panic: kernel diagnostic assertion "vp->v_usecount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_subr.c", line 639 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 178989 96968 0 0x8000000 0 1 syz-executor *241690 73467 60928 0x8000010 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830d710a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8308c51e,ffffffff830af90e,27f,ffffffff8302bc90) at __assert+0x29 vdoom(fffffd8074c08498) at vdoom+0x105 sys/kern/vfs_subr.c:641 ufs_inactive(ffff80002a0c2508) at ufs_inactive+0x188 sys/ufs/ufs/ufs_inode.c:89 VOP_INACTIVE(fffffd8074c08498,ffff8000371e82b8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vclean(fffffd8074c08498,8,ffff8000371e82b8) at vclean+0x234 sys/kern/vfs_subr.c:1107 vgonel(fffffd8074c08498,ffff8000371e82b8) at vgonel+0xec sys/kern/vfs_subr.c:1197 vop_generic_revoke(ffff80002a0c2698) at vop_generic_revoke+0x32a sys/kern/vfs_default.c:105 VOP_REVOKE(fffffd80688b57f8,1) at VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 ptmioctl(5100,40287401,ffff80002a0c2b60,3,ffff8000371e82b8) at ptmioctl+0x832 sys/kern/tty_pty.c:1172 VOP_IOCTL(fffffd806dd99878,40287401,ffff80002a0c2b60,3,fffffd807f7d3340,ffff8000371e82b8) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a88f098,40287401,ffff80002a0c2b60,ffff8000371e82b8) at vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000371e82b8,ffff80002a0c2d40,ffff80002a0c2c90) at sys_ioctl+0x67c end trace frame: 0xffff80002a0c2d30, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "vp->v_usecount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_subr.c", line 639 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830d710a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8308c51e,ffffffff830af90e,27f,ffffffff8302bc90) at __assert+0x29 vdoom(fffffd8074c08498) at vdoom+0x105 sys/kern/vfs_subr.c:641 ufs_inactive(ffff80002a0c2508) at ufs_inactive+0x188 sys/ufs/ufs/ufs_inode.c:89 VOP_INACTIVE(fffffd8074c08498,ffff8000371e82b8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vclean(fffffd8074c08498,8,ffff8000371e82b8) at vclean+0x234 sys/kern/vfs_subr.c:1107 vgonel(fffffd8074c08498,ffff8000371e82b8) at vgonel+0xec sys/kern/vfs_subr.c:1197 vop_generic_revoke(ffff80002a0c2698) at vop_generic_revoke+0x32a sys/kern/vfs_default.c:105 VOP_REVOKE(fffffd80688b57f8,1) at VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 ptmioctl(5100,40287401,ffff80002a0c2b60,3,ffff8000371e82b8) at ptmioctl+0x832 sys/kern/tty_pty.c:1172 VOP_IOCTL(fffffd806dd99878,40287401,ffff80002a0c2b60,3,fffffd807f7d3340,ffff8000371e82b8) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a88f098,40287401,ffff80002a0c2b60,ffff8000371e82b8) at vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000371e82b8,ffff80002a0c2d40,ffff80002a0c2c90) at sys_ioctl+0x67c syscall(ffff80002a0c2d40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c2d40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe23265044e0, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a0c2390 rbx 0xffffffff834a3d87 cpu_info_full_primary+0x2d87 rdx 0xffff80000123f100 rcx 0xffff8000371e82b8 rax 0xffffffff834a2ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1bf93ed7ce8a09ad r11 0xe90100f73c97c1c8 r12 0xffffffff834a3b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff813bf665 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0c2380 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=241690 pid=73467 tcnt=2 stat=onproc flags process=8000010 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff6530,0xffff800034399c10 process=0xffff8000359b7aa0 user=0xffff80002a0bd000, vmspace=0xfffffd806c8d1540 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96968 178989 83319 0 7 0x8000000 syz-executor 96968 325717 83319 0 2 0xc000000 syz-executor 96968 68920 83319 0 3 0xc000080 fsleep syz-executor 96968 80422 83319 0 2 0xc000000 syz-executor 14890 457941 87735 0 2 0x8000000 syz-executor 14890 399255 87735 0 2 0xc000000 syz-executor 73467 210826 36607 60928 2 0x8000010 syz-executor *73467 241690 36607 60928 7 0xc000010 syz-executor 44676 276067 64507 60929 2 0x8000010 syz-executor 44676 283609 64507 60929 3 0xc000090 fsleep syz-executor 8722 90637 60462 0 2 0x8000000 syz-executor 8722 512899 60462 0 3 0xc000080 fsleep syz-executor 18118 311915 31970 0 3 0x8000090 nanoslp syz-executor 18118 395811 31970 0 3 0xc000090 sbwait syz-executor 18118 375560 31970 0 3 0xc000090 fsleep syz-executor 27468 166116 10945 0 2 0x8000000 syz-executor 27468 13020 10945 0 3 0xc000080 tunread syz-executor 27468 214337 10945 0 3 0xc000000 inode syz-executor 27468 122746 10945 0 3 0xc000080 fsleep syz-executor 60737 249996 7183 0 3 0x8000080 nanoslp syz-executor 60737 269843 7183 0 2 0xc000080 syz-executor 60737 517978 7183 0 3 0xc000080 fsleep syz-executor 83319 149538 65290 0 3 0x8000082 nanoslp syz-executor 36607 259497 65290 0 3 0x8000082 nanoslp syz-executor 60462 516558 65290 0 3 0x8000082 nanoslp syz-executor 7183 25472 65290 0 3 0x8000082 nanoslp syz-executor 64507 11157 65290 0 3 0x8000082 nanoslp syz-executor 87735 128781 65290 0 3 0x8000082 nanoslp syz-executor 10945 192586 65290 0 3 0x8000082 nanoslp syz-executor 31970 130510 65290 0 3 0x8000082 nanoslp syz-executor 12812 286454 0 0 3 0x14200 acct acct 75144 339035 1 0 3 0x18100083 ttyin getty 43863 65662 0 0 3 0x14280 nfsidl nfsio 32601 164852 0 0 3 0x14280 nfsidl nfsio 87782 158046 0 0 3 0x14280 nfsidl nfsio 58639 80353 0 0 3 0x14280 nfsidl nfsio 37654 362183 0 0 3 0x14280 nfsidl nfsio 53000 123571 0 0 3 0x14280 nfsidl nfsio 43778 129581 0 0 3 0x14280 nfsidl nfsio 67711 50801 0 0 3 0x14280 nfsidl nfsio 63295 276763 0 0 3 0x14280 nfsidl nfsio 50317 251817 0 0 3 0x14280 nfsidl nfsio 23263 154138 0 0 3 0x14280 nfsidl nfsio 93341 415948 0 0 3 0x14280 nfsidl nfsio 40377 523308 0 0 3 0x14280 nfsidl nfsio 23400 258337 0 0 3 0x14280 nfsidl nfsio 33904 91583 0 0 3 0x14280 nfsidl nfsio 60463 19299 0 0 3 0x14280 nfsidl nfsio 67631 476433 0 0 3 0x14280 nfsidl nfsio 52861 399618 0 0 3 0x14280 nfsidl nfsio 81062 262014 0 0 3 0x14280 nfsidl nfsio 12905 172461 0 0 3 0x14280 nfsidl nfsio 51177 158172 0 0 3 0x14200 bored sosplice 65290 166255 7643 0 3 0x8000082 kqread syz-executor 7643 336538 80063 0 3 0x810008a sigsusp ksh 80063 507526 50415 0 3 0x18000098 kqread sshd-session 50415 78238 99048 0 3 0x18000092 kqread sshd-session 99048 66792 1 0 3 0x18000088 kqread sshd 71212 477941 3769 74 3 0x19100092 bpf pflogd 3769 45402 1 0 3 0x18000080 sbwait pflogd 70171 282615 86747 73 3 0x19100010 biowait syslogd 86747 20369 1 0 3 0x18100082 sbwait syslogd 49353 123169 1 0 3 0x18100080 kqread resolvd 1296 405179 14110 77 3 0x18100092 kqread dhcpleased 90499 351682 14110 77 3 0x18100092 kqread dhcpleased 14110 211981 1 0 3 0x18000080 kqread dhcpleased 92446 502561 0 0 3 0x14200 bored smr 41243 392558 0 0 2 0x14200 zerothread 68154 311407 0 0 3 0x14200 aiodoned aiodoned 97728 94122 0 0 3 0x14200 syncer update 68148 484489 0 0 3 0x14200 cleaner cleaner 74231 233527 0 0 3 0x14200 reaper reaper 64153 227009 0 0 3 0x14200 pgdaemon pagedaemon 87496 400952 0 0 3 0x14200 bored viomb 6615 517437 0 0 3 0x40014200 acpi0 acpi0 35599 422933 0 0 3 0x40014200 idle1 5575 388309 0 0 3 0x14200 bored softnet3 10411 443114 0 0 3 0x14200 bored softnet2 5213 44770 0 0 3 0x14200 bored softnet1 66735 118364 0 0 3 0x14200 bored softnet0 38912 386552 0 0 3 0x14200 bored systqmp 38533 212931 0 0 3 0x14200 bored systq 9747 441451 0 0 3 0x14200 tmoslp softclockmp 8250 289885 0 0 3 0x40014200 tmoslp softclock 66436 81213 0 0 3 0x40014200 idle0 1 485712 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/vfs_subr.c:119 r = 0 (0xffffffff834e2e38) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 vdoom+0x2b sys/kern/vfs_subr.c:639 #4 ufs_inactive+0x188 sys/ufs/ufs/ufs_inode.c:89 #5 VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 #6 vclean+0x234 sys/kern/vfs_subr.c:1107 #7 vgonel+0xec sys/kern/vfs_subr.c:1197 #8 vop_generic_revoke+0x32a sys/kern/vfs_default.c:105 #9 VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 #10 ptmioctl+0x832 sys/kern/tty_pty.c:1172 #11 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #12 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 #13 sys_ioctl+0x67c #14 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #14 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 Process 73467 (syz-executor) thread 0xffff8000371e82b8 (241690) Process 27468 (syz-executor) thread 0xffff8000309942d0 (13020) Process 27468 (syz-executor) thread 0xffff8000ffff6530 (214337) Process 70171 (syslogd) thread 0xffff8000ffffd960 (282615) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10247 10322K 10641K 166960K 17044 0 pcb 19 20K 21K 166960K 745 0 rtable 228 9K 9K 166960K 3755 0 pf 46 12K 12K 166960K 443 0 ifaddr 51 17K 17K 166960K 537 0 ifgroup 76 3K 3K 166960K 680 0 sysctl 4 1K 1K 166960K 10 0 counters 74 37K 37K 166960K 390 0 ioctlops 0 0K 4K 166960K 1829 0 iov 0 0K 16K 166960K 223 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1530 96K 97K 166960K 6070 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 6K 10K 166960K 72 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 365 0 dirhash 15 2K 3K 166960K 63 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 89K 166960K 4138 0 sigio 0 0K 0K 166960K 98 0 proc 70 91K 128K 166960K 3648 0 subproc 104 6K 7K 166960K 1417 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 617 0 in_multi 96 7K 7K 166960K 1298 0 ether_multi 1 0K 0K 166960K 25 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 2200 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 261 89K 108K 166960K 35412 0 UVM aobj 76 7K 7K 166960K 78 0 pinsyscall 43 86K 102K 166960K 7841 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 171 0 NDP 17 0K 2K 166960K 395 0 temp 79 6816K 6896K 166960K 109086 0 kqueue 15 20K 31K 166960K 410 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 577 0 573 4 3 1 3 0 8 0 rtentry 112 1320 0 1219 4 1 3 4 0 8 0 unpcb 144 3072 0 3053 24 22 2 6 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 1587 0 1582 50 42 8 11 0 8 7 arp 120 235 0 217 1 0 1 1 0 8 0 inpcb 384 5137 0 5123 80 71 9 19 0 8 7 nd6 136 370 0 343 3 2 1 2 0 8 0 pkpcb 40 17 0 17 9 8 1 1 0 8 1 kcovpl 48 109 0 101 1 0 1 1 0 8 0 ppxss 1168 26 0 26 8 8 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 26 0 22 1 0 1 1 0 482 0 pffrnode 88 24 0 20 1 0 1 1 0 8 0 pffrent 40 90 0 86 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 264 3 0 2 1 0 1 1 0 8 0 pfstitem 24 355 0 295 1 0 1 1 0 8 0 pfstkey 128 357 0 297 3 0 3 3 0 8 0 pfstate 376 356 0 296 11 4 7 9 0 8 0 pfrule 1344 41 0 36 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5178 0 4765 41 15 26 29 0 8 0 art_table 32 5179 0 4765 4 0 4 4 0 8 0 art_node 16 1314 0 1229 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semapl 112 363 0 353 1 0 1 1 0 8 0 shmpl 112 75 0 2 3 0 3 3 0 8 0 dirhash 1024 52 0 33 3 0 3 3 0 8 0 dino2pl 256 6877 0 5165 108 0 108 108 0 8 0 ffsino 272 6877 0 5165 115 0 115 115 0 8 0 nchpl 144 11151 0 10458 67 38 29 67 0 8 0 uvmvnodes 80 8210 0 0 168 0 168 168 0 8 0 vnodes 216 8210 0 0 457 0 457 457 0 8 0 namei 1024 52726 0 52725 7 5 2 2 0 8 1 percpumem 16 209 0 158 1 0 1 1 0 8 0 vcpupl 3904 8 0 0 1 0 1 1 0 8 0 vmpool 696 22 0 14 2 1 1 1 0 8 0 kstatmem 264 350 0 316 5 2 3 3 0 8 0 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 63455 0 63454 21 20 1 8 1 8 0 plimitpl 152 1750 0 1729 1 0 1 1 0 8 0 sigapl 424 4263 0 4191 11 2 9 9 0 8 0 futexpl 64 51147 0 51141 10 9 1 1 0 8 0 knotepl 120 649 0 0 17 0 17 17 0 8 0 kqueuepl 216 1215 0 1202 23 20 3 5 0 8 2 pipepl 320 863 0 836 10 7 3 8 0 8 0 fdescpl 496 4218 0 4186 6 1 5 5 0 8 0 filepl 152 33469 0 33199 71 54 17 20 0 8 6 lockfpl 104 1557 0 1555 2 1 1 2 0 8 0 lockfspl 48 616 0 614 1 0 1 1 0 8 0 sessionpl 144 125 0 116 1 0 1 1 0 8 0 pgrppl 48 458 0 441 1 0 1 1 0 8 0 ucredpl 104 6264 0 6247 1 0 1 1 0 8 0 zombiepl 144 4191 0 4191 1 0 1 1 0 8 1 processpl 1152 4263 0 4191 7 1 6 6 0 8 0 procpl 648 9046 0 8960 10 2 8 8 0 8 0 srpgc 96 8 0 8 3 3 0 1 0 8 0 sosppl 168 13 0 13 7 6 1 1 0 8 1 sockpl 664 8847 0 8810 90 79 11 18 0 8 7 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 379 0 0 31 0 31 31 0 8 0 mtagpl 96 77 0 0 2 0 2 2 0 8 0 mbufpl 256 1059 0 0 58 0 58 58 0 8 0 bufpl 280 15672 0 7463 587 0 587 587 0 8 0 anonpl 24 560708 0 557052 137 65 72 82 0 185 32 amapchunkpl 152 112391 0 111849 85 52 33 42 0 158 12 amappl16 200 10367 0 10341 144 117 27 27 0 8 23 amappl15 192 20 0 20 4 4 0 1 0 8 0 amappl14 184 318 0 306 1 0 1 1 0 8 0 amappl13 176 10 0 10 2 2 0 1 0 8 0 amappl12 168 6458 0 6426 4 2 2 3 0 8 0 amappl11 160 81 0 67 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 152 0 152 2 2 0 1 0 8 0 amappl8 136 40 0 38 1 0 1 1 0 8 0 amappl7 128 313 0 301 1 0 1 1 0 8 0 amappl6 120 1200 0 1198 1 0 1 1 0 8 0 amappl5 112 569 0 557 1 0 1 1 0 8 0 amappl4 104 709 0 690 1 0 1 1 0 8 0 amappl3 96 22797 0 22669 4 0 4 4 0 8 0 amappl2 88 2050 0 1985 2 0 2 2 0 8 0 amappl1 80 25882 0 25302 14 1 13 14 0 8 0 amappl 88 34062 0 33872 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 77 0 2 2 0 2 2 0 8 0 uaddrrnd 24 4240 0 4200 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4240 0 4200 1 0 1 1 0 8 0 vmmpekpl 168 35769 0 35715 4 0 4 4 0 8 0 vmmpepl 168 259558 0 257605 190 82 108 108 0 357 22 vmsppl 440 4239 0 4200 7 2 5 5 0 8 0 rwobjpl 56 78314 0 69068 150 12 138 138 0 8 6 pdppl 4096 8487 0 8408 275 194 81 85 0 8 2 pvpl 32 34190 0 0 277 1 276 276 0 265 0 pmappl 248 4239 0 4200 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 707 0 268 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830d710a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8308c51e,ffffffff830af90e,27f,ffffffff8302bc90) at __assert+0x29 vdoom(fffffd8074c08498) at vdoom+0x105 sys/kern/vfs_subr.c:641 ufs_inactive(ffff80002a0c2508) at ufs_inactive+0x188 sys/ufs/ufs/ufs_inode.c:89 VOP_INACTIVE(fffffd8074c08498,ffff8000371e82b8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vclean(fffffd8074c08498,8,ffff8000371e82b8) at vclean+0x234 sys/kern/vfs_subr.c:1107 vgonel(fffffd8074c08498,ffff8000371e82b8) at vgonel+0xec sys/kern/vfs_subr.c:1197 vop_generic_revoke(ffff80002a0c2698) at vop_generic_revoke+0x32a sys/kern/vfs_default.c:105 VOP_REVOKE(fffffd80688b57f8,1) at VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 ptmioctl(5100,40287401,ffff80002a0c2b60,3,ffff8000371e82b8) at ptmioctl+0x832 sys/kern/tty_pty.c:1172 VOP_IOCTL(fffffd806dd99878,40287401,ffff80002a0c2b60,3,fffffd807f7d3340,ffff8000371e82b8) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a88f098,40287401,ffff80002a0c2b60,ffff8000371e82b8) at vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000371e82b8,ffff80002a0c2d40,ffff80002a0c2c90) at sys_ioctl+0x67c syscall(ffff80002a0c2d40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c2d40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe23265044e0, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x763d9f27b8f0, count: 12 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x763d9f27b8f0, count: -3