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arm64: uaccess: Use unsafe wrappers for ASM GOTO 

Clang propagates a provided label, which is outside of a cleanup scope to
ASM GOTO despite the fact that __raw_get_mem() has a local label for that
purpose:

  "error: cannot jump from this asm goto statement to one of its possible targets"

Using the unsafe wrapper with the extra local label indirection cures that.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner 2025-10-31 10:37:09 +01:00 committed by Ingo Molnar
parent 43cc54d8db
commit 2db48d8bf8
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/include/asm/uaccess.h
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@ -422,9 +422,9 @@ static __must_check __always_inline bool user_access_begin(const void __user *pt
}
#define user_access_begin(a,b) user_access_begin(a,b)
#define user_access_end() uaccess_ttbr0_disable()
#define unsafe_put_user(x, ptr, label) \
#define arch_unsafe_put_user(x, ptr, label) \
__raw_put_mem("sttr", x, uaccess_mask_ptr(ptr), label, U)
#define unsafe_get_user(x, ptr, label) \
#define arch_unsafe_get_user(x, ptr, label) \
__raw_get_mem("ldtr", x, uaccess_mask_ptr(ptr), label, U)
/*