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| author |   Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2024-09-20 17:44:31 +0300 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2024-11-01 00:06:14 +0100 |
| commit | 6ca2738174e4ee44edb2ab2d86ce74f015a0cc32 (patch) | |
| tree | 1c3efbe45c28d1029026955194b1c488981a6b92 /net/lapb/lapb_timer.c | |
| parent | i3c: master: Fix miss free init_dyn_addr at i3c_master_put_i3c_addrs() (diff) | |
| download | wireguard-linux-6ca2738174e4ee44edb2ab2d86ce74f015a0cc32.tar.xz wireguard-linux-6ca2738174e4ee44edb2ab2d86ce74f015a0cc32.zip | |
i3c: mipi-i3c-hci: Mask ring interrupts before ring stop request
Bus cleanup path in DMA mode may trigger a RING_OP_STAT interrupt when
the ring is being stopped. Depending on timing between ring stop request
completion, interrupt handler removal and code execution this may lead
to a NULL pointer dereference in hci_dma_irq_handler() if it gets to run
after the io_data pointer is set to NULL in hci_dma_cleanup().
Prevent this my masking the ring interrupts before ring stop request.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20240920144432.62370-2-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions