sockets: ignore io.EOF from view.ReadAt

Reported-by: syzbot+5466463b7604c2902875@syzkaller.appspotmail.com
PiperOrigin-RevId: 337451896

1 files changed, 44 insertions, 0 deletions

diff --git a/test/syscalls/linux/socket_netlink_route.cc b/test/syscalls/linux/socket_netlink_route.cc
index b3fcf8e7c..241ddad74 100644
--- a/test/syscalls/linux/socket_netlink_route.cc
+++ b/test/syscalls/linux/socket_netlink_route.cc
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #include <arpa/inet.h>
+#include <fcntl.h>
 #include <ifaddrs.h>
 #include <linux/if.h>
 #include <linux/netlink.h>
@@ -335,6 +336,49 @@ TEST(NetlinkRouteTest, MsgHdrMsgTrunc) {
   EXPECT_EQ((msg.msg_flags & MSG_TRUNC), MSG_TRUNC);
 }
 
+TEST(NetlinkRouteTest, SpliceFromPipe) {
+  Link loopback_link = ASSERT_NO_ERRNO_AND_VALUE(LoopbackLink());
+  FileDescriptor fd =
+      ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE));
+
+  int fds[2];
+  ASSERT_THAT(pipe(fds), SyscallSucceeds());
+  FileDescriptor rfd(fds[0]);
+  FileDescriptor wfd(fds[1]);
+
+  struct request {
+    struct nlmsghdr hdr;
+    struct ifinfomsg ifm;
+  };
+
+  struct request req = {};
+  req.hdr.nlmsg_len = sizeof(req);
+  req.hdr.nlmsg_type = RTM_GETLINK;
+  req.hdr.nlmsg_flags = NLM_F_REQUEST;
+  req.hdr.nlmsg_seq = kSeq;
+  req.ifm.ifi_family = AF_UNSPEC;
+  req.ifm.ifi_index = loopback_link.index;
+
+  ASSERT_THAT(write(wfd.get(), &req, sizeof(req)),
+              SyscallSucceedsWithValue(sizeof(req)));
+
+  EXPECT_THAT(splice(rfd.get(), nullptr, fd.get(), nullptr, sizeof(req) + 1, 0),
+              SyscallSucceedsWithValue(sizeof(req)));
+  close(wfd.release());
+  EXPECT_THAT(splice(rfd.get(), nullptr, fd.get(), nullptr, sizeof(req) + 1, 0),
+              SyscallSucceedsWithValue(0));
+
+  bool found = false;
+  ASSERT_NO_ERRNO(NetlinkResponse(
+      fd,
+      [&](const struct nlmsghdr* hdr) {
+        CheckLinkMsg(hdr, loopback_link);
+        found = true;
+      },
+      false));
+  EXPECT_TRUE(found) << "Netlink response does not contain any links.";
+}
+
 TEST(NetlinkRouteTest, MsgTruncMsgHdrMsgTrunc) {
   FileDescriptor fd =
       ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE));