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Commit ae65c851 authored by Sherry Yang's avatar Sherry Yang Committed by Greg Kroah-Hartman
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android: binder: Fix null ptr dereference in debug msg 



Don't access next->data in kernel debug message when the
next buffer is null.

Acked-by: default avatarArve Hjønnevåg <arve@android.com>
Signed-off-by: default avatarSherry Yang <sherryy@android.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a0c2baaf

drivers/android/binder_alloc.c

+1 −1
Original line number Diff line number Diff line
@@ -560,7 +560,7 @@ static void binder_delete_free_buffer(struct binder_alloc *alloc, 
		binder_alloc_debug(BINDER_DEBUG_BUFFER_ALLOC,

				   "%d: merge free, buffer %pK do not share page with %pK or %pK\n",

				   alloc->pid, buffer->data,

				   prev->data, next->data);

				   prev->data, next ? next->data : NULL);

		binder_update_page_range(alloc, 0, buffer_start_page(buffer),

					 buffer_start_page(buffer) + PAGE_SIZE,

					 NULL);