12 May
2021
12 May
'21
9:08 a.m.
On Wed, 12 May 2021 06:43:23 +0200, Chanho Park wrote:
From: eunwoo kim ew.kim@samsung.com
Since snd_pcm_ioctl_sw_params_compat has no runtime variable check, if application call the ioctl after close, it can make kernel crash. So, snd_pcm_ioctl_sw_params_compat needs to check the runtime variable at the beginning of the function.
In principle, you cannot call ioctl for an already closed file. Or do you mean other code path?
Takashi