[   1.0201870] panic: kernel diagnostic assertion "len <= map->dm_mapsize - offset" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/arch/x86/x86/bus_dma.c", line 813 bad length 0x0 + 1000 > 3
[   1.0201870] cpu0: Begin traceback...
[   1.0201870] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
[   1.0201870] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x23db0
[   1.0201870] bus_dmamap_sync() at netbsd:bus_dmamap_sync+0x369 _bus_dmamap_sync sys/arch/x86/x86/bus_dma.c:813 [inline]
[   1.0201870] bus_dmamap_sync() at netbsd:bus_dmamap_sync+0x369 sys/arch/x86/x86/bus_dma.c:1373
[   1.0201870] virtio_enqueue_commit() at netbsd:virtio_enqueue_commit+0x8f sys/dev/pci/virtio.c:1139
[   1.0201870] viornd_get() at netbsd:viornd_get+0x1c8 sys/dev/pci/viornd.c:111
[   1.0201870] rnd_attach_source() at netbsd:rnd_attach_source+0x4fd sys/kern/kern_entropy.c:1678
[   1.0201870] viornd_attach() at netbsd:viornd_attach+0x33e sys/dev/pci/viornd.c:202
[   1.0201870] config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
[   1.0201870] config_found() at netbsd:config_found+0x1e2 sys/kern/subr_autoconf.c:1262
[   1.0201870] virtio_pci_rescan() at netbsd:virtio_pci_rescan+0xd4 sys/dev/pci/virtio_pci.c:317
[   1.0201870] virtio_pci_attach() at netbsd:virtio_pci_attach+0x491 sys/dev/pci/virtio_pci.c:298
[   1.0201870] config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
[   1.0201870] config_found() at netbsd:config_found+0x1e2 sys/kern/subr_autoconf.c:1262
[   1.0201870] pci_probe_device() at netbsd:pci_probe_device+0xf77 sys/dev/pci/pci.c:488
[   1.0201870] pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x426 sys/dev/pci/pci.c:819
[   1.0201870] pcirescan() at netbsd:pcirescan+0x71 sys/dev/pci/pci.c:113
[   1.0201870] pciattach() at netbsd:pciattach+0x310 sys/dev/pci/pci.c:210
[   1.0201870] config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
[   1.0201870] config_found() at netbsd:config_found+0x1e2 sys/kern/subr_autoconf.c:1262
[   1.0201870] mp_pci_scan() at netbsd:mp_pci_scan+0x265 sys/arch/x86/x86/mp.c:96
[   1.0201870] amd64_mainbus_attach() at netbsd:amd64_mainbus_attach+0x867 sys/arch/amd64/amd64/amd64_mainbus.c:213
[   1.0201870] mainbus_attach() at netbsd:mainbus_attach+0x1a2 sys/arch/x86/x86/mainbus.c:216
[   1.0201870] config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
[   1.0201870] config_rootfound() at netbsd:config_rootfound+0xda config_attach sys/kern/subr_autoconf.c:1810 [inline]
[   1.0201870] config_rootfound() at netbsd:config_rootfound+0xda sys/kern/subr_autoconf.c:1290
[   1.0201870] cpu_configure() at netbsd:cpu_configure+0x68 sys/arch/amd64/amd64/autoconf.c:112
[   1.0201870] main() at netbsd:main+0x4b8 sys/kern/init_main.c:555
[   1.0201870] cpu0: End traceback...
[   1.0201870] fatal breakpoint trap in supervisor mode
[   1.0201870] trap type 1 code 0 rip 0xffffffff8023230d cs 0x8 rflags 0x202 cr2 0 ilevel 0x8 rsp 0xffffffff838747c0
[   1.0201870] curlwp 0xffffffff83345d80 pid 0.0 lowest kstack 0xffffffff8386e2c0
Stopped in pid 0.0 (system) at  netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x105 sys/ddb/db_panic.c:69
vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
_sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x23db0
bus_dmamap_sync() at netbsd:bus_dmamap_sync+0x369 _bus_dmamap_sync sys/arch/x86/x86/bus_dma.c:813 [inline]
bus_dmamap_sync() at netbsd:bus_dmamap_sync+0x369 sys/arch/x86/x86/bus_dma.c:1373
virtio_enqueue_commit() at netbsd:virtio_enqueue_commit+0x8f sys/dev/pci/virtio.c:1139
viornd_get() at netbsd:viornd_get+0x1c8 sys/dev/pci/viornd.c:111
rnd_attach_source() at netbsd:rnd_attach_source+0x4fd sys/kern/kern_entropy.c:1678
viornd_attach() at netbsd:viornd_attach+0x33e sys/dev/pci/viornd.c:202
config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
config_found() at netbsd:config_found+0x1e2 sys/kern/subr_autoconf.c:1262
virtio_pci_rescan() at netbsd:virtio_pci_rescan+0xd4 sys/dev/pci/virtio_pci.c:317
virtio_pci_attach() at netbsd:virtio_pci_attach+0x491 sys/dev/pci/virtio_pci.c:298
config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
config_found() at netbsd:config_found+0x1e2 sys/kern/subr_autoconf.c:1262
pci_probe_device() at netbsd:pci_probe_device+0xf77 sys/dev/pci/pci.c:488
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x426 sys/dev/pci/pci.c:819
pcirescan() at netbsd:pcirescan+0x71 sys/dev/pci/pci.c:113
pciattach() at netbsd:pciattach+0x310 sys/dev/pci/pci.c:210
config_attach_internal() at netbsd:config_attach_internal+0x341 sys/kern/subr_autoconf.c:1775
config_found() at netbsd:config_found+0x1e2 sys/kern/subr_autoconf.c:1262
mp_pci_scan() at netbsd:mp_pci_scan+0x265 sys/arch/x86/x86/mp.c:96
--db_more--