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Commit 43b00fdb authored by Jeff Dike's avatar Jeff Dike Committed by Linus Torvalds
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[PATCH] uml: block SIGWINCH in ptrace tester child 



The process that UML uses to probe the host's ptrace capabilities can (rarely)
receive a SIGWINCH, confusing the parent.  This fixes that by blocking
SIGWINCH.

Signed-off-by: default avatarJeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 14d9ead0

arch/um/os-Linux/start_up.c

+1 −0
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ static int ptrace_child(void *arg) 
	int pid = os_getpid(), ppid = getppid();

	int sc_result;



	change_sig(SIGWINCH, 0);

	if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){

		perror("ptrace");

		os_kill_process(pid, 0);