diff options
| author | Haotian Li <lihaotian9@huawei.com> | 2020-11-11 09:05:56 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-11-12 16:25:23 +0000 |
| commit | 7fa87944f82d75d21b7166570ac87d7874c151d5 (patch) | |
| tree | d033f83d918a9a0bffea2a1a11e3a43b9853c63a | |
| parent | f26688a911ed4bc122f597333c9d5b45175e683c (diff) | |
| download | qemu-7fa87944f82d75d21b7166570ac87d7874c151d5.zip | |
tools/virtiofsd/buffer.c: check whether buf is NULL in fuse_bufvec_advance func
In fuse_bufvec_advance func, calling fuse_bufvec_current func
may return NULL, so we should check whether buf is NULL before
using it.
Signed-off-by: Haotian Li <lihaotian9@huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Message-Id: <29fc87c2-b87c-4c34-40d4-75381f228849@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
| -rw-r--r-- | tools/virtiofsd/buffer.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/virtiofsd/buffer.c b/tools/virtiofsd/buffer.c index 27c1377f22..bdc608c221 100644 --- a/tools/virtiofsd/buffer.c +++ b/tools/virtiofsd/buffer.c @@ -246,6 +246,10 @@ static int fuse_bufvec_advance(struct fuse_bufvec *bufv, size_t len) { const struct fuse_buf *buf = fuse_bufvec_current(bufv); + if (!buf) { + return 0; + } + bufv->off += len; assert(bufv->off <= buf->size); if (bufv->off == buf->size) { |