[broonie-ci:arm64-gcs-store-gcscre0 6/6] arch/arm64/kernel/signal.c:753:22: error: no member named 'gcs_el0_mode' in 'struct thread_struct'; did you mean 'gcs_el0_locked'?

[broonie-ci:arm64-gcs-store-gcscre0 6/6] arch/arm64/kernel/signal.c:753:22: error: no member named 'gcs_el0_mode' in 'struct thread_struct'; did you mean 'gcs_el0_locked'?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git arm64-gcs-store-gcscre0
head:   7f99cf9ccec2ef02e83b4cef2449ee2a931448cd
commit: 7f99cf9ccec2ef02e83b4cef2449ee2a931448cd [6/6] arm64/gcs: Store GCSCRE0_EL1 values instead of userspace mode
config: arm64-randconfig-2001-20261015 (https://download.01.org/0day-ci/archive/20261015/202610150747.IICDPmuf-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261015/202610150747.IICDPmuf-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/202610150747.IICDPmuf-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/arm64/kernel/signal.c:753:22: error: no member named 'gcs_el0_mode' in 'struct thread_struct'; did you mean 'gcs_el0_locked'?
     753 |         if (current->thread.gcs_el0_mode != enabled)
         |                             ^~~~~~~~~~~~
         |                             gcs_el0_locked
   arch/arm64/include/asm/processor.h:200:16: note: 'gcs_el0_locked' declared here
     200 |         unsigned int            gcs_el0_locked;
         |                                 ^
   1 error generated.


vim +753 arch/arm64/kernel/signal.c

16f47bb9ac8afe0 Mark Brown 2024-10-01  735  
16f47bb9ac8afe0 Mark Brown 2024-10-01  736  static int restore_gcs_context(struct user_ctxs *user)
16f47bb9ac8afe0 Mark Brown 2024-10-01  737  {
16f47bb9ac8afe0 Mark Brown 2024-10-01  738  	u64 gcspr, enabled;
16f47bb9ac8afe0 Mark Brown 2024-10-01  739  	int err = 0;
16f47bb9ac8afe0 Mark Brown 2024-10-01  740  
16f47bb9ac8afe0 Mark Brown 2024-10-01  741  	if (user->gcs_size != sizeof(*user->gcs))
16f47bb9ac8afe0 Mark Brown 2024-10-01  742  		return -EINVAL;
16f47bb9ac8afe0 Mark Brown 2024-10-01  743  
16f47bb9ac8afe0 Mark Brown 2024-10-01  744  	__get_user_error(gcspr, &user->gcs->gcspr, err);
16f47bb9ac8afe0 Mark Brown 2024-10-01  745  	__get_user_error(enabled, &user->gcs->features_enabled, err);
16f47bb9ac8afe0 Mark Brown 2024-10-01  746  	if (err)
16f47bb9ac8afe0 Mark Brown 2024-10-01  747  		return err;
16f47bb9ac8afe0 Mark Brown 2024-10-01  748  
eab95b122151dce Mark Brown 2026-10-14  749  	/*
eab95b122151dce Mark Brown 2026-10-14  750  	 * Don't allow any mode changes, the signal handler should use
eab95b122151dce Mark Brown 2026-10-14  751  	 * pcrtl() to disable if it wants to do that.
eab95b122151dce Mark Brown 2026-10-14  752  	 */
eab95b122151dce Mark Brown 2026-10-14 @753  	if (current->thread.gcs_el0_mode != enabled)
16f47bb9ac8afe0 Mark Brown 2024-10-01  754  		return -EINVAL;
16f47bb9ac8afe0 Mark Brown 2024-10-01  755  
16f47bb9ac8afe0 Mark Brown 2024-10-01  756  	/*
16f47bb9ac8afe0 Mark Brown 2024-10-01  757  	 * We let userspace set GCSPR_EL0 to anything here, we will
16f47bb9ac8afe0 Mark Brown 2024-10-01  758  	 * validate later in gcs_restore_signal().
16f47bb9ac8afe0 Mark Brown 2024-10-01  759  	 */
16f47bb9ac8afe0 Mark Brown 2024-10-01  760  	write_sysreg_s(gcspr, SYS_GCSPR_EL0);
16f47bb9ac8afe0 Mark Brown 2024-10-01  761  
16f47bb9ac8afe0 Mark Brown 2024-10-01  762  	return 0;
16f47bb9ac8afe0 Mark Brown 2024-10-01  763  }
16f47bb9ac8afe0 Mark Brown 2024-10-01  764  

:::::: The code at line 753 was first introduced by commit
:::::: eab95b122151dce193998db2f05cab3a4b79ceed arm64/gcs: Don't allow any GCS mode changes in signal return

:::::: TO: Mark Brown <broonie@kernel.org>
:::::: CC: Mark Brown <broonie@kernel.org>

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https://github.com/intel/lkp-tests/wiki