[PATCH 0/1][SRU][B][OEM-B]iwlwifi fails to work on 16 or more
AceLan Kao
acelan.kao at canonical.com
Mon Nov 26 08:22:05 UTC 2018
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(-)
--
2.17.1
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