[systemd-devel] test-ipv4ll never finishes

[Jan Janssen]

Hi,

on my system, test-ipv4ll waits forever on an epoll:

$ strace ./test-ipv4ll 
execve("./test-ipv4ll", ["./test-ipv4ll"], [/* 64 vars */]) = 0
brk(0)                                  = 0x7f387087e000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=231109, ...}) = 0
mmap(NULL, 231109, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f386f85e000
close(3)                                = 0
open("/usr/lib/librt.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\"\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=31760, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f386f85d000
mmap(NULL, 2128912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f386f46f000
mprotect(0x7f386f476000, 2093056, PROT_NONE) = 0
mmap(0x7f386f675000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f386f675000
close(3)                                = 0
open("/usr/lib/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000`\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=149301, ...}) = 0
mmap(NULL, 2217104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f386f251000
mprotect(0x7f386f269000, 2097152, PROT_NONE) = 0
mmap(0x7f386f469000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f386f469000
mmap(0x7f386f46b000, 13456, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f386f46b000
close(3)                                = 0
open("/usr/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20\1\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=2047384, ...}) = 0
mmap(NULL, 3858192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f386eea3000
mprotect(0x7f386f047000, 2097152, PROT_NONE) = 0
mmap(0x7f386f247000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1a4000) = 0x7f386f247000
mmap(0x7f386f24d000, 16144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f386f24d000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f386f85c000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f386f85a000
arch_prctl(ARCH_SET_FS, 0x7f386f85a740) = 0
mprotect(0x7f386f247000, 16384, PROT_READ) = 0
mprotect(0x7f386f469000, 4096, PROT_READ) = 0
mprotect(0x7f386f675000, 4096, PROT_READ) = 0
mprotect(0x7f386f8ab000, 4096, PROT_READ) = 0
mprotect(0x7f386f897000, 4096, PROT_READ) = 0
munmap(0x7f386f85e000, 231109)          = 0
set_tid_address(0x7f386f85aa10)         = 30468
set_robust_list(0x7f386f85aa20, 24)     = 0
rt_sigaction(SIGRTMIN, {0x7f386f256b10, [], SA_RESTORER|SA_SIGINFO, 0x7f386f2604b0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x7f386f256ba0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f386f2604b0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
brk(0)                                  = 0x7f387087e000
brk(0x7f387089f000)                     = 0x7f387089f000
epoll_create1(EPOLL_CLOEXEC)            = 3
socketpair(PF_LOCAL, SOCK_DGRAM|SOCK_NONBLOCK, 0, [4, 5]) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=1887953936, u64=139880382850064}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
close(4)                                = 0
epoll_wait(3,