panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1089
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
* 77987  88135      0           0  0x4000000    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834b75bd) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834f735b,ffffffff8347c795,441,ffffffff83524ec9) at __assert+0x29 sys/kern/subr_prf.c:-1
rt_hash(1,ffff80003c3efa08,4) at rt_hash
rt_ifa_add(ffff800001616300,840100,ffff800001616368,0) at rt_ifa_add+0x22e sys/net/route.c:1284
in_ifinit(ffff80000160f000,ffff800001616300,ffff80003c3efd00,0) at in_ifinit+0x4bb in_insert_prefix sys/netinet/in.c:789 [inline]
in_ifinit(ffff80000160f000,ffff800001616300,ffff80003c3efd00,0) at in_ifinit+0x4bb sys/netinet/in.c:722
in_ioctl_set_ifaddr(8020690c,ffff80003c3efcf0,ffff80000160f000) at in_ioctl_set_ifaddr+0x349 sys/netinet/in.c:405
ifioctl(ffff8000015a7a80,8020690c,ffff80003c3efcf0,ffff80003c3d2028) at ifioctl+0x1714 pru_control sys/sys/protosw.h:353 [inline]
ifioctl(ffff8000015a7a80,8020690c,ffff80003c3efcf0,ffff80003c3d2028) at ifioctl+0x1714 sys/net/if.c:2554
sys_ioctl(ffff80003c3d2028,ffff80003c3efed0,ffff80003c3efe20) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80003c3efed0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3efed0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2a8162b8960, count: 4
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reports.  Insufficient info makes it difficult to find and fix bugs.
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ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
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