From: kernel test robot <lkp@intel.com>
To: Ross Philipson <ross.philipson@gmail.com>
Cc: <llvm@lists.linux.dev>, <oe-kbuild-all@lists.linux.dev>,
Jarkko Sakkinen <jarkko@kernel.org>,
"Daniel P. Smith" <dpsmith@apertussolutions.com>,
"Alec Brown" <alec.r.brown@oracle.com>
Subject: [linux-next:master 16504/16703] include/linux/tpm_command.h:515:2: warning: field within 'struct tpm_header' is less aligned than 'union tpm_header::(anonymous at include/linux/tpm_command.h:515:2)' and is usually due to 'struct tpm_header' being packed, which can lead to unaligned acc...
Date: Sun, 23 Aug 2026 19:45:21 +0800 [thread overview]
Message-ID: <202608231539.1dlIoONA-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 903c1cf6dff9964e71eda98a39e2e5d442050472
commit: 80d179c799e06db3a0ded6fdd71f292d9bef3fa5 [16504/16703] tpm: Move TPM common base definitions to the command header
config: arm-randconfig-002-20260823 (https://download.01.org/0day-ci/archive/20260823/202608231539.1dlIoONA-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 935bfc708590c60147a79c7df145bb6e68b1d388)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260823/202608231539.1dlIoONA-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608231539.1dlIoONA-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/char/tpm/tpm_i2c_atmel.c:23:
In file included from drivers/char/tpm/tpm.h:28:
In file included from include/linux/tpm.h:28:
>> include/linux/tpm_command.h:515:2: warning: field within 'struct tpm_header' is less aligned than 'union tpm_header::(anonymous at include/linux/tpm_command.h:515:2)' and is usually due to 'struct tpm_header' being packed, which can lead to unaligned accesses [-Wunaligned-access]
515 | union {
| ^
1 warning generated.
vim +515 include/linux/tpm_command.h
511
512 struct tpm_header {
513 __be16 tag;
514 __be32 length;
> 515 union {
516 __be32 ordinal;
517 __be32 return_code;
518 };
519 } __packed;
520
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-08-23 11:45 UTC|newest]
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