45 lines
1.5 KiB
Diff
45 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Max Kellermann <max.kellermann@ionos.com>
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Date: Mon, 21 Feb 2022 11:03:13 +0100
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Subject: [PATCH] lib/iov_iter: initialize "flags" in new pipe_buffer
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commit 9d2231c5d74e13b2a0546fee6737ee4446017903 upstream.
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The functions copy_page_to_iter_pipe() and push_pipe() can both
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allocate a new pipe_buffer, but the "flags" member initializer is
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missing.
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Fixes: 241699cd72a8 ("new iov_iter flavour: pipe-backed")
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To: Alexander Viro <viro@zeniv.linux.org.uk>
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To: linux-fsdevel@vger.kernel.org
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To: linux-kernel@vger.kernel.org
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Cc: stable@vger.kernel.org
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Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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---
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lib/iov_iter.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/lib/iov_iter.c b/lib/iov_iter.c
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index 9ffa7dc197be..fa5827e2e9a3 100644
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--- a/lib/iov_iter.c
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+++ b/lib/iov_iter.c
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@@ -449,6 +449,7 @@ static size_t copy_page_to_iter_pipe(struct page *page, size_t offset, size_t by
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return 0;
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buf->ops = &page_cache_pipe_buf_ops;
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+ buf->flags = 0;
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get_page(page);
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buf->page = page;
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buf->offset = offset;
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@@ -564,6 +565,7 @@ static size_t push_pipe(struct iov_iter *i, size_t size,
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break;
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buf->ops = &default_pipe_buf_ops;
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+ buf->flags = 0;
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buf->page = page;
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buf->offset = 0;
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buf->len = min_t(ssize_t, left, PAGE_SIZE);
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