linux-kernel - [PATCH 3/3] exec: proc_exec_connector() should be called only once

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Date:	Thu, 1 Aug 2013 21:05:16 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Zach Levis <zml@...ux.vnet.ibm.com>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Evgeniy Polyakov <zbr@...emap.net>,
	Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] exec: proc_exec_connector() should be called only once

A separate one-liner with the minor fix.

PROC_EVENT_EXEC reports the "exec" event, but this message
is sent at least twice if search_binary_handler() is called
by ->load_binary() recursively, say, load_script().

Move it to exec_binprm(), this is "depth == 0" code too.

Signed-off-by: Oleg Nesterov <oleg@...hat.com>
---
 fs/exec.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/exec.c b/fs/exec.c
index f32079c..ad7d624 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1404,7 +1404,6 @@ int search_binary_handler(struct linux_binprm *bprm)
 				if (bprm->file)
 					fput(bprm->file);
 				bprm->file = NULL;
-				proc_exec_connector(current);
 				return retval;
 			}
 			read_lock(&binfmt_lock);
@@ -1455,6 +1454,7 @@ static int exec_binprm(struct linux_binprm *bprm)
 		trace_sched_process_exec(current, old_pid, bprm);
 		ptrace_event(PTRACE_EVENT_EXEC, old_vpid);
 		current->did_exec = 1;
+		proc_exec_connector(current);
 	}
 
 	return ret;
-- 
1.5.5.1

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