Messages in this thread | | | Date | Thu, 19 May 2022 08:48:44 -0700 | Subject | Re: [PATCH net v2] net: wireless: marvell: mwifiex: fix sleep in atomic context bugs | From | Jeff Johnson <> |
| |
On 5/19/2022 8:14 AM, duoming@zju.edu.cn wrote: > Hello, > > On Thu, 19 May 2022 17:58:47 +0300 Kalle Valo wrote: > >>> There are sleep in atomic context bugs when uploading device dump >>> data on usb interface. The root cause is that the operations that >>> may sleep are called in fw_dump_timer_fn which is a timer handler. >>> The call tree shows the execution paths that could lead to bugs: >>> >>> (Interrupt context) >>> fw_dump_timer_fn >>> mwifiex_upload_device_dump >>> dev_coredumpv(..., GFP_KERNEL)
just looking at this description, why isn't the simple fix just to change this call to use GFP_ATOMIC?
| |