[   1.5465196] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/kern/vfs_subr.c:793:14, member access within null pointer of type 'struct vnode_impl'

[   1.5604734] cpu0: Begin traceback...
[   1.5635838] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[   1.5858458] isAlreadyReported() at netbsd:isAlreadyReported
[   1.5969724] HandleTypeMismatch.part.1() at netbsd:HandleTypeMismatch.part.1+0x15b
[   1.6192341] HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x7b sys/../common/lib/libc/misc/ubsan.c:408
[   1.6414880] sched_sync() at netbsd:sched_sync+0x50a sys/kern/vfs_subr.c:793
[   1.6414880] cpu0: End traceback...
[   1.6551814] fatal breakpoint trap in supervisor mode
[   1.6551814] trap type 1 code 0 rip 0xffffffff8021dddd cs 0x8 rflags 0x286 cr2 0 ilevel 0 rsp 0xffffb880a69169e0
[   1.6668542] curlwp 0xffff8569dd7e3660 pid 0.55 lowest kstack 0xffffb880a69132c0
Stopped in pid 0.55 (system) at netbsd:breakpoint+0x5:  leave
db{0}>