Bug#25070: dpkg-source won't work under at

[Ian Jackson <ian@chiark.greenend.org.uk>]

Lars Wirzenius writes ("Re: Bug#25070: dpkg-source won't work under at "):
> Ian Jackson:
> > Urgh.  Can you run it under strace, please ?
> 
> The strace (with -f) output (40 kB) is at
> http://www.iki.fi/liw/debian/dpkg-source.strace.

Has something set SIGCHLD to SIG_IGN ?  Look at this, near the end of
the trace:

23024 _exit(0)                          = ?
23020 <... read resumed> "", 4096)      = 0
23020 --- SIGCHLD (Child exited) ---
23020 close(4)                          = 0
23020 munmap(0x4002b000, 4096)          = 0
23020 sigaction(SIGHUP, {SIG_IGN}, {SIG_DFL}) = 0
23020 sigaction(SIGINT, {SIG_IGN}, {SIG_DFL}) = 0
23020 sigaction(SIGQUIT, {SIG_IGN}, {SIG_DFL}) = 0
23020 wait4(23024, 0xbffff644, 0, NULL) = -1 ECHILD (No child processes)

Either something has been messing with SIGCHLD (perhaps at is broken)
or your kernel has a bug.

Ian.


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