SSL Error: syscall failure on Ubuntu 15.10

[danwalmsley]

Whenever I try to clone a public HTTPS repository on Ubuntu 15.10 I get:
SSL Error: Syscall failure.

On Windows no problem, anyone else having this issue?

[shiftkey]

@danwalmsley a couple of extra pieces of information that might help with troubleshooting:

• what version of Mono are you running?
• what version of libgit2sharp are you using?

[danwalmsley]

Hi, sorry for delay, Libgit2share nugget package = 0.22.0-pre20151023210959 (latest pre-release)
and LibGit2Sharp.NativeBinaries = 1.0.106.

[danwalmsley]

i'll give you the mono version shortly

[carlosmn]

This looks like it's OpenSSL giving very unhelpful output. Running your app under strace -f should help say what the syscall error is.

[danwalmsley]

ok thanks will give this a try and get back to you

[jameswalmsley]

Ubunutu 16.04 - strace -f at the point of failure:

[pid 1642] poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}])
[pid 1642] recvmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\1\36\34\0\0\0\0L\26\241\0L\0006\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 4096}], msg_controllen=0, msg_flags=0}, 0) = 32
[pid 1642] recvmsg(3, 0x7ffdcbad1120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid 1642] recvmsg(3, 0x7ffdcbad1120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid 1642] poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=8, events=POLLIN}], 3, 0) = 0 (Timeout)
[pid 1642] poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
[pid 1642] writev(3, [{"\2\0\4\0)\0\340\5\0@\0\0(\0\340\5", 16}, {NULL, 0}, {"", 0}], 3) = 16
[pid 1642] recvmsg(3, 0x7ffdcbad1d70, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid 1642] poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=8, events=POLLIN}], 3, -1 <unfinished ...>
[pid 5224] <... futex resumed> ) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4197, {1470430002, 541970000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4199, {1470430002, 542365000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4201, {1470430002, 542546000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4203, {1470430002, 542656000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4205, {1470430002, 542768000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4207, {1470430003, 41913000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4209, {1470430003, 42173000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4211, {1470430003, 42544000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
[pid 5224] futex(0x96bd60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 5224] futex(0x96bda4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 4213, {1470430003, 42738000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)

[danwalmsley]

Bump! Issue still persists!

[liiri]

@danwalmsley its been a long time - but any chance you resolved the issue?

[mattjohnsonpint]

I am also encountering this, on Debian 10 (Buster) with libgit2sharp 0.26.2.

[chaoscode]

Anyway we can get this fixed?

[Hex4dec]

Issue is deeper in libgit2 as I'm able to reproduce this with other bindings (guile-git) using Guix on Guix System.

[ethomson]

@Hex4dec I'm not familiar with guix- can you give a simple set of repro steps for me?

[Hex4dec]

This will probably not work on your system, but:

1. Install Guix (and maybe even Guix System)
2. Add the nonguix channel (see Installation section)
3. Wait for Guix to have a new commit (happens quite frequently)
4. Run guix pull
5. See the error