panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 303 Starting stack trace... panic(ffffffff825a382d) at panic+0x16b sys/kern/subr_prf.c:229 __assert(ffffffff8261b0c5,ffffffff82663ef7,12f,ffffffff8262e2bc) at __assert+0x25 sys/kern/subr_prf.c:157 tun_clone_destroy(ffff800000c97800) at tun_clone_destroy+0x278 sys/net/if_tun.c:303 if_clone_destroy(ffff80002e4b0310) at if_clone_destroy+0x132 sys/net/if.c:1276 soo_ioctl(fffffd80682999a0,80206979,ffff80002e4b0310,ffff80002e49a540) at soo_ioctl+0x26c sys_ioctl(ffff80002e49a540,ffff80002e4b0428,ffff80002e4b0470) at sys_ioctl+0x4a2 syscall(ffff80002e4b04f0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4b04f0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b3d5765190, count: 249 End of stack trace.