Fpanic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *143063 27050 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83034693) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003720a1f8,ffff80003720a1f8,6e934ca7b6044289) at ufs_dirbadentry VOP_LOOKUP(fffffd80691c1438,ffff80003720a470,ffff80003720a4a0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003720a440) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003720a440) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80002a04fbf8,ffffff9c,20000000,2000,285b9a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80003720a640) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003720a640) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1f7aee8f70, count: 6 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: bad dir ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83034693) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003720a1f8,ffff80003720a1f8,6e934ca7b6044289) at ufs_dirbadentry VOP_LOOKUP(fffffd80691c1438,ffff80003720a470,ffff80003720a4a0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003720a440) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003720a440) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80002a04fbf8,ffffff9c,20000000,2000,285b9a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80003720a640) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003720a640) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1f7aee8f70, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003720a020 rbx 0xffff800029b7cdbf rdx 0xffff8000012a9f00 rcx 0xffff80002a04fbf8 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x742246c4d7aa1664 r11 0x12b3a2cea88a134f r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff82eab345 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003720a010 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=143063 pid=27050 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a04f6e8,0xffff80002a04ecd8 process=0xffff800031790020 user=0xffff800037205000, vmspace=0xfffffd806a7188e8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6079 375269 91819 0 2 0 syz-executor 6079 457443 91819 0 3 0x4000080 fsleep syz-executor 6079 328023 91819 0 3 0x4000080 fsleep syz-executor 69878 463681 88432 0 2 0 syz-executor 69878 111431 88432 0 3 0x4000080 fsleep syz-executor 69878 468831 88432 0 3 0x4000080 fsleep syz-executor 69878 331927 88432 0 3 0x4000080 fsleep syz-executor 27050 102185 13301 0 2 0 syz-executor *27050 143063 13301 0 7 0x4000000 syz-executor 61321 483869 53269 0 2 0 syz-executor 61321 223713 53269 0 2 0x4000000 syz-executor 97168 507978 40607 0 2 0 syz-executor 97168 8757 40607 0 2 0x4000000 syz-executor 95500 38569 51172 0 3 0x80 nanoslp syz-executor 95500 111216 51172 0 3 0x4000080 pipewr syz-executor 95500 295163 51172 0 3 0x4000080 pipewr syz-executor 57810 186739 0 0 3 0x14200 bored sosplice 88223 417284 0 0 3 0x14200 acct acct 91819 399302 72724 0 3 0x82 nanoslp syz-executor 13301 405781 72724 0 3 0x82 nanoslp syz-executor 88432 7971 72724 0 3 0x82 nanoslp syz-executor 53269 470404 72724 0 3 0x82 nanoslp syz-executor 40607 404533 72724 0 3 0x82 nanoslp syz-executor 51172 35242 72724 0 3 0x82 nanoslp syz-executor 72724 85059 90812 0 3 0x82 wait syz-executor 90812 277559 49994 0 3 0x10008a sigsusp ksh 49994 164053 3940 0 3 0x98 kqread sshd-session 3940 4477 70387 0 3 0x92 kqread sshd-session 29156 332370 1 0 3 0x100083 ttyin getty 70387 53073 1 0 3 0x88 kqread sshd 25731 434885 98876 74 3 0x1100092 bpf pflogd 98876 84196 1 0 3 0x80 sbwait pflogd 83607 8673 47339 73 3 0x1100090 kqread syslogd 47339 196419 1 0 3 0x100082 sbwait syslogd 71334 490067 1 0 3 0x100080 kqread resolvd 4257 452533 29982 77 3 0x100092 kqread dhcpleased 12857 101308 29982 77 3 0x100092 kqread dhcpleased 29982 414102 1 0 3 0x80 kqread dhcpleased 63091 495679 0 0 3 0x14200 bored smr 89173 67955 0 0 2 0x14200 zerothread 39275 103807 0 0 3 0x14200 aiodoned aiodoned 64535 154963 0 0 3 0x14200 syncer update 61280 460619 0 0 3 0x14200 cleaner cleaner 54439 250765 0 0 3 0x14200 reaper reaper 73536 310229 0 0 3 0x14200 pgdaemon pagedaemon 21988 340819 0 0 3 0x14200 bored viomb 70686 1305 0 0 3 0x40014200 acpi0 acpi0 94526 519795 0 0 3 0x40014200 idle1 96757 17592 0 0 3 0x14200 bored softnet3 787 148326 0 0 3 0x14200 bored softnet2 48490 442155 0 0 3 0x14200 bored softnet1 28692 61503 0 0 3 0x14200 bored softnet0 23841 501348 0 0 3 0x14200 bored systqmp 13252 142861 0 0 3 0x14200 bored systq 87593 183039 0 0 3 0x14200 tmoslp softclockmp 36003 148231 0 0 3 0x40014200 tmoslp softclock 83405 404574 0 0 3 0x40014200 idle0 1 292441 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 27050 (syz-executor) thread 0xffff80002a04fbf8 (143063) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835780f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x2f2 sys/kern/kern_synch.c:425 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 #6 ufs_lookup+0x548 sys/ufs/ufs/ufs_lookup.c:256 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #9 namei+0x7aa sys/kern/vfs_lookup.c:250 #10 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #11 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #11 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8071bafb40) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 11118K 11445K 166960K 11708 0 pcb 18 12K 12K 166960K 62 0 rtable 206 5K 6K 166960K 372 0 pf 34 17K 19K 166960K 51 0 ifaddr 41 7K 7K 166960K 47 0 ifgroup 55 2K 2K 166960K 55 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 1512 0 iov 0 0K 16K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1434 90K 90K 166960K 1663 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 10 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 16 57K 89K 166960K 405 0 sigio 0 0K 0K 166960K 2 0 proc 72 91K 128K 166960K 551 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 53 0 in_multi 92 7K 7K 166960K 120 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 381 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 234 73K 78K 166960K 5409 0 UVM aobj 13 4K 4K 166960K 14 0 pinsyscall 41 82K 102K 166960K 1477 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 12 0 NDP 12 0K 2K 166960K 29 0 temp 45 6820K 6886K 166960K 12731 0 kqueue 13 20K 28K 166960K 78 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 44 0 41 1 0 1 1 0 8 0 rtentry 112 119 0 23 4 0 4 4 0 8 0 unpcb 144 489 0 471 8 2 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 136 0 132 8 7 1 8 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 336 341 0 333 8 6 2 7 0 8 1 nd6 136 28 0 4 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 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 42 0 1 1 0 1 1 0 8 0 pfstkey 128 42 0 1 2 0 2 2 0 8 0 pfstate 376 42 0 1 5 0 5 5 0 8 0 pfrule 1344 24 0 18 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 482 0 89 29 2 27 29 0 8 1 art_table 32 483 0 89 4 0 4 4 0 8 0 art_node 16 118 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2033 0 526 95 0 95 95 0 8 0 ffsino 272 2033 0 526 101 0 101 101 0 8 0 nchpl 144 2599 0 915 63 0 63 63 0 8 0 uvmvnodes 80 2357 0 0 49 0 49 49 0 8 0 vnodes 216 2357 0 0 131 0 131 131 0 8 0 namei 1024 8469 0 8467 2 1 1 2 0 8 0 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scxspl 216 8053 0 8053 11 9 2 8 1 8 2 plimitpl 152 162 0 145 1 0 1 1 0 8 0 sigapl 424 706 0 656 7 1 6 7 0 8 0 futexpl 64 4048 0 4043 1 0 1 1 0 8 0 knotepl 120 303 0 0 10 0 10 10 0 8 0 kqueuepl 216 115 0 106 2 0 2 2 0 8 1 pipepl 320 130 0 101 3 0 3 3 0 8 0 fdescpl 496 686 0 656 5 0 5 5 0 8 0 filepl 152 3554 0 3299 19 2 17 17 0 8 6 lockfpl 104 138 0 136 1 0 1 1 0 8 0 lockfspl 48 43 0 41 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 360 0 347 1 0 1 1 0 8 0 zombiepl 144 748 0 746 1 0 1 1 0 8 0 processpl 1160 706 0 656 5 1 4 5 0 8 0 procpl 648 1216 0 1155 7 0 7 7 0 8 0 srpgc 96 6 0 6 1 0 1 1 0 8 1 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 664 881 0 852 19 5 14 14 0 8 10 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 148 0 0 19 0 19 19 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 158 0 0 10 0 10 10 0 8 0 bufpl 280 2795 0 97 193 0 193 193 0 8 0 anonpl 24 167768 0 163477 55 21 34 46 0 185 7 amapchunkpl 152 17414 0 16918 28 2 26 26 0 158 4 amappl16 200 4418 0 4337 22 17 5 14 0 8 0 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 111 0 99 1 0 1 1 0 8 0 amappl13 176 33 0 33 1 1 0 1 0 8 0 amappl12 168 1323 0 1293 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 151 0 150 1 0 1 1 0 8 0 amappl9 144 170 0 170 1 1 0 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 100 0 88 1 0 1 1 0 8 0 amappl6 120 166 0 165 1 0 1 1 0 8 0 amappl5 112 134 0 123 1 0 1 1 0 8 0 amappl4 104 306 0 287 1 0 1 1 0 8 0 amappl3 96 3241 0 3143 4 0 4 4 0 8 1 amappl2 88 944 0 859 2 0 2 2 0 8 0 amappl1 80 8345 0 7784 14 1 13 14 0 8 1 amappl 88 5023 0 4852 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 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 686 0 656 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 686 0 656 1 0 1 1 0 8 0 vmmpekpl 168 6985 0 6948 2 0 2 2 0 8 0 vmmpepl 168 50193 0 48316 96 10 86 95 0 357 0 vmsppl 448 685 0 656 6 2 4 5 0 8 0 rwobjpl 56 20235 0 16881 51 3 48 48 0 8 0 pdppl 4096 1379 0 1312 105 34 71 83 0 8 4 pvpl 32 14921 0 0 121 0 121 121 0 265 0 pmappl 248 685 0 656 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 397 0 55 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83421ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:159 __mp_lock(ffffffff83577ef0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83577ef0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a0bc250,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83577ef0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83577ef0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff83577ef0,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 yield() at yield+0x6a sys/kern/sched_bsd.c:320 pool_get(ffffffff8357fdd8,9) at pool_get+0x242 sys/kern/subr_pool.c:589 exit1(ffff80002a0511d0,43,0,1) at exit1+0x3df sys/kern/kern_exit.c:187 sys_exit(ffff80002a0511d0,ffff80002a0bc640,ffff80002a0bc590) at sys_exit+0x1a end trace frame: 0xffff80002a0bc630, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83421ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:159 __mp_lock(ffffffff83577ef0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83577ef0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a0bc250,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83577ef0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83577ef0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff83577ef0,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 yield() at yield+0x6a sys/kern/sched_bsd.c:320 pool_get(ffffffff8357fdd8,9) at pool_get+0x242 sys/kern/subr_pool.c:589 exit1(ffff80002a0511d0,43,0,1) at exit1+0x3df sys/kern/kern_exit.c:187 sys_exit(ffff80002a0511d0,ffff80002a0bc640,ffff80002a0bc590) at sys_exit+0x1a syscall(ffff80002a0bc640) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a0bc640) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a3736ad2580, count: -16 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83034693) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003720a1f8,ffff80003720a1f8,6e934ca7b6044289) at ufs_dirbadentry VOP_LOOKUP(fffffd80691c1438,ffff80003720a470,ffff80003720a4a0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003720a440) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003720a440) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80002a04fbf8,ffffff9c,20000000,2000,285b9a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80003720a640) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003720a640) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1f7aee8f70, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83034693) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003720a1f8,ffff80003720a1f8,6e934ca7b6044289) at ufs_dirbadentry VOP_LOOKUP(fffffd80691c1438,ffff80003720a470,ffff80003720a4a0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003720a440) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003720a440) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80002a04fbf8,ffffff9c,20000000,2000,285b9a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80003720a640) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003720a640) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1f7aee8f70, count: -9