Messages in this thread Patch in this message | | | Date | Sat, 11 Feb 2023 10:30:55 -0000 | From | "tip-bot2 for Peter Zijlstra" <> | Subject | [tip: sched/core] objtool: mem*() are not uaccess safe |
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The following commit has been merged into the sched/core branch of tip:
Commit-ID: 443ed4c302fff6a26af980300463343a7adc9ee8 Gitweb: https://git.kernel.org/tip/443ed4c302fff6a26af980300463343a7adc9ee8 Author: Peter Zijlstra <peterz@infradead.org> AuthorDate: Mon, 30 Jan 2023 15:21:02 +01:00 Committer: Peter Zijlstra <peterz@infradead.org> CommitterDate: Sat, 11 Feb 2023 11:18:08 +01:00
objtool: mem*() are not uaccess safe
For mysterious raisins I listed the new __asan_mem*() functions as being uaccess safe, this is giving objtool fails on KASAN builds because these functions call out to the actual __mem*() functions which are not marked uaccess safe.
Removing it doesn't make the robots unhappy.
Fixes: 69d4c0d32186 ("entry, kasan, x86: Disallow overriding mem*() functions") Reported-by: "Paul E. McKenney" <paulmck@kernel.org> Bisected-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20230126182302.GA687063@paulmck-ThinkPad-P17-Gen-1 --- tools/objtool/check.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 10b5bb4..b118f58 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -1083,9 +1083,6 @@ static const char *uaccess_safe_builtin[] = { "__asan_store16_noabort", "__kasan_check_read", "__kasan_check_write", - "__asan_memset", - "__asan_memmove", - "__asan_memcpy", /* KASAN in-line */ "__asan_report_load_n_noabort", "__asan_report_load1_noabort",
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