[PATCH 3.11 065/131] staging: binder: Fix death notifications

From: Luis Henriques
Date: Wed Mar 05 2014 - 10:13:09 EST


3.11.10.6 -stable review patch. If anyone has any objections, please let me know.

------------------

From: =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@xxxxxxxxxxx>

commit e194fd8a5d8e0a7eeed239a8534460724b62fe2d upstream.

The change (008fa749e0fe5b2fffd20b7fe4891bb80d072c6a) that moved the
node release code to a separate function broke death notifications in
some cases. When it encountered a reference without a death
notification request, it would skip looking at the remaining
references, and therefore fail to send death notifications for them.

Cc: Colin Cross <ccross@xxxxxxxxxxx>
Cc: Android Kernel Team <kernel-team@xxxxxxxxxxx>
Signed-off-by: Arve HjÃnnevÃg <arve@xxxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
Signed-off-by: Jeremy Compostella <jeremy.compostella@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
drivers/staging/android/binder.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 119d486..8b986af 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -2903,7 +2903,7 @@ static int binder_node_release(struct binder_node *node, int refs)
refs++;

if (!ref->death)
- goto out;
+ continue;

death++;

@@ -2916,7 +2916,6 @@ static int binder_node_release(struct binder_node *node, int refs)
BUG();
}

-out:
binder_debug(BINDER_DEBUG_DEAD_BINDER,
"node %d now dead, refs %d, death %d\n",
node->debug_id, refs, death);
--
1.9.0

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