panic: ifa_update_broadaddr does not support dynamic length
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*451984  57632      0           0  0x4000000    1K syz-executor.1
 312337  45923      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
ifa_update_broadaddr(ffff800000af1800,ffff800000aeba00,ffff800021bc9260) at ifa_update_broadaddr+0x61 sys/net/if.c:2986
in_ioctl(80206913,ffff800021bc9250,ffff800000af1800,1) at in_ioctl+0x463 sys/netinet/in.c:311
ifioctl(fffffd8068a0c640,80206913,ffff800021bc9250,ffff800020ab0ee8) at ifioctl+0xb64 sys/net/if.c:2218
sys_ioctl(ffff800020ab0ee8,ffff800021bc9368,ffff800021bc93b0) at sys_ioctl+0x5b9
syscall(ffff800021bc9430) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021bc9430) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(0,0,ffffffffffffff36,0,3,d829e5de010) at Xsyscall+0x128
end of kernel
end trace frame: 0xd852aec7b90, count: 7
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