panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 316 Starting stack trace... panic(ffffffff8338bcaf) at panic+0x1d0 sys/kern/subr_prf.c:229 __assert(ffffffff833c7581,ffffffff8341727f,13c,ffffffff8330ad80) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff80000147c800) at tun_clone_destroy+0x38a if_clone_destroy(ffff80003c4a1110) at if_clone_destroy+0x1d5 sys/net/if.c:1415 ifioctl(ffff80000169a8d0,80206979,ffff80003c4a1110,ffff80003c427a20) at ifioctl+0x59d sys/net/if.c:2092 sys_ioctl(ffff80003c427a20,ffff80003c4a12f0,ffff80003c4a1240) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c4a12f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a12f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbc110e24e20, count: 249 End of stack trace.