panic: ifa_update_broadaddr does not support dynamic length
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*181116   6723      0   0x8000000  0x4000000    1K syz-executor.4
 475335  46547      0   0x8000002          0    0  syz-executor.2
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8285b3fa) at panic+0x17b sys/kern/subr_prf.c:198
ifa_update_broadaddr(ffff800000e66000,ffff800000e65a00,ffff80002a2135a0) at ifa_update_broadaddr+0x6a sys/net/if.c:3315
in_ioctl(80206913,ffff80002a213590,ffff800000e66000,1) at in_ioctl+0x5cf sys/netinet/in.c:313
ifioctl(ffff800000ee8018,80206913,ffff80002a213590,ffff80003738ad00) at ifioctl+0x106c pru_control sys/sys/protosw.h:378 [inline]
ifioctl(ffff800000ee8018,80206913,ffff80002a213590,ffff80003738ad00) at ifioctl+0x106c sys/net/if.c:2449
sys_ioctl(ffff80003738ad00,ffff80002a213770,ffff80002a2136c0) at sys_ioctl+0x4a9
syscall(ffff80002a213770) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a213770) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa6e39d309d0, count: 7
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