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(ffffffff830d5e2e) at panic+0x1d0 sys/kern/subr_prf.c:229 __assert(ffffffff8308e3a5,ffffffff83069c97,13b,ffffffff8307288a) at __assert+0x29 tun_clone_destroy(ffff800001206000) at tun_clone_destroy+0x38a sys/net/if_tun.c:315 if_clone_destroy(ffff80002aa01aa0) at if_clone_destroy+0x1d7 sys/net/if.c:1384 ifioctl(ffff800001368d40,80206979,ffff80002aa01aa0,ffff800033b931f0) at ifioctl+0x5c5 sys_ioctl(ffff800033b931f0,ffff80002aa01c80,ffff80002aa01bd0) at sys_ioctl+0x67c syscall(ffff80002aa01c80) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002aa01c80) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1608e4be10, count: 249 End of stack trace. syncing disks...