Public bug reported:
Binary package hint: udev
On two headless servers "restart udev" just hangs. When the udev
package gets updated the only way to get aptitude to complete the
upgrade is to kill the 'restart udev' process from the outside.
The last thing 'strace restart udev' shows is:
ocket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC, 0) = 3
connect(3, {sa_family=AF_FILE, path=@"/com/ubuntu/upstart"}, 22) = 0
fcntl(3, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
geteuid() = 0
getsockname(3, {sa_family=AF_FILE, NULL}, [2]) = 0
poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3, revents=POLLOUT}])
write(3, "\0", 1) = 1
sendto(3, "AUTH EXTERNAL 30\r\n", 18, MSG_NOSIGNAL, NULL, 0) = 18
poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}])
read(3, "OK d71fcfbb5e2671f0f0575cf800000"..., 2048) = 37
poll([{fd=3, events=POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
sendto(3, "NEGOTIATE_UNIX_FD\r\n", 19, MSG_NOSIGNAL, NULL, 0) = 19
poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}])
read(3, "AGREE_UNIX_FD\r\n", 2048) = 15
poll([{fd=3, events=POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
sendto(3, "BEGIN\r\n", 7, MSG_NOSIGNAL, NULL, 0) = 7
poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
sendmsg(3, {msg_name(0)=NULL,
msg_iov(2)=[{"l\1\2\1\t\0\0\0\1\0\0\0_\0\0\0\1\1o\0\23\0\0\0/com/ubu"..., 112},
{"\4\0\0\0udev\0", 9}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 121
poll([{fd=3, events=POLLIN}], 1, 25000) = 1 ([{fd=3, revents=POLLIN}])
recvmsg(3, {msg_name(0)=NULL,
msg_iov(1)=[{"l\2\1\1\"\0\0\0\1\0\0\0\17\0\0\0\5\1u\0\1\0\0\0\10\1g\0\1o\0\0"...,
2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 66
recvmsg(3, 0x7fffee846a60, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily
unavailable)
sendmsg(3, {msg_name(0)=NULL,
msg_iov(2)=[{"l\1\2\1\10\0\0\0\2\0\0\0i\0\0\0\1\1o\0\35\0\0\0/com/ubu"...,
128}, {"\0\0\0\0\1\0\0\0", 8}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) =
136
poll([{fd=3, events=POLLIN}], 1, -1
I can only reproduce the problem on servers (with sshd, apache2, mysql, ... no
dbus). On desktop installations the restart command works fine.
I first saw the problem on lucid but it still occurs on maverick.
** Affects: udev (Ubuntu)
Importance: Undecided
Status: New
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"restart udev" hangs
https://bugs.launchpad.net/bugs/674704
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