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* [freescale-fslc:pr/502 8935/15836] include/linux/string.h:290:33: error: '__builtin_strncpy' output may be truncated copying 15 bytes from a string of length 15
@ 2021-11-29  0:44 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-11-29  0:44 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 7832 bytes --]

tree:   https://github.com/Freescale/linux-fslc pr/502
head:   f040ed8ce37b5dc2c7d94005a4788549dcb608d1
commit: 1db839bda044bf4568b6d9191a6a850ba89dbe67 [8935/15836] fsl_qbman: usdpaa: clear ioctl_dma_map string buffers
config: arm-allmodconfig (https://download.01.org/0day-ci/archive/20211129/202111290845.2Wk5eNwX-lkp(a)intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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://github.com/Freescale/linux-fslc/commit/1db839bda044bf4568b6d9191a6a850ba89dbe67
        git remote add freescale-fslc https://github.com/Freescale/linux-fslc
        git fetch --no-tags freescale-fslc pr/502
        git checkout 1db839bda044bf4568b6d9191a6a850ba89dbe67
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/fsl_usdpaa.h:17,
                    from drivers/staging/fsl_qbman/dpa_sys.h:66,
                    from drivers/staging/fsl_qbman/fsl_usdpaa.c:29:
   include/linux/fsl_qman.h:415:1: error: alignment 1 of 'struct qm_eqcr_entry' is less than 8 [-Werror=packed-not-aligned]
     415 | } __packed;
         | ^
   include/linux/fsl_qman.h:469:17: error: alignment 1 of 'struct <anonymous>' is less than 8 [-Werror=packed-not-aligned]
     469 |                 } __packed ern;
         |                 ^
   include/linux/fsl_qman.h:468:38: error: 'fd' offset 15 in 'struct <anonymous>' isn't aligned to 8 [-Werror=packed-not-aligned]
     468 |                         struct qm_fd fd;
         |                                      ^~
   include/linux/fsl_qman.h:486:17: error: alignment 1 of 'struct <anonymous>' is less than 8 [-Werror=packed-not-aligned]
     486 |                 } __packed dcern;
         |                 ^
   include/linux/fsl_qman.h:485:38: error: 'fd' offset 15 in 'struct <anonymous>' isn't aligned to 8 [-Werror=packed-not-aligned]
     485 |                         struct qm_fd fd;
         |                                      ^~
   include/linux/fsl_qman.h:1679:1: error: alignment 1 of 'struct qm_mcr_ceetm_cq_peek_pop_xsfdrread' is less than 8 [-Werror=packed-not-aligned]
    1679 | } __packed;
         | ^
   include/linux/fsl_qman.h:1677:22: error: 'fd' offset 14 in 'struct qm_mcr_ceetm_cq_peek_pop_xsfdrread' isn't aligned to 8 [-Werror=packed-not-aligned]
    1677 |         struct qm_fd fd;
         |                      ^~
   In file included from drivers/staging/fsl_qbman/fsl_usdpaa.c:32:
   drivers/staging/fsl_qbman/qman_low.h: In function 'qm_shutdown_fq':
   drivers/staging/fsl_qbman/qman_low.h:1291:29: error: variable 'dequeue_wq' set but not used [-Werror=unused-but-set-variable]
    1291 |                         u16 dequeue_wq = 0;
         |                             ^~~~~~~~~~
   drivers/staging/fsl_qbman/fsl_usdpaa.c: At top level:
   drivers/staging/fsl_qbman/fsl_usdpaa.c:406:6: error: no previous prototype for 'dbci_portal' [-Werror=missing-prototypes]
     406 | void dbci_portal(void *addr)
         |      ^~~~~~~~~~~
   In file included from include/linux/bitmap.h:9,
                    from include/linux/cpumask.h:12,
                    from include/linux/smp.h:13,
                    from include/linux/lockdep.h:14,
                    from include/linux/rcupdate.h:29,
                    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 include/linux/miscdevice.h:7,
                    from drivers/staging/fsl_qbman/fsl_usdpaa.c:13:
   In function 'strncpy',
       inlined from 'ioctl_dma_map' at drivers/staging/fsl_qbman/fsl_usdpaa.c:1161:3:
>> include/linux/string.h:290:33: error: '__builtin_strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Werror=stringop-truncation]
     290 | #define __underlying_strncpy    __builtin_strncpy
         |                                 ^
   include/linux/string.h:300:16: note: in expansion of macro '__underlying_strncpy'
     300 |         return __underlying_strncpy(p, q, size);
         |                ^~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/__builtin_strncpy +290 include/linux/string.h

47227d27e2fcb0 Daniel Axtens 2020-06-03  268  
47227d27e2fcb0 Daniel Axtens 2020-06-03  269  #ifdef CONFIG_KASAN
47227d27e2fcb0 Daniel Axtens 2020-06-03  270  extern void *__underlying_memchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr);
47227d27e2fcb0 Daniel Axtens 2020-06-03  271  extern int __underlying_memcmp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp);
47227d27e2fcb0 Daniel Axtens 2020-06-03  272  extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy);
47227d27e2fcb0 Daniel Axtens 2020-06-03  273  extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove);
47227d27e2fcb0 Daniel Axtens 2020-06-03  274  extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(memset);
47227d27e2fcb0 Daniel Axtens 2020-06-03  275  extern char *__underlying_strcat(char *p, const char *q) __RENAME(strcat);
47227d27e2fcb0 Daniel Axtens 2020-06-03  276  extern char *__underlying_strcpy(char *p, const char *q) __RENAME(strcpy);
47227d27e2fcb0 Daniel Axtens 2020-06-03  277  extern __kernel_size_t __underlying_strlen(const char *p) __RENAME(strlen);
47227d27e2fcb0 Daniel Axtens 2020-06-03  278  extern char *__underlying_strncat(char *p, const char *q, __kernel_size_t count) __RENAME(strncat);
47227d27e2fcb0 Daniel Axtens 2020-06-03  279  extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy);
47227d27e2fcb0 Daniel Axtens 2020-06-03  280  #else
47227d27e2fcb0 Daniel Axtens 2020-06-03  281  #define __underlying_memchr	__builtin_memchr
47227d27e2fcb0 Daniel Axtens 2020-06-03  282  #define __underlying_memcmp	__builtin_memcmp
47227d27e2fcb0 Daniel Axtens 2020-06-03  283  #define __underlying_memcpy	__builtin_memcpy
47227d27e2fcb0 Daniel Axtens 2020-06-03  284  #define __underlying_memmove	__builtin_memmove
47227d27e2fcb0 Daniel Axtens 2020-06-03  285  #define __underlying_memset	__builtin_memset
47227d27e2fcb0 Daniel Axtens 2020-06-03  286  #define __underlying_strcat	__builtin_strcat
47227d27e2fcb0 Daniel Axtens 2020-06-03  287  #define __underlying_strcpy	__builtin_strcpy
47227d27e2fcb0 Daniel Axtens 2020-06-03  288  #define __underlying_strlen	__builtin_strlen
47227d27e2fcb0 Daniel Axtens 2020-06-03  289  #define __underlying_strncat	__builtin_strncat
47227d27e2fcb0 Daniel Axtens 2020-06-03 @290  #define __underlying_strncpy	__builtin_strncpy
47227d27e2fcb0 Daniel Axtens 2020-06-03  291  #endif
47227d27e2fcb0 Daniel Axtens 2020-06-03  292  

:::::: The code at line 290 was first introduced by commit
:::::: 47227d27e2fcb01a9e8f5958d8997cf47a820afc string.h: fix incompatibility between FORTIFY_SOURCE and KASAN

:::::: TO: Daniel Axtens <dja@axtens.net>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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