kern/58382: url(4): kernel panic after ifconfig url0 up on NetBSD 10.0

[rspmn%arcor.de@localhost]

>Number:         58382
>Category:       kern
>Synopsis:       url(4): kernel panic after ifconfig url0 up on NetBSD 10.0
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 30 16:05:00 +0000 2024
>Originator:     Reinhard Speyerer
>Release:        10.0
>Organization:
>Environment:
NetBSD nena 10.0 NetBSD 10.0 (GENERIC) #0: Thu Mar 28 08:33:33 UTC 2024  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/i386/compile/GENERIC i386
>Description:
A Sitecom USB Ethernet adapter (USB id 0bda:8150) handled by url(4) causes a kernel panic on NetbSD 10.0 after executing ifconfig url0 up.

This problem did not occur on NetBSD 9.3.

>How-To-Repeat:
Connect a Sitecom USB Ethernet adapter handled by url(4) to a USB port and execute
# ifconfig url0 up
which causes this kernal panic:

Jun 29 23:52:38 nena /netbsd: [ 144.2448047] uvm_fault(0xc2e79a14, 0xc000, 2) -> 0xe
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] fatal page fault in supervisor mode
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] trap type 6 code 0x2 eip 0xc01253ed cs 0x8 eflags 0x10246 cr2 0xc2af ilevel 0x8 esp 0xc03dbb96
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] curlwp 0xc308d940 pid 842 lid 842 lowest kstack 0xdb4c62c0
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] panic: trap
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] cpu0: Begin traceback...
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] vpanic(c1186f58,db4c7700,db4c77bc,c012fed8,c1186f58,db4c77c8,db4c77c8,34a,db4c62c0,10246) at netbsd:vpanic+0x196
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] panic(c1186f58,db4c77c8,db4c77c8,34a,db4c62c0,10246,c2af,8,c03dbb96,c2e79a14) at netbsd:panic+0x18
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] trap() at netbsd:trap+0xd51
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] --- trap (number 6) ---
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] mutex_exit(c2e6fc24,c2e6fc24,db4c7884,c2e6fc00,db4c7884,80906931,c2e6fc24,db4c7884,db4c7924,c0d5161e) at netbsd:mutex_exit+0xd
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] usbnet_if_ioctl(c2e6fc24,80906931,db4c7884,c37fcd84,c310d684,db4c796c,c0d849e2,181c,0,20002ff) at netbsd:usbnet_if_ioctl+0xa3
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] if_mcast_op(c2e6fc24,80906931,db4c7940,c3e1c7bc,db4c79d4,181c,0,20002ff,0,1000000) at netbsd:if_mcast_op+0x53
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] in6_addmulti(db4c7a0c,c2e6fc24,db4c79d4,22,c37fcd84,db4c7ae0,c0a03bcc,c2e6fc24,db4c7a0c,db4c79d4) at netbsd:in6_addmulti+0x168
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] in6_joingroup(c2e6fc24,db4c7a0c,db4c79d4,22,c3022e40,db4c79d8,c0c49fa9,1,181,c37fce84) at netbsd:in6_joingroup+0x41
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] in6_update_ifa1(0,1,c2e6fc24,0,db4c7c60,c0a0763a,c2e6fc24,db4c7bd0,1,0) at netbsd:in6_update_ifa1+0x9a0
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] in6_update_ifa(c2e6fc24,db4c7bd0,1,0,db4c7bc8,8,0,c09a13c1,c3022740,db4c7bb0) at netbsd:in6_update_ifa+0x31
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] in6_ifattach(c2e6fc24,0,c14a14c0,db4c7c88,c0d4bd4f,c2e6fc24,c376bb80,c2e6fc24,db4c7cbc,c0d4ccd1) at netbsd:in6_ifattach+0x41b
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] in6_if_up(c2e6fc24,c376bb80,c2e6fc24,db4c7cbc,c0d4ccd1,4,db4c7ca8,c0de3313,c3e05340,c3e05340) at netbsd:in6_if_up+0x1a
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] if_up_locked(4,db4c7ca8,c0de3313,c3e05340,c3e05340,c3e05340,db4c7ce4,c0c5c028,c376bb80,c2e6fc24) at netbsd:if_up_locked+0x4d
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] ifioctl_common(c2e6fc24,80906910,c376bb80,1,c2e817c0,c2e6fc24,db4c7d04,c03af3ec,c2e6fc24,80906910) at netbsd:ifioctl_common+0x47f
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] ether_ioctl(c2e6fc24,80906910,c376bb80,c2e6fc00,c376bb80,c308d940,c2e6fc24,80906910,db4c7e20,c0d50088) at netbsd:ether_ioctl+0x167
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] usbnet_if_ioctl(c2e6fc24,80906910,c376bb80,14,c2e6fc24,80906910,0,8802,c376bb80,0) at netbsd:usbnet_if_ioctl+0x43
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] doifioctl(c375e7bc,80906910,c376bb80,c308d940,c0cb2e95,c2ac8700,1,0,c376bb80,ffffffff) at netbsd:doifioctl+0x304
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] soo_ioctl(c36208c0,80906910,c376bb80,0,0,c36208c0,c2a898f0,c2a9b17c,c36208c0,c376bb80) at netbsd:soo_ioctl+0x180
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] sys_ioctl(c308d940,db4c7f68,db4c7f60,c2e7a400,0,36,db4c7f60,db4c7f68,0,0) at netbsd:sys_ioctl+0x35b
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] syscall() at netbsd:syscall+0x1d6
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] --- syscall (number 54) ---
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] b1ee7df7:
Jun 29 23:52:38 nena /netbsd: [ 144.2448047] cpu0: End traceback...

>Fix: