** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: linux (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1805088
Title:
iwlwifi fails to work on 16 or more logical CPUs machines
Status in HWE Next:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Released
Status in linux-oem source package in Bionic:
Fix Released
Bug description:
[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.
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