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vfs: fix uninitialized flags in splice_to_pipe()
Flags (PIPE_BUF_FLAG_PACKET, PIPE_BUF_FLAG_GIFT) could remain on the unused part of the pipe ring buffer. Previously splice_to_pipe() left the flags value alone, which could result in incorrect behavior. Uninitialized flags appears to have been there from the introduction of the splice syscall. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Cc: <stable@vger.kernel.org> # 2.6.17+ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -204,6 +204,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
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buf->len = spd->partial[page_nr].len;
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buf->private = spd->partial[page_nr].private;
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buf->ops = spd->ops;
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buf->flags = 0;
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pipe->nrbufs++;
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page_nr++;
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