kern/53259: opera causes kernel panic

[n54%gmx.com@localhost]

>Number:         53259
>Category:       kern
>Synopsis:       opera causes kernel panic
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu May 03 23:45:00 +0000 2018
>Originator:     Kamil Rytarowski
>Release:        NetBSD/amd64 8.99.14
>Organization:
TNF
>Environment:
NetBSD chieftec 8.99.14 NetBSD 8.99.14 (GENERIC) #36: Tue May  1 18:02:53 CEST 2018  root@chieftec:/public/netbsd-root/sys/arch/amd64/compile/GENERIC amd64
>Description:
opera-12.16         Standards-compliant graphical Web browser

An attempt to run opera causes kernel panic always.
>How-To-Repeat:
[  107.864737] WARNING: SPL NOT LOWERED ON SYSCALL 0 6 EXIT 6 5
[  107.864737] panic: assert_sleepable: pserialize caller=0xffffffff809e038e
[  107.864737] cpu0: Begin traceback...
[  107.864737] vpanic() at netbsd:vpanic+0x19a
[  107.864737] snprintf() at netbsd:snprintf
[  107.864737] assert_sleepable() at netbsd:assert_sleepable+0xc3
[  107.864737] kauth_cred_free() at netbsd:kauth_cred_free+0x2f
[  107.864737] soclose() at netbsd:soclose+0x206
[  107.874725] soo_close() at netbsd:soo_close+0x1a
[  107.874725] closef() at netbsd:closef+0x79
[  107.874725] fd_close() at netbsd:fd_close+0x623
[  107.874725] sys_close() at netbsd:sys_close+0x20
[  107.874725] linux_syscall() at netbsd:linux_syscall+0xc1
[  107.874725] cpu0: End traceback...
[  107.874725] fatal breakpoint trap in supervisor mode
[  107.874725] trap type 1 code 0 rip 0xffffffff8021eb75 cs 0x8 rflags 0x202 cr2 0x1ce8648 ilevel 0 rsp 0xffff80013fb0cd80
[  107.874725] curlwp 0xffffe403f7fe40e0 pid 609.609 lowest kstack 0xffff80013fb092c0

[  107.874725] dumping to dev 20,0 (offset=193655, size=4170097):
[  107.874725] dump device not ready
>Fix:
N/A