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Date: Sun, 7 Nov 2010 22:04:43 +0100 (CET) From: Jesper Juhl <jj@...osbits.net> To: linux-usb@...r.kernel.org cc: linux-kernel@...r.kernel.org Subject: [PATCH] UWB: Return UWB_RSV_ALLOC_NOT_FOUND rather than crashing on NULL dereference if kzalloc fails Hi, Crashing on a null pointer deref is never a nice thing to do. It seems to me that it's better to simply return UWB_RSV_ALLOC_NOT_FOUND if kzalloc() fails in uwb_rsv_find_best_allocation(). I may be wrong since I have no way to test this (except compile test) and this is unknown code to me, so please review carefully. Please CC me on replies. Signed-off-by: Jesper Juhl <jj@...osbits.net> --- allocator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/uwb/allocator.c b/drivers/uwb/allocator.c index 436e4f7..e45e673 100644 --- a/drivers/uwb/allocator.c +++ b/drivers/uwb/allocator.c @@ -326,7 +326,8 @@ int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *availab int bit_index; ai = kzalloc(sizeof(struct uwb_rsv_alloc_info), GFP_KERNEL); - + if (!ai) + return UWB_RSV_ALLOC_NOT_FOUND; ai->min_mas = rsv->min_mas; ai->max_mas = rsv->max_mas; ai->max_interval = rsv->max_interval; -- Jesper Juhl <jj@...osbits.net> http://www.chaosbits.net/ Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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