Messages in this thread | | | Date | Mon, 29 Nov 2021 13:21:05 +0100 | From | Wolfram Sang <> | Subject | Re: [PATCH 3/3] i2c: stm32f7: prevent calling slave handling if no slave running |
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On Wed, Jun 30, 2021 at 04:11:43PM +0200, Alain Volmat wrote: > Slave interrupt handler should only be called if there is actually > a slave registered and running to avoid accessing an invalid pointer. > > Without this commit, an OOPS can be generated due to a NULL ptr dereference > while receiving an IT when there is no master transfer and no slave > running: > - stm32f7_i2c_isr_event > - no master_mode hence calling stm32f7_i2c_slave_isr_event > - access to i2c_dev->slave_running leading to oops due to > slave_running being NULL. > > Fixes: 60d609f30de2 ("i2c: i2c-stm32f7: Add slave support") > > Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Is this one still of interest? You resent patches 1 and 2 but not this one?
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