[  42.5979545] panic: kernel diagnostic assertion "!topdown || hint <= orig_hint" failed: file "/syzkaller/managers/ci2-netbsd-kmsan/kernel/sys/uvm/uvm_map.c", line 1801 map=0xfffff00012504c58 hint=0xffffffffff002000 orig_hint=0x20ffe000 length=0x20ffe000 uobj=0x0 uoffset=0xffffffffffffffff align=0 flags=0x80010 entry=0xfffff00012af27c0 (uvm_map_findspace line 1998)
[  42.6079419] cpu1: Begin traceback...
[  42.6279435] vpanic() at netbsd:vpanic+0xc9d
[  42.6779442] kern_assert() at netbsd:kern_assert+0x228
[  42.7279438] uvm_map_findspace() at netbsd:uvm_map_findspace+0x4c8b uvm_findspace_invariants sys/uvm/uvm_map.c:1795 [inline]
[  42.7279438] uvm_map_findspace() at netbsd:uvm_map_findspace+0x4c8b sys/uvm/uvm_map.c:1998
[  42.7679473] uvm_map_prepare() at netbsd:uvm_map_prepare+0xf5e sys/uvm/uvm_map.c:1181
[  42.8179434] uvm_map() at netbsd:uvm_map+0x5f6 sys/uvm/uvm_map.c:1089
[  42.8779424] uvm_mmap() at netbsd:uvm_mmap+0xd2d sys/uvm/uvm_mmap.c:949
[  42.9279434] sys_mmap() at netbsd:sys_mmap+0x16e1 sys/uvm/uvm_mmap.c:425
[  42.9679420] compat_43_sys_mmap() at netbsd:compat_43_sys_mmap+0x331 sys/compat/common/vm_43.c:150
[  43.0179417] sys_syscall() at netbsd:sys_syscall+0x2c5 sys/kern/sys_syscall.c:90
[  43.0679458] syscall() at netbsd:syscall+0x60c sy_invoke sys/sys/syscallvar.h:94 [inline]
[  43.0679458] syscall() at netbsd:syscall+0x60c sys/arch/x86/x86/syscall.c:138
[  43.0879425] --- syscall (number 71 via SYS_syscall) ---
[  43.0979596] netbsd:syscall+0x60c:
[  43.0979596] cpu1: End traceback...
[  43.1079740] fatal breakpoint trap in supervisor mode
[  43.1079740] trap type 1 code 0 rip 0xffffffff802228ad cs 0x8 rflags 0x282 cr2 0xfffff0008782b000 ilevel 0 rsp 0xfffff00087817240
[  43.1179518] curlwp 0xfffff00012bb4080 pid 1082.1082 lowest kstack 0xfffff000878102c0