[   1.0000000] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/crypto/nist_hash_drbg/nist_hash_drbg.c:1090:4, variable length array bound value -1 <= 0

[   1.0000000] cpu0: Begin traceback...
[   1.0000000] vpanic() at netbsd:vpanic+0x258 sys/kern/subr_prf.c:336
[   1.0000000] isAlreadyReported() at netbsd:isAlreadyReported
[   1.0000000] HandleVlaBoundNotPositive() at netbsd:HandleVlaBoundNotPositive+0xed sys/../common/lib/libc/misc/ubsan.c:431
[   1.0000000] nist_sha256_hash_drbg_initialize() at netbsd:nist_sha256_hash_drbg_initialize+0x1030 sys/crypto/nist_hash_drbg/nist_hash_drbg.c:1090
[   1.0000000] cprng_init() at netbsd:cprng_init+0x12 sys/kern/subr_cprng.c:80
[   1.0000000] main() at netbsd:main+0x18a sys/kern/init_main.c:394
[   1.0000000] cpu0: End traceback...
[   1.0000000] fatal breakpoint trap in supervisor mode
[   1.0000000] trap type 1 code 0 rip 0xffffffff8021ddad cs 0x8 rflags 0x202 cr2 0 ilevel 0x8 rsp 0xffffffff85e16680
[   1.0000000] curlwp 0xffffffff84c01c00 pid 0.1 lowest kstack 0xffffffff85e122c0
Stopped in pid 0.1 (system) at  netbsd:breakpoint+0x5:  leave
db{0}>