FelipeMdeO opened a new pull request, #3648: URL: https://github.com/apache/nuttx-apps/pull/3648
## Summary Dropbear reaps the per-session NSH task with `waitpid()` in `dropbear_nshsession.c`. Without `CONFIG_SCHED_CHILD_STATUS` the kernel does not retain the child exit status, so `waitpid()` returns `ECHILD` right after authentication and the interactive session never starts (`NSH session wait failed: Unknown error 10`). The issue was reported here: https://github.com/apache/nuttx/pull/19209 Depend on `SCHED_HAVE_PARENT` (required by `SCHED_CHILD_STATUS`) and select `SCHED_CHILD_STATUS` so any Dropbear build gets a working interactive session. ## Impact Kconfig-only, 2 lines. Fixes interactive SSH sessions for `NETUTILS_DROPBEAR`. No dependency on other in-flight work. ## Testing Built `sim:dropbear` (nuttx master + this change) and connected over SSH: on device side: ➜ ~ sudo setcap cap_net_admin+ep /home/felipe-moura/nuttx-space/pr-pure-test/nuttx/nuttx [sudo] password for felipe-moura: ``` ➜ ~ cd /home/felipe-moura/nuttx-space/pr-pure-test/nuttx ./nuttx dropbear [6:100] NuttShell (NSH) NuttX-13.0.0 nsh> [6] Jun 01 00:00:00 using NuttX passwd auth at /tmp/passwd dropbear: listening on port 2222 useradd felipe test1234 nsh> [6] Jun 01 00:00:24 connection from 10.0.1.1:54398 [6] Jun 01 00:00:33 Password auth succeeded for 'felipe' from 10.0.1.1:54398 [6] Jun 01 00:00:33 NSH PTY session started ls /: bin/ dev/ etc/ proc/ tmp/ var/ nsh> poweroff nsh: poweroff: command not found nsh> ``` On host side: ``` ➜ ~ sudo ip addr add 10.0.1.1/24 dev tap0 sudo ip link set tap0 up [sudo] password for felipe-moura: ➜ ~ ssh-keygen -R '[10.0.1.2]:2222' ssh -p 2222 [email protected] # Host [10.0.1.2]:2222 found: line 9 /home/felipe-moura/.ssh/known_hosts updated. Original contents retained as /home/felipe-moura/.ssh/known_hosts.old The authenticity of host '[10.0.1.2]:2222 ([10.0.1.2]:2222)' can't be established. ECDSA key fingerprint is SHA256:wRi61vyuX697dPhP5kny+tVZ1gyIgS7qgQ3s23PrQOk. This key is not known by any other names. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '[10.0.1.2]:2222' (ECDSA) to the list of known hosts. [email protected]'s password: nsh> ls /: bin/ dev/ etc/ proc/ tmp/ var/ nsh> ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
