Messages in this thread | | | Date | Mon, 2 May 2022 11:47:47 -0700 | From | Josh Poimboeuf <> | Subject | Re: [PATCH 2/3] x86/cpu: Elide KCSAN for cpu_has() and friends |
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On Mon, May 02, 2022 at 01:07:43PM +0200, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: enter_from_user_mode+0x24: call to __kcsan_check_access() leaves .noinstr.text section > vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x28: call to __kcsan_check_access() leaves .noinstr.text section > vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x24: call to __kcsan_check_access() leaves .noinstr.text section > vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x24: call to __kcsan_check_access() leaves .noinstr.text section > > Reported-by: kernel test robot <lkp@intel.com> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
An explanation about *why* this fixes it would help, as I have no idea from looking at the patch.
> --- > arch/x86/include/asm/cpufeature.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- a/arch/x86/include/asm/cpufeature.h > +++ b/arch/x86/include/asm/cpufeature.h > @@ -51,7 +51,7 @@ extern const char * const x86_power_flag > extern const char * const x86_bug_flags[NBUGINTS*32]; > > #define test_cpu_cap(c, bit) \ > - test_bit(bit, (unsigned long *)((c)->x86_capability)) > + arch_test_bit(bit, (unsigned long *)((c)->x86_capability)) > > /* > * There are 32 bits/features in each mask word. The high bits > >
-- Josh
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