git & curl broken in EESSI 2025.06 compat layer?

[boegel]

$ which curl
/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/bin/curl

$ curl -OL https://github.com/robots.txt
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: github.com

$ which git
/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/bin/git

$ git clone https://github.com/EESSI/eessi-demo
Cloning into 'eessi-demo'...
fatal: unable to access 'https://github.com/EESSI/eessi-demo/': Could not resolve host: github.com

[casparvl]

In EESSI/software-layer#1278 , lara only saw this happening on one of your systems. And indeed for me, the above commands complete successfully.

Is it possible that the curl from the compat layer is somehow picking up on some local configuration, which breaks the resolution of github.com? Does the same thing work with a curl from the host?

[boegel]

@casparvl Can you check if you're also seeing this after initializing EESSI 2025.06?

It works fine with EESSI 2023.06 on the same system

[boegel]

In EESSI/software-layer#1278 , lara only saw this happening on one of your systems. And indeed for me, the above commands complete successfully.

I also see it on our login nodes, so it's not specific to a particular system.
In that PR, some builds were triggered for EESSI 2023.06 instead of 2025.06.

Is it possible that the curl from the compat layer is somehow picking up on some local configuration, which breaks the resolution of github.com? Does the same thing work with a curl from the host?

curl works just fine from the host

The EESSI init script sets $CURL_CA_BUNDLE to /etc/pki/tls/certs/ca-bundle.crt, see EESSI/software-layer#623

Same problem (Could not resolve host: github.com) after unsetting CURL_CA_BUNDLE

[ocaisa]

Anything in LD_LIBRARY_PATH? It's curl from the compat layer so it is not r-pathed

[bedroge]

I can't reproduce this either. Maybe try using strace on that command (and if possible, share the output here)?

[ocaisa]

Do you have a proxy? The environment variable does not work in that scenario it seems: curl/curl#16148

[laraPPr]

strace of the curl command

{EESSI 2025.06} []$ strace curl -OL https://github.com/robots.txt
execve("/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/bin/curl", ["curl", "-OL", "https://github.com/robots.txt"], 0x7ffd5be8c590 /* 115 vars */) = 0
brk(NULL)                               = 0x556656741000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdb220a6000
access("/etc/ld.so.preload", R_OK)      = 0
openat(AT_FDCWD, "/etc/ld.so.preload", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=23, ...}) = 0
mmap(NULL, 23, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 0x7fdb220a5000
close(3)                                = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/cvmfs/software.eessi.io/version"..., 4096) = 74
openat(AT_FDCWD, "/usr/lib64/libsnoopy.so", 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\0p9\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=54040, ...}) = 0
mmap(NULL, 54416, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb22097000
mmap(0x7fdb2209a000, 24576, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fdb2209a000
mmap(0x7fdb220a0000, 12288, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9000) = 0x7fdb220a0000
mmap(0x7fdb220a3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xb000) = 0x7fdb220a3000
close(3)                                = 0
munmap(0x7fdb220a5000, 23)              = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/glibc-hwcaps/x86-64-v3/libcurl.so.4", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/glibc-hwcaps/x86-64-v3/", 0x7ffcb2621880, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/glibc-hwcaps/x86-64-v2/libcurl.so.4", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/glibc-hwcaps/x86-64-v2/", 0x7ffcb2621880, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libcurl.so.4", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=864640, ...}) = 0
mmap(NULL, 867800, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21fc3000
mmap(0x7fdb21fd4000, 589824, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0x7fdb21fd4000
mmap(0x7fdb22064000, 180224, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa1000) = 0x7fdb22064000
mmap(0x7fdb22090000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xcc000) = 0x7fdb22090000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libz.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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=109376, ...}) = 0
mmap(NULL, 102800, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21fa9000
mmap(0x7fdb21fac000, 57344, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fdb21fac000
mmap(0x7fdb21fba000, 28672, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0x7fdb21fba000
mmap(0x7fdb21fc1000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7fdb21fc1000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=45330, ...}) = 0
mmap(NULL, 45330, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fdb21f9d000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/lib64/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\0n\2\0\0\0\0\0"..., 832) = 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
fstat(3, {st_mode=S_IFREG|0755, st_size=1913016, ...}) = 0
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
mmap(NULL, 1944664, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21dc2000
mmap(0x7fdb21de6000, 1388544, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0x7fdb21de6000
mmap(0x7fdb21f39000, 352256, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x177000) = 0x7fdb21f39000
mmap(0x7fdb21f8f000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1cc000) = 0x7fdb21f8f000
mmap(0x7fdb21f95000, 31832, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fdb21f95000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libcares.so.2", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=233696, ...}) = 0
mmap(NULL, 235904, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21d88000
mmap(0x7fdb21d90000, 151552, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0x7fdb21d90000
mmap(0x7fdb21db5000, 45056, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2d000) = 0x7fdb21db5000
mmap(0x7fdb21dc0000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x37000) = 0x7fdb21dc0000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libnghttp3.so.9", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=173256, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdb21d86000
mmap(NULL, 175616, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21d5b000
mmap(0x7fdb21d5f000, 81920, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0x7fdb21d5f000
mmap(0x7fdb21d73000, 65536, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7fdb21d73000
mmap(0x7fdb21d83000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x27000) = 0x7fdb21d83000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libnghttp2.so.14", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=190832, ...}) = 0
mmap(NULL, 193216, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21d2b000
mmap(0x7fdb21d31000, 90112, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7fdb21d31000
mmap(0x7fdb21d47000, 65536, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c000) = 0x7fdb21d47000
mmap(0x7fdb21d57000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2b000) = 0x7fdb21d57000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libpsl.so.5", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=75824, ...}) = 0
mmap(NULL, 78112, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21d17000
mmap(0x7fdb21d19000, 8192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fdb21d19000
mmap(0x7fdb21d1b000, 57344, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0x7fdb21d1b000
mmap(0x7fdb21d29000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0x7fdb21d29000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libssl.so.3", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1040584, ...}) = 0
mmap(NULL, 1042728, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21c18000
mmap(0x7fdb21c3a000, 638976, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7fdb21c3a000
mmap(0x7fdb21cd6000, 208896, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xbe000) = 0x7fdb21cd6000
mmap(0x7fdb21d09000, 57344, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf0000) = 0x7fdb21d09000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libcrypto.so.3", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=6030792, ...}) = 0
mmap(NULL, 6045640, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21600000
mmap(0x7fdb216df000, 3346432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xdf000) = 0x7fdb216df000
mmap(0x7fdb21a10000, 1253376, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x410000) = 0x7fdb21a10000
mmap(0x7fdb21b42000, 520192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x541000) = 0x7fdb21b42000
mmap(0x7fdb21bc1000, 12232, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fdb21bc1000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libidn2.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\0\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=203296, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdb21c16000
mmap(NULL, 205432, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21be3000
mmap(0x7fdb21be5000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fdb21be5000
mmap(0x7fdb21bed000, 159744, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x7fdb21bed000
mmap(0x7fdb21c14000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x30000) = 0x7fdb21c14000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libunistring.so.5", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=2068664, ...}) = 0
mmap(NULL, 1986928, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb2141a000
mmap(0x7fdb2142d000, 262144, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13000) = 0x7fdb2142d000
mmap(0x7fdb2146d000, 1626112, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x53000) = 0x7fdb2146d000
mmap(0x7fdb215fa000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1e0000) = 0x7fdb215fa000
mmap(0x7fdb215ff000, 368, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fdb215ff000
close(3)                                = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdb21be1000
arch_prctl(ARCH_SET_FS, 0x7fdb21be1e00) = 0
set_tid_address(0x7fdb21be20d0)         = 3745086
set_robust_list(0x7fdb21be20e0, 24)     = 0
rseq(0x7fdb21be1d40, 0x20, 0, 0x53053053) = 0
mprotect(0x7fdb21f8f000, 16384, PROT_READ) = 0
mprotect(0x7fdb215fa000, 16384, PROT_READ) = 0
mprotect(0x7fdb21c14000, 4096, PROT_READ) = 0
mprotect(0x7fdb21b42000, 507904, PROT_READ) = 0
mprotect(0x7fdb21d09000, 36864, PROT_READ) = 0
mprotect(0x7fdb21d29000, 4096, PROT_READ) = 0
mprotect(0x7fdb21d57000, 12288, PROT_READ) = 0
mprotect(0x7fdb21d83000, 4096, PROT_READ) = 0
mprotect(0x7fdb21dc0000, 4096, PROT_READ) = 0
mprotect(0x7fdb21fc1000, 4096, PROT_READ) = 0
mprotect(0x7fdb22090000, 20480, PROT_READ) = 0
mprotect(0x7fdb220a3000, 4096, PROT_READ) = 0
mprotect(0x55665545a000, 20480, PROT_READ) = 0
mprotect(0x7fdb220dc000, 8192, PROT_READ) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
munmap(0x7fdb21f9d000, 45330)           = 0
fcntl(0, F_GETFD)                       = 0
fcntl(1, F_GETFD)                       = 0
fcntl(2, F_GETFD)                       = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
getrandom("\x74\x8b\xaa\x2f\x61\x19\xf0\x97", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x556656741000
brk(0x556656762000)                     = 0x556656762000
futex(0x7fdb21bc16bc, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc16b0, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc16a8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc17b0, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc1690, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc1688, FUTEX_WAKE_PRIVATE, 2147483647) = 0
mmap(NULL, 135168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdb213f9000
futex(0x7fdb21bc11cc, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc1104, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc16f4, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc10f8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc16a0, FUTEX_WAKE_PRIVATE, 2147483647) = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/etc/ssl/openssl.cnf", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=12411, ...}) = 0
read(3, "#\n# OpenSSL example configuratio"..., 4096) = 4096
read(3, "d attributes must be the same, a"..., 4096) = 4096
read(3, "coding of an extension: beware e"..., 4096) = 4096
read(3, "cert = $insta::certout # insta.c"..., 4096) = 123
read(3, "", 4096)                       = 0
close(3)                                = 0
futex(0x7fdb21bc0eb8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc0efc, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc165c, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc1654, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc0e98, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21bc1680, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fdb21d16924, FUTEX_WAKE_PRIVATE, 2147483647) = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=3068768, ...}) = 0
mmap(NULL, 3068768, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fdb21000000
close(3)                                = 0
openat(AT_FDCWD, "/user/gent/461/vsc46128/.curlrc", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/user/gent/461/vsc46128/.config/curlrc", O_RDONLY) = -1 ENOENT (No such file or directory)
geteuid()                               = 2546128
newfstatat(AT_FDCWD, "/etc/nsswitch.conf", {st_mode=S_IFREG|0644, st_size=3012, ...}, 0) = 0
newfstatat(AT_FDCWD, "/", {st_mode=S_IFDIR|0555, st_size=4096, ...}, 0) = 0
openat(AT_FDCWD, "/etc/nsswitch.conf", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=3012, ...}) = 0
read(3, "# Generated by authselect on Tue"..., 4096) = 3012
read(3, "", 4096)                       = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=3012, ...}) = 0
close(3)                                = 0
openat(AT_FDCWD, "/etc/passwd", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2861, ...}) = 0
lseek(3, 0, SEEK_SET)                   = 0
read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 2861
read(3, "", 4096)                       = 0
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=45330, ...}) = 0
mmap(NULL, 45330, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fdb21f9d000
close(3)                                = 0
openat(AT_FDCWD, "/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/lib64/libnss_sss.so.2", 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\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=47728, ...}) = 0
mmap(NULL, 50248, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdb21bd4000
mmap(0x7fdb21bd6000, 28672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fdb21bd6000
mmap(0x7fdb21bdd000, 8192, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9000) = 0x7fdb21bdd000
mmap(0x7fdb21bdf000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x7fdb21bdf000
close(3)                                = 0
mprotect(0x7fdb21bdf000, 4096, PROT_READ) = 0
munmap(0x7fdb21f9d000, 45330)           = 0
openat(AT_FDCWD, "/var/lib/sss/mc/passwd", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0664, st_size=9253600, ...}) = 0
mmap(NULL, 9253600, PROT_READ, MAP_SHARED, 3, 0) = 0x7fdb20600000
fstat(3, {st_mode=S_IFREG|0664, st_size=9253600, ...}) = 0
openat(AT_FDCWD, "/user/gent/461/vsc46128/.curlrc", O_RDONLY) = -1 ENOENT (No such file or directory)
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
brk(0x556656783000)                     = 0x556656783000
ioctl(0, TIOCGWINSZ, {ws_row=47, ws_col=204, ws_xpixel=0, ws_ypixel=0}) = 0
eventfd2(0, EFD_CLOEXEC|EFD_NONBLOCK)   = 4
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
poll([{fd=4, events=POLLIN}], 1, 0)     = 0 (Timeout)
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
openat(AT_FDCWD, "/etc/resolv.conf", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=137, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=137, ...}) = 0
lseek(5, 0, SEEK_SET)                   = 0
read(5, "# Generated by NetworkManager\nse"..., 137) = 137
lseek(5, 137, SEEK_SET)                 = 137
close(5)                                = 0
openat(AT_FDCWD, "/etc/nsswitch.conf", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=3012, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=3012, ...}) = 0
lseek(5, 0, SEEK_SET)                   = 0
read(5, "# Generated by authselect on Tue"..., 3012) = 3012
lseek(5, 3012, SEEK_SET)                = 3012
close(5)                                = 0
openat(AT_FDCWD, "/etc/netsvc.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/svc.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
getrandom("\xd5\xd4\xf5\xd0\x0c\xe6\xf7\x21\x2d\x99\x46\xf5\x22\x83\x6d\xbd\x96\xb7\x95\x50\x84\x05\x3d\xf7\x53\xbe\x42\x59\xc1\x94\x86\xb7"..., 256, 0) = 256
socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 5
close(5)                                = 0
newfstatat(AT_FDCWD, "/etc/hosts", {st_mode=S_IFREG|0644, st_size=89765, ...}, 0) = 0
openat(AT_FDCWD, "/etc/hosts", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=89765, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=89765, ...}) = 0
lseek(5, 86016, SEEK_SET)               = 86016
read(5, "1.44.49\tnode5721.dodrio.os\tnode5"..., 3749) = 3749
lseek(5, 0, SEEK_SET)                   = 0
mmap(NULL, 135168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdb213d8000
read(5, "127.0.0.1\tlocalhost.localdomain\t"..., 86016) = 86016
read(5, "1.44.49\tnode5721.dodrio.os\tnode5"..., 4096) = 3749
close(5)                                = 0
brk(0x5566567a4000)                     = 0x5566567a4000
brk(0x5566567c5000)                     = 0x5566567c5000
brk(0x5566567e6000)                     = 0x5566567e6000
brk(0x556656807000)                     = 0x556656807000
brk(0x556656828000)                     = 0x556656828000
brk(0x556656849000)                     = 0x556656849000
brk(0x55665686a000)                     = 0x55665686a000
brk(0x55665688b000)                     = 0x55665688b000
brk(0x5566568ac000)                     = 0x5566568ac000
brk(0x5566568cd000)                     = 0x5566568cd000
brk(0x5566568ee000)                     = 0x5566568ee000
brk(0x55665690f000)                     = 0x55665690f000
munmap(0x7fdb213d8000, 135168)          = 0
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 5
fcntl(5, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
connect(5, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(5, {sa_family=AF_INET, sin_port=htons(46684), sin_addr=inet_addr("127.0.0.1")}, [128 => 16]) = 0
sendto(5, "\231-\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0\1\0\1\0\0)\4"..., 51, 0, NULL, 0) = 51
sendto(5, "YB\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0\34\0\1\0\0)\4"..., 51, 0, NULL, 0) = -1 ECONNREFUSED (Connection refused)
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 6
fcntl(6, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
fcntl(6, F_SETFD, FD_CLOEXEC)           = 0
connect(6, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(6, {sa_family=AF_INET, sin_port=htons(45033), sin_addr=inet_addr("127.0.0.1")}, [128 => 16]) = 0
sendto(6, "\231-\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0\1\0\1\0\0)\4"..., 51, 0, NULL, 0) = 51
close(5)                                = 0
sendto(6, "YB\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0\34\0\1\0\0)\4"..., 51, 0, NULL, 0) = -1 ECONNREFUSED (Connection refused)
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 5
fcntl(5, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
connect(5, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(5, {sa_family=AF_INET, sin_port=htons(42359), sin_addr=inet_addr("127.0.0.1")}, [128 => 16]) = 0
sendto(5, "\231-\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0\1\0\1\0\0)\4"..., 51, 0, NULL, 0) = 51
close(6)                                = 0
sendto(5, "YB\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0\34\0\1\0\0)\4"..., 51, 0, NULL, 0) = -1 ECONNREFUSED (Connection refused)
close(5)                                = 0
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 5
fcntl(5, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
connect(5, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(5, {sa_family=AF_INET, sin_port=htons(49092), sin_addr=inet_addr("127.0.0.1")}, [128 => 16]) = 0
sendto(5, "\346`\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0A\0\1\0\0)\4"..., 51, 0, NULL, 0) = 51
poll([{fd=5, events=POLLIN|POLLRDNORM}], 1, 0) = 1 ([{fd=5, revents=POLLERR}])
brk(0x55665694d000)                     = 0x55665694d000
recvfrom(5, 0x55665690cd52, 131069, 0, 0x7ffcb2621d70, [128]) = -1 ECONNREFUSED (Connection refused)
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 6
fcntl(6, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
fcntl(6, F_SETFD, FD_CLOEXEC)           = 0
connect(6, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(6, {sa_family=AF_INET, sin_port=htons(45224), sin_addr=inet_addr("127.0.0.1")}, [128 => 16]) = 0
sendto(6, "\346`\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0A\0\1\0\0)\4"..., 51, 0, NULL, 0) = 51
close(5)                                = 0
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "%", 1%)                        = 1
write(2, " ", 1 )                        = 1
write(2, "T", 1T)                        = 1
write(2, "o", 1o)                        = 1
write(2, "t", 1t)                        = 1
write(2, "a", 1a)                        = 1
write(2, "l", 1l)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "%", 1%)                        = 1
write(2, " ", 1 )                        = 1
write(2, "R", 1R)                        = 1
write(2, "e", 1e)                        = 1
write(2, "c", 1c)                        = 1
write(2, "e", 1e)                        = 1
write(2, "i", 1i)                        = 1
write(2, "v", 1v)                        = 1
write(2, "e", 1e)                        = 1
write(2, "d", 1d)                        = 1
write(2, " ", 1 )                        = 1
write(2, "%", 1%)                        = 1
write(2, " ", 1 )                        = 1
write(2, "X", 1X)                        = 1
write(2, "f", 1f)                        = 1
write(2, "e", 1e)                        = 1
write(2, "r", 1r)                        = 1
write(2, "d", 1d)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "A", 1A)                        = 1
write(2, "v", 1v)                        = 1
write(2, "e", 1e)                        = 1
write(2, "r", 1r)                        = 1
write(2, "a", 1a)                        = 1
write(2, "g", 1g)                        = 1
write(2, "e", 1e)                        = 1
write(2, " ", 1 )                        = 1
write(2, "S", 1S)                        = 1
write(2, "p", 1p)                        = 1
write(2, "e", 1e)                        = 1
write(2, "e", 1e)                        = 1
write(2, "d", 1d)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "T", 1T)                        = 1
write(2, "i", 1i)                        = 1
write(2, "m", 1m)                        = 1
write(2, "e", 1e)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "T", 1T)                        = 1
write(2, "i", 1i)                        = 1
write(2, "m", 1m)                        = 1
write(2, "e", 1e)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "T", 1T)                        = 1
write(2, "i", 1i)                        = 1
write(2, "m", 1m)                        = 1
write(2, "e", 1e)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "C", 1C)                        = 1
write(2, "u", 1u)                        = 1
write(2, "r", 1r)                        = 1
write(2, "r", 1r)                        = 1
write(2, "e", 1e)                        = 1
write(2, "n", 1n)                        = 1
write(2, "t", 1t)                        = 1
write(2, "\n", 1
)                       = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "D", 1D)                        = 1
write(2, "l", 1l)                        = 1
write(2, "o", 1o)                        = 1
write(2, "a", 1a)                        = 1
write(2, "d", 1d)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "U", 1U)                        = 1
write(2, "p", 1p)                        = 1
write(2, "l", 1l)                        = 1
write(2, "o", 1o)                        = 1
write(2, "a", 1a)                        = 1
write(2, "d", 1d)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "T", 1T)                        = 1
write(2, "o", 1o)                        = 1
write(2, "t", 1t)                        = 1
write(2, "a", 1a)                        = 1
write(2, "l", 1l)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "S", 1S)                        = 1
write(2, "p", 1p)                        = 1
write(2, "e", 1e)                        = 1
write(2, "n", 1n)                        = 1
write(2, "t", 1t)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "L", 1L)                        = 1
write(2, "e", 1e)                        = 1
write(2, "f", 1f)                        = 1
write(2, "t", 1t)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "S", 1S)                        = 1
write(2, "p", 1p)                        = 1
write(2, "e", 1e)                        = 1
write(2, "e", 1e)                        = 1
write(2, "d", 1d)                        = 1
write(2, "\n", 1
)                       = 1
)                       = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
write(2, " ", 1 )                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, ":", 1:)                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, ":", 1:)                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, " ", 1 )                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, ":", 1:)                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, ":", 1:)                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, " ", 1 )                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, ":", 1:)                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, ":", 1:)                        = 1
write(2, "-", 1-)                        = 1
write(2, "-", 1-)                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, " ", 1 )                        = 1
write(2, "0", 10)                        = 1
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
poll([{fd=6, events=POLLIN}, {fd=4, events=POLLIN}], 2, 1000) = 1 ([{fd=6, revents=POLLERR}])
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
poll([{fd=6, events=POLLIN|POLLRDNORM}], 1, 0) = 1 ([{fd=6, revents=POLLERR}])
recvfrom(6, 0x55665690cd52, 131069, 0, 0x7ffcb2621ef0, [128]) = -1 ECONNREFUSED (Connection refused)
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 5
fcntl(5, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
connect(5, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(5, {sa_family=AF_INET, sin_port=htons(52549), sin_addr=inet_addr("127.0.0.1")}, [128 => 16]) = 0
sendto(5, "\346`\1\0\0\1\0\0\0\0\0\1\6github\3com\0\0A\0\1\0\0)\4"..., 51, 0, NULL, 0) = 51
close(6)                                = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}], 2, 1000) = 1 ([{fd=5, revents=POLLERR}])
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
poll([{fd=5, events=POLLIN|POLLRDNORM}], 1, 0) = 1 ([{fd=5, revents=POLLERR}])
recvfrom(5, 0x55665690cd52, 131069, 0, 0x7ffcb2621ef0, [128]) = -1 ECONNREFUSED (Connection refused)
close(5)                                = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fdb21dfde10}, NULL, 8) = 0
write(2, "c", 1c)                        = 1
write(2, "u", 1u)                        = 1
write(2, "r", 1r)                        = 1
write(2, "l", 1l)                        = 1
write(2, ":", 1:)                        = 1
write(2, " ", 1 )                        = 1
write(2, "(", 1()                        = 1
write(2, "6", 16)                        = 1
write(2, ")", 1))                        = 1
write(2, " ", 1 )                        = 1
write(2, "C", 1C)                        = 1
write(2, "o", 1o)                        = 1
write(2, "u", 1u)                        = 1
write(2, "l", 1l)                        = 1
write(2, "d", 1d)                        = 1
write(2, " ", 1 )                        = 1
write(2, "n", 1n)                        = 1
write(2, "o", 1o)                        = 1
write(2, "t", 1t)                        = 1
write(2, " ", 1 )                        = 1
write(2, "r", 1r)                        = 1
write(2, "e", 1e)                        = 1
write(2, "s", 1s)                        = 1
write(2, "o", 1o)                        = 1
write(2, "l", 1l)                        = 1
write(2, "v", 1v)                        = 1
write(2, "e", 1e)                        = 1
write(2, " ", 1 )                        = 1
write(2, "h", 1h)                        = 1
write(2, "o", 1o)                        = 1
write(2, "s", 1s)                        = 1
write(2, "t", 1t)                        = 1
write(2, ":", 1:)                        = 1
write(2, " ", 1 )                        = 1
write(2, "g", 1g)                        = 1
write(2, "i", 1i)                        = 1
write(2, "t", 1t)                        = 1
write(2, "h", 1h)                        = 1
write(2, "u", 1u)                        = 1
write(2, "b", 1b)                        = 1
write(2, ".", 1.)                        = 1
write(2, "c", 1c)                        = 1
write(2, "o", 1o)                        = 1
write(2, "m", 1m)                        = 1
write(2, "\n", 1
)                       = 1
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f10a4249e10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f10a4249e10}, NULL, 8) = 0
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f10a4249e10}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f10a4249e10}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f10a4249e10}, NULL, 8) = 0
close(4)                                = 0
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f10a4249e10}, NULL, 8) = 0
munmap(0x7f10a400c000, 135168)          = 0
exit_group(6)                           = ?
+++ exited with 6 +++

[casparvl]

@casparvl Can you check if you're also seeing this after initializing EESSI 2025.06?

$ module load EESSI/2025.06
Module for EESSI/2025.06 loaded successfully
$ which curl
/cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/bin/curl
$ curl -OL https://github.com/robots.txt
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2274  100  2274    0     0  18018      0 --:--:-- --:--:-- --:--:-- 18192
$

Works for me.

Small tip: throw Bobs strace into an AI friend, next to your own strace, describe your problem, and ask it if anything stands out in the strace output that might explain why one works and one doesn't.

[bedroge]

connect(6, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("127.0.0.1")}, 16) = 0

It looks like it's using localhost as DNS server. When I run that myself, I get the correct IP address of our DNS server here, as listed in /etc/resolv.conf. Do you have any special DNS setup/configuration?

[casparvl]

Oh, and this is the verbose output on a system where the command completes correctly - might be easier to parse (even for an AI friend):

$ curl -vOL https://github.com/robots.txt                                                                                                                                                                                                               [5/3138]
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0* Host github.com:443 was resolved.
* IPv6: (none)
* IPv4: <REDACTED>
*   Trying <REDACTED>:443...
* ALPN: curl offers h2,http/1.1
} [5 bytes data]
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
} [1556 bytes data]
*  CAfile: /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/etc/ssl/certs/ca-certificates.crt
*  CApath: /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/etc/ssl/certs
{ [5 bytes data]
* TLSv1.3 (IN), TLS handshake, Server hello (2):
{ [122 bytes data]
* TLSv1.3 (IN), TLS change cipher, Change cipher spec (1):
{ [1 bytes data]
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
{ [19 bytes data]
* TLSv1.3 (IN), TLS handshake, Certificate (11):
{ [3135 bytes data]
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
{ [79 bytes data]
* TLSv1.3 (IN), TLS handshake, Finished (20):
{ [36 bytes data]
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
} [1 bytes data]
* TLSv1.3 (OUT), TLS handshake, Finished (20):
} [36 bytes data]
* SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 / x25519 / id-ecPublicKey
* ALPN: server accepted h2
* Server certificate:
*  subject: CN=github.com
*  start date: Feb  5 00:00:00 2025 GMT
*  expire date: Feb  5 23:59:59 2026 GMT
*  subjectAltName: host "github.com" matched cert's "github.com"
*  issuer: C=GB; ST=Greater Manchester; L=Salford; O=Sectigo Limited; CN=Sectigo ECC Domain Validation Secure Server CA
*  SSL certificate verify ok.
*   Certificate level 0: Public key type EC/prime256v1 (256/128 Bits/secBits), signed using ecdsa-with-SHA256
*   Certificate level 1: Public key type EC/prime256v1 (256/128 Bits/secBits), signed using ecdsa-with-SHA384
*   Certificate level 2: Public key type EC/secp384r1 (384/192 Bits/secBits), signed using ecdsa-with-SHA384
* Connected to github.com (140.82.121.3) port 443
* using HTTP/2
* [HTTP/2] [1] OPENED stream for https://github.com/robots.txt
* [HTTP/2] [1] [:method: GET]
* [HTTP/2] [1] [:scheme: https]
* [HTTP/2] [1] [:authority: github.com]
* [HTTP/2] [1] [:path: /robots.txt]
* [HTTP/2] [1] [user-agent: curl/8.14.0]
* [HTTP/2] [1] [accept: */*]
} [5 bytes data]
> GET /robots.txt HTTP/2
> Host: github.com
> User-Agent: curl/8.14.0
> Accept: */*
>
* Request completely sent off
{ [5 bytes data]
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
{ [57 bytes data]
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
{ [57 bytes data]
< HTTP/2 200
< date: Tue, 02 Dec 2025 10:41:46 GMT
< content-type: text/plain
< last-modified: Tue, 02 Dec 2025 09:56:59 GMT
< etag: W/"692eb7eb-8e2"
< vary: Accept-Encoding, Accept, X-Requested-With
< server: github.com
< x-frame-options: DENY
< strict-transport-security: max-age=31536000; includeSubDomains; preload
< accept-ranges: bytes
< set-cookie: _gh_sess=JHhd%2BjMq5yubrxpQwQgEe5MhltE%2F3s3zyHBslHfQ5g9kcvzjnWc%2BEIqs%2BYZKlXvT8ckdXkqo1edBtVotV5Mv0n2Up8CLV%2FQlq%2BVKVN4iZOubRhPEzFxXQLWyKuD4EKaP%2BQCjAi%2BcUZFT7IDMBIkh2O1C2PrweC3ucqdA1qJcen6JTfVdje%2F%2BqktSYnrZQeiU47AvWKnSwD7O44wFWSJkmG70zQh2W8TTLakLSh26t%2BNwZtctzBuUjST57H4cBiyjlNj3uSHLOcrLQfxpRKURxg%3D%3D--5yPGNek8EERc9fE0--0Y25U0wWSKntfvYfqw34dA%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax
< set-cookie: _octo=GH1.1.1070654759.1764672106; Path=/; Domain=github.com; Expires=Wed, 02 Dec 2026 10:41:46 GMT; Secure; SameSite=Lax
< set-cookie: logged_in=no; Path=/; Domain=github.com; Expires=Wed, 02 Dec 2026 10:41:46 GMT; HttpOnly; Secure; SameSite=Lax
< content-length: 2274
< x-github-request-id: 99CA:28EE9F:AF9D28B:9992BDB:692EC26A
<
{ [5 bytes data]
100  2274  100  2274    0     0  17671      0 --:--:-- --:--:-- --:--:-- 17765
* Connection #0 to host github.com left intact

[bedroge]

Answer from the AI friend (it makes a bit of sense, though I don't understand why it does work with the host tools and with the older EESSI version):

Your strace shows the problem: DNS lookups are being sent to a local resolver on 127.0.0.1 (or the DNS stub), but every UDP query gets ECONNREFUSED. that makes the resolver fail and so curl/git print Could not resolve host: github.com.

Why that happens (based on the trace)

• connect/sendto calls target 127.0.0.1 and the reply is ECONNREFUSED. that means nothing is listening on UDP port 53 on localhost (or the local resolver refused the request).

• curl then gives up and prints the usual “Could not resolve host” error.

Quick checklist & commands you can run (one-liners)

# see which nameserver(s) are configured
cat /etc/resolv.conf

# check for a DNS server bound to port 53 on localhost
ss -ulpn | grep :53 || sudo ss -ulpn | grep :53

# look for typical resolver processes
ps aux | egrep 'systemd-resolved|dnsmasq|named|unbound|pdnsd|sssd'

# test DNS against localhost (will show the ECONNREFUSED you saw)
dig @127.0.0.1 github.com

# test DNS against a public server to verify general network reachability
dig @8.8.8.8 github.com

# alternative quick test using an explicit public resolver from curl
curl --dns-servers 8.8.8.8 -I https://github.com/robots.txt

Likely causes

• The local DNS stub (systemd-resolved, dnsmasq, etc.) is not running or crashed, while /etc/resolv.conf points at 127.0.0.1 (or your local stub).

• Local firewall or network policy prevents binding/listening on localhost:53 (less common).

• On some HPC/cluster setups outbound DNS is intentionally blocked or redirected — then the local stub may be disabled by design.

[laraPPr]

I also had a back and forth with the AI friend and the difference that I found was that it uses /lib64/libresolv.so.2 outside the EESSI environment but uses /etc/resolv.conf with EESSI. And that causes the problem.

without EESSI

[vsc@gligar10 ~]$ ldd $(which curl)
        linux-vdso.so.1 (0x00007fff53c85000)
        /usr/$LIB/libsnoopy.so => /usr/lib64/libsnoopy.so (0x00007f91fd471000)
        libcurl.so.4 => /lib64/libcurl.so.4 (0x00007f91fd3c3000)
        libz.so.1 => /lib64/libz.so.1 (0x00007f91fd3a9000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f91fd000000)
        libnghttp2.so.14 => /lib64/libnghttp2.so.14 (0x00007f91fd37f000)
        libidn2.so.0 => /lib64/libidn2.so.0 (0x00007f91fd35e000)
        libssh.so.4 => /lib64/libssh.so.4 (0x00007f91fd2e8000)
        libpsl.so.5 => /lib64/libpsl.so.5 (0x00007f91fd2d4000)
        libssl.so.3 => /lib64/libssl.so.3 (0x00007f91fcf1a000)
        libcrypto.so.3 => /lib64/libcrypto.so.3 (0x00007f91fca00000)
        libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007f91fd27e000)
        libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007f91fc925000)
        libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007f91fd263000)
        libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007f91fd25c000)
        libldap.so.2 => /lib64/libldap.so.2 (0x00007f91fc8bf000)
        liblber.so.2 => /lib64/liblber.so.2 (0x00007f91fd24b000)
        libbrotlidec.so.1 => /lib64/libbrotlidec.so.1 (0x00007f91fd23d000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f91fd4c0000)
        libunistring.so.2 => /lib64/libunistring.so.2 (0x00007f91fc73a000)
        libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007f91fd22a000)
        libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f91fd223000)
        libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f91fd20f000)
        libevent-2.1.so.7 => /lib64/libevent-2.1.so.7 (0x00007f91fc6e1000)
        libsasl2.so.3 => /lib64/libsasl2.so.3 (0x00007f91fc6c1000)
        libbrotlicommon.so.1 => /lib64/libbrotlicommon.so.1 (0x00007f91fc69e000)
        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f91fc671000)
        libcrypt.so.2 => /lib64/libcrypt.so.2 (0x00007f91fc637000)
        libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007f91fc59b000)

With EESSI

{EESSI 2025.06} [vsc@gligar10 ~]$ ldd $(which curl)
        linux-vdso.so.1 (0x00007ffe497d7000)
        /usr/$LIB/libsnoopy.so => /usr/lib64/libsnoopy.so (0x00007f836d88d000)
        libcurl.so.4 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libcurl.so.4 (0x00007f836d7b9000)
        libz.so.1 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libz.so.1 (0x00007f836d79f000)
        libc.so.6 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/lib64/libc.so.6 (0x00007f836d5b8000)
        libcares.so.2 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libcares.so.2 (0x00007f836d57e000)
        libnghttp3.so.9 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libnghttp3.so.9 (0x00007f836d551000)
        libnghttp2.so.14 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libnghttp2.so.14 (0x00007f836d521000)
        libpsl.so.5 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libpsl.so.5 (0x00007f836d50d000)
        libssl.so.3 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libssl.so.3 (0x00007f836d40e000)
        libcrypto.so.3 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libcrypto.so.3 (0x00007f836ce00000)
        /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/lib64/ld-linux-x86-64.so.2 (0x00007f836d8ee000)
        libidn2.so.0 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libidn2.so.0 (0x00007f836d3d9000)
        libunistring.so.5 => /cvmfs/software.eessi.io/versions/2025.06/compat/linux/x86_64/usr/lib64/libunistring.so.5 (0x00007f836cc1a000)

It said that because c-ares is used with EESSI dns is not resolved correctly.