ACK: [PATCH 0/1][SRU][B][OEM-B]iwlwifi fails to work on 16 or more

Kai Heng Feng kai.heng.feng at canonical.com
Thu Nov 29 08:20:53 UTC 2018



> On Nov 26, 2018, at 4:22 PM, AceLan Kao <acelan.kao at canonical.com> wrote:
> 
> BugLink: https://bugs.launchpad.net/bugs/1805088
> 
> [Impact]
> Got dmesg kernel BUG while loading iwlwifi driver on machines
> which has 16 or more logical CPUs
>   kernel: RIP: 0010:iwl_pcie_rxq_alloc_rbs+0x1d0/0x1f0 [iwlwifi]
> And it leads to wifi can't scan any APs, and leads to system hangs
> while suspending.
> 
> [Fix]
> Below commit contained in v4.17 fix the issue.
>   ab1068d6866e iwlwifi: pcie: compare with number of IRQs requested for,
>                not number of CPUs
> 
> [Regression Potential]
> Low.
> 
> [Misc]
> The commit is in v4.17, so ubuntu cosmic is safe.
> And ubuntu xenial is safe, too, since the commit which introduces this
> issue isn't contained in v4.4 kernel
>   2e5d4a8f61dc iwlwifi: pcie: Add new configuration to enable MSIX
> 
> Hao Wei Tee (1):
>  iwlwifi: pcie: compare with number of IRQs requested for, not number
>    of CPUs
> 
> drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)

Acked-by: Kai-Heng Feng <kai.heng.feng at canonical.com>

> 
> -- 
> 2.17.1
> 
> 
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