panic: Data modified on freelist: word 5 of object 0xffff800000a92b00 size 0x100 previous type devbuf (0xd != 0xdead4110)

Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*342917  65382      0           0  0x4000000    0  syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
malloc(100,2,a) at malloc+0xa23 sys/kern/kern_malloc.c:331
bpfopen(31700,1,2000,ffff800016b43650) at bpfopen+0xb5 sys/net/bpf.c:362
spec_open_clone(ffff800016513e18) at spec_open_clone+0x241 sys/kern/spec_vnops.c:737
spec_open(ffff800016513e18) at spec_open+0x40e
VOP_OPEN(fffffd8036ce88f0,1,fffffd803f7c6b40,ffff800016b43650) at VOP_OPEN+0x6a sys/kern/vfs_vops.c:154
vn_open(ffff800016514058,1,0) at vn_open+0x494 sys/kern/vfs_vnops.c:174
doopenat(ffff800016b43650,ffffff9c,20000040,0,0,ffff800016514250) at doopenat+0x28e sys/kern/vfs_syscalls.c:1157
syscall(ffff8000165142d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffffa2,0,4,e9dc7a3d0e0) at Xsyscall+0x128
end of kernel
end trace frame: 0xe9ffc5494e0, count: 4
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