From: Qu Wenruo <wqu@suse.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 8/9] btrfs-progs: Fix Wtype-limits warning
Date: Fri, 16 Nov 2018 15:54:25 +0800 [thread overview]
Message-ID: <20181116075426.4142-9-wqu@suse.com> (raw)
In-Reply-To: <20181116075426.4142-1-wqu@suse.com>
The only hit is the following code:
tlv_len = le16_to_cpu(tlv_hdr->tlv_len);
if (tlv_type == 0 || tlv_type > BTRFS_SEND_A_MAX
|| tlv_len > BTRFS_SEND_BUF_SIZE) {
error("invalid tlv in cmd tlv_type = %hu, tlv_len = %hu",
tlv_type, tlv_len);
@tlv_len is u16, while BTRFS_SEND_BUF_SIZE is 64K.
u16 MAX is 64K - 1, so the final check is always false.
Just remove it.
Signed-off-by: Qu Wenruo <wqu@suse.com>
---
send-stream.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/send-stream.c b/send-stream.c
index 3b8e39c9486a..25461e92c37b 100644
--- a/send-stream.c
+++ b/send-stream.c
@@ -157,8 +157,7 @@ static int read_cmd(struct btrfs_send_stream *sctx)
tlv_type = le16_to_cpu(tlv_hdr->tlv_type);
tlv_len = le16_to_cpu(tlv_hdr->tlv_len);
- if (tlv_type == 0 || tlv_type > BTRFS_SEND_A_MAX
- || tlv_len > BTRFS_SEND_BUF_SIZE) {
+ if (tlv_type == 0 || tlv_type > BTRFS_SEND_A_MAX) {
error("invalid tlv in cmd tlv_type = %hu, tlv_len = %hu",
tlv_type, tlv_len);
ret = -EINVAL;
--
2.19.1
next prev parent reply other threads:[~2018-11-16 7:54 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-16 7:54 [PATCH 0/9] btrfs-progs: Make W=1 clean (no "again") Qu Wenruo
2018-11-16 7:54 ` [PATCH 1/9] btrfs-progs: Makefile.extrawarn: Import cc-disable-warning Qu Wenruo
2018-12-04 11:04 ` David Sterba
2018-11-16 7:54 ` [PATCH 2/9] btrfs-progs: fix gcc8 default build warning caused by '-Wformat-truncation' Qu Wenruo
2018-12-04 11:10 ` David Sterba
2018-12-04 12:21 ` Qu Wenruo
2018-11-16 7:54 ` [PATCH 3/9] btrfs-progs: Makefile.extrawarn: Don't warn on sign compare Qu Wenruo
2018-11-16 8:00 ` [PATCH v1.1 " Qu Wenruo
2018-12-04 11:10 ` David Sterba
2018-11-16 7:54 ` [PATCH 4/9] btrfs-progs: Fix Wempty-body warning Qu Wenruo
2018-11-16 8:01 ` Nikolay Borisov
2018-11-16 7:54 ` [PATCH 5/9] btrfs-progs: Fix Wimplicit-fallthrough warning Qu Wenruo
2018-11-16 8:04 ` Nikolay Borisov
2018-11-16 8:10 ` Qu Wenruo
2018-11-16 7:54 ` [PATCH 6/9] btrfs-progs: Fix Wsuggest-attribute=format warning Qu Wenruo
2018-11-16 8:06 ` Nikolay Borisov
2018-11-16 7:54 ` [PATCH 7/9] btrfs-progs: Fix Wmaybe-uninitialized warning Qu Wenruo
2018-11-16 8:13 ` Nikolay Borisov
2018-11-16 8:16 ` Qu Wenruo
2018-11-16 8:22 ` [PATCH v1.1 " Qu Wenruo
2018-11-16 8:24 ` Nikolay Borisov
2018-12-04 12:17 ` [PATCH " David Sterba
2018-12-04 12:22 ` Adam Borowski
2018-12-04 12:42 ` Nikolay Borisov
2018-12-05 5:38 ` Qu Wenruo
2018-11-16 7:54 ` Qu Wenruo [this message]
2018-11-16 8:07 ` [PATCH 8/9] btrfs-progs: Fix Wtype-limits warning Nikolay Borisov
2018-11-16 7:54 ` [PATCH 9/9] btrfs-progs: Cleanup warning reported by -Wmissing-prototypes except free space tree Qu Wenruo
2018-11-16 8:04 ` [PATCH v1.1 9/9] btrfs-progs: Cleanup warning reported by -Wmissing-prototypes Qu Wenruo
2018-11-16 8:14 ` Nikolay Borisov
2018-12-04 12:22 ` David Sterba
2018-12-04 12:24 ` Qu Wenruo
2018-12-04 12:48 ` David Sterba
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