[Bug 1017] [dpdk-22.07*] kernel/linux/kni meson build failed with gcc 11.2.0 on Ub22.04/64

[bugzilla@dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1017

            Bug ID: 1017
           Summary: [dpdk-22.07*] kernel/linux/kni meson build failed with
                    gcc 11.2.0 on Ub22.04/64
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: dev@dpdk.org
          Reporter: daxuex.gao@intel.com
  Target Milestone: ---

[DPDK Version]
dpdk latest code dpdk-next-* and dpdk branch  

[OS version]
Ubuntu22.04 LTS/(5.17.5-051705-generic/5.15.0-25-generic)
GCC 11.2.0

[Test Setup]
This error is to fix https://bugs.dpdk.org/show_bug.cgi?id=1009

# wget
https://patchwork.dpdk.org/project/dpdk/patch/20220510150635.61975-1-heinrich.schuchardt@canonical.com/mbox/
-O /tmp/a.patch
# git apply /tmp/a.patch
#  meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all
--default-library=static gcc-linux-app
# ninja -C gcc-linux-app

[log]
[warning log]

ninja: Entering directory `gcc-linux-app'
[3631/3631] Generating kernel/linux/kni/rte_kni with a custom command
make: Entering directory '/usr/src/linux-headers-5.17.5-051705-generic'
  CC [M]  /tmp/dpdk/gcc-linux-app/kernel/linux/kni/kni_misc.o
  CC [M]  /tmp/dpdk/gcc-linux-app/kernel/linux/kni/kni_net.o
/tmp/dpdk/kernel/linux/kni/kni_net.c: In function ‘kni_net_set_mac’:
/tmp/dpdk/kernel/linux/kni/kni_net.c:782:22: warning: passing argument 1 of
‘memcpy’ discards ‘const’ qualifier from pointer target type
[-Wdiscarded-qualifiers]
  782 |         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
      |                ~~~~~^~~~~~~~~
In file included from ./include/linux/string.h:253,
                 from ./include/linux/bitmap.h:11,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/paravirt.h:17,
                 from ./arch/x86/include/asm/irqflags.h:63,
                 from ./include/linux/irqflags.h:16,
                 from ./include/linux/rcupdate.h:26,
                 from ./include/linux/rculist.h:11,
                 from ./include/linux/pid.h:5,
                 from ./include/linux/sched.h:14,
                 from ./include/linux/ratelimit.h:6,
                 from ./include/linux/dev_printk.h:16,
                 from ./include/linux/device.h:15,
                 from /tmp/dpdk/kernel/linux/kni/kni_net.c:11:
./include/linux/fortify-string.h:212:37: note: expected ‘void *’ but argument
is of type ‘const unsigned char *’
  212 | __FORTIFY_INLINE void *memcpy(void *p, const void *q, __kernel_size_t
size)
      |                               ~~~~~~^
/tmp/dpdk/kernel/linux/kni/kni_misc.c: In function ‘kni_ioctl_create’:
/tmp/dpdk/kernel/linux/kni/kni_misc.c:406:31: warning: passing argument 1 of
‘memcpy’ discards ‘const’ qualifier from pointer target type
[-Wdiscarded-qualifiers]
  406 |                 memcpy(net_dev->dev_addr, dev_info.mac_addr, ETH_ALEN);
      |                        ~~~~~~^~~~~~~~~
In file included from ./include/linux/string.h:253,
                 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:22,
                 from ./arch/x86/include/asm/timex.h:5,
                 from ./include/linux/timex.h:65,
                 from ./include/linux/time32.h:13,
                 from ./include/linux/time.h:60,
                 from ./include/linux/stat.h:19,
                 from ./include/linux/module.h:13,
                 from /tmp/dpdk/kernel/linux/kni/kni_misc.c:7:
./include/linux/fortify-string.h:212:37: note: expected ‘void *’ but argument
is of type ‘const unsigned char *’
  212 | __FORTIFY_INLINE void *memcpy(void *p, const void *q, __kernel_size_t
size)
      |                               ~~~~~~^
/tmp/dpdk/kernel/linux/kni/kni_misc.c:409:40: warning: passing argument 1 of
‘eth_random_addr’ discards ‘const’ qualifier from pointer target type
[-Wdiscarded-qualifiers]
  409 |                 eth_random_addr(net_dev->dev_addr);
      |                                 ~~~~~~^~~~~~~~~
In file included from /tmp/dpdk/kernel/linux/kni/kni_misc.c:10:
./include/linux/etherdevice.h:230:40: note: expected ‘u8 *’ {aka ‘unsigned char
*’} but argument is of type ‘const unsigned char *’
  230 | static inline void eth_random_addr(u8 *addr)
      |                                    ~~~^~~
  LD [M]  /tmp/dpdk/gcc-linux-app/kernel/linux/kni/rte_kni.o
  MODPOST /tmp/dpdk/gcc-linux-app/kernel/linux/kni/Module.symvers
  CC [M]  /tmp/dpdk/gcc-linux-app/kernel/linux/kni/rte_kni.mod.o
  LD [M]  /tmp/dpdk/gcc-linux-app/kernel/linux/kni/rte_kni.ko
  BTF [M] /tmp/dpdk/gcc-linux-app/kernel/linux/kni/rte_kni.ko
Skipping BTF generation for /tmp/dpdk/gcc-linux-app/kernel/linux/kni/rte_kni.ko
due to unavailability of vmlinux
make: Leaving directory '/usr/src/linux-headers-5.17.5-051705-generic'

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