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To: linux-tip-commits@vger.kernel.org
Subject: [tip: objtool/urgent] iov_iter: Mark copy_iovec_from_user() noclone
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>,
"Borislav Petkov (AMD)" <bp@alien8.de>, x86@kernel.org,
linux-kernel@vger.kernel.org
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[tip:,objtool/urgent] iov_iter: Mark copy_iovec_from_user() noclone
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Commit Message
tip-bot2 for Thomas Gleixner
July 10, 2023, 8:13 a.m. UTC
The following commit has been merged into the objtool/urgent branch of tip:
Commit-ID: 719a937b7003933de1298ffa4b881dd6a234e244
Gitweb: https://git.kernel.org/tip/719a937b7003933de1298ffa4b881dd6a234e244
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Fri, 16 Jun 2023 14:43:55 +02:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Mon, 10 Jul 2023 09:52:28 +02:00
iov_iter: Mark copy_iovec_from_user() noclone
Extend commit 50f9a76ef127 ("iov_iter: Mark
copy_compat_iovec_from_user() noinline") to also cover
copy_iovec_from_user(). Different compiler versions cause the same
problem on different functions.
lib/iov_iter.o: warning: objtool: .altinstr_replacement+0x1f: redundant UACCESS disable
lib/iov_iter.o: warning: objtool: iovec_from_user+0x84: call to copy_iovec_from_user.part.0() with UACCESS enabled
lib/iov_iter.o: warning: objtool: __import_iovec+0x143: call to copy_iovec_from_user.part.0() with UACCESS enabled
Fixes: 50f9a76ef127 ("iov_iter: Mark copy_compat_iovec_from_user() noinline")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lkml.kernel.org/r/20230616124354.GD4253@hirez.programming.kicks-ass.net
---
lib/iov_iter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index b667b1e..e4dc809 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1349,7 +1349,7 @@ uaccess_end: return ret; } -static int copy_iovec_from_user(struct iovec *iov, +static __noclone int copy_iovec_from_user(struct iovec *iov, const struct iovec __user *uiov, unsigned long nr_segs) { int ret = -EFAULT;