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dma-buf: free dmabuf->name in dma_buf_release()

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commit d1f37226431f5d9657aa144a40f2383adbcf27e1 upstream.

dma-buf name can be set via DMA_BUF_SET_NAME ioctl, but once set
it never gets freed.

Free it in dma_buf_release().

Fixes: bb2bb90304 ("dma-buf: add DMA_BUF_SET_NAME ioctls")
Reported-by: syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Chenbo Feng <fengc@google.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Chenbo Feng <fengc@google.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191227063204.5813-1-xiyou.wangcong@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Cong Wang 2019-12-26 22:32:04 -08:00 • committed by Greg Kroah-Hartman
commit 08d67499d2
1 changed files with 1 additions and 0 deletions
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1
drivers/dma-buf/dma-buf.c
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@ -108,6 +108,7 @@ static int dma_buf_release(struct inode *inode, struct file *file)
dma_resv_fini(dmabuf->resv);
module_put(dmabuf->owner);
kfree(dmabuf->name);
kfree(dmabuf);
return 0;
}