linux-kernel - mainline build failure on arm hosts

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Message-ID: <Y9e1PoEJgq3TPNtP@debian>
Date:   Mon, 30 Jan 2023 12:17:02 +0000
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Horia Geantă <horia.geanta@....com>,
        Pankaj Gupta <pankaj.gupta@....com>,
        Gaurav Jain <gaurav.jain@....com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org
Subject: mainline build failure on arm hosts

Hi All,

The mainline kernel branch had been failing native build on arm hosts
for some weeks with the error:

drivers/crypto/caam/desc_constr.h: In function 'append_data.constprop':
./include/linux/fortify-string.h:57:29: error: argument 2 null where non-null expected [-Werror=nonnull]
   57 | #define __underlying_memcpy __builtin_memcpy
      |                             ^
./include/linux/fortify-string.h:578:2: note: in expansion of macro '__underlying_memcpy'
  578 |  __underlying_##op(p, q, __fortify_size);   \
      |  ^~~~~~~~~~~~~
./include/linux/fortify-string.h:623:26: note: in expansion of macro '__fortify_memcpy_chk'
  623 | #define memcpy(p, q, s)  __fortify_memcpy_chk(p, q, s,   \
      |                          ^~~~~~~~~~~~~~~~~~~~
drivers/crypto/caam/desc_constr.h:167:3: note: in expansion of macro 'memcpy'
  167 |   memcpy(offset, data, len);
      |   ^~~~~~
./include/linux/fortify-string.h:57:29: note: in a call to built-in function '__builtin_memcpy'
   57 | #define __underlying_memcpy __builtin_memcpy
      |                             ^
./include/linux/fortify-string.h:578:2: note: in expansion of macro '__underlying_memcpy'
  578 |  __underlying_##op(p, q, __fortify_size);   \
      |  ^~~~~~~~~~~~~
./include/linux/fortify-string.h:623:26: note: in expansion of macro '__fortify_memcpy_chk'
  623 | #define memcpy(p, q, s)  __fortify_memcpy_chk(p, q, s,   \
      |                          ^~~~~~~~~~~~~~~~~~~~
drivers/crypto/caam/desc_constr.h:167:3: note: in expansion of macro 'memcpy'
  167 |   memcpy(offset, data, len);
      |   ^~~~~~
cc1: all warnings being treated as errors


The commit 4f289826fee0 ("crypto: caam - Avoid GCC memset bug warning")
in linux-next fixes the build.


-- 
Regards
Sudip