[ 158.2876916] panic: kernel diagnostic assertion "dev->dv_detaching == curlwp" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/kern/subr_autoconf.c", line 2176 
[ 158.3032481] cpu0: Begin traceback...
[ 158.3076600] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
[ 158.3276666] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x34c4
[ 158.3476641] config_detach_commit() at netbsd:config_detach_commit+0x9f sys/kern/subr_autoconf.c:2176
[ 158.3676626] cdev_detached() at netbsd:cdev_detached+0x155 sys/kern/subr_devsw.c:1383
[ 158.3776621] vdevgone() at netbsd:vdevgone+0x1b8 sys/kern/vfs_subr.c:524
[ 158.3976619] audiodetach() at netbsd:audiodetach+0xaa sys/dev/audio/audio.c:1371
[ 158.4176661] config_detach() at netbsd:config_detach+0x38e sys/kern/subr_autoconf.c:2037
[ 158.4376677] config_detach_children() at netbsd:config_detach_children+0xda sys/kern/subr_autoconf.c:2195
[ 158.4676620] pad_detach() at netbsd:pad_detach+0x70 sys/dev/pad/pad.c:251
[ 158.4876640] config_detach() at netbsd:config_detach+0x38e sys/kern/subr_autoconf.c:2037
[ 158.5176674] fops_pad_close() at netbsd:fops_pad_close+0x86 pad_close sys/dev/pad/pad.c:423 [inline]
[ 158.5176674] fops_pad_close() at netbsd:fops_pad_close+0x86 sys/dev/pad/pad.c:433
[ 158.5376631] closef() at netbsd:closef+0x152 sys/kern/kern_descrip.c:832
[ 158.5676635] fd_free() at netbsd:fd_free+0x528 sys/kern/kern_descrip.c:1571
[ 158.5876634] exit1() at netbsd:exit1+0x306 sys/kern/kern_exit.c:301
[ 158.6076639] sigexit() at netbsd:sigexit+0x63b sys/kern/kern_sig.c:2315
[ 158.6476646] postsig() at netbsd:postsig+0x66b sys/kern/kern_sig.c:2166
[ 158.6676635] lwp_userret() at netbsd:lwp_userret+0x435 sys/kern/kern_lwp.c:1645
[ 158.6976626] mi_userret() at netbsd:mi_userret+0x3e2 x86_curlwp sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:68 [inline]
[ 158.6976626] mi_userret() at netbsd:mi_userret+0x3e2 KPREEMPT_DISABLE sys/sys/lwp.h:542 [inline]
[ 158.6976626] mi_userret() at netbsd:mi_userret+0x3e2 sys/sys/userret.h:97
[ 158.7176653] syscall() at netbsd:syscall+0x323 sys/arch/x86/x86/syscall.c:92
[ 158.7287118] --- syscall (number 5075 via SYS_syscall) ---
[ 158.7405173] netbsd:syscall+0x323:
[ 158.7486447] cpu0: End traceback...
[ 158.7486447] fatal breakpoint trap in supervisor mode
[ 158.7577271] trap type 1 code 0 rip 0xffffffff80220a4d cs 0x8 rflags 0x282 cr2 0x63c220 ilevel 0 rsp 0xffffaa81a6cec0e0
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6cebc00
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ceb720
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ceb240
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6cead60
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6cea880
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6cea3a0
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce9ec0
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce99e0
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce9500
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce9020
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce8b40
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce8660
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce8180
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0
[ 158.7683867] uvm_fault(0xffffaa8012c86e20, 0xffff900000000000, 1) -> e
[ 158.7683867] fatal page fault in supervisor mode
[ 158.7683867] trap type 6 code 0 rip 0xffffffff81b8256b cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffaa81a6ce7ca0
[ 158.7683867] curlwp 0xffffaa80142df200 pid 5075.5075 lowest kstack 0xffffaa81a6ce52c0
kernel: page fault trap, code=0