panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/route.c", line 1089
Starting stack trace...
panic(ffffffff833768c8) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b5be4,ffffffff833f7535,441,ffffffff833e320a) at __assert+0x29 sys/kern/subr_prf.c:-1
rtrequest(1,ffff80002a852fd8,8,ffff80002a8530a0,0) at rtrequest+0x115a
rt_ifa_add(ffff80000142d400,40004,ffff80000142d478,0) at rt_ifa_add+0x38f sys/net/route.c:1284
in_ifinit(ffff80002a816630,ffff80000142d400,ffff80002a8531d0,1) at in_ifinit+0x540 sys/netinet/in.c:-1
pppx_add_session(ffff800000b51e00,ffff800000b52c00) at pppx_add_session+0x47b sys/net/if_pppx.c:717
VOP_IOCTL(fffffd806bbd2be0,82907003,ffff800000b52c00,41,fffffd8007bfd750,ffff80003c93b778) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806cdf94c8,82907003,ffff800000b52c00,ffff80003c93b778) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80003c93b778,ffff80002a8535d0,ffff80002a853520) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a8535d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a8535d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xecd74973e60, count: 246
End of stack trace.