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Message-ID: <20200602195741.4faaa348@canb.auug.org.au>
Date: Tue, 2 Jun 2020 19:57:41 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linux Next Mailing List <linux-next@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Christoph Hellwig <hch@....de>
Subject: linux-next: build failure after merge of the akpm tree
Hi all,
After merging the akpm tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:
ERROR: modpost: ".probe_user_write" [arch/powerpc/kvm/kvm-hv.ko] undefined!
Caused by patch
"maccess: unexport probe_kernel_write and probe_user_write"
"These two functions are not used by any modular code." turns out to
not be true :-(
I have added this patch:
From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Tue, 2 Jun 2020 19:54:05 +1000
Subject: [PATCH] turns out that probe_user_write is used in modular code
Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
mm/maccess.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/maccess.c b/mm/maccess.c
index ddfda8e6f4a5..88845eda5047 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -246,6 +246,7 @@ long probe_user_write(void __user *dst, const void *src, size_t size)
return -EFAULT;
return 0;
}
+EXPORT_SYMBOL_GPL(probe_user_write);
/**
* strncpy_from_user_nofault: - Copy a NUL terminated string from unsafe user
--
2.26.2
--
Cheers,
Stephen Rothwell
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