panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/route.c", line 1089
Starting stack trace...
panic(ffffffff83378377) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b7b08,ffffffff833fa054,441,ffffffff833e5ddb) at __assert+0x29 sys/kern/subr_prf.c:-1
rtrequest(1,ffff80003811b4d8,8,ffff80003811b580,0) at rtrequest+0xfea
rt_ifa_add(ffff80000160a900,40004,ffff80000160a978,0) at rt_ifa_add+0x22e sys/net/route.c:1284
in_ifinit(ffff8000ffff5b60,ffff80000160a900,ffff80003811b6a0,1) at in_ifinit+0x540 sys/netinet/in.c:-1
pppx_add_session(ffff8000015a4d00,ffff8000015dac00) at pppx_add_session+0x47b sys/net/if_pppx.c:717
VOP_IOCTL(fffffd8065f9e2b8,82907003,ffff8000015dac00,81,fffffd8007bfd618,ffff80002f4f1770) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806ce01cb8,82907003,ffff8000015dac00,ffff80002f4f1770) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80002f4f1770,ffff80003811baa0,ffff80003811b9f0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003811baa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003811baa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x616db96f580, count: 246
End of stack trace.