Timeout Vs. Winexe

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I use the winexe (a samba-based tool like psexec) to run a command remotely on windows targets. The problem is, sometimes it hangs until interrupted and I’d like to put it in a cron job. So I added a
‘timeout 80’ on the command line that starts a shell script that invokes winexe with the needed parameters. This does prevent the hang, but now every run takes the full 80 seconds to return where it should average 5 or 10 seconds on a normal execution – and it seems to trap normal interrupts until its own timeout is reached.

Timeout seems to return immediately when other commands exit. Am I
missing something obvious that might make it wait in this scenario?

Strace show a loop of these filling the time after I think it has completed:
ioctl(0, SNDCTL_TMR_START or TCSETS, {B38400 opost isig -icanon echo
…}) = ? ERESTARTSYS (To be restarted)
— SIGTTOU (Stopped (tty output)) @ 0 (0) –