Re: [PATCH] wifi: ath11k: fix warning when unbinding

[Baochen Qiang <baochen.qiang@oss.qualcomm.com>]

On 4/29/2026 1:14 PM, Jose Ignacio Tornos Martinez wrote:
> Hello Baochen,
> 
> As I try to comment in the commit description, the warning is not at
> the intialization, but comes up when the device is unbinded after a
> problem at the initialization stage, because due to the problem the
> buffers were released (probe). Later after the problem, if the unbinding
> is commanded the buffers are released again.
> Setting to NUll after releasing avoids the double free.
> 

OK, seems the first release happens during the error handling path of
ath11k_core_qmi_firmware_ready().

> The easiest way to reproduce it is to run in a VM the default upstream
> kernel (that is always failing on VMs) and just unbind the device
> (ath11k_pci).
> 
> The same problem was fixed by me for ath12k driver here ca68ce0d9f4b
> ("wifi: ath12k: fix warning when unbinding"), and I have seen the same problem
> is also happening for ath11k driver.
> 
> Thanks
> 
> Best regards
> José Ignacio
>