commit ab1068d6866e28bf6427ceaea681a381e5870a4a
Author: Hao Wei Tee <email address hidden>
Date: Tue May 29 10:25:17 2018 +0300
iwlwifi: pcie: compare with number of IRQs requested for, not number of CPUs
When there are 16 or more logical CPUs, we request for
`IWL_MAX_RX_HW_QUEUES` (16) IRQs only as we limit to that number of
IRQs, but later on we compare the number of IRQs returned to
nr_online_cpus+2 instead of max_irqs, the latter being what we
actually asked for. This ends up setting num_rx_queues to 17 which
causes lots of out-of-bounds array accesses later on.
Compare to max_irqs instead, and also add an assertion in case
num_rx_queues > IWM_MAX_RX_HW_QUEUES.
commit ab1068d6866e28b f6427ceaea681a3 81e5870a4a
Author: Hao Wei Tee <email address hidden>
Date: Tue May 29 10:25:17 2018 +0300
iwlwifi: pcie: compare with number of IRQs requested for, not number of CPUs
When there are 16 or more logical CPUs, we request for MAX_RX_ HW_QUEUES` (16) IRQs only as we limit to that number of online_ cpus+2 instead of max_irqs, the latter being what we
`IWL_
IRQs, but later on we compare the number of IRQs returned to
nr_
actually asked for. This ends up setting num_rx_queues to 17 which
causes lots of out-of-bounds array accesses later on.
Compare to max_irqs instead, and also add an assertion in case RX_HW_QUEUES.
num_rx_queues > IWM_MAX_
This fixes https:/ /bugzilla. kernel. org/show_ bug.cgi? id=199551
Fixes: 2e5d4a8f61dc ("iwlwifi: pcie: Add new configuration to enable MSIX")
Signed-off-by: Hao Wei Tee <email address hidden>
Tested-by: Sara Sharon <email address hidden>
Signed-off-by: Luca Coelho <email address hidden>
Signed-off-by: Kalle Valo <email address hidden>