panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 322 Starting stack trace... panic(ffffffff83459ffd) at panic+0x1d0 sys/kern/subr_prf.c:229 __assert(ffffffff83404391,ffffffff833db5f4,142,ffffffff833e51de) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001401800) at tun_clone_destroy+0x38a sys/net/if_tun.c:322 if_clone_destroy(ffff80003c4c9930) at if_clone_destroy+0x1d7 sys/net/if.c:1387 ifioctl(ffff8000014e8028,80206979,ffff80003c4c9930,ffff80003c41c550) at ifioctl+0x5c5 sys/net/if.c:-1 sys_ioctl(ffff80003c41c550,ffff80003c4c9b10,ffff80003c4c9a60) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003c4c9b10) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4c9b10) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e9b56249d30, count: 249 End of stack trace.