Re: hang from HUP'ing init in linuxrc

[David S. Miller]

Paul Mackerras writes:
 > What was happening was rather interesting.  The init process was stuck
 > inside prepare_namespace(), in the while loop here (this is lines 749
 > - 751 of init/main.c):
 > 
 > 		pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
 > 		if (pid>0)
 > 			while (pid != wait(&i));
 > 
 ...
 [ no signal delivery due to returning to kernel space, blah blah blah
   :-) ]

For 2.4.x I'd just check for sigpending in this wait loop.

Longer term (ie. 2.5.x and onward) we should look into ideas like those
mentioned by Ben.  I for one would not complain about seeing dhcp
getting removed from the kernel :-)

Later,
David S. Miller
[e-mail]