linux-kernel - [PATCH 6/6] call_usermodehelper: UMH_WAIT_EXEC ignores kernel

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Date:	Mon, 15 Mar 2010 20:49:11 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, andi@...stfloor.org,
	David Howells <dhowells@...hat.com>,
	Neil Horman <nhorman@...driver.com>,
	Roland McGrath <roland@...hat.com>
Subject: [PATCH 6/6] call_usermodehelper: UMH_WAIT_EXEC ignores
	kernel_thread() failure

UMH_WAIT_EXEC should report the error if kernel_thread() fails, like
UMH_WAIT_PROC does.

Signed-off-by: Oleg Nesterov <oleg@...hat.com>
---

 kernel/kmod.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- 34-rc1/kernel/kmod.c~6_UMH_WAIT_EXEC	2010-03-15 20:32:23.000000000 +0100
+++ 34-rc1/kernel/kmod.c	2010-03-15 20:37:07.000000000 +0100
@@ -235,10 +235,10 @@ static void __call_usermodehelper(struct
 	case UMH_WAIT_PROC:
 		if (pid > 0)
 			break;
-		sub_info->retval = pid;
 		/* FALLTHROUGH */
-
 	case UMH_WAIT_EXEC:
+		if (pid < 0)
+			sub_info->retval = pid;
 		complete(sub_info->complete);
 	}
 }

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