orderly_poweroff is trying to poweroff platform by two steps:
step 1: Call userspace application to poweroff
step 2: If userspace poweroff fail, then do a force power off if force param is
set.
The bug here is, step 1 is always successful with param UMH_NO_WAIT,
should change to UMH_WAIT_EXEC which will monitor whether user application
successful run.
Change-Id: I2f9ebbb90c0c2443780080ec9507c8d004e5da74
Signed-off-by: Feng Hong <hongf...@marvell.com>
Acked-by: Kees Cook <keesc...@chromium.org>
---
kernel/sys.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/sys.c b/kernel/sys.c
index 241507f..a624d4c 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2204,7 +2204,7 @@ static int __orderly_poweroff(void)
return -ENOMEM;
}
- ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_NO_WAIT,
+ ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC,
NULL, argv_cleanup, NULL);
if (ret == -ENOMEM)
argv_free(argv);
--
1.7.0.4
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