kern/58584: bge(4) locking issues

[campbell+netbsd%mumble.net@localhost]

>Number:         58584
>Category:       kern
>Synopsis:       bge(4) locking issues
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 12 15:10:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10, ...
>Organization:
The NetBGE(4) Foundlockation
>Environment:
>Description:
1. missing mutex_obj_free
2. missing callout_destroy
3. lock taken in interrupt context must not be taken across bge_init/stop -- nix `core' lock, replace by mcast lock for SIOCADDMULTI/SIOCDELMULTI and multicast filter updates, make it IPL_SOFTNET instead of IPL_NONE
4. SIOCIFMEDIA takes core lock, must take intr lock (= mii/ifmedia lock) instead
5. no need for bge_stopping, bge_detaching flags

and possibly other issues
>How-To-Repeat:
code inspection
>Fix:
Yes, please!