On 2/12/2019 6:57 AM, Aaron Blair wrote:
I apologise if my report is lacking in detail; it is my first attempt at
bug/issue reporting in the kernel.
Please follow up if something is missing, or more detail/testing is
required.
It is certainly possible for me to provide more oops reports if
required, as they generally surface at least once a day.
No apologies needed. I am generally happy with kernel log and short
context description.
Thank you.
[1.] Oops - Null pointer dereference in brcm80211/brcmfmac [BCM4350]
[2.] Seemingly randomly, when connected to a wireless network, my laptop
will begin failing to tx/rx data, and begin repeatedly reporting the
following messages in the kernel ring buffer:
```
[18990.872335] brcmfmac: brcmf_cfg80211_get_station: GET STA INFO
failed, -12
[18990.872433] brcmfmac: brcmf_msgbuf_tx_ioctl: Failed to reserve space
in commonring
[18990.872439] brcmfmac: brcmf_cfg80211_get_tx_power: error (-12)
```
The "reserve space" issue has been reported before although I have not
looking into it yet.
Upon trying to rmmod && modload brcmfmac, I receive the oops dump
included below, and am unable to continue using the wireless NIC until I
reboot.
This does not appear to have a pattern, except that it usually happens
at least once throughout a day of work.
It has been happening at least since 4.20.4, but potentially earlier
(this machine wasn't in heavy use before then).
I will look into the NULL pointer access.
Regards,
Arend
