This is a note to let you know that I've just added the patch titled
reiserfs: fix "new_insert_key may be used uninitialized ..."
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
reiserfs-fix-new_insert_key-may-be-used-uninitialized.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0a11b9aae49adf1f952427ef1a1d9e793dd6ffb6 Mon Sep 17 00:00:00 2001
From: Jeff Mahoney <jeffm@xxxxxxxx>
Date: Tue, 2 Aug 2016 14:05:33 -0700
Subject: reiserfs: fix "new_insert_key may be used uninitialized ..."
From: Jeff Mahoney <jeffm@xxxxxxxx>
commit 0a11b9aae49adf1f952427ef1a1d9e793dd6ffb6 upstream.
new_insert_key only makes any sense when it's associated with a
new_insert_ptr, which is initialized to NULL and changed to a
buffer_head when we also initialize new_insert_key. We can key off of
that to avoid the uninitialized warning.
Link: http://lkml.kernel.org/r/5eca5ffb-2155-8df2-b4a2-f162f105efed@xxxxxxxx
Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/reiserfs/ibalance.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/reiserfs/ibalance.c
+++ b/fs/reiserfs/ibalance.c
@@ -1153,8 +1153,9 @@ int balance_internal(struct tree_balance
insert_ptr);
}
- memcpy(new_insert_key_addr, &new_insert_key, KEY_SIZE);
insert_ptr[0] = new_insert_ptr;
+ if (new_insert_ptr)
+ memcpy(new_insert_key_addr, &new_insert_key, KEY_SIZE);
return order;
}
Patches currently in stable-queue which might be from jeffm@xxxxxxxx are
queue-4.4/reiserfs-fix-new_insert_key-may-be-used-uninitialized.patch
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