panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 315 Starting stack trace... panic(ffffffff830da315) at panic+0x1d0 sys/kern/subr_prf.c:229 __assert(ffffffff83092c1d,ffffffff83069336,13b,ffffffff830723c7) at __assert+0x29 tun_clone_destroy(ffff800001218800) at tun_clone_destroy+0x38a sys/net/if_tun.c:315 if_clone_destroy(ffff8000371fcfa0) at if_clone_destroy+0x1d7 sys/net/if.c:1384 ifioctl(ffff80000135d9f8,80206979,ffff8000371fcfa0,ffff8000371ba310) at ifioctl+0x5c5 sys_ioctl(ffff8000371ba310,ffff8000371fd180,ffff8000371fd0d0) at sys_ioctl+0x67c syscall(ffff8000371fd180) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371fd180) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe06ce00bf90, count: 249 End of stack trace.