panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 347612 63895 0 0 0 1 syz-executor *241692 555 0 0x2 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83437528) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd805ff35390,ffff80002a26ed10) at vgonel+0x663 vrecycle(fffffd805ff35390,ffff80002a26ed10) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a37f5e0) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd805ff35390,ffff80002a26ed10) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd805ff35390) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b996898,fffffd805ff35390,ffff80002a37f748) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a26ed10,ffffff9c,6f83652435d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a37f8c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a37f8c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8365243a80, count: 4 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: missing alias ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83437528) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd805ff35390,ffff80002a26ed10) at vgonel+0x663 vrecycle(fffffd805ff35390,ffff80002a26ed10) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a37f5e0) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd805ff35390,ffff80002a26ed10) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd805ff35390) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b996898,fffffd805ff35390,ffff80002a37f748) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a26ed10,ffffff9c,6f83652435d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a37f8c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a37f8c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8365243a80, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a37f410 rbx 0xffffffff83904e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80002a26ed10 rax 0xffffffff83903ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa9d4d3b8ec07ced6 r11 0x86411aa216640e09 r12 0xffffffff83904c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff8336ffa5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a37f400 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=241692 pid=555 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=75, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a26f240,0xffff8000357b7788 process=0xffff80002a3839d8 user=0xffff80002a37a000, vmspace=0xfffffd800b0633d0 estcpu=36, cpticks=7, pctcpu=0.3, user=0, sys=7, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63895 347612 40259 0 7 0 syz-executor 63895 317713 40259 0 2 0x4000000 syz-executor 46896 485552 74418 0 2 0 syz-executor 46896 518321 74418 0 2 0x4000000 syz-executor 46896 48415 74418 0 3 0x4000080 fsleep syz-executor 46896 414132 74418 0 3 0x4000080 fsleep syz-executor 70745 218128 582 0 2 0 syz-executor 70745 303068 582 0 2 0x4000001 syz-executor 23140 296827 3013 0 2 0x1 syz-executor 83782 291835 1 0 3 0x80 nanoslp init 27789 372513 70913 0 3 0x100082 sbwait arp 70913 128391 81210 0 3 0x10008a sigsusp sh * 555 241692 45467 0 7 0x2 syz-executor 74418 230343 45467 0 3 0x82 nanoslp syz-executor 40259 411054 45467 0 2 0x3 syz-executor 3013 395778 45467 0 3 0x82 nanoslp syz-executor 19114 462461 45467 0 2 0x2 syz-executor 34390 357614 45467 0 2 0x2 syz-executor 81210 53896 45467 0 3 0x82 wait syz-executor 582 80165 45467 0 3 0x82 nanoslp syz-executor 45467 320288 39407 0 3 0x82 kqread syz-executor 39407 176248 83134 0 3 0x10008a sigsusp ksh 83134 367270 22930 0 3 0x98 kqread sshd-session 22930 384748 16948 0 3 0x92 kqread sshd-session 16948 318473 1 0 3 0x88 kqread sshd 21447 246910 37183 74 3 0x1100092 bpf pflogd 37183 104072 1 0 3 0x80 sbwait pflogd 10304 230979 70546 73 3 0x1100090 kqread syslogd 70546 421302 1 0 3 0x100082 sbwait syslogd 29173 310439 1 0 3 0x100080 kqread resolvd 44002 50405 14253 77 3 0x100092 kqread dhcpleased 82649 179750 14253 77 3 0x100092 kqread dhcpleased 14253 451008 1 0 3 0x80 kqread dhcpleased 70167 256171 0 0 3 0x14200 bored smr 55222 440678 0 0 2 0x14200 zerothread 58185 125246 0 0 3 0x14200 aiodoned aiodoned 23400 363263 0 0 3 0x14200 syncer update 56353 312697 0 0 3 0x14200 cleaner cleaner 21735 248242 0 0 3 0x14200 reaper reaper 52952 333006 0 0 3 0x14200 pgdaemon pagedaemon 71612 243007 0 0 3 0x14200 bored viomb 63283 25806 0 0 3 0x40014200 acpi0 acpi0 50530 285183 0 0 3 0x40014200 idle1 87406 16955 0 0 3 0x14200 bored softnet1 15926 5791 0 0 3 0x14200 bored softnet0 37250 51549 0 0 3 0x14200 bored systqmp 81919 95930 0 0 3 0x14200 bored systq 75175 261253 0 0 3 0x14200 tmoslp softclockmp 6543 185371 0 0 3 0x40014200 tmoslp softclock 93052 426628 0 0 3 0x40014200 idle0 1 481094 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 63895 (syz-executor) thread 0xffff8000357b7a10 (317713) exclusive rwlock fdlock r = 0 (0xffff8000357aeac0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 doopenat+0x179 sys/kern/vfs_syscalls.c:1122 #3 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #5 Xsyscall+0x128 Process 46896 (syz-executor) thread 0xffff8000357b6d18 (518321) exclusive rwlock inet46 r = 0 (0xffff800001648c00) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 socreate+0x214 pru_attach sys/sys/protosw.h:-1 [inline] #2 socreate+0x214 sys/kern/uipc_socket.c:220 #3 sys_socket+0x124 sys/kern/uipc_syscalls.c:102 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #5 Xsyscall+0x128 shared rwlock netlock r = 0 (0xffffffff8397f380) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 solock_shared+0x6e sys/kern/uipc_socket2.c:343 #3 socreate+0x214 pru_attach sys/sys/protosw.h:-1 [inline] #3 socreate+0x214 sys/kern/uipc_socket.c:220 #4 sys_socket+0x124 sys/kern/uipc_syscalls.c:102 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 555 (syz-executor) thread 0xffff80002a26ed10 (241692) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839ca800) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e7 sys/kern/vfs_bio.c:754 #5 ufs_dirremove+0x290 sys/ufs/ufs/ufs_lookup.c:919 #6 ufs_remove+0x1a7 sys/ufs/ufs/ufs_vnops.c:594 #7 VOP_REMOVE+0x172 sys/kern/vfs_vops.c:331 #8 dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806db120a8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x937 sys/kern/vfs_lookup.c:580 #10 namei+0x7c5 sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 Process 34390 (syz-executor) thread 0xffff8000ffffca68 (357614) exclusive rwlock vmmaplk r = 0 (0xfffffd806c2c1e78) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3752 #4 process_new+0x583 sys/kern/kern_fork.c:282 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd807c69f8a8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3743 #4 process_new+0x583 sys/kern/kern_fork.c:282 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12087K 12347K 166960K 12360 0 pcb 17 12K 12K 166960K 47 0 rtable 213 7K 8K 166960K 354 0 pf 32 17K 18K 166960K 51 0 ifaddr 37 6K 7K 166960K 46 0 ifgroup 51 2K 2K 166960K 61 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 80 0 ioctlops 0 0K 4K 166960K 1511 0 iov 0 0K 32K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1289 81K 81K 166960K 1487 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 272 0 sigio 0 0K 0K 166960K 1 0 proc 66 115K 147K 166960K 569 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 27 0 in_multi 78 5K 6K 166960K 97 0 ether_multi 1 0K 0K 166960K 3 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 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 399 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 212 156K 173K 166960K 4462 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 42 84K 108K 166960K 1408 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 11 0K 1K 166960K 29 0 temp 41 9103K 9183K 166960K 9123 0 kqueue 13 20K 24K 166960K 43 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 37 0 33 1 0 1 1 0 8 0 rtentry 176 105 0 12 5 0 5 5 0 8 0 unpcb 144 92 0 75 1 0 1 1 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpcb 736 55 0 44 1 0 1 1 0 8 0 arp 136 17 0 2 1 0 1 1 0 8 0 inpcb 328 185 0 170 2 0 2 2 0 8 0 nd6 152 23 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 5 0 5 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 0 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 pfstitem 24 28 0 0 1 0 1 1 0 8 0 pfstkey 128 28 0 0 1 0 1 1 0 8 0 pfstate 448 28 0 0 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 425 0 44 27 0 27 27 0 8 2 art_table 40 426 0 44 5 0 5 5 0 8 0 art_node 32 105 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 1865 0 404 92 0 92 92 0 8 0 ffsino 296 1865 0 404 114 0 114 114 0 8 0 nchpl 144 2245 0 549 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 vnodes 216 1997 0 0 111 0 111 111 0 8 0 namei 1024 7039 0 7039 2 1 1 2 0 8 1 percpumem 16 55 0 6 1 0 1 1 0 8 0 kstatmem 264 33 0 8 2 0 2 2 0 8 0 scxspl 216 7380 0 7380 4 3 1 3 1 8 1 plimitpl 152 42 0 26 1 0 1 1 0 8 0 sigapl 424 587 0 540 7 0 7 7 0 8 0 knotepl 120 313 0 0 10 0 10 10 0 8 0 kqueuepl 224 61 0 52 1 0 1 1 0 8 0 pipepl 344 130 0 103 3 0 3 3 0 8 0 fdescpl 528 571 0 540 3 0 3 3 0 8 0 filepl 160 2518 0 2301 11 1 10 11 0 8 0 lockfpl 104 62 0 60 1 0 1 1 0 8 0 lockfspl 48 28 0 26 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 33 0 17 1 0 1 1 0 8 0 ucredpl 104 360 0 347 1 0 1 1 0 8 0 zombiepl 144 563 0 563 2 1 1 1 0 8 1 processpl 1232 587 0 540 5 0 5 5 0 8 0 procpl 664 818 0 766 6 0 6 6 0 8 1 sockpl 752 319 0 283 5 0 5 5 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 172 0 0 11 0 11 11 0 8 0 bufpl 280 3563 0 107 247 0 247 247 0 8 0 anonpl 32 7559 0 0 61 0 61 61 0 246 0 amapchunkpl 152 13475 0 13064 26 1 25 25 0 158 7 amappl16 200 2524 0 2502 18 4 14 14 0 8 9 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 428 0 424 1 0 1 1 0 8 0 amappl13 176 118 0 106 1 0 1 1 0 8 0 amappl12 168 814 0 786 2 0 2 2 0 8 0 amappl11 160 10 0 9 1 0 1 1 0 8 0 amappl10 152 61 0 47 1 0 1 1 0 8 0 amappl9 144 267 0 267 1 1 0 1 0 8 0 amappl8 136 105 0 103 1 0 1 1 0 8 0 amappl7 128 152 0 137 1 0 1 1 0 8 0 amappl6 120 160 0 158 1 0 1 1 0 8 0 amappl5 112 95 0 85 1 0 1 1 0 8 0 amappl4 104 302 0 281 1 0 1 1 0 8 0 amappl3 96 2422 0 2321 4 0 4 4 0 8 0 amappl2 88 519 0 455 2 0 2 2 0 8 0 amappl1 80 9774 0 9178 15 0 15 15 0 8 0 amappl 88 3736 0 3596 4 0 4 4 0 92 0 uvmvnodes 80 104 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 571 0 540 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 571 0 540 1 0 1 1 0 8 0 vmmpekpl 168 6373 0 6341 2 0 2 2 0 8 0 vmmpepl 168 44357 0 42554 102 5 97 97 0 357 9 vmsppl 488 570 0 540 5 0 5 5 0 8 0 rwobjpl 80 15794 0 14770 27 0 27 27 0 8 2 pdppl 4096 1149 0 1080 101 28 73 85 0 8 4 pvpl 32 14903 0 0 121 0 121 121 0 265 0 pmappl 256 570 0 540 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 275 0 33 8 0 8 8 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:438 panic(ffffffff83437528) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd805ff35390,ffff80002a26ed10) at vgonel+0x663 vrecycle(fffffd805ff35390,ffff80002a26ed10) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a37f5e0) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd805ff35390,ffff80002a26ed10) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd805ff35390) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b996898,fffffd805ff35390,ffff80002a37f748) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a26ed10,ffffff9c,6f83652435d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a37f8c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a37f8c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8365243a80, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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: 0x740bf7406b70, count: 12 ddb{1}> trace x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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: 0x740bf7406b70, count: -3