From: Jarkko Nikula jarkko.nikula@linux.intel.com
[ Upstream commit 45a832f989e520095429589d5b01b0c65da9b574 ]
Do not loop over ring headers in hci_dma_irq_handler() that are not allocated and enabled in hci_dma_init(). Otherwise out of bounds access will occur from rings->headers[i] access when i >= number of allocated ring headers.
Signed-off-by: Jarkko Nikula jarkko.nikula@linux.intel.com Link: https://lore.kernel.org/r/20230921055704.1087277-5-jarkko.nikula@linux.intel... Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i3c/master/mipi-i3c-hci/dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c index af873a9be0507..dd2dc00399600 100644 --- a/drivers/i3c/master/mipi-i3c-hci/dma.c +++ b/drivers/i3c/master/mipi-i3c-hci/dma.c @@ -734,7 +734,7 @@ static bool hci_dma_irq_handler(struct i3c_hci *hci, unsigned int mask) unsigned int i; bool handled = false;
- for (i = 0; mask && i < 8; i++) { + for (i = 0; mask && i < rings->total; i++) { struct hci_rh_data *rh; u32 status;