panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_synch.c", line 951 Starting stack trace... panic(ffffffff834358e3) at panic+0x1ba sys/kern/subr_prf.c:229 __assert(ffffffff833dfa57,ffffffff8332afbf,3b7,ffffffff833e3d20) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002a8b30c0,ffffffff8332ed97) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:952 pppx_if_destroy(0,ffff80002a8b30b8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b92,41,2000,ffff80002a7bcpckbd_enable: co7mmand error #!c *A/9ä8æ˜1ÛñV pck)bd_enable: comma nd error pckbda_enable: commandt error pckbd_e nable: command eprror pppx: unapble to set addrepsses for pppx1, xerror=17 deniecd attempt to setl clock back 2 seoconds pckbd_ensable: command ereror pckbd_enab+le: command erro0r pckbd_enablex: command errora pppx: unable t0o set addresses for pppx1, error=17 pckbd_enable: command errosr pckbd_enablep: command errore pppx: unable tco set addresses _for pppx1, errorc=17 pppx: unablle to set addresoses for pppx1, esrror=17 fuse: eCannot find fuse(buf denied attfempt to set clocfk back 159383573f seconds mallofc(): allocation 8too large, type 0= 6, size = 561003010304 pppx: 0unable to set ad3dresses for pppxc1, error=17 pc9kbd_enable: comm5and error pppxa: unable to set caddresses for pp0px1, error=17 0pppx: unable to )set addresses fo r pppx2, error=1a7 t spec_close+0x412 VOP_CLOSE(fffffd80681ebcc0,41,fffffd8007bfb680,ffff80002a7bc7c8) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b54b4c0,ffff80002a7bc7c8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b54b4c0,ffff80002a7bc7c8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806b54b4c0,ffff80002a7bc7c8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b54b4c0,ffff80002a7bc7c8) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80002a7bc7c8) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80002a7bc7c8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bc7c8,ffff80003c95af70,ffff80003c95aec0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c95af70) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95af70) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71ac20525640, count: 242 End of stack trace. syncing disks...set $lines = 0 set $maxwidth = 0 show panic trace show registers show proc ps show all locks show malloc show all pools machine ddbcpu 0 trace machine ddbcpu 1 trace