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[PULL 09/11] tools/virtiofsd/buffer.c: check whether buf is NULL in fuse
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[PULL 09/11] tools/virtiofsd/buffer.c: check whether buf is NULL in fuse_bufvec_advance func |
Date: |
Thu, 12 Nov 2020 18:37:56 +0000 |
From: Haotian Li <lihaotian9@huawei.com>
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>
---
tools/virtiofsd/buffer.c | 4 ++++
1 file changed, 4 insertions(+)
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) {
--
2.28.0
- [PULL 00/11] migration queue, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 01/11] migration/ram: Fix hexadecimal format string specifier, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 02/11] ACPI: Avoid infinite recursion when dump-vmstate, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 03/11] migration/multifd: fix hangup with TLS-Multifd due to blocking handshake, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 04/11] migration: fix uninitialized variable warning in migrate_send_rp_req_pages(), Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 05/11] migration/dirtyrate: simplify includes in dirtyrate.c, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 06/11] multifd/tls: fix memoryleak of the QIOChannelSocket object when cancelling migration, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 08/11] virtiofsd: Announce submounts even without statx(), Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 07/11] migration: handle CANCELLING state in migration_completion(), Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 09/11] tools/virtiofsd/buffer.c: check whether buf is NULL in fuse_bufvec_advance func,
Dr. David Alan Gilbert (git) <=
- [PULL 10/11] virtiofsd: check whether lo_map_reserve returns NULL in, main func, Dr. David Alan Gilbert (git), 2020/11/12
- [PULL 11/11] virtiofsd: check whether strdup lo.source return NULL in main func, Dr. David Alan Gilbert (git), 2020/11/12
- Re: [PULL 00/11] migration queue, Peter Maydell, 2020/11/13