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objtool: Add check_kcov_mode() to the uaccess safelist
check_kcov_mode() is called by write_comp_data() and __sanitizer_cov_trace_pc(), which are already on the uaccess safe list. It's notrace and doesn't call out to anything else, so add it to the list too. This fixes the following warnings: kernel/kcov.o: warning: objtool: __sanitizer_cov_trace_pc()+0x15: call to check_kcov_mode() with UACCESS enabled kernel/kcov.o: warning: objtool: write_comp_data()+0x1b: call to check_kcov_mode() with UACCESS enabled Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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@ -507,6 +507,7 @@ static const char *uaccess_safe_builtin[] = {
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"__asan_report_store16_noabort",
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/* KCOV */
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"write_comp_data",
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"check_kcov_mode",
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"__sanitizer_cov_trace_pc",
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"__sanitizer_cov_trace_const_cmp1",
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"__sanitizer_cov_trace_const_cmp2",
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