fs: f2fs: initialize fsdata in pagecache_write()
[ Upstream commitb1b9896718
] When aops->write_begin() does not initialize fsdata, KMSAN may report an error passing the latter to aops->write_end(). Fix this by unconditionally initializing fsdata. Suggested-by: Eric Biggers <ebiggers@kernel.org> Fixes:95ae251fe8
("f2fs: add fs-verity support") Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -76,7 +76,7 @@ static int pagecache_write(struct inode *inode, const void *buf, size_t count,
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size_t n = min_t(size_t, count,
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size_t n = min_t(size_t, count,
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PAGE_SIZE - offset_in_page(pos));
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PAGE_SIZE - offset_in_page(pos));
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struct page *page;
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struct page *page;
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void *fsdata;
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void *fsdata = NULL;
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int res;
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int res;
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res = pagecache_write_begin(NULL, inode->i_mapping, pos, n, 0,
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res = pagecache_write_begin(NULL, inode->i_mapping, pos, n, 0,
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