Re: [net-next,v1] net: e1000e: solve insmod 'Unknown symbol mutex_lock' error

On 9/17/2021 7:11 AM, Hao Chen wrote:

After I turn on the CONFIG_LOCK_STAT=y, insmod e1000e.ko will report:
[    5.641579] e1000e: Unknown symbol mutex_lock (err -2)
[   90.775705] e1000e: Unknown symbol mutex_lock (err -2)
[  132.252339] e1000e: Unknown symbol mutex_lock (err -2)

This problem fixed after include <linux/mutex.h>.

Thanks for taking the time to send a patch.
Why do you think including a file will fix this? That error is usually
the user's fault for trying to use insmod which doesn't check module
dependencies.

The advice I usually give is to try modprobe instead, does the problem
still occur without this patch and just using modprobe?