835eff474 Jakub Kicinski 2020-07-09 31 * @dev: netdev pointer
cc4e3835eff474 Jakub Kicinski 2020-07-09 32 * @need_sync: at least one port start changed
cc4e3835eff474 Jakub Kicinski 2020-07-09 33 * @need_replay: space was freed, we need a replay of all ports
cc4e3835eff474 Jakub Kicinski 2020-07-09 34 * @work_pending: @work is currently scheduled
cc4e3835eff474 Jakub Kicinski 2020-07-09 35 * @n_tables: number of tables under @entries
cc4e3835eff474 Jakub Kicinski 2020-07-09 36 * @missed: bitmap of tables which overflown
cc4e3835eff474 Jakub Kicinski 2020-07-09 37 * @entries: table of tables of ports currently offloaded
cc4e3835eff474 Jakub Kicinski 2020-07-09 38 */
cc4e3835eff474 Jakub Kicinski 2020-07-09 39 struct udp_tunnel_nic {
cc4e3835eff474 Jakub Kicinski 2020-07-09 40 struct work_struct work;
cc4e3835eff474 Jakub Kicinski 2020-07-09 41
cc4e3835eff474 Jakub Kicinski 2020-07-09 42 struct net_device *dev;
cc4e3835eff474 Jakub Kicinski 2020-07-09 43
cc4e3835eff474 Jakub Kicinski 2020-07-09 44 u8 need_sync:1;
cc4e3835eff474 Jakub Kicinski 2020-07-09 45 u8 need_replay:1;
cc4e3835eff474 Jakub Kicinski 2020-07-09 46 u8 work_pending:1;
cc4e3835eff474 Jakub Kicinski 2020-07-09 47
cc4e3835eff474 Jakub Kicinski 2020-07-09 48 unsigned int n_tables;
cc4e3835eff474 Jakub Kicinski 2020-07-09 49 unsigned long missed;
ef35bed6fad6ed Christophe JAILLET 2023-09-24 50 struct udp_tunnel_nic_table_entry *entries[] __counted_by(n_tables);
cc4e3835eff474 Jakub Kicinski 2020-07-09 @51 };
cc4e3835eff474 Jakub Kicinski 2020-07-09 52

:::::: The code at line 51 was first introduced by commit
:::::: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 udp_tunnel: add central NIC RX port offload infrastructure

:::::: TO: Jakub Kicinski <kuba@xxxxxxxxxx>
:::::: CC: David S. Miller <davem@xxxxxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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