kernel-packages team mailing list archive
-
kernel-packages team
-
Mailing list archive
-
Message #159167
[Bug 1540731] Re: SocketMessenger::update_session_creds() fails to get client PID, causing "[ FAILED ] PromptSessionClientAPI.client_pid_is_associated_with_session"
Is this critical? I'm not familiar with prompt sessions, but on my
xenial machine I find Unity8 still works even when this bug is present.
Does it really affect us in production right now?
** Changed in: mir
Importance: Critical => High
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1540731
Title:
SocketMessenger::update_session_creds() fails to get client PID,
causing "[ FAILED ]
PromptSessionClientAPI.client_pid_is_associated_with_session"
Status in GLibC:
New
Status in Mir:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since updating to the 4.4.0-2 kernel recvmsg() fails SCM_CREDENTIALS
request with EOPNOTSUPP.
This manifests as a test failure in Mir:
[ RUN ] PromptSessionClientAPI.client_pid_is_associated_with_session
unknown file: Failure
Test case:
#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include <sys/socket.h>
#include <sys/stat.h>
TEST(IsItBroken, recvmsg)
{
using namespace testing;
enum { server, client, size };
int socket_fd[size];
int const opt = 1;
ASSERT_THAT(socketpair(AF_LOCAL, SOCK_STREAM, 0, socket_fd),
Eq(0));
auto const msg = "A random message";
send(socket_fd[client], msg, sizeof msg, MSG_DONTWAIT | MSG_NOSIGNAL);
ASSERT_THAT(setsockopt(socket_fd[server], SOL_SOCKET, SO_PASSCRED,
&opt, sizeof(opt)), Ne(-1));
union {
struct cmsghdr cmh;
char control[CMSG_SPACE(sizeof(ucred))];
} control_un;
control_un.cmh.cmsg_len = CMSG_LEN(sizeof(ucred));
control_un.cmh.cmsg_level = SOL_SOCKET;
control_un.cmh.cmsg_type = SCM_CREDENTIALS;
msghdr msgh;
msgh.msg_name = nullptr;
msgh.msg_namelen = 0;
msgh.msg_iov = nullptr;
msgh.msg_iovlen = 0;
msgh.msg_control = control_un.control;
msgh.msg_controllen = sizeof(control_un.control);
errno = 0;
EXPECT_THAT(recvmsg(socket_fd[server], &msgh, MSG_PEEK), Ne(-1))
<< "Error: " << strerror(errno);
for (auto socket : socket_fd) close(socket);
}
To manage notifications about this bug go to:
https://bugs.launchpad.net/glibc/+bug/1540731/+subscriptions