From: Jeff Dike <jdike@addtoit.com>
Date: Thu, 18 Aug 2005 18:24:25 +0000 (-0700)
Subject: [PATCH] uml: fix a crash under screen
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2eaa297ca234eb518673b28dd6f3715d4b292e09;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] uml: fix a crash under screen

Running UML inside a detached screen delivers SIGWINCH when UML is not
expecting it.  This patch ignores them.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c
index 6dd9e5bf18ed..f228f8b54194 100644
--- a/arch/um/kernel/skas/process.c
+++ b/arch/um/kernel/skas/process.c
@@ -61,7 +61,11 @@ void wait_stub_done(int pid, int sig, char * fname)
 
                 CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));
         } while((n >= 0) && WIFSTOPPED(status) &&
-                (WSTOPSIG(status) == SIGVTALRM));
+                ((WSTOPSIG(status) == SIGVTALRM) ||
+		 /* running UML inside a detached screen can cause
+		  * SIGWINCHes
+		  */
+		 (WSTOPSIG(status) == SIGWINCH)));
 
         if((n < 0) || !WIFSTOPPED(status) ||
            (WSTOPSIG(status) != SIGUSR1 && WSTOPSIG(status) != SIGTRAP)){