panic: kernel diagnostic assertion "dtlookup(unit) == NULL" failed: file "/syzkaller/managers/main/kernel/sys/dev/dt/dt_dev.c", line 168
Starting stack trace...
panic(ffffffff827751d3) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff827f20dd,ffffffff82814608,a8,ffffffff8279588d) at __assert+0x29 sys/kern/subr_prf.c:157
dtopen(11e5f,11,2000,ffff800021707138) at dtopen+0x1d4 sys/dev/dt/dt_dev.c:168
spec_open_clone(ffff8000281f69c8) at spec_open_clone+0x208
spec_open(ffff8000281f69c8) at spec_open+0x401 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd807445a128,11,fffffd807f7d7820,ffff800021707138) at VOP_OPEN+0x70 sys/kern/vfs_vops.c:138
vn_open(ffff8000281f6c18,11,0) at vn_open+0x452 sys/kern/vfs_vnops.c:177
doopenat(ffff800021707138,ffffff9c,200000c0,10,0,ffff8000281f6df0) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff8000281f6e70) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe89b4b6e930, count: 247
End of stack trace.