gvisor icon indicating copy to clipboard operation
gvisor copied to clipboard
verified publisher icon google

Control characters within container shells are not respected

Open sudosammy opened this issue 5 years ago • 6 comments

Description I think this is a similar problem to https://github.com/google/gvisor/issues/90. I am running SSH in a container and when a user within the shell environment makes a control signals like ^C it is not respected / does not work. These control characters work as expected in runc.

Expected Behaviour Ctrl+C / ^C within a shell environment running on a container should be respected and send a SIGINT to the running binary.

Observed Behaviour The connecting terminal's bell rings and gVisor does not respect the ^C. The following log snippet was captured after performing a ^C within an SSH session while monitoring the logs with grep -E 'sshd|bash' *boot.

11:30:32.029941    5866 strace.go:627] [   8] sshd X select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [], null, null) = 0x1 (32.957520627s)
11:30:32.030344    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8, 0x8)
11:30:32.030408    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8 [], 0x8) = 0x0 (4.679µs)
11:30:32.030817    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], 0x0, 0x8)
11:30:32.030864    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], null, 0x8) = 0x0 (4.073µs)
11:30:32.031316    5866 strace.go:583] [   8] sshd E read(0x4 socket:[5], 0x7fd9416917d8, 0x4000)
11:30:32.031533    5866 strace.go:621] [   8] sshd X read(0x4 socket:[5], 0x7fd9416917d8 "6+Ӻ\xf3\x01\xff\x16\xac\xe7\xe7\xa0\x16\x96y\x9b\xab\xbf<\xaf\xf6\xd3\xd5;^\xda\x1cUf\xf0[\x81Z\x9a/\x96", 0x4000) = 0x24 (21.43µs)
11:30:32.033265    5866 strace.go:589] [   8] sshd E select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [8], null, null)
11:30:32.033314    5866 strace.go:627] [   8] sshd X select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [8], null, null) = 0x1 (14.643µs)
11:30:32.033510    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8, 0x8)
11:30:32.033537    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8 [], 0x8) = 0x0 (3.003µs)
11:30:32.033813    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], 0x0, 0x8)
11:30:32.033842    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], null, 0x8) = 0x0 (2.041µs)
11:30:32.034112    5866 strace.go:583] [   8] sshd E write(0x8 /dev/pts/ptmx, 0x558cb94c1a20 "\x03", 0x1)
11:30:32.034162    5866 strace.go:621] [   8] sshd X write(0x8 /dev/pts/ptmx, ..., 0x1) = 0x1 (21.438µs)
11:30:32.034368    5866 strace.go:630] [   9] bash X pselect6(0x1, 0x7f8cfc4a9aa8 [0], null, null, null, 0x7f8cfc4a9a70 [SIGKILL SIGUSR2 SIGPIPE SIGTERM SIGSTKFLT SIGCONT SIGTTIN SIGXCPU SIGXFSZ SIGPROF SIGIO 33 34 39 40 41 42 43 44 45 46 47]) = 0x1 (32.963779975s)
11:30:32.034466    5866 strace.go:583] [   8] sshd E ioctl(0x8 /dev/pts/ptmx, 0x5401, 0x7fd94169570c)
11:30:32.034498    5866 strace.go:621] [   8] sshd X ioctl(0x8 /dev/pts/ptmx, 0x5401, 0x7fd94169570c) = 0x0 (5.185µs)
11:30:32.034783    5866 strace.go:589] [   8] sshd E select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [], null, null)
11:30:32.035306    5866 strace.go:583] [   9] bash E read(0x0 /dev/pts/0, 0x7f8cfc4a9aa7, 0x1)
11:30:32.035344    5866 strace.go:621] [   9] bash X read(0x0 /dev/pts/0, 0x7f8cfc4a9aa7 "\x03", 0x1) = 0x1 (7.161µs)
11:30:32.035558    5866 strace.go:583] [   9] bash E writev(0x2 /dev/pts/0, 0x7f8cfc4a9a90 {base=0x7fc3159c60a8, len=0}, {base=0x7f8cfc4a9aff, len=1, "\a"}, 0x2)
11:30:32.035700    5866 strace.go:621] [   9] bash X writev(0x2 /dev/pts/0, ..., 0x2) = 0x1 (64.578µs)
11:30:32.035797    5866 strace.go:627] [   8] sshd X select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [], null, null) = 0x1 (982.529µs)
11:30:32.035912    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8, 0x8)
11:30:32.035936    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8 [], 0x8) = 0x0 (2.342µs)
11:30:32.035968    5866 strace.go:592] [   9] bash E pselect6(0x1, 0x7f8cfc4a9aa8 [0], null, null, null, 0x7f8cfc4a9a70 [SIGKILL SIGUSR2 SIGPIPE SIGTERM SIGSTKFLT SIGCONT SIGTTIN SIGXCPU SIGXFSZ SIGPROF SIGIO 33 34 39 40 41 42 43 44 45 46 47])
11:30:32.036169    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], 0x0, 0x8)
11:30:32.036193    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], null, 0x8) = 0x0 (1.794µs)
11:30:32.036356    5866 strace.go:583] [   8] sshd E read(0xa /dev/pts/ptmx, 0x7fd9416916a8, 0x4000)
11:30:32.036386    5866 strace.go:621] [   8] sshd X read(0xa /dev/pts/ptmx, 0x7fd9416916a8 "\a", 0x4000) = 0x1 (5.835µs)
11:30:32.036581    5866 strace.go:575] [   8] sshd E getpid()
11:30:32.036609    5866 strace.go:612] [   8] sshd X getpid() = 0x8 (1.831µs)
11:30:32.036812    5866 strace.go:589] [   8] sshd E select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [4], null, null)
11:30:32.036860    5866 strace.go:627] [   8] sshd X select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [4], null, null) = 0x1 (8.044µs)
11:30:32.037040    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8, 0x8)
11:30:32.037068    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_BLOCK, 0x7fd941695758 [SIGCHLD], 0x7fd9416956d8 [], 0x8) = 0x0 (2.228µs)
11:30:32.037257    5866 strace.go:586] [   8] sshd E rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], 0x0, 0x8)
11:30:32.037298    5866 strace.go:624] [   8] sshd X rt_sigprocmask(SIG_SETMASK, 0x7fd9416956d8 [], null, 0x8) = 0x0 (2.247µs)
11:30:32.037485    5866 strace.go:583] [   8] sshd E write(0x4 socket:[5], 0x558cb94d2100 "\"\xe0\xea*\x0fЫ\xac\x9d\xb3\t\xe4\xee \xcf/\x1fX\xfc1l\xf7K\xccyr\xce\xc9 \x81\x1a\\ T\x9e\xdc", 0x24)
11:30:32.037556    5866 strace.go:621] [   8] sshd X write(0x4 socket:[5], ..., 0x24) = 0x24 (50.532µs)
11:30:32.037765    5866 strace.go:589] [   8] sshd E select(0xb, 0x558cb94d2bc0 [4 5 10], 0x558cb94d4200 [], null, null)

Happy to collect other logs as necessary.

Steps to reproduce

  1. Get this container: https://github.com/WACTF/WACTF-development/tree/97bbbc584e89f87eaa554224823454219c76a49f/shellbox
  2. Remove the reduced capabilities: https://github.com/WACTF/WACTF-development/blob/97bbbc584e89f87eaa554224823454219c76a49f/shellbox/docker-compose.yaml#L11-L19
  3. Run container in gVisor and SSH to it with something like ssh user@localhost pw: toor
  4. Run a command such as ping 8.8.8.8 and attempt to Ctrl+C out of it.

Environment

  • runsc -version: runsc version release-20201030.0 / spec: 1.0.1-dev
  • docker version:
Client: Docker Engine - Community
 Version:           19.03.13
 API version:       1.40
 Go version:        go1.13.15
 Git commit:        4484c46d9d
 Built:             Wed Sep 16 17:02:36 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.13
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       4484c46d9d
  Built:            Wed Sep 16 17:01:06 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.3.7
  GitCommit:        8fba4e9a7d01810a393d5d25a3621dc101981175
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683
  • uname -a: Linux xxx 4.15.0-123-generic #126-Ubuntu SMP Wed Oct 21 09:40:11 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

sudosammy avatar Nov 16 '20 11:11 sudosammy

Any update on fixing this? I'm having the same issue with a similar setup...

K3das avatar Sep 10 '22 00:09 K3das

I found gVisor even more restrictive now, I can SSH to a container but executing any sort of basic command fails.

runsc --version
runsc version release-20220905.0
spec: 1.0.2-dev

image (1)

This is in docker Docker version 20.10.18, build b40c2f6

sudosammy avatar Sep 16 '22 15:09 sudosammy

Here's a simple test setup. Keen to know if other people exhibit the same behaviour as me.

Dockerfile

FROM alpine:latest

RUN apk add --no-cache
RUN apk add openssh supervisor bash

# create a new user and group
RUN adduser -S -s /bin/bash -D user
RUN echo "user:toor" | chpasswd

# change ssh port 2222
sed -i -e "/Port /c\Port 2222" /etc/ssh/sshd_config

# move supervisor config and lock to root
COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
RUN chmod 400 /etc/supervisor/conf.d/supervisord.conf

# move start script and lock to root
COPY start.sh /root/start.sh
RUN chmod 700 /root/start.sh

CMD ["/root/start.sh"]

start.sh

#!/bin/sh
# fix sshd: no hostkeys available -- exiting.
/usr/bin/ssh-keygen -A

# run sshd
/usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf

supervisord.conf

[supervisord]
nodaemon=true
user=root

[program:sshd]
command=/usr/sbin/sshd -D

Test with:

ssh user@<docker ip> -p 2222 password: toor

sudosammy avatar Sep 16 '22 15:09 sudosammy

I had the same issue, it was patched in #7943 but the latest release was built before that

K3das avatar Sep 16 '22 15:09 K3das

Hmm, I just built from the master branch but unfortunately still having the issue

sudosammy avatar Sep 16 '22 15:09 sudosammy

The issue of processes getting stopped in PTYs? I'm running it right now on with a Ubuntu container (ubuntu:latest unminimized) and it's working fine, the only issue is control characters.

$ runsc --version
runsc version release-20220905.0-19-gecda533559da
spec: 1.0.2-dev

Interestingly in a PTY spawned by docker exec (docker exec -it container bash) control characters do work, but not when they're spawned by sshd

K3das avatar Sep 16 '22 18:09 K3das

SIGINT doesn't appear to work when using socat to spawn an interactive shell:

gvisor: socat UNIX-LISTEN:/path/shell,forever,fork exec:'bash -li',pty,stderr,setsid,sigint,sane outside: socat STDIN,raw,echo=0 UNIX-CONNECT:/path/shell

upon using ctrl+c in socat outside of gvisor:

I0222 18:02:54.109975       1 strace.go:611] [   5:   5] socat X select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [], 0x7fdcad891998 [], null) = 1 (0x1) (3.57982355s)
I0222 18:02:54.110068       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110111       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (7.905µs)
I0222 18:02:54.110142       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110183       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (2.234µs)
I0222 18:02:54.110219       1 strace.go:567] [   5:   5] socat E read(0x6 socket:[4], 0x7fb753b0e000, 0x2000)
I0222 18:02:54.110254       1 strace.go:605] [   5:   5] socat X read(0x6 socket:[4], 0x7fb753b0e000 "\x03", 0x2000) = 1 (0x1) (12.393µs)
I0222 18:02:54.110280       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110301       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.943µs)
I0222 18:02:54.110327       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110347       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.673µs)
I0222 18:02:54.110375       1 strace.go:567] [   5:   5] socat E write(0x5 /dev/pts/ptmx, 0x7fb753b0e000 "\x03", 0x1)
I0222 18:02:54.110403       1 strace.go:605] [   5:   5] socat X write(0x5 /dev/pts/ptmx, ..., 0x1) = 1 (0x1) (9.468µs)
I0222 18:02:54.110426       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110446       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.773µs)
I0222 18:02:54.110470       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110489       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.432µs)
I0222 18:02:54.110482       1 strace.go:614] [   6:   6] bash X pselect6(0x1, 0x7f5c25d42a68 [0], null, null, null, 0x7f5c25d429b0 [SIGABRT SIGBUS SIGFPE SIGSEGV SIGUSR2 SIGPIPE SIGALRM SIGCONT SIGTSTP SIGTTIN SIGURG SIGXFSZ SIGVTALRM SIGIO SIGSYS 32 33 36 37 38 39 41 42 43 44 45 46 47]) = 1 (0x1) (3.580768005s)
I0222 18:02:54.110519       1 strace.go:573] [   5:   5] socat E select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [5], 0x7fdcad891998 [], null)
I0222 18:02:54.110536       1 strace.go:611] [   5:   5] socat X select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [5], 0x7fdcad891998 [], null) = 1 (0x1) (5.831µs)
I0222 18:02:54.110551       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110549       1 strace.go:567] [   6:   6] bash E read(0x0 /dev/pts/0, 0x7f5c25d42a67, 0x1)
I0222 18:02:54.110579       1 strace.go:605] [   6:   6] bash X read(0x0 /dev/pts/0, 0x7f5c25d42a67 "\x03", 0x1) = 1 (0x1) (3.747µs)
I0222 18:02:54.110607       1 strace.go:567] [   6:   6] bash E writev(0x2 /dev/pts/0, 0x7f5c25d42a70 {base=0x7f79d3641eb8, len=0}, {base=0x7f5c25d42adf, len=1, "\a"}, 0x2)
I0222 18:02:54.110625       1 strace.go:605] [   6:   6] bash X writev(0x2 /dev/pts/0, ..., 0x2) = 1 (0x1) (3.898µs)
I0222 18:02:54.110562       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.062µs)
I0222 18:02:54.110645       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110657       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.253µs)
I0222 18:02:54.110660       1 strace.go:576] [   6:   6] bash E pselect6(0x1, 0x7f5c25d42a68 [0], null, null, null, 0x7f5c25d429b0 [SIGABRT SIGBUS SIGFPE SIGSEGV SIGUSR2 SIGPIPE SIGALRM SIGCONT SIGTSTP SIGTTIN SIGURG SIGXFSZ SIGVTALRM SIGIO SIGSYS 32 33 36 37 38 39 41 42 43 44 45 46 47])
I0222 18:02:54.110671       1 strace.go:573] [   5:   5] socat E select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [], 0x7fdcad891998 [], null)
I0222 18:02:54.110685       1 strace.go:611] [   5:   5] socat X select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [], 0x7fdcad891998 [], null) = 1 (0x1) (2.996µs)
I0222 18:02:54.110699       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110715       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.313µs)
I0222 18:02:54.110729       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110741       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (862ns)
I0222 18:02:54.110754       1 strace.go:567] [   5:   5] socat E read(0x5 /dev/pts/ptmx, 0x7fb753b0e000, 0x2000)
I0222 18:02:54.110767       1 strace.go:605] [   5:   5] socat X read(0x5 /dev/pts/ptmx, 0x7fb753b0e000 "\a", 0x2000) = 1 (0x1) (1.653µs)
I0222 18:02:54.110779       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110790       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad890e90, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (942ns)
I0222 18:02:54.110803       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110814       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (781ns)
I0222 18:02:54.110826       1 strace.go:567] [   5:   5] socat E write(0x6 socket:[4], 0x7fb753b0e000 "\a", 0x1)
I0222 18:02:54.110843       1 strace.go:605] [   5:   5] socat X write(0x6 socket:[4], ..., 0x1) = 1 (0x1) (7.063µs)
I0222 18:02:54.110858       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110869       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891380, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.102µs)
I0222 18:02:54.110882       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110894       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (852ns)
I0222 18:02:54.110907       1 strace.go:573] [   5:   5] socat E select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [6], 0x7fdcad891998 [], null)
I0222 18:02:54.110926       1 strace.go:611] [   5:   5] socat X select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [6], 0x7fdcad891998 [], null) = 1 (0x1) (8.716µs)
I0222 18:02:54.110940       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110951       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (1.002µs)
I0222 18:02:54.110964       1 strace.go:576] [   5:   5] socat E recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null)
I0222 18:02:54.110976       1 strace.go:614] [   5:   5] socat X recvfrom(0x3 socket:[5], 0x7fdcad891420, 0x207, 0x40, 0x0, null) = 0 (0x0) errno=11 (request would block) (751ns)
I0222 18:02:54.110989       1 strace.go:573] [   5:   5] socat E select(0x7, 0x7fdcad891898 [5 6], 0x7fdcad891918 [], 0x7fdcad891998 [], null)

ghost avatar Feb 22 '23 23:02 ghost

https://github.com/google/gvisor/pull/8562

Fixes the issue completely. Hopefully gets merged soon.

ghost avatar Feb 23 '23 03:02 ghost

A friendly reminder that this issue had no activity for 120 days.

github-actions[bot] avatar Sep 14 '23 00:09 github-actions[bot]

#8562 was merged.

ayushr2 avatar Sep 14 '23 04:09 ayushr2