This is a note to let you know that I've just added the patch titled
crypto: caam - add allocation failure handling in SPRINTFCAT macro
to the 3.10-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:
crypto-caam-add-allocation-failure-handling-in-sprintfcat-macro.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 27c5fb7a84242b66bf1e0b2fe6bf40d19bcc5c04 Mon Sep 17 00:00:00 2001
From: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
Date: Fri, 18 Apr 2014 13:01:42 +0300
Subject: crypto: caam - add allocation failure handling in SPRINTFCAT macro
From: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
commit 27c5fb7a84242b66bf1e0b2fe6bf40d19bcc5c04 upstream.
GFP_ATOMIC memory allocation could fail.
In this case, avoid NULL pointer dereference and notify user.
Cc: Kim Phillips <kim.phillips@xxxxxxxxxxxxx>
Signed-off-by: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/crypto/caam/error.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/crypto/caam/error.c
+++ b/drivers/crypto/caam/error.c
@@ -16,9 +16,13 @@
char *tmp; \
\
tmp = kmalloc(sizeof(format) + max_alloc, GFP_ATOMIC); \
- sprintf(tmp, format, param); \
- strcat(str, tmp); \
- kfree(tmp); \
+ if (likely(tmp)) { \
+ sprintf(tmp, format, param); \
+ strcat(str, tmp); \
+ kfree(tmp); \
+ } else { \
+ strcat(str, "kmalloc failure in SPRINTFCAT"); \
+ } \
}
static void report_jump_idx(u32 status, char *outstr)
Patches currently in stable-queue which might be from horia.geanta@xxxxxxxxxxxxx are
queue-3.10/crypto-caam-add-allocation-failure-handling-in-sprintfcat-macro.patch
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