Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH 2/2] aio: nullify aio->ring_pages after freeing it | Date | Tue, 19 Nov 2013 17:33:03 -0500 |
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After freeing ring_pages we leave it as is causing a dangling pointer. This has already caused an issue so to help catching any issues in the future NULL it out.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com> --- fs/aio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/aio.c b/fs/aio.c index 8b387a1..d6e8467 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -251,8 +251,10 @@ static void aio_free_ring(struct kioctx *ctx) put_aio_ring_file(ctx); - if (ctx->ring_pages && ctx->ring_pages != ctx->internal_pages) + if (ctx->ring_pages && ctx->ring_pages != ctx->internal_pages) { kfree(ctx->ring_pages); + ctx->ring_pages = NULL; + } } static int aio_ring_mmap(struct file *file, struct vm_area_struct *vma) -- 1.7.10.4
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